assets and tier plans revamp

src/components/generic/Blocks/Admin/AudioBlock.jsx

@@ -13,18 +13,11 @@ import { Textarea }         from "@/components/ui/textarea";
 import { AssetPickerSheet } from "../../AssetPickerSheet";
 import api from "@/utils/api.util";
 import { MediaFallback } from "@/components/generic/MediaFallback";
+import { Spinner } from "@/components/ui/spinner";
+import { formatPlayerTime as fmtTime } from "@/utils/format.util";
 
 const API_BASE = (import.meta.env.VITE_API_URL ?? "http://localhost:3024").replace(/\/$/, "");
 
-// ─── Helpers ──────────────────────────────────────────────────────────────────
-
-const fmtTime = (s) => {
-    if (!s || isNaN(s)) return "0:00";
-    const m   = Math.floor(s / 60);
-    const sec = Math.floor(s % 60);
-    return `${m}:${sec < 10 ? "0" : ""}${sec}`;
-};
-
 const SPEEDS = [0.5, 0.75, 1, 1.25, 1.5, 2];
 
 // ─── AudioBlock (Admin) ───────────────────────────────────────────────────────
@@ -45,6 +38,10 @@ export function AudioBlock({ content, onUpdate, readOnly = false }) {
     const [volume,      setVolume]      = useState(1);
     const [muted,       setMuted]       = useState(false);
     const [speedIdx,    setSpeedIdx]    = useState(2); // 1×
+    // True from the moment `src` is set until the browser has actually
+    // buffered enough to play (or stalls mid-playback) — same gap VideoBlock
+    // closes, so a slow-loading audio file doesn't just sit there silently.
+    const [mediaLoading, setMediaLoading] = useState(true);
 
     const assetId         = content.asset_id       ?? null;
     const storageProvider = content.storage_provider ?? null;
@@ -79,6 +76,10 @@ export function AudioBlock({ content, onUpdate, readOnly = false }) {
         return () => { cancelled = true; };
     }, [assetId, isS3]);
 
+    // Reset the loading spinner whenever the src actually changes (new
+    // asset picked, or the S3 token above just resolved).
+    useEffect(() => { setMediaLoading(true); }, [src]);
+
     // ── Audio events ──────────────────────────────────────────────────────────
 
     const onTimeUpdate = useCallback(() => setCurrentTime(audioRef.current?.currentTime ?? 0), []);
@@ -90,6 +91,10 @@ export function AudioBlock({ content, onUpdate, readOnly = false }) {
             setBuffered((el.buffered.end(el.buffered.length - 1) / el.duration) * 100);
         }
     }, []);
+    const onLoadedData = useCallback(() => setMediaLoading(false), []);
+    const onCanPlay    = useCallback(() => setMediaLoading(false), []);
+    const onWaiting     = useCallback(() => setMediaLoading(true), []);
+    const onPlaying     = useCallback(() => setMediaLoading(false), []);
 
     // ── Controls ──────────────────────────────────────────────────────────────
 
@@ -186,6 +191,10 @@ export function AudioBlock({ content, onUpdate, readOnly = false }) {
                         onLoadedMetadata={onLoadedMeta}
                         onEnded={onEnded}
                         onProgress={onProgress}
+                        onLoadedData={onLoadedData}
+                        onCanPlay={onCanPlay}
+                        onWaiting={onWaiting}
+                        onPlaying={onPlaying}
                         preload="metadata"
                     />
 
@@ -206,13 +215,13 @@ export function AudioBlock({ content, onUpdate, readOnly = false }) {
                         )}
 
                         <div className="relative z-10 flex items-center gap-4 p-4 text-white">
-                            <div className="shrink-0 w-20 h-20 rounded-md overflow-hidden bg-black/25">
-                                {thumbnail ? (
+                            <div className="shrink-0 w-20 h-20 rounded-md overflow-hidden bg-black/25 flex items-center justify-center">
+                                {mediaLoading ? (
+                                    <Spinner className="size-6 text-white" />
+                                ) : thumbnail ? (
                                     <img src={thumbnail} alt={title} className="w-full h-full object-cover" />
                                 ) : (
-                                    <div className="w-full h-full flex items-center justify-center">
                                     <Music2 className="w-7 h-7 text-white/30" />
-                                    </div>
                                 )}
                             </div>
                             <div className="flex flex-col gap-1 flex-1 min-w-0">

src/components/generic/Blocks/Admin/VideoBlock.jsx

@@ -12,15 +12,8 @@ import { Label } from "@/components/ui/label";
 import { AssetPickerSheet } from "../../AssetPickerSheet";
 import { useAssetPreviewSrc } from "@/hooks/useAssetPreviewSrc";
 import { MediaFallback } from "@/components/generic/MediaFallback";
-
-// ─── Helpers ──────────────────────────────────────────────────────────────────
-
-const fmtTime = (s) => {
-  if (!s || isNaN(s)) return "0:00";
-  const m   = Math.floor(s / 60);
-  const sec = Math.floor(s % 60);
-  return `${m}:${sec < 10 ? "0" : ""}${sec}`;
-};
+import { Spinner } from "@/components/ui/spinner";
+import { formatPlayerTime as fmtTime } from "@/utils/format.util";
 
 // ─── VideoBlock (Admin) ───────────────────────────────────────────────────────
 
@@ -44,6 +37,13 @@ export function VideoBlock({ content, onUpdate, readOnly = false }) {
   const [muted,         setMuted]         = useState(false);
   const [volume,        setVolume]        = useState(1);
   const [overlayVisible,setOverlayVisible]= useState(true);
+  // True from the moment `src` is set until the browser has actually
+  // buffered enough to render a frame (or stalls mid-playback) — closes the
+  // gap between "token resolved" (the `loading` from useAssetPreviewSrc
+  // above) and "video is actually watchable", which used to render as a
+  // blank black box with no indication anything was happening, especially
+  // on large/slow-loading files.
+  const [mediaLoading,  setMediaLoading]  = useState(true);
 
   // Reset player when video changes
   useEffect(() => {
@@ -52,6 +52,7 @@ export function VideoBlock({ content, onUpdate, readOnly = false }) {
     setCurrentTime(0);
     setTotalDuration(0);
     setOverlayVisible(true);
+    setMediaLoading(true);
   }, [src]);
 
   // ── Video event listeners ─────────────────────────────────────────────────
@@ -66,15 +67,27 @@ export function VideoBlock({ content, onUpdate, readOnly = false }) {
     };
     const onLoaded     = () => setTotalDuration(v.duration);
     const onEnded       = () => { setPlaying(false); setOverlayVisible(true); };
+    const onLoadedData  = () => setMediaLoading(false);
+    const onCanPlay     = () => setMediaLoading(false);
+    const onWaiting     = () => setMediaLoading(true);
+    const onPlaying     = () => setMediaLoading(false);
 
     v.addEventListener("timeupdate",     onTimeUpdate);
     v.addEventListener("loadedmetadata", onLoaded);
     v.addEventListener("ended",          onEnded);
+    v.addEventListener("loadeddata",     onLoadedData);
+    v.addEventListener("canplay",        onCanPlay);
+    v.addEventListener("waiting",        onWaiting);
+    v.addEventListener("playing",        onPlaying);
 
     return () => {
       v.removeEventListener("timeupdate",     onTimeUpdate);
       v.removeEventListener("loadedmetadata", onLoaded);
       v.removeEventListener("ended",          onEnded);
+      v.removeEventListener("loadeddata",     onLoadedData);
+      v.removeEventListener("canplay",        onCanPlay);
+      v.removeEventListener("waiting",        onWaiting);
+      v.removeEventListener("playing",        onPlaying);
     };
   }, [src]);
 
@@ -180,7 +193,16 @@ export function VideoBlock({ content, onUpdate, readOnly = false }) {
               className="w-full h-full object-cover"
             />
 
+            {/* Loading spinner — covers the gap between src resolving and the
+                browser actually having a frame to show */}
+            {mediaLoading && (
+              <div className="absolute inset-0 flex items-center justify-center bg-black/40 pointer-events-none">
+                <Spinner className="size-8 text-white" />
+              </div>
+            )}
+
             {/* Play/pause overlay */}
+            {!mediaLoading && (
               <div
                 className={`absolute inset-0 flex items-center justify-center transition-opacity duration-200 ${overlayVisible ? "opacity-100" : "opacity-0 pointer-events-none"}`}
                 style={{ background: "rgba(0,0,0,0.3)" }}
@@ -196,6 +218,7 @@ export function VideoBlock({ content, onUpdate, readOnly = false }) {
                   }
                 </button>
               </div>
+            )}
 
             {/* Change video hover hint */}
             {!readOnly && (

src/components/generic/Blocks/Client/AudioBlock.jsx

@@ -3,15 +3,7 @@ import { Music2, RotateCcw, RotateCw, Play, Pause, VolumeOff, Volume2 } from "lu
 import api from "@/utils/api.util";
 import { MediaFallback } from "@/components/generic/MediaFallback";
 import { useMediaWatchGuard } from "@/hooks/useMediaWatchGuard";
-
-// ─── Helpers ──────────────────────────────────────────────────────────────────
-
-const fmtTime = (s) => {
-    if (!s || isNaN(s)) return "0:00";
-    const m   = Math.floor(s / 60);
-    const sec = Math.floor(s % 60);
-    return `${m}:${sec < 10 ? "0" : ""}${sec}`;
-};
+import { formatPlayerTime as fmtTime } from "@/utils/format.util";
 
 const SPEEDS = [0.5, 0.75, 1, 1.25, 1.5, 2];
 

src/components/generic/Blocks/Client/VideoBlock.jsx

@@ -10,15 +10,7 @@ import { ChevronLeft, ChevronRight } from "lucide-react";
 import api from "@/utils/api.util";
 import { MediaFallback } from "@/components/generic/MediaFallback";
 import { useMediaWatchGuard } from "@/hooks/useMediaWatchGuard";
-
-// ─── Helpers ──────────────────────────────────────────────────────────────────
-
-const fmtTime = (s) => {
-    if (!s || isNaN(s)) return "0:00";
-    const m   = Math.floor(s / 60);
-    const sec = Math.floor(s % 60);
-    return `${m}:${sec < 10 ? "0" : ""}${sec}`;
-};
+import { formatPlayerTime as fmtTime } from "@/utils/format.util";
 
 const PLAYBACK_SPEEDS = ["0.5", "0.75", "Normal", "1.25", "1.5", "2"];
 

src/components/generic/FileZoomViewer.jsx

@@ -1,7 +1,11 @@
 /***********************************************************************************************************************************************************************
  * File Name    : FileZoomViewer.jsx
- * Type         : Component (Client)
- * Description  : Zoom/pan/fit viewer for image and PDF files.
+ * Type         : Component (Generic)
+ * Description  : Zoom/pan/fit viewer for image and PDF files. Used by both the
+ *                 client task-attachment preview (FilePreview.jsx, via blob:
+ *                 URLs) and the admin asset preview dialog (AssetPreviewDialog.jsx,
+ *                 via direct stream-token URLs) — `src` accepts either, this
+ *                 component doesn't care how the URL was produced.
  *
  *                Supported:
  *                  image/jpeg, image/png  → <img> with scroll-zoom + drag-pan
@@ -10,13 +14,15 @@
  *                                            with page navigation for multi-page PDFs
  *
  *                Not supported (shows a message instead of attempting render):
- *                  DOCX, video, audio, and any other file type
+ *                  DOCX, video, audio, and any other file type — video/audio
+ *                  assets use the existing admin VideoBlock/AudioBlock players
+ *                  instead (see Blocks/Admin/), not this viewer.
  *
  * Props:
- *   blobUrl   {string}  – object URL (from FilePreview's useBlobUrl)
+ *   src       {string}  – object URL or direct stream URL
  *   mimeType  {string}
  *   fileName  {string}
- *   loading   {boolean} – true while the parent is still fetching the blob
+ *   loading   {boolean} – true while the parent is still resolving the src
  ***********************************************************************************************************************************************************************/
 import { useState, useRef, useEffect, useCallback } from 'react';
 import { Button } from '@/components/ui/button';
@@ -154,7 +160,7 @@ const ZoomPanArea = ({ scale, setScale, offset, setOffset, fitFn, children }) =>
 };
 
 // ─── Image viewer ───────────────────────────────────────────────────────────────
-const ImageViewer = ({ blobUrl, fileName }) => {
+const ImageViewer = ({ src, fileName }) => {
     const [scale, setScale] = useState(1);
     const [offset, setOffset] = useState({ x: 0, y: 0 });
 
@@ -174,9 +180,10 @@ const ImageViewer = ({ blobUrl, fileName }) => {
             />
             <ZoomPanArea scale={scale} setScale={setScale} offset={offset} setOffset={setOffset} fitFn={fit}>
                 <img
-                    src={blobUrl}
+                    src={src}
                     alt={fileName}
                     draggable={false}
+                    onContextMenu={(e) => e.preventDefault()}
                     className="max-h-[380px] max-w-none select-none pointer-events-none"
                 />
             </ZoomPanArea>
@@ -185,7 +192,7 @@ const ImageViewer = ({ blobUrl, fileName }) => {
 };
 
 // ─── PDF viewer (pdf.js → canvas) ───────────────────────────────────────────────
-const PdfViewer = ({ blobUrl, fileName }) => {
+const PdfViewer = ({ src, fileName }) => {
     const [scale, setScale] = useState(1);
     const [offset, setOffset] = useState({ x: 0, y: 0 });
     const [pdfDoc, setPdfDoc] = useState(null);
@@ -207,7 +214,7 @@ const PdfViewer = ({ blobUrl, fileName }) => {
                 pdfjsLib.GlobalWorkerOptions.workerSrc =
                     new URL('pdfjs-dist/build/pdf.worker.min.mjs', import.meta.url).toString();
 
-                const doc = await pdfjsLib.getDocument(blobUrl).promise;
+                const doc = await pdfjsLib.getDocument(src).promise;
                 if (cancelled) return;
                 setPdfDoc(doc);
                 setNumPages(doc.numPages);
@@ -217,7 +224,7 @@ const PdfViewer = ({ blobUrl, fileName }) => {
         })();
 
         return () => { cancelled = true; };
-    }, [blobUrl]);
+    }, [src]);
 
     // ── Render current page to canvas ──────────────────────────────────────────
     useEffect(() => {
@@ -274,7 +281,7 @@ const PdfViewer = ({ blobUrl, fileName }) => {
 };
 
 // ─── Main viewer ────────────────────────────────────────────────────────────────
-const FileZoomViewer = ({ blobUrl, mimeType, fileName, loading }) => {
+const FileZoomViewer = ({ src, mimeType, fileName, loading }) => {
     const mode = resolveMode(mimeType, fileName);
 
     if (loading) {
@@ -285,12 +292,12 @@ const FileZoomViewer = ({ blobUrl, mimeType, fileName, loading }) => {
         );
     }
 
-    if (!blobUrl || mode === 'unsupported') {
+    if (!src || mode === 'unsupported') {
         return <UnsupportedMessage fileName={fileName} />;
     }
 
-    if (mode === 'image') return <ImageViewer blobUrl={blobUrl} fileName={fileName} />;
-    if (mode === 'pdf')   return <PdfViewer blobUrl={blobUrl} fileName={fileName} />;
+    if (mode === 'image') return <ImageViewer src={src} fileName={fileName} />;
+    if (mode === 'pdf')   return <PdfViewer src={src} fileName={fileName} />;
 
     return <UnsupportedMessage fileName={fileName} />;
 };

src/components/generic/TranscodeStatusBanner.jsx

@@ -0,0 +1,22 @@
+// components/generic/TranscodeStatusBanner.jsx
+//
+// Small inline notice for a video asset's background remux (see backend
+// services/assetTranscode.service.js) — .mov/.mkv uploads get repackaged
+// into a faststart .mp4 for fast in-browser playback. Non-blocking: the
+// asset still plays from its original (slower) file while this is pending/
+// processing, this banner is just a heads-up. Renders nothing once the
+// asset is "done"/"none" (fast already) — "failed" also renders nothing,
+// the asset just quietly keeps playing from the original.
+
+import { Loader2 } from "lucide-react";
+
+export function TranscodeStatusBanner({ status }) {
+    if (status !== "pending" && status !== "processing") return null;
+
+    return (
+        <div className="flex items-center gap-2 px-3 py-2 text-xs text-muted-foreground bg-muted/40 border-b">
+            <Loader2 className="size-3.5 animate-spin" />
+            Optimizing this video for faster playback — still watchable now, will load quicker shortly.
+        </div>
+    );
+}

src/contexts/AdminLibraryContext.jsx

@@ -416,6 +416,54 @@ export function LibraryProvider({ children }) {
     [request],
   );
 
+  // ─── Product listings (individual purchase, parity with course products) ──
+
+  const fetchUnitProduct = useCallback(
+    (unitId) => request(async () => {
+      const { data } = await api.get(`/admin/products/units/${unitId}/product`);
+      return data.data ?? null;
+    }), [request],
+  );
+
+  const saveUnitProduct = useCallback(
+    (unitId, payload) => request(async () => {
+      const { data } = await api.put(`/admin/products/units/${unitId}/product`, payload);
+      toast("Product listing saved.");
+      return data.data ?? null;
+    }), [request],
+  );
+
+  const removeUnitProduct = useCallback(
+    (unitId) => request(async () => {
+      await api.delete(`/admin/products/units/${unitId}/product`);
+      toast("Product listing removed.");
+      return true;
+    }), [request],
+  );
+
+  const fetchLessonProduct = useCallback(
+    (lessonId) => request(async () => {
+      const { data } = await api.get(`/admin/products/lessons/${lessonId}/product`);
+      return data.data ?? null;
+    }), [request],
+  );
+
+  const saveLessonProduct = useCallback(
+    (lessonId, payload) => request(async () => {
+      const { data } = await api.put(`/admin/products/lessons/${lessonId}/product`, payload);
+      toast("Product listing saved.");
+      return data.data ?? null;
+    }), [request],
+  );
+
+  const removeLessonProduct = useCallback(
+    (lessonId) => request(async () => {
+      await api.delete(`/admin/products/lessons/${lessonId}/product`);
+      toast("Product listing removed.");
+      return true;
+    }), [request],
+  );
+
   // ─── Value ────────────────────────────────────────────────────────────────
   const value = {
     // shared table state
@@ -430,6 +478,7 @@ export function LibraryProvider({ children }) {
     fetchUnitArchiveImpact, fetchUnitPermanentDeleteImpact,
     fetchUnitFieldValues,
     attachLessonsToUnit, detachLessonFromUnit, reorderUnitLessons,
+    fetchUnitProduct, saveUnitProduct, removeUnitProduct,
 
     // lesson library
     lessons, lesson, lessonsFlat,
@@ -439,6 +488,7 @@ export function LibraryProvider({ children }) {
     permanentlyDeleteLesson, permanentlyDeleteLessons,
     fetchLessonPermanentDeleteImpact,
     fetchLessonFieldValues,
+    fetchLessonProduct, saveLessonProduct, removeLessonProduct,
   };
 
   return <LibraryContext.Provider value={value}>{children}</LibraryContext.Provider>;

src/contexts/ClientCoursesContext.jsx

@@ -1,6 +1,7 @@
 import { createContext, useCallback, useContext, useState } from "react";
 import api from "@/utils/api.util";
 import { toast } from "sonner";
+import { usePurchases } from "@/hooks/usePurchases";
 
 // ─── Context ──────────────────────────────────────────────────────────────────
 
@@ -176,7 +177,7 @@ export function ClientCoursesProvider({ children }) {
 
   const [purchases,        setPurchases]        = useState([]);
   const [purchasesLoading, setPurchasesLoading] = useState(false);
-  const [purchaseLoading,  setPurchaseLoading]  = useState(false);
+  const { purchaseLoading, createOrder: createCourseOrder, captureOrder: captureCourseOrder, cancelOrder: cancelCourseOrder } = usePurchases();
 
   const getMyPurchases = useCallback(async () => {
     setPurchasesLoading(true);
@@ -188,35 +189,6 @@ export function ClientCoursesProvider({ children }) {
     } finally { setPurchasesLoading(false); }
   }, []);
 
-  const createCourseOrder = useCallback(async (productId) => {
-    setPurchaseLoading(true);
-    try {
-      const { data } = await api.post("/client/course-purchases/order", { product_id: productId });
-      return data.data ?? null;
-    } catch (err) {
-      toast(err?.response?.data?.message ?? "Could not create order.");
-      return null;
-    } finally { setPurchaseLoading(false); }
-  }, []);
-
-  const captureCourseOrder = useCallback(async (orderId) => {
-    setPurchaseLoading(true);
-    try {
-      const { data } = await api.post("/client/course-purchases/capture", { order_id: orderId });
-      toast("Purchase confirmed! You now have access to this course.");
-      return data.data ?? null;
-    } catch (err) {
-      toast(err?.response?.data?.message ?? "Could not capture payment.");
-      return null;
-    } finally { setPurchaseLoading(false); }
-  }, []);
-
-  const cancelCourseOrder = useCallback(async (orderId) => {
-    try {
-      await api.post("/client/course-purchases/cancel", { order_id: orderId });
-    } catch { /* silent */ }
-  }, []);
-
   // ─── Reset helpers ──────────────────────────────────────────────────────────
 
   const resetCourse = useCallback(() => { setCourse(null); setCourseBlocked(false); }, []);

src/contexts/ClientLibraryContext.jsx

@@ -36,6 +36,12 @@ export function ClientLibraryProvider({ children }) {
   const [quiz, setQuiz] = useState(null);
   const [quizLoading, setQuizLoading] = useState(false);
 
+  // ── Checkout info (unit/lesson individual-purchase page) — deliberately not
+  // gated by canAccessUnit/canAccessLesson like unitDetail/lesson above, since
+  // this is exactly what a locked-and-unpurchased learner needs to see.
+  const [checkoutInfo, setCheckoutInfo] = useState(null);
+  const [checkoutInfoLoading, setCheckoutInfoLoading] = useState(false);
+
   // ─── Actions ────────────────────────────────────────────────────────────
 
   const getUnits = useCallback(async () => {
@@ -222,6 +228,26 @@ export function ClientLibraryProvider({ children }) {
     }
   }, []);
 
+  const getUnitCheckoutInfo = useCallback(async (uuid) => {
+    setCheckoutInfoLoading(true);
+    try {
+      const { data } = await api.get(`/client/units/${uuid}/checkout-info`);
+      setCheckoutInfo(data.data ?? null);
+    } catch (err) {
+      toast(err?.response?.data?.message ?? "Could not load unit.");
+    } finally { setCheckoutInfoLoading(false); }
+  }, []);
+
+  const getLessonCheckoutInfo = useCallback(async (uuid) => {
+    setCheckoutInfoLoading(true);
+    try {
+      const { data } = await api.get(`/client/lessons/${uuid}/checkout-info`);
+      setCheckoutInfo(data.data ?? null);
+    } catch (err) {
+      toast(err?.response?.data?.message ?? "Could not load lesson.");
+    } finally { setCheckoutInfoLoading(false); }
+  }, []);
+
   // ─── Resets ─────────────────────────────────────────────────────────────
 
   const resetUnitDetail = useCallback(() => {
@@ -231,6 +257,7 @@ export function ClientLibraryProvider({ children }) {
   }, []);
   const resetLesson = useCallback(() => setLesson(null), []);
   const resetQuiz = useCallback(() => setQuiz(null), []);
+  const resetCheckoutInfo = useCallback(() => setCheckoutInfo(null), []);
 
   // ─── Value ──────────────────────────────────────────────────────────────
 
@@ -240,6 +267,7 @@ export function ClientLibraryProvider({ children }) {
     unitDetail, unitDetailLoading, unitBlocked, unitBlockedInfo,
     lesson, lessonLoading,
     quiz, quizLoading,
+    checkoutInfo, checkoutInfoLoading,
 
     getUnits,
     getLessons,
@@ -251,10 +279,13 @@ export function ClientLibraryProvider({ children }) {
     upsertLessonProgress,
     upsertWatchProgress,
     markComplete,
+    getUnitCheckoutInfo,
+    getLessonCheckoutInfo,
 
     resetUnitDetail,
     resetLesson,
     resetQuiz,
+    resetCheckoutInfo,
   };
 
   return (

src/hooks/usePurchaseCheckout.js

@@ -0,0 +1,71 @@
+import { useEffect, useRef, useState } from "react";
+import { useNavigate, useSearchParams } from "react-router-dom";
+import { toast } from "sonner";
+import { usePurchases } from "./usePurchases";
+
+/**
+ * Shared PayPal order/capture/cancel flow for a standalone checkout page
+ * (Unit or Lesson) — mirrors CourseCheckout.jsx's logic exactly, including
+ * the cancel-vs-capture race-condition guard: a real PayPal cancel redirect
+ * carries BOTH `cancelled=true` (our own cancelUrl) and `token=<order_id>`
+ * (PayPal always appends its own token to whatever return/cancel URL it's
+ * given) — without the `wasCancelled` check below, both the capture effect
+ * and the cancel effect would fire on the same load, racing a capture call
+ * against the cancel and surfacing a confusing "not found" error instead of
+ * a clean cancellation message.
+ *
+ * @param {string} targetId - uuid used to reload the page's own detail state
+ * @param {(id: string) => void} loadTarget - memoized loader, called on mount and again after a successful capture
+ * @param {string} checkoutPath - this page's own path, used to strip query params after a cancel
+ */
+export function usePurchaseCheckout({ targetId, loadTarget, checkoutPath }) {
+  const navigate = useNavigate();
+  const [searchParams] = useSearchParams();
+  const { purchaseLoading, createOrder, captureOrder, cancelOrder } = usePurchases();
+
+  const returnToken  = searchParams.get("token");
+  const wasCancelled = searchParams.get("cancelled") === "true";
+
+  const [capturing, setCapturing] = useState(false);
+  const capturingRef = useRef(false);
+
+  useEffect(() => {
+    loadTarget(targetId);
+  }, [targetId]); // eslint-disable-line react-hooks/exhaustive-deps
+
+  useEffect(() => {
+    if (!returnToken || wasCancelled || capturingRef.current) return;
+    capturingRef.current = true;
+    setCapturing(true);
+    captureOrder(returnToken).then((result) => {
+      if (result) {
+        loadTarget(targetId);
+        navigate(checkoutPath, { replace: true });
+      } else {
+        setCapturing(false);
+        capturingRef.current = false;
+      }
+    });
+  }, [returnToken]); // eslint-disable-line react-hooks/exhaustive-deps
+
+  useEffect(() => {
+    if (!wasCancelled) return;
+    const orderId = searchParams.get("token");
+    if (orderId) cancelOrder(orderId);
+    // Deferred to a new macrotask, same reasoning as CourseCheckout.jsx: this
+    // page renders before <Toaster /> in the layout, so a toast fired
+    // synchronously here races the Toaster's own mount effect and is
+    // silently dropped.
+    setTimeout(() => toast("Payment was cancelled."), 0);
+    navigate(checkoutPath, { replace: true });
+  }, [wasCancelled]); // eslint-disable-line react-hooks/exhaustive-deps
+
+  const buyNow = async (productId) => {
+    const order = await createOrder(productId);
+    if (!order) return;
+    if (!order.approval_url) { toast("Could not get PayPal approval URL."); return; }
+    window.location.href = order.approval_url;
+  };
+
+  return { capturing, purchaseLoading, buyNow };
+}

src/hooks/usePurchases.js

@@ -0,0 +1,43 @@
+import { useCallback, useState } from "react";
+import api from "@/utils/api.util";
+import { toast } from "sonner";
+
+// Generic individual-purchase API (PayPal order/capture/cancel) — a Product's
+// purchasable_type/purchasable_id already carries its target (course, unit,
+// or lesson) server-side, so this hook doesn't need to know which either.
+// Endpoint paths are historically "course-purchases" (predates Units/Lessons
+// being individually purchasable) but the rows and this API are generic.
+export function usePurchases() {
+  const [purchaseLoading, setPurchaseLoading] = useState(false);
+
+  const createOrder = useCallback(async (productId) => {
+    setPurchaseLoading(true);
+    try {
+      const { data } = await api.post("/client/course-purchases/order", { product_id: productId });
+      return data.data ?? null;
+    } catch (err) {
+      toast(err?.response?.data?.message ?? "Could not create order.");
+      return null;
+    } finally { setPurchaseLoading(false); }
+  }, []);
+
+  const captureOrder = useCallback(async (orderId) => {
+    setPurchaseLoading(true);
+    try {
+      const { data } = await api.post("/client/course-purchases/capture", { order_id: orderId });
+      toast("Purchase confirmed! You now have access.");
+      return data.data ?? null;
+    } catch (err) {
+      toast(err?.response?.data?.message ?? "Could not capture payment.");
+      return null;
+    } finally { setPurchaseLoading(false); }
+  }, []);
+
+  const cancelOrder = useCallback(async (orderId) => {
+    try {
+      await api.post("/client/course-purchases/cancel", { order_id: orderId });
+    } catch { /* silent */ }
+  }, []);
+
+  return { purchaseLoading, createOrder, captureOrder, cancelOrder };
+}

src/modules/admin/components/assets/AssetPreviewDialog.jsx

@@ -0,0 +1,114 @@
+// modules/admin/components/assets/AssetPreviewDialog.jsx
+//
+// Quick-look dialog for the Assets table's "Preview" row action. Images and
+// PDFs render through the shared FileZoomViewer (zoom/pan). Video and audio
+// reuse the existing admin VideoBlock/AudioBlock players (Blocks/Admin/) —
+// same rich, custom-controls-only UI already used on ViewVideoAsset/
+// ViewAudioAsset and in the lesson block editors — in readOnly mode. No
+// Download button here or anywhere else an asset can be previewed —
+// protecting assets means the raw file is never handed to the browser as a
+// downloadable blob, only streamed inline via short-lived token.
+
+import {
+    Dialog, DialogContent, DialogHeader, DialogTitle,
+} from "@/components/ui/dialog";
+import { Badge } from "@/components/ui/badge";
+import { Image, Video, Music, FileText, File } from "lucide-react";
+
+import { useAssetPreviewSrc } from "@/hooks/useAssetPreviewSrc";
+import FileZoomViewer from "@/components/generic/FileZoomViewer";
+import { VideoBlock } from "@/components/generic/Blocks/Admin/VideoBlock";
+import { AudioBlock } from "@/components/generic/Blocks/Admin/AudioBlock";
+import { TranscodeStatusBanner } from "@/components/generic/TranscodeStatusBanner";
+import { formatFileSize } from "@/utils/format.util";
+
+const KIND_ICON = { image: Image, video: Video, audio: Music, document: FileText };
+const NOOP = () => {};
+
+function PreviewBody({ asset }) {
+    const isZoomable = asset.file_type === "image" || asset.file_type === "document";
+    const { src, loading } = useAssetPreviewSrc(isZoomable ? asset : null, { scope: "admin" });
+
+    if (asset.file_type === "video") {
+        return (
+            <div>
+                <TranscodeStatusBanner status={asset.transcode_status} />
+                <div className="p-4">
+                    <VideoBlock
+                        readOnly
+                        onUpdate={NOOP}
+                        content={{
+                            asset_id:         asset.asset_id,
+                            storage_provider: asset.storage_provider,
+                            url:              asset.file_url,
+                            thumbnail_url:    asset.thumbnail_url,
+                            title:            asset.display_name ?? asset.original_name,
+                            tag:              asset.extension?.toUpperCase() ?? "",
+                        }}
+                    />
+                </div>
+            </div>
+        );
+    }
+
+    if (asset.file_type === "audio") {
+        return (
+            <div className="p-4 flex justify-center">
+                <AudioBlock
+                    readOnly
+                    onUpdate={NOOP}
+                    content={{
+                        asset_id:         asset.asset_id,
+                        storage_provider: asset.storage_provider,
+                        url:              asset.file_url,
+                        thumbnail:        asset.thumbnail_url,
+                        title:            asset.display_name ?? asset.original_name,
+                        tag:              asset.extension?.toUpperCase() ?? "",
+                    }}
+                />
+            </div>
+        );
+    }
+
+    return (
+        <FileZoomViewer
+            src={src}
+            mimeType={asset.mime_type}
+            fileName={asset.display_name ?? asset.original_name}
+            loading={loading}
+        />
+    );
+}
+
+export function AssetPreviewDialog({ asset, open, onOpenChange }) {
+    if (!asset) return null;
+
+    const Icon = KIND_ICON[asset.file_type] ?? File;
+    const fileName = asset.display_name ?? asset.original_name;
+
+    return (
+        <Dialog open={open} onOpenChange={onOpenChange}>
+            <DialogContent className="sm:max-w-lg lg:max-w-4xl p-0 gap-0 overflow-hidden">
+                <DialogHeader className="px-4 py-3 pr-12 border-b flex-row items-center gap-2 space-y-0">
+                    <Icon className="size-4.5 text-muted-foreground shrink-0" />
+                    <DialogTitle className="text-sm font-medium truncate">{fileName}</DialogTitle>
+                </DialogHeader>
+
+                <PreviewBody asset={asset} />
+
+                <div className="px-4 py-2.5 border-t flex items-center gap-2 text-xs text-muted-foreground">
+                    {asset.mime_type && (
+                        <Badge variant="secondary" className="text-xs font-normal select-none">
+                            {asset.mime_type}
+                        </Badge>
+                    )}
+                    {formatFileSize(asset.file_size) && (
+                        <Badge variant="secondary" className="text-xs font-normal select-none">
+                            {formatFileSize(asset.file_size)}
+                        </Badge>
+                    )}
+                </div>
+            </DialogContent>
+        </Dialog>
+    );
+}

src/modules/admin/components/assets/AssetsTable.jsx

@@ -9,6 +9,7 @@ import { useAuth } from "@/contexts/AuthContext";
 import DataTable from "@/components/generic/Table/DataTable";
 import { FilterSheet } from "@/components/generic/Sheet/FilterSheet";
 import { ArchiveDialog } from "@/components/generic/Dialogs/ArchiveDialog";
+import { AssetPreviewDialog } from "./AssetPreviewDialog";
 
 import { buildDataColumns, columnPinning } from "../../config/assets/columns.config";
 import { buildToolbarActions } from "../../config/assets/toolbar.config";
@@ -21,6 +22,7 @@ import { formatGeneratedBy } from "@/utils/generatedBy.util";
 export default function AssetsTable() {
     const [archiveTarget, setArchiveTarget] = useState(null);
     const [archiveIds, setArchiveIds] = useState(null);
+    const [previewTarget, setPreviewTarget] = useState(null);
 
     const tableRefsRef = useRef({
         getFilters: () => [],
@@ -62,6 +64,7 @@ export default function AssetsTable() {
 
     const rowActions = buildRowActions({
         onView: (row) => navigate(resolveViewPath(row)),
+        onPreview: (row) => setPreviewTarget(row),
         onEdit: (row) => navigate(`edit/${row.asset_id}`),
         onArchive: (row) => setArchiveTarget(row),
     });
@@ -144,6 +147,13 @@ export default function AssetsTable() {
                 loading={loading}
                 onSuccess={handleArchiveSuccess}
             />
+
+            {/* ── Quick-look preview ── */}
+            <AssetPreviewDialog
+                asset={previewTarget}
+                open={!!previewTarget}
+                onOpenChange={(v) => !v && setPreviewTarget(null)}
+            />
         </>
     );
 }

src/modules/admin/components/products/ProductPricingCard.jsx

@@ -0,0 +1,173 @@
+import { useEffect, useState } from "react";
+import { Save } from "lucide-react";
+
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+import { Spinner } from "@/components/ui/spinner";
+import { Switch } from "@/components/ui/switch";
+
+const EMPTY_FORM = { name: "", price: "", currency: "USD", access_days: "", is_active: true };
+
+/**
+ * Self-contained product-listing editor for individual-purchase pricing —
+ * fetches on mount, saves via its own button (same convention as
+ * CompletionRequirementBuilder: fetchFn/saveFn/removeFn + args resolve the
+ * target server-side, so this one component covers Course/Unit/Lesson).
+ */
+export default function ProductPricingCard({ label = "this content", fetchFn, saveFn, removeFn, args = [] }) {
+  const [product, setProduct] = useState(null);
+  const [form, setForm] = useState(EMPTY_FORM);
+  const [dirty, setDirty] = useState(false);
+  const [loading, setLoading] = useState(true);
+  const [saving, setSaving] = useState(false);
+
+  useEffect(() => {
+    let active = true;
+    fetchFn(...args).then((prod) => {
+      if (!active) return;
+      if (prod) {
+        setProduct(prod);
+        setForm({
+          name: prod.name ?? "",
+          price: prod.price ?? "",
+          currency: prod.currency ?? "USD",
+          access_days: prod.access_days ?? "",
+          is_active: prod.is_active ?? true,
+        });
+      }
+      setLoading(false);
+      setDirty(false);
+    });
+    return () => { active = false; };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [...args]);
+
+  const handleChange = (field, value) => {
+    setForm((prev) => ({ ...prev, [field]: value }));
+    setDirty(true);
+  };
+
+  const handleSave = async () => {
+    if (!form.price) return;
+    setSaving(true);
+    const saved = await saveFn(...args, {
+      name: form.name || null,
+      price: Number(form.price),
+      currency: form.currency || "USD",
+      access_days: form.access_days ? Number(form.access_days) : null,
+      is_active: form.is_active,
+    });
+    if (saved) { setProduct(saved); setDirty(false); }
+    setSaving(false);
+  };
+
+  const handleRemove = async () => {
+    setSaving(true);
+    await removeFn(...args);
+    setProduct(null);
+    setForm(EMPTY_FORM);
+    setDirty(false);
+    setSaving(false);
+  };
+
+  if (loading) {
+    return (
+      <div className="flex items-center justify-center py-8 text-muted-foreground">
+        <Spinner className="size-5" />
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-5">
+      <p className="text-xs text-muted-foreground">
+        Allow learners to purchase {label} individually via PayPal, as an alternative to a tier plan.
+      </p>
+
+      <div className="grid grid-cols-2 gap-4">
+        <div className="space-y-1.5 col-span-2">
+          <Label htmlFor="prod_name">Listing Name</Label>
+          <Input
+            id="prod_name"
+            placeholder="e.g. Real Estate Fundamentals"
+            value={form.name}
+            onChange={(e) => handleChange("name", e.target.value)}
+          />
+          <p className="text-xs text-muted-foreground">Defaults to the title if left blank.</p>
+        </div>
+        <div className="space-y-1.5">
+          <Label htmlFor="prod_price">Price <span className="text-destructive">*</span></Label>
+          <Input
+            id="prod_price"
+            type="number"
+            step="0.01"
+            min={0}
+            placeholder="0.00"
+            value={form.price}
+            onChange={(e) => handleChange("price", e.target.value)}
+          />
+        </div>
+        <div className="space-y-1.5">
+          <Label htmlFor="prod_currency">Currency</Label>
+          <Input
+            id="prod_currency"
+            maxLength={3}
+            placeholder="USD"
+            value={form.currency}
+            onChange={(e) => handleChange("currency", e.target.value.toUpperCase())}
+          />
+        </div>
+        <div className="space-y-1.5 col-span-2">
+          <Label htmlFor="prod_access">Access Duration (days)</Label>
+          <Input
+            id="prod_access"
+            type="number"
+            min={1}
+            placeholder="Leave blank for lifetime access"
+            value={form.access_days}
+            onChange={(e) => handleChange("access_days", e.target.value)}
+          />
+        </div>
+      </div>
+
+      <div className="flex items-center justify-between pt-1">
+        <div>
+          <Label>Listed for Purchase</Label>
+          <p className="text-xs text-muted-foreground">Show a "Buy" button to learners.</p>
+        </div>
+        <Switch
+          checked={form.is_active}
+          onCheckedChange={(v) => handleChange("is_active", v)}
+        />
+      </div>
+
+      <div className="flex items-center justify-between pt-2 border-t">
+        {product && (
+          <Button
+            type="button"
+            size="sm"
+            variant="outline"
+            className="text-destructive border-destructive/50 hover:bg-destructive/5"
+            disabled={saving}
+            onClick={handleRemove}
+          >
+            {saving && <Spinner className="h-3 w-3 mr-1.5" />}
+            Remove Listing
+          </Button>
+        )}
+        <Button
+          type="button"
+          size="sm"
+          className="ml-auto"
+          disabled={!dirty || saving || !form.price}
+          onClick={handleSave}
+        >
+          {saving && <Spinner className="h-3 w-3 mr-1.5" />}
+          <Save className="h-3 w-3 mr-1.5" />
+          {product ? "Update Listing" : "Create Listing"}
+        </Button>
+      </div>
+    </div>
+  );
+}

src/modules/admin/components/tiers/LessonPicker.jsx

@@ -0,0 +1,294 @@
+import { useState, useEffect, useMemo } from "react";
+import { ChevronsUpDown, Check, FileText, AlertTriangle } from "lucide-react";
+import api from "@/utils/api.util";
+import { Button }    from "@/components/ui/button";
+import { Checkbox }  from "@/components/ui/checkbox";
+import { ScrollArea } from "@/components/ui/scroll-area";
+import { Popover, PopoverContent, PopoverTrigger } from "@/components/ui/popover";
+import { Command, CommandInput, CommandEmpty, CommandList, CommandItem } from "@/components/ui/command";
+import { Skeleton }  from "@/components/ui/skeleton";
+import { cn }        from "@/lib/utils";
+
+/**
+ * LessonPicker — mirrors CoursePicker.jsx exactly, for bundling standalone
+ * Lessons (their own `subscription` field) into a tier plan.
+ *
+ * Props: same contract as CoursePicker (subscription, selectedIds, onChange,
+ * isPreloaded, currentPlanId, onConflictsChange) — see CoursePicker.jsx for
+ * the full doc comment, not repeated here.
+ */
+export function LessonPicker({ subscription, selectedIds, onChange, isPreloaded = false, currentPlanId, onConflictsChange }) {
+    const [lessons,      setLessons]      = useState([]);
+    const [loading,      setLoading]      = useState(false);
+    const [bundleAll,    setBundleAll]    = useState(true);
+    const [popoverOpen,  setPopoverOpen]  = useState(false);
+    const [search,       setSearch]       = useState("");
+
+    useEffect(() => {
+        if (!subscription) { setLessons([]); setBundleAll(true); return; }
+        setLoading(true);
+        setSearch("");
+        setBundleAll(true); // reset question to "Yes" whenever subscription changes
+
+        api.get(`/admin/lessons/by-subscription?slug=${encodeURIComponent(subscription)}`)
+            .then(({ data }) => {
+                const loaded = data.data ?? [];
+                setLessons(loaded);
+
+                if (!isPreloaded) {
+                    // AddPlan: bundle all by default
+                    setBundleAll(true);
+                    onChange(new Set(loaded.map((l) => String(l.lesson_id))));
+                } else {
+                    // EditPlan: LessonPicker mounts only after assignments loaded into selectedIds.
+                    // Detect initial mode from current selectedIds vs total lessons.
+                    const size = selectedIds.size;
+                    if (size > 0 && size < loaded.length) {
+                        // Partial selection saved previously → specific mode
+                        setBundleAll(false);
+                    } else {
+                        // All selected, or none (no lessons assigned yet) → bundle all
+                        setBundleAll(true);
+                        onChange(new Set(loaded.map((l) => String(l.lesson_id))));
+                    }
+                }
+            })
+            .catch(() => setLessons([]))
+            .finally(() => setLoading(false));
+    }, [subscription]); // eslint-disable-line react-hooks/exhaustive-deps
+
+    const filtered = useMemo(() => {
+        const q = search.toLowerCase();
+        if (!q) return lessons;
+        return lessons.filter(
+            (l) =>
+                l.title?.toLowerCase().includes(q) ||
+                l.description?.toLowerCase().includes(q)
+        );
+    }, [lessons, search]);
+
+    // Lessons already owned by a DIFFERENT plan — selecting them here will move them.
+    const isConflict = (lesson) =>
+        lesson.assigned_plan && String(lesson.assigned_plan.plan_id) !== String(currentPlanId ?? "");
+
+    // Only lessons actually SELECTED matter — unchecking a conflicting lesson clears it.
+    const conflicts = useMemo(
+        () => lessons.filter((l) => isConflict(l) && selectedIds.has(String(l.lesson_id))),
+        [lessons, currentPlanId, selectedIds] // eslint-disable-line react-hooks/exhaustive-deps
+    );
+
+    const conflictsByPlan = useMemo(() => {
+        const map = new Map();
+        conflicts.forEach((l) => {
+            const label = l.assigned_plan.label;
+            map.set(label, (map.get(label) ?? 0) + 1);
+        });
+        return [...map.entries()];
+    }, [conflicts]);
+
+    useEffect(() => {
+        onConflictsChange?.(conflicts.length);
+    }, [conflicts.length]); // eslint-disable-line react-hooks/exhaustive-deps
+
+    const toggle = (id) => {
+        const next = new Set(selectedIds);
+        if (next.has(id)) next.delete(id);
+        else next.add(id);
+        onChange(next);
+    };
+
+    const checkAll = () => onChange(new Set(lessons.map((l) => String(l.lesson_id))));
+    const resetAll = () => onChange(new Set());
+
+    // "Yes, include all" clicked
+    const handleBundleAll = () => {
+        setBundleAll(true);
+        setPopoverOpen(false);
+        onChange(new Set(lessons.map((l) => String(l.lesson_id))));
+    };
+
+    // "No, choose specific" clicked — keeps current selection (all) so admin can uncheck specific ones
+    const handleSelectSpecific = () => {
+        setBundleAll(false);
+    };
+
+    const total         = lessons.length;
+    const selectedCount = selectedIds.size;
+
+    if (!subscription) return null;
+
+    return (
+        <div className="space-y-4">
+
+            {/* ── Bundle question ──────────────────────────────────────────── */}
+            {loading ? (
+                <div className="flex gap-2">
+                    <Skeleton className="h-8 w-36" />
+                    <Skeleton className="h-8 w-40" />
+                </div>
+            ) : (
+                <div className="space-y-2.5">
+                    <p className="text-sm">
+                        Bundle <span className="font-semibold capitalize">{subscription}</span> lessons with this plan?
+                    </p>
+                    <div className="flex gap-2">
+                        <Button
+                            type="button"
+                            size="sm"
+                            variant={bundleAll ? "default" : "outline"}
+                            onClick={handleBundleAll}
+                            disabled={total === 0}
+                        >
+                            <Check className="size-3.5 mr-1.5" />
+                            Yes, include all
+                        </Button>
+                        <Button
+                            type="button"
+                            size="sm"
+                            variant={!bundleAll ? "default" : "outline"}
+                            onClick={handleSelectSpecific}
+                            disabled={total === 0}
+                        >
+                            No, choose specific
+                        </Button>
+                    </div>
+                </div>
+            )}
+
+            {/* ── Bundle all summary ───────────────────────────────────────── */}
+            {!loading && bundleAll && total > 0 && (
+                <p className="text-xs text-muted-foreground">
+                    All {total} <span className="capitalize">{subscription}</span> lesson{total !== 1 ? "s" : ""} will be included.
+                </p>
+            )}
+
+            {/* ── Already-assigned-elsewhere warning ──────────────────────── */}
+            {!loading && conflicts.length > 0 && (
+                <div className="flex items-start gap-2 rounded-lg border border-amber-300 bg-amber-50 dark:bg-amber-950/30 dark:border-amber-800 p-3 text-xs text-amber-800 dark:text-amber-300">
+                    <AlertTriangle className="size-4 shrink-0 mt-0.5" />
+                    <div className="space-y-1">
+                        <p className="font-medium">
+                            {conflicts.length} lesson{conflicts.length !== 1 ? "s" : ""} already belong{conflicts.length === 1 ? "s" : ""} to another plan.
+                        </p>
+                        <p>
+                            A lesson can only belong to one plan at a time. Assigning {conflicts.length === 1 ? "it" : "them"} here will move {conflicts.length === 1 ? "it" : "them"} out of{" "}
+                            {conflictsByPlan.map(([label, count], i) => (
+                                <span key={label}>
+                                    <span className="font-medium">{label}</span> ({count}){i < conflictsByPlan.length - 1 ? ", " : ""}
+                                </span>
+                            ))}. Uncheck them below if that's not what you want.
+                        </p>
+                    </div>
+                </div>
+            )}
+
+            {/* ── No lessons in tier ───────────────────────────────────────── */}
+            {!loading && total === 0 && (
+                <div className="flex items-center gap-2 rounded-lg border border-dashed p-4 text-sm text-muted-foreground">
+                    <FileText className="size-4 shrink-0" />
+                    No <span className="capitalize mx-1 font-medium">{subscription}</span> lessons found. Add lessons with this subscription first.
+                </div>
+            )}
+
+            {/* ── Specific picker (Popover) ─────────────────────────────────── */}
+            {!loading && !bundleAll && total > 0 && (
+                <div className="space-y-1.5">
+                    <Popover open={popoverOpen} onOpenChange={setPopoverOpen}>
+                        <PopoverTrigger asChild>
+                            <Button
+                                type="button"
+                                variant="outline"
+                                size="sm"
+                                className={cn(
+                                    "w-full justify-between gap-2",
+                                    selectedCount === 0 && "border-destructive text-destructive hover:border-destructive"
+                                )}
+                            >
+                                {selectedCount === 0
+                                    ? "No lessons selected"
+                                    : `${selectedCount} of ${total} lesson${total !== 1 ? "s" : ""} selected`
+                                }
+                                <ChevronsUpDown className="size-4 opacity-50 shrink-0" />
+                            </Button>
+                        </PopoverTrigger>
+
+                        <PopoverContent className="w-[var(--radix-popover-trigger-width)] p-0" align="start">
+                            <Command shouldFilter={false}>
+                                <CommandInput
+                                    placeholder="Search lessons…"
+                                    value={search}
+                                    onValueChange={setSearch}
+                                />
+                                <CommandList>
+                                    {filtered.length === 0 ? (
+                                        <CommandEmpty>No lessons match your search.</CommandEmpty>
+                                    ) : (
+                                        <ScrollArea className="h-64">
+                                            {filtered.map((lesson) => {
+                                                const id       = String(lesson.lesson_id);
+                                                const checked  = selectedIds.has(id);
+                                                const conflict = isConflict(lesson);
+                                                return (
+                                                    <CommandItem
+                                                        key={id}
+                                                        value={id}
+                                                        onSelect={() => toggle(id)}
+                                                        className="flex items-start gap-3 px-3 py-2.5 cursor-pointer"
+                                                    >
+                                                        <Checkbox
+                                                            checked={checked}
+                                                            onCheckedChange={() => toggle(id)}
+                                                            className="mt-0.5 shrink-0"
+                                                            onClick={(e) => e.stopPropagation()}
+                                                        />
+                                                        <div className="flex flex-col gap-0.5 min-w-0">
+                                                            <span className="text-sm font-medium leading-snug">{lesson.title}</span>
+                                                            {lesson.description && (
+                                                                <span className="text-xs text-muted-foreground line-clamp-1">
+                                                                    {lesson.description}
+                                                                </span>
+                                                            )}
+                                                            {conflict && (
+                                                                <span className="inline-flex items-center gap-1 text-[10px] font-medium text-amber-700 dark:text-amber-400 bg-amber-50 dark:bg-amber-950/40 border border-amber-200 dark:border-amber-800 rounded px-1.5 py-0.5 w-fit mt-0.5">
+                                                                    <AlertTriangle className="size-3" />
+                                                                    In "{lesson.assigned_plan.label}"
+                                                                </span>
+                                                            )}
+                                                        </div>
+                                                    </CommandItem>
+                                                );
+                                            })}
+                                        </ScrollArea>
+                                    )}
+                                </CommandList>
+
+                                {/* Popover footer */}
+                                <div className="border-t px-3 py-2 flex items-center justify-between gap-2">
+                                    <span className="text-xs text-muted-foreground">
+                                        {selectedCount} of {total} selected
+                                    </span>
+                                    <div className="flex items-center gap-2">
+                                        <Checkbox
+                                            checked={selectedCount === total ? true : selectedCount > 0 ? "indeterminate" : false}
+                                            onCheckedChange={(v) => v ? checkAll() : resetAll()}
+                                        />
+                                        <span className="text-xs text-muted-foreground select-none">
+                                            {selectedCount === total ? "Deselect all" : "Select all"}
+                                        </span>
+                                    </div>
+                                </div>
+                            </Command>
+                        </PopoverContent>
+                    </Popover>
+
+                    {selectedCount === 0 && (
+                        <p className="flex items-center gap-1.5 text-xs text-destructive">
+                            <AlertTriangle className="size-3.5 shrink-0" />
+                            Select at least one lesson to bundle with this plan.
+                        </p>
+                    )}
+                </div>
+            )}
+        </div>
+    );
+}

src/modules/admin/components/tiers/UnitPicker.jsx

@@ -0,0 +1,294 @@
+import { useState, useEffect, useMemo } from "react";
+import { ChevronsUpDown, Check, BookOpen, AlertTriangle } from "lucide-react";
+import api from "@/utils/api.util";
+import { Button }    from "@/components/ui/button";
+import { Checkbox }  from "@/components/ui/checkbox";
+import { ScrollArea } from "@/components/ui/scroll-area";
+import { Popover, PopoverContent, PopoverTrigger } from "@/components/ui/popover";
+import { Command, CommandInput, CommandEmpty, CommandList, CommandItem } from "@/components/ui/command";
+import { Skeleton }  from "@/components/ui/skeleton";
+import { cn }        from "@/lib/utils";
+
+/**
+ * UnitPicker — mirrors CoursePicker.jsx exactly, for bundling standalone
+ * Units (their own `subscription` field) into a tier plan.
+ *
+ * Props: same contract as CoursePicker (subscription, selectedIds, onChange,
+ * isPreloaded, currentPlanId, onConflictsChange) — see CoursePicker.jsx for
+ * the full doc comment, not repeated here.
+ */
+export function UnitPicker({ subscription, selectedIds, onChange, isPreloaded = false, currentPlanId, onConflictsChange }) {
+    const [units,        setUnits]        = useState([]);
+    const [loading,      setLoading]      = useState(false);
+    const [bundleAll,    setBundleAll]    = useState(true);
+    const [popoverOpen,  setPopoverOpen]  = useState(false);
+    const [search,       setSearch]       = useState("");
+
+    useEffect(() => {
+        if (!subscription) { setUnits([]); setBundleAll(true); return; }
+        setLoading(true);
+        setSearch("");
+        setBundleAll(true); // reset question to "Yes" whenever subscription changes
+
+        api.get(`/admin/units/by-subscription?slug=${encodeURIComponent(subscription)}`)
+            .then(({ data }) => {
+                const loaded = data.data ?? [];
+                setUnits(loaded);
+
+                if (!isPreloaded) {
+                    // AddPlan: bundle all by default
+                    setBundleAll(true);
+                    onChange(new Set(loaded.map((u) => String(u.unit_id))));
+                } else {
+                    // EditPlan: UnitPicker mounts only after assignments loaded into selectedIds.
+                    // Detect initial mode from current selectedIds vs total units.
+                    const size = selectedIds.size;
+                    if (size > 0 && size < loaded.length) {
+                        // Partial selection saved previously → specific mode
+                        setBundleAll(false);
+                    } else {
+                        // All selected, or none (no units assigned yet) → bundle all
+                        setBundleAll(true);
+                        onChange(new Set(loaded.map((u) => String(u.unit_id))));
+                    }
+                }
+            })
+            .catch(() => setUnits([]))
+            .finally(() => setLoading(false));
+    }, [subscription]); // eslint-disable-line react-hooks/exhaustive-deps
+
+    const filtered = useMemo(() => {
+        const q = search.toLowerCase();
+        if (!q) return units;
+        return units.filter(
+            (u) =>
+                u.title?.toLowerCase().includes(q) ||
+                u.description?.toLowerCase().includes(q)
+        );
+    }, [units, search]);
+
+    // Units already owned by a DIFFERENT plan — selecting them here will move them.
+    const isConflict = (unit) =>
+        unit.assigned_plan && String(unit.assigned_plan.plan_id) !== String(currentPlanId ?? "");
+
+    // Only units actually SELECTED matter — unchecking a conflicting unit clears it.
+    const conflicts = useMemo(
+        () => units.filter((u) => isConflict(u) && selectedIds.has(String(u.unit_id))),
+        [units, currentPlanId, selectedIds] // eslint-disable-line react-hooks/exhaustive-deps
+    );
+
+    const conflictsByPlan = useMemo(() => {
+        const map = new Map();
+        conflicts.forEach((u) => {
+            const label = u.assigned_plan.label;
+            map.set(label, (map.get(label) ?? 0) + 1);
+        });
+        return [...map.entries()];
+    }, [conflicts]);
+
+    useEffect(() => {
+        onConflictsChange?.(conflicts.length);
+    }, [conflicts.length]); // eslint-disable-line react-hooks/exhaustive-deps
+
+    const toggle = (id) => {
+        const next = new Set(selectedIds);
+        if (next.has(id)) next.delete(id);
+        else next.add(id);
+        onChange(next);
+    };
+
+    const checkAll = () => onChange(new Set(units.map((u) => String(u.unit_id))));
+    const resetAll = () => onChange(new Set());
+
+    // "Yes, include all" clicked
+    const handleBundleAll = () => {
+        setBundleAll(true);
+        setPopoverOpen(false);
+        onChange(new Set(units.map((u) => String(u.unit_id))));
+    };
+
+    // "No, choose specific" clicked — keeps current selection (all) so admin can uncheck specific ones
+    const handleSelectSpecific = () => {
+        setBundleAll(false);
+    };
+
+    const total         = units.length;
+    const selectedCount = selectedIds.size;
+
+    if (!subscription) return null;
+
+    return (
+        <div className="space-y-4">
+
+            {/* ── Bundle question ──────────────────────────────────────────── */}
+            {loading ? (
+                <div className="flex gap-2">
+                    <Skeleton className="h-8 w-36" />
+                    <Skeleton className="h-8 w-40" />
+                </div>
+            ) : (
+                <div className="space-y-2.5">
+                    <p className="text-sm">
+                        Bundle <span className="font-semibold capitalize">{subscription}</span> units with this plan?
+                    </p>
+                    <div className="flex gap-2">
+                        <Button
+                            type="button"
+                            size="sm"
+                            variant={bundleAll ? "default" : "outline"}
+                            onClick={handleBundleAll}
+                            disabled={total === 0}
+                        >
+                            <Check className="size-3.5 mr-1.5" />
+                            Yes, include all
+                        </Button>
+                        <Button
+                            type="button"
+                            size="sm"
+                            variant={!bundleAll ? "default" : "outline"}
+                            onClick={handleSelectSpecific}
+                            disabled={total === 0}
+                        >
+                            No, choose specific
+                        </Button>
+                    </div>
+                </div>
+            )}
+
+            {/* ── Bundle all summary ───────────────────────────────────────── */}
+            {!loading && bundleAll && total > 0 && (
+                <p className="text-xs text-muted-foreground">
+                    All {total} <span className="capitalize">{subscription}</span> unit{total !== 1 ? "s" : ""} will be included.
+                </p>
+            )}
+
+            {/* ── Already-assigned-elsewhere warning ──────────────────────── */}
+            {!loading && conflicts.length > 0 && (
+                <div className="flex items-start gap-2 rounded-lg border border-amber-300 bg-amber-50 dark:bg-amber-950/30 dark:border-amber-800 p-3 text-xs text-amber-800 dark:text-amber-300">
+                    <AlertTriangle className="size-4 shrink-0 mt-0.5" />
+                    <div className="space-y-1">
+                        <p className="font-medium">
+                            {conflicts.length} unit{conflicts.length !== 1 ? "s" : ""} already belong{conflicts.length === 1 ? "s" : ""} to another plan.
+                        </p>
+                        <p>
+                            A unit can only belong to one plan at a time. Assigning {conflicts.length === 1 ? "it" : "them"} here will move {conflicts.length === 1 ? "it" : "them"} out of{" "}
+                            {conflictsByPlan.map(([label, count], i) => (
+                                <span key={label}>
+                                    <span className="font-medium">{label}</span> ({count}){i < conflictsByPlan.length - 1 ? ", " : ""}
+                                </span>
+                            ))}. Uncheck them below if that's not what you want.
+                        </p>
+                    </div>
+                </div>
+            )}
+
+            {/* ── No units in tier ─────────────────────────────────────────── */}
+            {!loading && total === 0 && (
+                <div className="flex items-center gap-2 rounded-lg border border-dashed p-4 text-sm text-muted-foreground">
+                    <BookOpen className="size-4 shrink-0" />
+                    No <span className="capitalize mx-1 font-medium">{subscription}</span> units found. Add units with this subscription first.
+                </div>
+            )}
+
+            {/* ── Specific picker (Popover) ─────────────────────────────────── */}
+            {!loading && !bundleAll && total > 0 && (
+                <div className="space-y-1.5">
+                    <Popover open={popoverOpen} onOpenChange={setPopoverOpen}>
+                        <PopoverTrigger asChild>
+                            <Button
+                                type="button"
+                                variant="outline"
+                                size="sm"
+                                className={cn(
+                                    "w-full justify-between gap-2",
+                                    selectedCount === 0 && "border-destructive text-destructive hover:border-destructive"
+                                )}
+                            >
+                                {selectedCount === 0
+                                    ? "No units selected"
+                                    : `${selectedCount} of ${total} unit${total !== 1 ? "s" : ""} selected`
+                                }
+                                <ChevronsUpDown className="size-4 opacity-50 shrink-0" />
+                            </Button>
+                        </PopoverTrigger>
+
+                        <PopoverContent className="w-[var(--radix-popover-trigger-width)] p-0" align="start">
+                            <Command shouldFilter={false}>
+                                <CommandInput
+                                    placeholder="Search units…"
+                                    value={search}
+                                    onValueChange={setSearch}
+                                />
+                                <CommandList>
+                                    {filtered.length === 0 ? (
+                                        <CommandEmpty>No units match your search.</CommandEmpty>
+                                    ) : (
+                                        <ScrollArea className="h-64">
+                                            {filtered.map((unit) => {
+                                                const id       = String(unit.unit_id);
+                                                const checked  = selectedIds.has(id);
+                                                const conflict = isConflict(unit);
+                                                return (
+                                                    <CommandItem
+                                                        key={id}
+                                                        value={id}
+                                                        onSelect={() => toggle(id)}
+                                                        className="flex items-start gap-3 px-3 py-2.5 cursor-pointer"
+                                                    >
+                                                        <Checkbox
+                                                            checked={checked}
+                                                            onCheckedChange={() => toggle(id)}
+                                                            className="mt-0.5 shrink-0"
+                                                            onClick={(e) => e.stopPropagation()}
+                                                        />
+                                                        <div className="flex flex-col gap-0.5 min-w-0">
+                                                            <span className="text-sm font-medium leading-snug">{unit.title}</span>
+                                                            {unit.description && (
+                                                                <span className="text-xs text-muted-foreground line-clamp-1">
+                                                                    {unit.description}
+                                                                </span>
+                                                            )}
+                                                            {conflict && (
+                                                                <span className="inline-flex items-center gap-1 text-[10px] font-medium text-amber-700 dark:text-amber-400 bg-amber-50 dark:bg-amber-950/40 border border-amber-200 dark:border-amber-800 rounded px-1.5 py-0.5 w-fit mt-0.5">
+                                                                    <AlertTriangle className="size-3" />
+                                                                    In "{unit.assigned_plan.label}"
+                                                                </span>
+                                                            )}
+                                                        </div>
+                                                    </CommandItem>
+                                                );
+                                            })}
+                                        </ScrollArea>
+                                    )}
+                                </CommandList>
+
+                                {/* Popover footer */}
+                                <div className="border-t px-3 py-2 flex items-center justify-between gap-2">
+                                    <span className="text-xs text-muted-foreground">
+                                        {selectedCount} of {total} selected
+                                    </span>
+                                    <div className="flex items-center gap-2">
+                                        <Checkbox
+                                            checked={selectedCount === total ? true : selectedCount > 0 ? "indeterminate" : false}
+                                            onCheckedChange={(v) => v ? checkAll() : resetAll()}
+                                        />
+                                        <span className="text-xs text-muted-foreground select-none">
+                                            {selectedCount === total ? "Deselect all" : "Select all"}
+                                        </span>
+                                    </div>
+                                </div>
+                            </Command>
+                        </PopoverContent>
+                    </Popover>
+
+                    {selectedCount === 0 && (
+                        <p className="flex items-center gap-1.5 text-xs text-destructive">
+                            <AlertTriangle className="size-3.5 shrink-0" />
+                            Select at least one unit to bundle with this plan.
+                        </p>
+                    )}
+                </div>
+            )}
+        </div>
+    );
+}

src/modules/admin/config/assets/rowActions.config.jsx

@@ -1,14 +1,15 @@
 // modules/admin/config/assets/rowActions.config.jsx
 
-import { Eye, Pencil, Archive } from "lucide-react";
+import { Eye, ScanEye, Pencil, Archive } from "lucide-react";
 
 /**
  * @param {Object}   deps
  * @param {Function} deps.onView     (row) → void  — navigate to view page
+ * @param {Function} deps.onPreview  (row) → void  — open the quick-look preview dialog
  * @param {Function} deps.onEdit     (row) → void  — navigate to edit page
  * @param {Function} deps.onArchive  (row) → void  — open archive dialog
  */
-export function buildRowActions({ onView, onEdit, onArchive }) {
+export function buildRowActions({ onView, onPreview, onEdit, onArchive }) {
     return [
         {
             key:     "view",
@@ -16,6 +17,12 @@ export function buildRowActions({ onView, onEdit, onArchive }) {
             icon:    <Eye className="h-3.5 w-3.5" />,
             onClick: (row) => onView(row),
         },
+        {
+            key:     "preview",
+            label:   "Preview",
+            icon:    <ScanEye className="h-3.5 w-3.5" />,
+            onClick: (row) => onPreview(row),
+        },
         {
             key:     "edit",
             label:   "Edit Info",

src/modules/admin/pages/assets/AddAsset.jsx

@@ -9,7 +9,8 @@ import { ArrowLeft, ArrowRight, UploadCloud, X, FileVideo, FileText, Image, File
 
 import { useAssets } from "@/contexts/AdminAssetsContext";
 import { useAuth } from "@/contexts/AuthContext";
-import { MAX_ASSET_FILE_SIZE, MAX_ASSET_FILE_SIZE_LABEL } from "@/utils/assetUpload.util";
+import { MAX_ASSET_FILE_SIZE_SINGLE, MAX_ASSET_FILE_SIZE_SINGLE_LABEL } from "@/utils/assetUpload.util";
+import { formatFileSize } from "@/utils/format.util";
 import { useUnsavedChangesGuard } from "@/hooks/useUnsavedChangesGuard";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
@@ -83,7 +84,7 @@ function DropZone({ label, accept, file, onFile, onClear, error }) {
                     <div className="flex-1 min-w-0">
                         <p className="text-sm font-medium truncate">{file.name}</p>
                         <p className="text-xs text-muted-foreground">
-                            {(file.size / 1024).toFixed(1)} KB · {file.type}
+                            {formatFileSize(file.size)} · {file.type}
                         </p>
                     </div>
                     <Button
@@ -157,8 +158,8 @@ export default function AddAsset() {
     const fileType = file ? resolveFileType(file.type) : null;
 
     const setFile = (f) => {
-        if (f.size > MAX_ASSET_FILE_SIZE) {
-            setError("_file", { message: `File exceeds the ${MAX_ASSET_FILE_SIZE_LABEL} size limit.` });
+        if (f.size > MAX_ASSET_FILE_SIZE_SINGLE) {
+            setError("_file", { message: `File exceeds the ${MAX_ASSET_FILE_SIZE_SINGLE_LABEL} size limit.` });
             return;
         }
         fileRef.current = f;

src/modules/admin/pages/assets/AddAssetsBulk.jsx

@@ -10,6 +10,7 @@ import {
 import { useAssets } from "@/contexts/AdminAssetsContext";
 import { useUploadQueue } from "@/contexts/UploadQueueContext";
 import { useAuth } from "@/contexts/AuthContext";
+import { formatFileSize } from "@/utils/format.util";
 import { Button } from "@/components/ui/button";
 import { Progress } from "@/components/ui/progress";
 import {
@@ -29,12 +30,6 @@ function FileTypeIcon({ mime = "" }) {
     return <FileText className="h-8 w-8 text-orange-400 shrink-0" />;
 }
 
-function formatSize(bytes = 0) {
-    if (bytes < 1024) return `${bytes} B`;
-    if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`;
-    return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
-}
-
 // ─── Drop zone ────────────────────────────────────────────────────────────────
 
 function DropZone({ onFiles }) {
@@ -93,7 +88,7 @@ function FileRow({ job, onRetry, onRemove }) {
             <div className="flex-1 min-w-0 space-y-1.5">
                 <div className="flex items-center justify-between gap-2">
                     <p className="text-sm font-medium truncate">{job.name}</p>
-                    <span className="text-xs text-muted-foreground shrink-0">{formatSize(job.size)}</span>
+                    <span className="text-xs text-muted-foreground shrink-0">{formatFileSize(job.size)}</span>
                 </div>
                 <Progress value={job.progress} className={barClass} />
                 <div className="flex items-center gap-1.5 text-xs">

src/modules/admin/pages/assets/EditAsset.jsx

@@ -9,6 +9,7 @@ import { ArrowLeft, UploadCloud, X, FileVideo, FileText, Image, RefreshCw } from
 
 import { useAssets } from "@/contexts/AdminAssetsContext";
 import { useAssetPreviewSrc } from "@/hooks/useAssetPreviewSrc";
+import { formatFileSize } from "@/utils/format.util";
 import { useAuth } from "@/contexts/AuthContext";
 import { useUnsavedChangesGuard } from "@/hooks/useUnsavedChangesGuard";
 import { Button } from "@/components/ui/button";
@@ -46,12 +47,6 @@ function FieldError({ message }) {
     return <p className="text-xs text-destructive mt-1">{message}</p>;
 }
 
-function formatBytes(bytes) {
-    if (!bytes) return "—";
-    if (bytes < 1024) return `${bytes} B`;
-    if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`;
-    return `${(bytes / (1024 * 1024)).toFixed(2)} MB`;
-}
 
 // ─── Thumbnail Drop Zone ──────────────────────────────────────────────────────
 
@@ -249,7 +244,7 @@ export default function EditAsset() {
                             <div className="flex items-center gap-2 flex-wrap">
                                 <Badge variant="secondary" className="text-xs">{asset.file_type}</Badge>
                                 <Badge variant="outline" className="text-xs">{asset.extension?.toUpperCase()}</Badge>
-                                <span className="text-xs text-muted-foreground">{formatBytes(asset.file_size)}</span>
+                                <span className="text-xs text-muted-foreground">{formatFileSize(asset.file_size) ?? "—"}</span>
                                 {asset.resolution && (
                                     <span className="text-xs text-muted-foreground">{asset.resolution}</span>
                                 )}

src/modules/admin/pages/assets/ViewAudioAsset.jsx

@@ -1,12 +1,12 @@
 // modules/admin/pages/assets/ViewAudioAsset.jsx
 
 import { useParams, useNavigate } from "react-router-dom";
-import { ArrowLeft, Lock, Globe, Music2, Download } from "lucide-react";
+import { ArrowLeft, Lock, Globe, Music2 } from "lucide-react";
 import { useDateFormat } from "@/hooks/useDateFormat";
 
 import { useAssetFetchState } from "@/hooks/useAssetFetchState";
 import { useAssetPreviewSrc } from "@/hooks/useAssetPreviewSrc";
-import { downloadAsset } from "@/utils/media.util";
+import { formatFileSize } from "@/utils/format.util";
 import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
 import { Separator } from "@/components/ui/separator";
@@ -71,9 +71,6 @@ export default function ViewAudioAsset() {
                     <h1 className="text-xl font-semibold truncate">{a.display_name ?? a.original_name}</h1>
                     <p className="text-sm text-muted-foreground">{a.mime_type}</p>
                 </div>
-                <Button variant="outline" size="sm" onClick={() => downloadAsset(a, { scope: "admin" })}>
-                    <Download className="h-4 w-4" /> Download
-                </Button>
             </div>
 
             <div className="grid grid-cols-1 lg:grid-cols-5 gap-6">
@@ -93,7 +90,7 @@ export default function ViewAudioAsset() {
                         <p className="text-xs font-semibold uppercase tracking-wide text-muted-foreground mb-2">File Info</p>
                         <MetaRow label="Original Name" value={a.original_name} />
                         <MetaRow label="Extension" value={a.extension} />
-                        <MetaRow label="File Size" value={a.file_size ? `${(a.file_size / 1024).toFixed(1)} KB` : null} />
+                        <MetaRow label="File Size" value={formatFileSize(a.file_size)} />
                         <MetaRow label="MIME Type" value={a.mime_type} />
                         <Separator className="my-2" />
                         <p className="text-xs font-semibold uppercase tracking-wide text-muted-foreground mb-2">Storage</p>

src/modules/admin/pages/assets/ViewDocumentAsset.jsx

@@ -1,17 +1,16 @@
 // modules/admin/pages/assets/ViewDocumentAsset.jsx
 
 import { useParams, useNavigate } from "react-router-dom";
-import { ArrowLeft, Lock, Globe, FileText, Download } from "lucide-react";
+import { ArrowLeft, Lock, Globe, FileText } from "lucide-react";
 import { useDateFormat } from "@/hooks/useDateFormat";
 
 import { useAssetFetchState } from "@/hooks/useAssetFetchState";
 import { useAssetPreviewSrc } from "@/hooks/useAssetPreviewSrc";
-import { downloadAsset } from "@/utils/media.util";
-import { Spinner }   from "@/components/ui/spinner";
+import { formatFileSize } from "@/utils/format.util";
 import { Badge }     from "@/components/ui/badge";
 import { Button }    from "@/components/ui/button";
 import { Separator } from "@/components/ui/separator";
-import { MediaFallback } from "@/components/generic/MediaFallback";
+import FileZoomViewer from "@/components/generic/FileZoomViewer";
 import AssetPageLoader from "@/components/generic/AssetLoader";
 
 function MetaRow({ label, value }) {
@@ -32,7 +31,7 @@ export default function ViewDocumentAsset() {
     const { fmtDateTime } = useDateFormat();
 
     const { asset: selectedAsset, loading, notFound } = useAssetFetchState(assetId);
-    const { src: streamUrl } = useAssetPreviewSrc(selectedAsset, { scope: "admin" });
+    const { src: streamUrl, loading: previewLoading } = useAssetPreviewSrc(selectedAsset, { scope: "admin" });
 
     if (loading) {
         return <AssetPageLoader />;
@@ -48,7 +47,9 @@ export default function ViewDocumentAsset() {
     }
 
     const a = selectedAsset;
-    const canPreview = PREVIEWABLE.includes((a.extension ?? "").toLowerCase());
+    const ext = (a.extension ?? "").toLowerCase();
+    const canPreview = PREVIEWABLE.includes(ext);
+    const isPdf = ext === "pdf";
 
     return (
         <div className="max-w-7xl mx-auto px-4 py-6 space-y-6">
@@ -62,16 +63,22 @@ export default function ViewDocumentAsset() {
                     <h1 className="text-xl font-semibold truncate">{a.display_name ?? a.original_name}</h1>
                     <p className="text-sm text-muted-foreground">{a.mime_type}</p>
                 </div>
-                <Button variant="outline" size="sm" onClick={() => downloadAsset(a, { scope: "admin" })}>
-                    <Download className="h-4 w-4" /> Download
-                </Button>
             </div>
 
             <div className="grid grid-cols-1 lg:grid-cols-5 gap-6">
 
                 {/* ── Document preview ── */}
                 <div className="lg:col-span-3">
-                    {canPreview && streamUrl ? (
+                    {isPdf ? (
+                        <div className="rounded-lg border overflow-hidden">
+                            <FileZoomViewer
+                                src={streamUrl}
+                                mimeType={a.mime_type}
+                                fileName={a.display_name ?? a.original_name}
+                                loading={previewLoading}
+                            />
+                        </div>
+                    ) : canPreview && streamUrl ? (
                         <div className="rounded-lg border overflow-hidden bg-white" style={{ height: 600 }}>
                             <iframe
                                 src={streamUrl}
@@ -96,7 +103,7 @@ export default function ViewDocumentAsset() {
                         <p className="text-xs font-semibold uppercase tracking-wide text-muted-foreground mb-2">File Info</p>
                         <MetaRow label="Original Name" value={a.original_name} />
                         <MetaRow label="Extension"     value={a.extension} />
-                        <MetaRow label="File Size"     value={a.file_size ? `${(a.file_size / 1024).toFixed(1)} KB` : null} />
+                        <MetaRow label="File Size"     value={formatFileSize(a.file_size)} />
                         <MetaRow label="MIME Type"     value={a.mime_type} />
                         <Separator className="my-2" />
                         <p className="text-xs font-semibold uppercase tracking-wide text-muted-foreground mb-2">Storage</p>

src/modules/admin/pages/assets/ViewImageAsset.jsx

@@ -1,16 +1,16 @@
 // modules/admin/pages/assets/ViewImageAsset.jsx
 
 import { useParams, useNavigate } from "react-router-dom";
-import { ArrowLeft, Lock, Globe, Download } from "lucide-react";
+import { ArrowLeft, Lock, Globe } from "lucide-react";
 import { useDateFormat } from "@/hooks/useDateFormat";
 
 import { useAssetFetchState } from "@/hooks/useAssetFetchState";
 import { useAssetPreviewSrc } from "@/hooks/useAssetPreviewSrc";
-import { downloadAsset } from "@/utils/media.util";
+import { formatFileSize } from "@/utils/format.util";
 import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
 import { Separator } from "@/components/ui/separator";
-import { MediaFallback } from "@/components/generic/MediaFallback";
+import FileZoomViewer from "@/components/generic/FileZoomViewer";
 import AssetPageLoader from "@/components/generic/AssetLoader";
 
 
@@ -30,7 +30,7 @@ export default function ViewImageAsset() {
     const { fmtDateTime } = useDateFormat();
 
     const { asset: selectedAsset, loading, notFound } = useAssetFetchState(assetId);
-    const { src: streamUrl } = useAssetPreviewSrc(selectedAsset, { scope: "admin" });
+    const { src: streamUrl, loading: previewLoading } = useAssetPreviewSrc(selectedAsset, { scope: "admin" });
 
     if (loading) {
         return <AssetPageLoader />;
@@ -59,26 +59,18 @@ export default function ViewImageAsset() {
                     <h1 className="text-xl font-semibold truncate">{a.display_name ?? a.original_name}</h1>
                     <p className="text-sm text-muted-foreground">{a.mime_type}</p>
                 </div>
-                <Button variant="outline" size="sm" onClick={() => downloadAsset(a, { scope: "admin" })}>
-                    <Download className="h-4 w-4" /> Download
-                </Button>
             </div>
 
             <div className="grid grid-cols-1 lg:grid-cols-5 gap-6">
 
                 {/* ── Image preview ── */}
-                <div className="lg:col-span-3 rounded-lg border bg-muted/30 overflow-hidden flex items-center justify-center min-h-64">
-                    {streamUrl ? (
-                        <img
+                <div className="lg:col-span-3 rounded-lg border overflow-hidden">
+                    <FileZoomViewer
                         src={streamUrl}
-                            alt={a.display_name ?? a.original_name}
-                            className="max-w-full max-h-[520px] object-contain"
-                            draggable={false}
-                            onContextMenu={(e) => e.preventDefault()}
+                        mimeType={a.mime_type}
+                        fileName={a.display_name ?? a.original_name}
+                        loading={previewLoading}
                     />
-                    ) : (
-                        <MediaFallback className="size-full" />
-                    )}
                 </div>
 
                 {/* ── Metadata panel ── */}
@@ -87,7 +79,7 @@ export default function ViewImageAsset() {
                         <p className="text-xs font-semibold uppercase tracking-wide text-muted-foreground mb-2">File Info</p>
                         <MetaRow label="Original Name" value={a.original_name} />
                         <MetaRow label="Extension" value={a.extension} />
-                        <MetaRow label="File Size" value={a.file_size ? `${(a.file_size / 1024).toFixed(1)} KB` : null} />
+                        <MetaRow label="File Size" value={formatFileSize(a.file_size)} />
                         <MetaRow label="Resolution" value={a.resolution} />
                         <MetaRow label="Dimensions" value={a.width && a.height ? `${a.width} × ${a.height}` : null} />
                         <Separator className="my-2" />

src/modules/admin/pages/assets/ViewVideoAsset.jsx

@@ -1,16 +1,16 @@
 // modules/admin/pages/assets/ViewVideoAsset.jsx
 
 import { useParams, useNavigate } from "react-router-dom";
-import { ArrowLeft, Lock, Globe, Download } from "lucide-react";
+import { ArrowLeft, Lock, Globe } from "lucide-react";
 import { useDateFormat } from "@/hooks/useDateFormat";
 
 import { useAssetFetchState } from "@/hooks/useAssetFetchState";
-import { useAssetPreviewSrc } from "@/hooks/useAssetPreviewSrc";
-import { downloadAsset } from "@/utils/media.util";
+import { formatFileSize } from "@/utils/format.util";
 import { Badge }     from "@/components/ui/badge";
 import { Button }    from "@/components/ui/button";
 import { Separator } from "@/components/ui/separator";
-import { MediaFallback } from "@/components/generic/MediaFallback";
+import { VideoBlock } from "@/components/generic/Blocks/Admin/VideoBlock";
+import { TranscodeStatusBanner } from "@/components/generic/TranscodeStatusBanner";
 import AssetPageLoader from "@/components/generic/AssetLoader";
 
 function MetaRow({ label, value }) {
@@ -39,7 +39,6 @@ export default function ViewVideoAsset() {
     const { fmtDateTime } = useDateFormat();
 
     const { asset: selectedAsset, loading, notFound } = useAssetFetchState(assetId);
-    const { src: streamUrl } = useAssetPreviewSrc(selectedAsset, { scope: "admin" });
 
     if (loading) {
         return <AssetPageLoader />;
@@ -68,33 +67,25 @@ export default function ViewVideoAsset() {
                     <h1 className="text-xl font-semibold truncate">{a.display_name ?? a.original_name}</h1>
                     <p className="text-sm text-muted-foreground">{a.mime_type}</p>
                 </div>
-                <Button variant="outline" size="sm" onClick={() => downloadAsset(a, { scope: "admin" })}>
-                    <Download className="h-4 w-4" /> Download
-                </Button>
             </div>
 
             <div className="grid grid-cols-1 lg:grid-cols-5 gap-6">
 
                 {/* ── Video player ── */}
                 <div className="lg:col-span-3 space-y-3">
-                    <div className="rounded-lg border bg-black overflow-hidden aspect-video flex items-center justify-center">
-                        {streamUrl ? (
-                            <video
-                                key={streamUrl}
-                                controls
-                                controlsList="nodownload"
-                                disablePictureInPicture
-                                onContextMenu={(e) => e.preventDefault()}
-                                className="w-full h-full"
-                                poster={a.thumbnail_url ?? undefined}
-                            >
-                                <source src={streamUrl} type={a.mime_type ?? "video/mp4"} />
-                                Your browser does not support the video tag.
-                            </video>
-                        ) : (
-                            <MediaFallback className="size-full" />
-                        )}
-                    </div>
+                    <TranscodeStatusBanner status={a.transcode_status} />
+                    <VideoBlock
+                        readOnly
+                        onUpdate={() => {}}
+                        content={{
+                            asset_id:         a.asset_id,
+                            storage_provider: a.storage_provider,
+                            url:              a.file_url,
+                            thumbnail_url:    a.thumbnail_url,
+                            title:            a.display_name ?? a.original_name,
+                            tag:              a.extension?.toUpperCase() ?? "",
+                        }}
+                    />
 
                     {/* Thumbnail strip */}
                     {a.thumbnail_url && (
@@ -117,7 +108,7 @@ export default function ViewVideoAsset() {
                         <p className="text-xs font-semibold uppercase tracking-wide text-muted-foreground mb-2">Video Info</p>
                         <MetaRow label="Original Name" value={a.original_name} />
                         <MetaRow label="Extension"     value={a.extension} />
-                        <MetaRow label="File Size"     value={a.file_size ? `${(a.file_size / (1024 * 1024)).toFixed(2)} MB` : null} />
+                        <MetaRow label="File Size"     value={formatFileSize(a.file_size)} />
                         <MetaRow label="Resolution"    value={a.resolution} />
                         <MetaRow label="Dimensions"    value={a.width && a.height ? `${a.width} × ${a.height}` : null} />
                         <MetaRow label="Duration"      value={formatDuration(a.duration)} />

src/modules/admin/pages/library/lessons/AddLibraryLesson.jsx

@@ -1,4 +1,4 @@
-import { useState } from "react";
+import { useEffect, useState } from "react";
 import { useNavigate, useSearchParams } from "react-router-dom";
 import { useForm, useWatch } from "react-hook-form";
 import { z } from "zod";
@@ -14,12 +14,16 @@ import { useCourses } from "@/contexts/AdminCoursesContext";
 import DraftRequirementsEditor, { DraftRequirementsSummary } from "@/modules/admin/components/courses/DraftRequirementsEditor";
 import { useAuth } from "@/contexts/AuthContext";
 import { PageMeta } from "@/contexts/MetadataContext";
+import api from "@/utils/api.util";
 import { cn } from "@/lib/utils";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { Textarea } from "@/components/ui/textarea";
 import { Spinner } from "@/components/ui/spinner";
+import {
+  Select, SelectContent, SelectItem, SelectTrigger, SelectValue,
+} from "@/components/ui/select";
 import {
   Drawer, DrawerContent, DrawerHeader, DrawerTitle, DrawerDescription,
   DrawerFooter, DrawerClose,
@@ -36,10 +40,11 @@ function makeBlock(type) {
 const schema = z.object({
   title: z.string().min(1, "Title is required."),
   description: z.string().optional(),
+  subscription: z.string().optional(),
   blocks: z.array(z.any()).optional(),
 });
 
-const DEFAULT_VALUES = { title: "", description: "", blocks: [] };
+const DEFAULT_VALUES = { title: "", description: "", subscription: "", blocks: [] };
 
 const STEPS = [
   { id: 0, label: "Lesson",       icon: FileText },
@@ -50,7 +55,7 @@ const STEPS = [
 
 // Fields validated with trigger() before advancing past each step.
 // Empty array means "validate the whole form" (nothing new to check that step).
-const STEP_FIELDS = [["title", "description"], [], []];
+const STEP_FIELDS = [["title", "description", "subscription"], [], []];
 
 function FieldError({ message }) {
   if (!message) return null;
@@ -58,7 +63,9 @@ function FieldError({ message }) {
 }
 
 // ─── Step 1 — Lesson ───────────────────────────────────────────────────────────
-function StepLesson({ register, errors }) {
+function StepLesson({ register, errors, control, setValue, tierCategories }) {
+  const watchedSubscr = useWatch({ control, name: "subscription" });
+
   return (
     <div className="space-y-5">
       <div className="space-y-1.5">
@@ -71,6 +78,29 @@ function StepLesson({ register, errors }) {
         <Label htmlFor="description">Description</Label>
         <Textarea id="description" placeholder="Optional description" rows={3} {...register("description")} />
       </div>
+
+      <div className="space-y-1.5">
+        <Label>Subscription</Label>
+        <Select
+          value={watchedSubscr || "__open"}
+          onValueChange={(val) => setValue("subscription", val === "__open" ? "" : val, { shouldDirty: true })}
+        >
+          <SelectTrigger>
+            <SelectValue placeholder="No tier gate" />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value="__open">No tier gate (open)</SelectItem>
+            {tierCategories.map((c) => (
+              <SelectItem key={c.slug} value={c.slug}>
+                {c.name}
+              </SelectItem>
+            ))}
+          </SelectContent>
+        </Select>
+        <p className="text-xs text-muted-foreground">
+          Optional. Gates this lesson directly, independent of any unit it may later be attached to.
+        </p>
+      </div>
     </div>
   );
 }
@@ -183,7 +213,9 @@ function SummaryRow({ label, value }) {
   );
 }
 
-function StepReview({ data, attachUnitId, requirements }) {
+function StepReview({ data, attachUnitId, requirements, tierCategories }) {
+  const tierName = tierCategories.find((c) => c.slug === data.subscription)?.name;
+
   return (
     <div className="space-y-4">
       <div className="border border-border rounded-lg p-4 space-y-1">
@@ -193,6 +225,7 @@ function StepReview({ data, attachUnitId, requirements }) {
         </div>
         <SummaryRow label="Title" value={data.title} />
         <SummaryRow label="Description" value={data.description} />
+        <SummaryRow label="Subscription" value={tierName || "No tier gate (open)"} />
         <SummaryRow label="Page content" value={`${(data.blocks ?? []).length} block(s)`} />
         {attachUnitId && <SummaryRow label="Attaches to" value="The unit you came from" />}
       </div>
@@ -215,6 +248,13 @@ export default function AddLibraryLesson() {
 
   const [step, setStep] = useState(0);
   const [requirements, setRequirements] = useState([]);
+  const [tierCategories, setTierCategories] = useState([]);
+
+  useEffect(() => {
+    api.get("/admin/tiers/categories")
+      .then(({ data }) => setTierCategories((data.data ?? []).filter((c) => c.is_active)))
+      .catch(() => {});
+  }, []);
 
   const {
     register, control, trigger, getValues, setValue,
@@ -249,6 +289,7 @@ export default function AddLibraryLesson() {
     const result = await createLesson({
       title: data.title,
       description: data.description || null,
+      subscription: data.subscription || null,
       ...(attachUnitId ? { unit_id: attachUnitId } : {}),
       createdBy: user?.user_id,
     });
@@ -332,7 +373,7 @@ export default function AddLibraryLesson() {
             <h2 className="text-base font-medium mb-4">{STEPS[step].label}</h2>
 
             {step === 0 && (
-              <StepLesson register={register} errors={errors} />
+              <StepLesson register={register} errors={errors} control={control} setValue={setValue} tierCategories={tierCategories} />
             )}
             {step === 1 && (
               <StepPageBuilder control={control} setValue={setValue} getValues={getValues} />
@@ -345,7 +386,7 @@ export default function AddLibraryLesson() {
               />
             )}
             {step === 3 && (
-              <StepReview data={getValues()} attachUnitId={attachUnitId} requirements={requirements} />
+              <StepReview data={getValues()} attachUnitId={attachUnitId} requirements={requirements} tierCategories={tierCategories} />
             )}
           </div>
 

src/modules/admin/pages/library/lessons/EditLibraryLesson.jsx

@@ -1,6 +1,6 @@
-import { useEffect } from "react";
+import { useEffect, useState } from "react";
 import { useNavigate, useParams } from "react-router-dom";
-import { useForm } from "react-hook-form";
+import { useForm, useWatch } from "react-hook-form";
 import { z } from "zod";
 import { zodResolver } from "@hookform/resolvers/zod";
 import { ArrowLeft } from "lucide-react";
@@ -9,17 +9,23 @@ import { useLibrary } from "@/contexts/AdminLibraryContext";
 import { useCourses } from "@/contexts/AdminCoursesContext";
 import { useAuth } from "@/contexts/AuthContext";
 import { PageMeta } from "@/contexts/MetadataContext";
+import api from "@/utils/api.util";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { Textarea } from "@/components/ui/textarea";
 import { Spinner } from "@/components/ui/spinner";
+import {
+  Select, SelectContent, SelectItem, SelectTrigger, SelectValue,
+} from "@/components/ui/select";
 import { useUnsavedChangesGuard } from "@/hooks/useUnsavedChangesGuard";
 import CompletionRequirementBuilder from "@/modules/admin/components/courses/CompletionRequirementBuilder";
+import ProductPricingCard from "@/modules/admin/components/products/ProductPricingCard";
 
 const schema = z.object({
   title: z.string().min(1, "Title is required."),
   description: z.string().optional(),
+  subscription: z.string().optional(),
 });
 
 function FieldError({ message }) {
@@ -30,29 +36,38 @@ function FieldError({ message }) {
 export default function EditLibraryLesson() {
   const navigate = useNavigate();
   const { lessonId } = useParams();
-  const { fetchLesson, updateLesson, lesson, loading } = useLibrary();
+  const { fetchLesson, updateLesson, lesson, loading, fetchLessonProduct, saveLessonProduct, removeLessonProduct } = useLibrary();
   const { fetchLessonRequirements, syncLessonRequirements } = useCourses();
   const { user } = useAuth();
 
-  const { register, handleSubmit, reset, formState: { errors, isDirty } } = useForm({
+  const [tierCategories, setTierCategories] = useState([]);
+  useEffect(() => {
+    api.get("/admin/tiers/categories")
+      .then(({ data }) => setTierCategories((data.data ?? []).filter((c) => c.is_active)))
+      .catch(() => {});
+  }, []);
+
+  const { register, handleSubmit, reset, control, setValue, formState: { errors, isDirty } } = useForm({
     resolver: zodResolver(schema),
-    defaultValues: { title: "", description: "" },
+    defaultValues: { title: "", description: "", subscription: "" },
   });
 
   const { bypassOnce, dialog: unsavedChangesDialog } = useUnsavedChangesGuard(isDirty);
 
+  const watchedSubscr = useWatch({ control, name: "subscription" });
+
   useEffect(() => {
     fetchLesson(lessonId);
   }, [lessonId]);
 
   useEffect(() => {
     if (lesson && String(lesson.lesson_id) === String(lessonId)) {
-      reset({ title: lesson.title ?? "", description: lesson.description ?? "" });
+      reset({ title: lesson.title ?? "", description: lesson.description ?? "", subscription: lesson.subscription ?? "" });
     }
   }, [lesson, lessonId, reset]);
 
   const onSubmit = async (data) => {
-    const result = await updateLesson(lessonId, { ...data, updatedBy: user?.user_id });
+    const result = await updateLesson(lessonId, { ...data, subscription: data.subscription || null, updatedBy: user?.user_id });
     if (!result) return;
     bypassOnce();
     navigate(`/admin/lessons/${lessonId}/view`);
@@ -90,6 +105,29 @@ export default function EditLibraryLesson() {
                 <Textarea id="description" placeholder="Optional description" rows={3} {...register("description")} />
               </div>
 
+              <div className="space-y-1.5">
+                <Label>Subscription</Label>
+                <Select
+                  value={watchedSubscr || "__open"}
+                  onValueChange={(val) => setValue("subscription", val === "__open" ? "" : val, { shouldDirty: true })}
+                >
+                  <SelectTrigger>
+                    <SelectValue placeholder="No tier gate" />
+                  </SelectTrigger>
+                  <SelectContent>
+                    <SelectItem value="__open">No tier gate (open)</SelectItem>
+                    {tierCategories.map((c) => (
+                      <SelectItem key={c.slug} value={c.slug}>
+                        {c.name}
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
+                <p className="text-xs text-muted-foreground">
+                  Optional. Gates this lesson directly, independent of any unit it may later be attached to.
+                </p>
+              </div>
+
             </div>
 
             <div className="flex justify-end gap-3">
@@ -115,6 +153,20 @@ export default function EditLibraryLesson() {
               args={[null, null, lessonId]}
             />
           </div>
+
+          <div className="rounded-lg border bg-card p-6 space-y-4 mt-6">
+            <div>
+              <h2 className="text-sm font-semibold">Pricing</h2>
+              <p className="text-xs text-muted-foreground">Optional individual-purchase listing for this lesson.</p>
+            </div>
+            <ProductPricingCard
+              label="this lesson"
+              fetchFn={fetchLessonProduct}
+              saveFn={saveLessonProduct}
+              removeFn={removeLessonProduct}
+              args={[lessonId]}
+            />
+          </div>
         </div>
       </div>
 

src/modules/admin/pages/library/lessons/ViewLibraryLesson.jsx

@@ -75,7 +75,7 @@ export default function ViewLibraryLesson() {
             </div>
 
             {/* Stats row */}
-            <div className="grid grid-cols-2 lg:grid-cols-4 gap-3">
+            <div className="grid grid-cols-2 lg:grid-cols-5 gap-3">
               <div className="bg-muted/60 rounded-lg p-3 space-y-1">
                 <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Blocks</p>
                 <p className="font-semibold text-sm">{blocks.length}</p>
@@ -97,6 +97,12 @@ export default function ViewLibraryLesson() {
                   {units.length > 0 ? `${units.length} unit${units.length === 1 ? "" : "s"}` : "Standalone"}
                 </p>
               </div>
+              <div className="bg-muted/60 rounded-lg p-3 space-y-1">
+                <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Subscription</p>
+                <Badge variant={lesson?.subscription ? "outline" : "secondary"} className="capitalize">
+                  {lesson?.subscription ?? "No tier gate"}
+                </Badge>
+              </div>
             </div>
 
             {/* Attached units */}

src/modules/admin/pages/library/units/EditLibraryUnit.jsx

@@ -11,6 +11,7 @@ import { useAuth } from "@/contexts/AuthContext";
 import { PageMeta } from "@/contexts/MetadataContext";
 import api from "@/utils/api.util";
 import CompletionRequirementBuilder from "@/modules/admin/components/courses/CompletionRequirementBuilder";
+import ProductPricingCard from "@/modules/admin/components/products/ProductPricingCard";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
@@ -35,7 +36,7 @@ function FieldError({ message }) {
 export default function EditLibraryUnit() {
   const navigate = useNavigate();
   const { unitId } = useParams();
-  const { fetchUnit, updateUnit, unit, loading } = useLibrary();
+  const { fetchUnit, updateUnit, unit, loading, fetchUnitProduct, saveUnitProduct, removeUnitProduct } = useLibrary();
   const { fetchUnitRequirements, syncUnitRequirements } = useCourses();
   const { user } = useAuth();
 
@@ -152,6 +153,20 @@ export default function EditLibraryUnit() {
               args={[null, unitId]}
             />
           </div>
+
+          <div className="rounded-lg border bg-card p-6 space-y-4 mt-6">
+            <div>
+              <h2 className="text-sm font-semibold">Pricing</h2>
+              <p className="text-xs text-muted-foreground">Optional individual-purchase listing for this unit.</p>
+            </div>
+            <ProductPricingCard
+              label="this unit"
+              fetchFn={fetchUnitProduct}
+              saveFn={saveUnitProduct}
+              removeFn={removeUnitProduct}
+              args={[unitId]}
+            />
+          </div>
         </div>
       </div>
 

src/modules/admin/pages/library/units/ViewLibraryUnit.jsx

@@ -106,7 +106,7 @@ export default function ViewLibraryUnit() {
             </div>
 
             {/* Stats row */}
-            <div className="grid grid-cols-2 lg:grid-cols-4 gap-3">
+            <div className="grid grid-cols-2 lg:grid-cols-5 gap-3">
               <div className="bg-muted/60 rounded-lg p-3 space-y-1">
                 <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Lessons</p>
                 <p className="font-semibold text-sm">{lessons.length}</p>
@@ -125,6 +125,12 @@ export default function ViewLibraryUnit() {
                   {courses.length > 0 ? `${courses.length} course${courses.length === 1 ? "" : "s"}` : "Standalone"}
                 </p>
               </div>
+              <div className="bg-muted/60 rounded-lg p-3 space-y-1">
+                <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Subscription</p>
+                <Badge variant={unit?.subscription ? "outline" : "secondary"} className="capitalize">
+                  {unit?.subscription ?? "No tier gate"}
+                </Badge>
+              </div>
             </div>
 
             {/* Attached courses */}

src/modules/admin/pages/tiers/AddPlan.jsx

@@ -14,6 +14,8 @@ import { Spinner } from "@/components/ui/spinner";
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
 import { PageMeta } from "@/contexts/MetadataContext";
 import { CoursePicker } from "@/modules/admin/components/tiers/CoursePicker";
+import { UnitPicker } from "@/modules/admin/components/tiers/UnitPicker";
+import { LessonPicker } from "@/modules/admin/components/tiers/LessonPicker";
 import { CurrencyPicker } from "@/modules/admin/components/tiers/CurrencyPicker";
 import api from "@/utils/api.util";
 import { useUnsavedChangesGuard } from "@/hooks/useUnsavedChangesGuard";
@@ -75,7 +77,7 @@ function SectionCard({ title, children }) {
 const STEPS = [
     { label: "Category & Label",  description: "Tier category, label & description" },
     { label: "Duration & Pricing", description: "Billing period, price & currency"   },
-    { label: "Assigned Courses",  description: "Choose which courses this unlocks"   },
+    { label: "Bundles",  description: "Choose which courses, units & lessons this unlocks"   },
 ];
 
 function StepIndicator({ steps, current, maxStepReached, onStepClick }) {
@@ -144,6 +146,10 @@ export default function AddPlan() {
     const [currencies,        setCurrencies]        = useState([]);
     const [selectedCourseIds, setSelectedCourseIds] = useState(new Set());
     const [courseConflicts,   setCourseConflicts]   = useState(0);
+    const [selectedUnitIds,   setSelectedUnitIds]   = useState(new Set());
+    const [unitConflicts,     setUnitConflicts]     = useState(0);
+    const [selectedLessonIds, setSelectedLessonIds] = useState(new Set());
+    const [lessonConflicts,   setLessonConflicts]   = useState(0);
 
     useEffect(() => {
         api.get("/admin/tiers/categories")
@@ -176,10 +182,11 @@ export default function AddPlan() {
         insertFeature(index + 1, lines.slice(1).map((text) => ({ text })));
     };
 
-    // selectedCourseIds lives outside the form — this is a create page so it
-    // always starts empty, meaning any selection is a genuine unsaved change.
+    // selectedCourseIds/selectedUnitIds/selectedLessonIds live outside the form
+    // — this is a create page so they always start empty, meaning any
+    // selection is a genuine unsaved change.
     const { bypassOnce, dialog: unsavedChangesDialog } = useUnsavedChangesGuard(
-        isDirty || selectedCourseIds.size > 0
+        isDirty || selectedCourseIds.size > 0 || selectedUnitIds.size > 0 || selectedLessonIds.size > 0
     );
 
     const selectedCategoryId = watch("tier_category_id");
@@ -190,10 +197,14 @@ export default function AddPlan() {
         return categories.find((c) => String(c.tier_category_id) === selectedCategoryId)?.slug ?? null;
     }, [selectedCategoryId, categories]);
 
-    // Reset picker when category changes
+    // Reset pickers when category changes
     useEffect(() => {
         setSelectedCourseIds(new Set());
         setCourseConflicts(0);
+        setSelectedUnitIds(new Set());
+        setUnitConflicts(0);
+        setSelectedLessonIds(new Set());
+        setLessonConflicts(0);
     }, [categorySlug]);
 
     const STEP_FIELDS = [
@@ -220,12 +231,22 @@ export default function AddPlan() {
         const result = await createPlan(values);
         if (!result) return;
 
-        // Sync selected courses
+        // Sync selected bundles
         if (selectedCourseIds.size > 0) {
             await api.post(`/admin/tiers/plans/${result.plan_id}/courses`, {
                 course_ids: [...selectedCourseIds].map(Number),
             }).catch(() => {});
         }
+        if (selectedUnitIds.size > 0) {
+            await api.post(`/admin/tiers/plans/${result.plan_id}/units`, {
+                unit_ids: [...selectedUnitIds].map(Number),
+            }).catch(() => {});
+        }
+        if (selectedLessonIds.size > 0) {
+            await api.post(`/admin/tiers/plans/${result.plan_id}/lessons`, {
+                lesson_ids: [...selectedLessonIds].map(Number),
+            }).catch(() => {});
+        }
 
         bypassOnce();
         navigate(`/admin/tiers/plans`);
@@ -401,15 +422,31 @@ export default function AddPlan() {
                             </SectionCard>
                         )}
 
-                        {/* ── Step 2: Assigned Courses ── */}
+                        {/* ── Step 2: Bundles ── */}
                         {currentStep === 2 && (
-                            <SectionCard title="Assigned Courses" description="Choose which courses this plan unlocks.">
+                            <SectionCard title="Bundles" description="Choose which courses, units, and lessons this plan unlocks.">
                                 <CoursePicker
                                     subscription={categorySlug}
                                     selectedIds={selectedCourseIds}
                                     onChange={setSelectedCourseIds}
                                     onConflictsChange={setCourseConflicts}
                                 />
+                                <div className="border-t pt-5">
+                                    <UnitPicker
+                                        subscription={categorySlug}
+                                        selectedIds={selectedUnitIds}
+                                        onChange={setSelectedUnitIds}
+                                        onConflictsChange={setUnitConflicts}
+                                    />
+                                </div>
+                                <div className="border-t pt-5">
+                                    <LessonPicker
+                                        subscription={categorySlug}
+                                        selectedIds={selectedLessonIds}
+                                        onChange={setSelectedLessonIds}
+                                        onConflictsChange={setLessonConflicts}
+                                    />
+                                </div>
                             </SectionCard>
                         )}
 
@@ -432,7 +469,7 @@ export default function AddPlan() {
                                 <Button
                                     type="button"
                                     onClick={handleSubmit(onSubmit)}
-                                    disabled={loading || catLoading || !selectedCategoryId || courseConflicts > 0}
+                                    disabled={loading || catLoading || !selectedCategoryId || courseConflicts > 0 || unitConflicts > 0 || lessonConflicts > 0}
                                 >
                                     {loading && <Spinner className="h-4 w-4 mr-2" />}
                                     Create Plan

src/modules/admin/pages/tiers/EditPlan.jsx

@@ -17,6 +17,8 @@ import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@
 import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogFooter, DialogDescription } from "@/components/ui/dialog";
 import { PageMeta } from "@/contexts/MetadataContext";
 import { CoursePicker } from "@/modules/admin/components/tiers/CoursePicker";
+import { UnitPicker } from "@/modules/admin/components/tiers/UnitPicker";
+import { LessonPicker } from "@/modules/admin/components/tiers/LessonPicker";
 import { CurrencyPicker } from "@/modules/admin/components/tiers/CurrencyPicker";
 import api from "@/utils/api.util";
 import { useUnsavedChangesGuard } from "@/hooks/useUnsavedChangesGuard";
@@ -87,6 +89,12 @@ export default function EditPlan() {
   const [selectedCourseIds,   setSelectedCourseIds]   = useState(new Set());
   const [coursesLoaded,       setCoursesLoaded]       = useState(false);
   const [courseConflicts,     setCourseConflicts]     = useState(0);
+  const [selectedUnitIds,     setSelectedUnitIds]     = useState(new Set());
+  const [unitsLoaded,         setUnitsLoaded]         = useState(false);
+  const [unitConflicts,       setUnitConflicts]       = useState(0);
+  const [selectedLessonIds,   setSelectedLessonIds]   = useState(new Set());
+  const [lessonsLoaded,       setLessonsLoaded]       = useState(false);
+  const [lessonConflicts,     setLessonConflicts]     = useState(0);
   const [currencies,          setCurrencies]          = useState([]);
   const [impactDialog,        setImpactDialog]        = useState(false);
   const [impactCount,         setImpactCount]         = useState(0);
@@ -150,6 +158,29 @@ export default function EditPlan() {
       .catch(() => setCoursesLoaded(true));
   }, [planId]);
 
+  // Load existing assigned units/lessons the same way
+  useEffect(() => {
+    if (!planId || unitsLoaded) return;
+    api.get(`/admin/tiers/${planId}/units`)
+      .then(({ data }) => {
+        const ids = (data.data ?? []).map((u) => String(u.unit_id));
+        setSelectedUnitIds(new Set(ids));
+        setUnitsLoaded(true);
+      })
+      .catch(() => setUnitsLoaded(true));
+  }, [planId]);
+
+  useEffect(() => {
+    if (!planId || lessonsLoaded) return;
+    api.get(`/admin/tiers/${planId}/lessons`)
+      .then(({ data }) => {
+        const ids = (data.data ?? []).map((l) => String(l.lesson_id));
+        setSelectedLessonIds(new Set(ids));
+        setLessonsLoaded(true);
+      })
+      .catch(() => setLessonsLoaded(true));
+  }, [planId]);
+
   const durationChanged = (values) => {
     if (!plan) return false;
     const originalUnit  = plan.duration_unit ?? "day";
@@ -166,6 +197,12 @@ export default function EditPlan() {
     await api.post(`/admin/tiers/${planId}/courses`, {
       course_ids: [...selectedCourseIds],
     }).catch(() => {});
+    await api.post(`/admin/tiers/${planId}/units`, {
+      unit_ids: [...selectedUnitIds],
+    }).catch(() => {});
+    await api.post(`/admin/tiers/${planId}/lessons`, {
+      lesson_ids: [...selectedLessonIds],
+    }).catch(() => {});
     bypassOnce();
     navigate("/admin/tiers/plans");
   };
@@ -339,7 +376,7 @@ export default function EditPlan() {
               </SectionCard>
 
               {plan?.tier && (
-                <SectionCard title="Assigned Courses">
+                <SectionCard title="Bundles" description="Choose which courses, units, and lessons this plan unlocks.">
                   {coursesLoaded ? (
                     <CoursePicker
                       subscription={plan.tier}
@@ -358,12 +395,54 @@ export default function EditPlan() {
                       <Skeleton className="h-8 w-52" />
                     </div>
                   )}
+
+                  <div className="border-t pt-5">
+                    {unitsLoaded ? (
+                      <UnitPicker
+                        subscription={plan.tier}
+                        selectedIds={selectedUnitIds}
+                        onChange={setSelectedUnitIds}
+                        isPreloaded={true}
+                        currentPlanId={planId}
+                        onConflictsChange={setUnitConflicts}
+                      />
+                    ) : (
+                      <div className="space-y-3">
+                        <div className="flex gap-2">
+                          <Skeleton className="h-8 w-36" />
+                          <Skeleton className="h-8 w-40" />
+                        </div>
+                        <Skeleton className="h-8 w-52" />
+                      </div>
+                    )}
+                  </div>
+
+                  <div className="border-t pt-5">
+                    {lessonsLoaded ? (
+                      <LessonPicker
+                        subscription={plan.tier}
+                        selectedIds={selectedLessonIds}
+                        onChange={setSelectedLessonIds}
+                        isPreloaded={true}
+                        currentPlanId={planId}
+                        onConflictsChange={setLessonConflicts}
+                      />
+                    ) : (
+                      <div className="space-y-3">
+                        <div className="flex gap-2">
+                          <Skeleton className="h-8 w-36" />
+                          <Skeleton className="h-8 w-40" />
+                        </div>
+                        <Skeleton className="h-8 w-52" />
+                      </div>
+                    )}
+                  </div>
                 </SectionCard>
               )}
 
               <div className="flex justify-end gap-3 pt-1">
                 <Button type="button" variant="outline" onClick={() => navigate("/admin/tiers/plans")} disabled={loading || impactLoading}>Cancel</Button>
-                <Button type="submit" disabled={loading || impactLoading || courseConflicts > 0}>
+                <Button type="submit" disabled={loading || impactLoading || courseConflicts > 0 || unitConflicts > 0 || lessonConflicts > 0}>
                   {(loading || impactLoading) && <Spinner className="h-4 w-4 mr-2" />}
                   Save Changes
                 </Button>

src/modules/admin/pages/tiers/ViewPlan.jsx

@@ -2,7 +2,7 @@ import { useEffect, useState, useMemo } from "react";
 import { useNavigate, useParams } from "react-router-dom";
 import {
   ArrowLeft, CreditCard, Pencil, Tag, BadgeCheck, BookOpen, Clock,
-  ShieldCheck, Plus, Trash2, Loader2, Receipt, KeyRound, Users, Lock,
+  ShieldCheck, Plus, Trash2, Loader2, Receipt, KeyRound, Users, Lock, FileText,
 } from "lucide-react";
 import { toast } from "sonner";
 import { Badge }     from "@/components/ui/badge";
@@ -70,7 +70,7 @@ function formatCourseDuration(seconds = 0) {
 
 // ─── Tab: Plan Details ─────────────────────────────────────────────────────────
 
-function PlanDetailsTab({ plan, loading, tierMap, assignedCourses, coursesLoading }) {
+function PlanDetailsTab({ plan, loading, tierMap, assignedCourses, coursesLoading, assignedUnits, unitsLoading, assignedLessons, lessonsLoading }) {
   const { fmtDateTime } = useDateFormat();
 
   if (loading && !plan) {
@@ -159,6 +159,68 @@ function PlanDetailsTab({ plan, loading, tierMap, assignedCourses, coursesLoadin
         )}
       </SectionCard>
 
+      <SectionCard icon={BookOpen} title="Assigned Units">
+        {unitsLoading ? (
+          <div className="space-y-2">
+            {[...Array(3)].map((_, i) => <Skeleton key={i} className="h-10 w-full" />)}
+          </div>
+        ) : assignedUnits.length === 0 ? (
+          <div className="flex items-center gap-2 rounded-lg border border-dashed p-4 text-sm text-muted-foreground">
+            <BookOpen className="size-4 shrink-0" />
+            No units assigned to this plan yet.
+          </div>
+        ) : (
+          <div className="space-y-0 divide-y rounded-lg border overflow-hidden">
+            {assignedUnits.map((unit) => (
+              <div key={unit.unit_id} className="flex items-center justify-between gap-3 px-4 py-3 bg-card hover:bg-muted/30 transition-colors">
+                <div className="flex items-center gap-3 min-w-0">
+                  <div className="h-8 w-8 rounded-md bg-muted flex items-center justify-center shrink-0">
+                    <BookOpen className="size-4 text-muted-foreground" />
+                  </div>
+                  <p className="text-sm font-medium line-clamp-1">{unit.title}</p>
+                </div>
+              </div>
+            ))}
+          </div>
+        )}
+        {!unitsLoading && (
+          <p className="text-xs text-muted-foreground">
+            {assignedUnits.length} unit{assignedUnits.length !== 1 ? "s" : ""} assigned
+          </p>
+        )}
+      </SectionCard>
+
+      <SectionCard icon={FileText} title="Assigned Lessons">
+        {lessonsLoading ? (
+          <div className="space-y-2">
+            {[...Array(3)].map((_, i) => <Skeleton key={i} className="h-10 w-full" />)}
+          </div>
+        ) : assignedLessons.length === 0 ? (
+          <div className="flex items-center gap-2 rounded-lg border border-dashed p-4 text-sm text-muted-foreground">
+            <FileText className="size-4 shrink-0" />
+            No lessons assigned to this plan yet.
+          </div>
+        ) : (
+          <div className="space-y-0 divide-y rounded-lg border overflow-hidden">
+            {assignedLessons.map((lesson) => (
+              <div key={lesson.lesson_id} className="flex items-center justify-between gap-3 px-4 py-3 bg-card hover:bg-muted/30 transition-colors">
+                <div className="flex items-center gap-3 min-w-0">
+                  <div className="h-8 w-8 rounded-md bg-muted flex items-center justify-center shrink-0">
+                    <FileText className="size-4 text-muted-foreground" />
+                  </div>
+                  <p className="text-sm font-medium line-clamp-1">{lesson.title}</p>
+                </div>
+              </div>
+            ))}
+          </div>
+        )}
+        {!lessonsLoading && (
+          <p className="text-xs text-muted-foreground">
+            {assignedLessons.length} lesson{assignedLessons.length !== 1 ? "s" : ""} assigned
+          </p>
+        )}
+      </SectionCard>
+
       <SectionCard icon={BadgeCheck} title="Audit">
         <div className="grid grid-cols-2 gap-4">
           <InfoRow label="Created At">{plan.createdAt ? fmtDateTime(plan.createdAt) : "—"}</InfoRow>
@@ -750,6 +812,10 @@ export default function ViewPlan() {
 
   const [assignedCourses, setAssignedCourses] = useState([]);
   const [coursesLoading,  setCoursesLoading]  = useState(false);
+  const [assignedUnits,   setAssignedUnits]   = useState([]);
+  const [unitsLoading,    setUnitsLoading]    = useState(false);
+  const [assignedLessons, setAssignedLessons] = useState([]);
+  const [lessonsLoading,  setLessonsLoading]  = useState(false);
 
   useEffect(() => {
     fetchPlan(planId);
@@ -759,6 +825,16 @@ export default function ViewPlan() {
       .then(({ data }) => setAssignedCourses(data.data ?? []))
       .catch(() => {})
       .finally(() => setCoursesLoading(false));
+    setUnitsLoading(true);
+    api.get(`/admin/tiers/${planId}/units`)
+      .then(({ data }) => setAssignedUnits(data.data ?? []))
+      .catch(() => {})
+      .finally(() => setUnitsLoading(false));
+    setLessonsLoading(true);
+    api.get(`/admin/tiers/${planId}/lessons`)
+      .then(({ data }) => setAssignedLessons(data.data ?? []))
+      .catch(() => {})
+      .finally(() => setLessonsLoading(false));
   }, [planId]);
 
   return (
@@ -835,6 +911,10 @@ export default function ViewPlan() {
                 tierMap={tierMap}
                 assignedCourses={assignedCourses}
                 coursesLoading={coursesLoading}
+                assignedUnits={assignedUnits}
+                unitsLoading={unitsLoading}
+                assignedLessons={assignedLessons}
+                lessonsLoading={lessonsLoading}
               />
             )}
             {activeTab === "access" && (

src/modules/client/components/FilePreview.jsx

@@ -37,7 +37,7 @@ import { formatDate } from '@/utils/table.util';
 import { formatBytes } from './blocks/FileUpload';
 import api from '@/utils/api.util';
 import { saveBlob } from '@/utils/media.util';
-import FileZoomViewer from './FileZoomViewer';
+import FileZoomViewer from '@/components/generic/FileZoomViewer';
 
 // ─── Resolve preview kind from mime type ──────────────────────────────────────
 const resolveKind = (mimeType = '', fileName = '') => {
@@ -48,7 +48,7 @@ const resolveKind = (mimeType = '', fileName = '') => {
 
     const ext = (fileName.split('.').pop() ?? '').toLowerCase();
     if (['jpg', 'jpeg', 'png', 'gif', 'webp', 'svg'].includes(ext)) return 'image';
-    if (['mp4', 'mov', 'webm', 'avi'].includes(ext)) return 'video';
+    if (['mp4', 'mov', 'mkv', 'webm', 'avi'].includes(ext)) return 'video';
     if (['mp3', 'wav', 'm4a', 'ogg'].includes(ext)) return 'audio';
     if (ext === 'pdf') return 'pdf';
     return 'other';
@@ -140,7 +140,7 @@ const PreviewBody = ({ file, kind, blobUrl, loading, error, downloadUrl, onDownl
         if (error) return <ErrorState onDownload={onDownload} downloading={downloading} fileName={file.file_name} />;
         return (
             <FileZoomViewer
-                blobUrl={blobUrl}
+                src={blobUrl}
                 mimeType={file.mime_type}
                 fileName={file.file_name}
                 loading={loading}

src/modules/client/components/LessonUpsellModal.jsx

@@ -1,37 +1,63 @@
 // LessonUpsellModal — shown when a learner clicks a locked standalone Lesson.
-// Mirrors UnitUpsellModal.jsx: a Lesson isn't independently purchasable, so this
-// lists every course that would unlock it (aggregated across all its attached
-// Units, since a Lesson can sit in more than one) plus a generic "View Plans"
-// fallback. Shared by LessonsList and Dashboard.
+// Mirrors UnitUpsellModal.jsx: unlocks via the lesson's own subscription tier
+// (with an optional direct "Buy" listing) and/or any course reachable through
+// its attached Units (aggregated across all of them, since a Lesson can sit
+// in more than one) plus a generic "View Plans" fallback.
+// Shared by LessonsList and Dashboard.
 
 import { useNavigate } from "react-router-dom";
-import { LockIcon, BookOpen } from "lucide-react";
+import { LockIcon, BookOpen, ShoppingCart } from "lucide-react";
 import ResponsiveModal from "@/components/generic/ResponsiveModal";
 import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
+import { useDateFormat } from "@/hooks/useDateFormat";
 import { resolveTierBadge } from "@/utils/tierBadge.util";
 
 export default function LessonUpsellModal({ open, onOpenChange, lesson, tierMap = {} }) {
   const navigate = useNavigate();
+  const { fmtCurrency } = useDateFormat();
   const courses = lesson?.courses ?? [];
+  const ownTier = lesson?.subscription ? resolveTierBadge(lesson.subscription, tierMap) : null;
+  const canBuy = lesson?.product?.is_active && !lesson?.has_purchased;
 
   return (
     <ResponsiveModal
       open={open}
       onOpenChange={onOpenChange}
       title={lesson?.title ?? "Lesson Details"}
-      description="This lesson is part of one or more courses that require a plan upgrade."
+      description={
+        ownTier
+          ? "This lesson requires a plan upgrade or individual purchase."
+          : "This lesson is part of one or more courses that require a plan upgrade."
+      }
       footer={
         <>
           <Button variant="outline" onClick={() => onOpenChange(false)}>Close</Button>
-          <Button onClick={() => { onOpenChange(false); navigate("/plans"); }}>
+          {canBuy && (
+            <Button onClick={() => { onOpenChange(false); navigate(`/lessons/${lesson.uuid}/checkout`); }}>
+              <ShoppingCart /> Buy {fmtCurrency(lesson.product.price ?? 0, lesson.product.currency ?? "USD")}
+            </Button>
+          )}
+          <Button variant={canBuy ? "outline" : "default"} onClick={() => { onOpenChange(false); navigate("/plans"); }}>
             <LockIcon /> View Plans
           </Button>
         </>
       }
     >
       <div className="space-y-3 py-2">
-        {courses.length === 0 ? (
+        {ownTier && (
+          <div className="flex items-center justify-between gap-3 p-4 rounded-xl border bg-muted/40">
+            <div className="flex items-center gap-2.5 min-w-0">
+              <LockIcon className="size-4 text-muted-foreground shrink-0" />
+              <div className="min-w-0">
+                <p className="text-sm font-medium">Requires</p>
+                <Badge className={`${ownTier.cls} mt-1`}>{ownTier.label}</Badge>
+              </div>
+            </div>
+          </div>
+        )}
+
+        {courses.length === 0 && !ownTier ? (
           <p className="text-sm text-muted-foreground">
             Upgrade your plan to access this content.
           </p>

src/modules/client/components/LockedContentPanel.jsx

@@ -3,14 +3,24 @@
 // Distinct from UnitUpsellModal (a dialog triggered from card grids) — this
 // renders in place of the page body itself. Shared by UnitDetails and
 // LessonDetails.
+//
+// `item` (optional) is the unit/lesson's own subscription/product info, from
+// the 403 body's `item` field — lets a deep-link show the same own-tier
+// badge + direct "Buy" option the browse-list upsell modals already do,
+// instead of only ever pointing at an attached course.
 
 import { useNavigate } from "react-router-dom";
-import { LockIcon, Zap } from "lucide-react";
+import { LockIcon, Zap, ShoppingCart } from "lucide-react";
 import { Button } from "@/components/ui/button";
+import { useDateFormat } from "@/hooks/useDateFormat";
+import { resolveTierBadge } from "@/utils/tierBadge.util";
 
-export default function LockedContentPanel({ course, tierMap = {} }) {
+export default function LockedContentPanel({ course, item, tierMap = {}, checkoutPath }) {
   const navigate = useNavigate();
+  const { fmtCurrency } = useDateFormat();
   const tier = course?.subscription ? tierMap[course.subscription] : null;
+  const ownTier = item?.subscription ? resolveTierBadge(item.subscription, tierMap) : null;
+  const canBuy = item?.product?.is_active && !item?.has_purchased && checkoutPath;
 
   return (
     <div className="flex flex-col items-center gap-6 py-32 text-center px-4">
@@ -20,15 +30,24 @@ export default function LockedContentPanel({ course, tierMap = {} }) {
       <div className="space-y-2 max-w-sm">
         <h2 className="text-xl font-semibold">Premium / Exclusive Content</h2>
         <p className="text-sm text-muted-foreground leading-relaxed">
-          {course
+          {ownTier
+            ? `This content requires the ${ownTier.label} plan${canBuy ? ", or you can purchase it individually" : ""}.`
+            : course
             ? `This content is part of "${course.title}"${tier?.name ? ` (${tier.name} plan)` : ""}. Upgrade your plan or view the course to unlock it.`
             : "Upgrade your plan to access this content."}
         </p>
       </div>
       <div className="flex flex-col items-center gap-2">
+        <div className="flex items-center gap-2">
+          {canBuy && (
+            <Button variant="outline" onClick={() => navigate(checkoutPath)} className="gap-1.5">
+              <ShoppingCart className="size-4" /> Buy {fmtCurrency(item.product.price ?? 0, item.product.currency ?? "USD")}
+            </Button>
+          )}
           <Button onClick={() => navigate('/plans')} className="gap-1.5">
             <Zap className="size-4" /> View Available Plans
           </Button>
+        </div>
         <p className="text-xs text-muted-foreground">Already subscribed? Your plan may not cover this tier.</p>
       </div>
     </div>

src/modules/client/components/UnitUpsellModal.jsx

@@ -1,37 +1,63 @@
 // UnitUpsellModal — shown when a learner clicks a locked standalone Unit.
-// Units aren't independently purchasable (no Product row keyed to unit_id, only
-// to course_id), so unlike CourseCard's single "Buy $X" button, this lists every
-// course the unit is attached to so the learner can pick one to view/buy, plus a
-// generic "View Plans" fallback. Shared by UnitsList, UnitDetails, and Dashboard.
+// Unlocks two ways: the unit's own subscription tier (with an optional direct
+// "Buy" listing, same PayPal flow as Courses) and/or any course it's attached
+// to (a unit may sit under several courses at different tiers — no single
+// "Buy" in that case, just links to view/buy the course itself).
+// Shared by UnitsList, UnitDetails, and Dashboard.
 
 import { useNavigate } from "react-router-dom";
-import { LockIcon, BookOpen } from "lucide-react";
+import { LockIcon, BookOpen, ShoppingCart } from "lucide-react";
 import ResponsiveModal from "@/components/generic/ResponsiveModal";
 import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
+import { useDateFormat } from "@/hooks/useDateFormat";
 import { resolveTierBadge } from "@/utils/tierBadge.util";
 
 export default function UnitUpsellModal({ open, onOpenChange, unit, tierMap = {} }) {
   const navigate = useNavigate();
+  const { fmtCurrency } = useDateFormat();
   const courses = unit?.courses ?? [];
+  const ownTier = unit?.subscription ? resolveTierBadge(unit.subscription, tierMap) : null;
+  const canBuy = unit?.product?.is_active && !unit?.has_purchased;
 
   return (
     <ResponsiveModal
       open={open}
       onOpenChange={onOpenChange}
       title={unit?.title ?? "Unit Details"}
-      description="This unit is part of one or more courses that require a plan upgrade."
+      description={
+        ownTier
+          ? "This unit requires a plan upgrade or individual purchase."
+          : "This unit is part of one or more courses that require a plan upgrade."
+      }
       footer={
         <>
           <Button variant="outline" onClick={() => onOpenChange(false)}>Close</Button>
-          <Button onClick={() => { onOpenChange(false); navigate("/plans"); }}>
+          {canBuy && (
+            <Button onClick={() => { onOpenChange(false); navigate(`/units/${unit.uuid}/checkout`); }}>
+              <ShoppingCart /> Buy {fmtCurrency(unit.product.price ?? 0, unit.product.currency ?? "USD")}
+            </Button>
+          )}
+          <Button variant={canBuy ? "outline" : "default"} onClick={() => { onOpenChange(false); navigate("/plans"); }}>
             <LockIcon /> View Plans
           </Button>
         </>
       }
     >
       <div className="space-y-3 py-2">
-        {courses.length === 0 ? (
+        {ownTier && (
+          <div className="flex items-center justify-between gap-3 p-4 rounded-xl border bg-muted/40">
+            <div className="flex items-center gap-2.5 min-w-0">
+              <LockIcon className="size-4 text-muted-foreground shrink-0" />
+              <div className="min-w-0">
+                <p className="text-sm font-medium">Requires</p>
+                <Badge className={`${ownTier.cls} mt-1`}>{ownTier.label}</Badge>
+              </div>
+            </div>
+          </div>
+        )}
+
+        {courses.length === 0 && !ownTier ? (
           <p className="text-sm text-muted-foreground">
             Upgrade your plan to access this content.
           </p>

src/modules/client/pages/Checkout.jsx

@@ -405,11 +405,11 @@ const Checkout = () => {
                   <span>{fmtCurrency(total, effectiveCurrency)}</span>
                 </div>
 
-                {isCurrent ? (
-                  <Button size="lg" className="w-full" variant="outline" disabled>
-                    <Check className="size-4" /> Current Plan
-                  </Button>
-                ) : (
+                {isCurrent && (
+                  <p className="text-xs text-muted-foreground rounded-md border bg-muted/50 px-3 py-2">
+                    You already have an active {plan.tier} plan — this purchase will extend it by {duration}, instead of starting a new one.
+                  </p>
+                )}
                 <Button
                   size="lg"
                   className="w-full"
@@ -420,9 +420,10 @@ const Checkout = () => {
                     ? <Loader2 className="size-4 animate-spin" />
                     : <ShieldCheck className="size-4" />
                   }
-                    Pay {fmtCurrency(total, effectiveCurrency)} with PayPal
+                  {isCurrent
+                    ? `Extend for ${fmtCurrency(total, effectiveCurrency)} with PayPal`
+                    : `Pay ${fmtCurrency(total, effectiveCurrency)} with PayPal`}
                 </Button>
-                )}
                 <div className="text-center text-sm text-muted-foreground space-y-1">
                   <p className="inline-flex items-center justify-center gap-1">
                     <ShieldCheck className="size-4" />

src/modules/client/pages/LessonCheckout.jsx

@@ -0,0 +1,181 @@
+import { useNavigate, useParams } from "react-router-dom";
+import { ArrowLeft, FileText, CalendarDays, House, Loader2, ShieldCheck } from "lucide-react";
+import AppBreadcrumb from "@/components/generic/Breadcrumb/AppBreadcrumb";
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
+import { Separator } from "@/components/ui/separator";
+import { Skeleton } from "@/components/ui/skeleton";
+import { useLibrary } from "@/contexts/ClientLibraryContext";
+import { useDateFormat } from "@/hooks/useDateFormat";
+import { usePurchaseCheckout } from "@/hooks/usePurchaseCheckout";
+
+function formatAccess(days) {
+  if (!days) return "Lifetime access";
+  if (days % 365 === 0) return `${days / 365} year${days / 365 > 1 ? "s" : ""} access`;
+  if (days % 30 === 0) return `${days / 30} month${days / 30 > 1 ? "s" : ""} access`;
+  return `${days} day access`;
+}
+
+const PageSkeleton = () => (
+  <div className="min-h-screen bg-muted pt-24">
+    <div className="max-w-4xl mx-auto px-6 pb-6 space-y-4">
+      <Skeleton className="h-5 w-48" />
+      <div className="grid grid-cols-1 lg:grid-cols-12 gap-6">
+        <div className="lg:col-span-8"><Skeleton className="h-64 w-full rounded-xl" /></div>
+        <div className="lg:col-span-4"><Skeleton className="h-48 w-full rounded-xl" /></div>
+      </div>
+    </div>
+  </div>
+);
+
+export default function LessonCheckout() {
+  const navigate = useNavigate();
+  const { uuid } = useParams();
+  const { fmtCurrency } = useDateFormat();
+  const { checkoutInfo: lesson, checkoutInfoLoading: lessonLoading, getLessonCheckoutInfo } = useLibrary();
+
+  const { capturing, purchaseLoading, buyNow } = usePurchaseCheckout({
+    targetId: uuid,
+    loadTarget: getLessonCheckoutInfo,
+    checkoutPath: `/lessons/${uuid}/checkout`,
+  });
+
+  if (capturing) {
+    return (
+      <div className="min-h-screen bg-muted flex items-center justify-center">
+        <div className="flex flex-col items-center gap-4">
+          <Loader2 className="size-10 animate-spin text-primary" />
+          <p className="text-sm text-muted-foreground">Confirming your payment…</p>
+        </div>
+      </div>
+    );
+  }
+
+  if (lessonLoading) return <PageSkeleton />;
+
+  const product = lesson?.product ?? null;
+
+  if (!product) {
+    return (
+      <div className="min-h-screen bg-muted pt-24">
+        <div className="max-w-3xl mx-auto px-6 pb-6 space-y-4">
+          <Card>
+            <CardContent className="py-10 text-center space-y-4">
+              <FileText className="size-10 mx-auto text-muted-foreground/50" />
+              <div>
+                <h1 className="text-xl font-semibold">Not available for purchase</h1>
+                <p className="text-sm text-muted-foreground mt-1">
+                  This lesson doesn't have an individual purchase option.
+                </p>
+              </div>
+              <Button onClick={() => navigate(`/lessons/${uuid}`)}>
+                <ArrowLeft className="size-4" /> Go Back
+              </Button>
+            </CardContent>
+          </Card>
+        </div>
+      </div>
+    );
+  }
+
+  const breadcrumbItems = [
+    { label: "Home",    icon: <House className="size-4" />, to: "/dashboard" },
+    { label: "Lessons", to: "/lessons" },
+    { label: lesson?.title ?? "Lesson", to: `/lessons/${uuid}` },
+    { label: "Checkout" },
+  ];
+
+  return (
+    <div className="min-h-screen bg-muted pt-24">
+      <div className="max-w-5xl mx-auto px-6 pb-10">
+        <div className="grid grid-cols-1 lg:grid-cols-12 gap-6">
+
+          {/* ── Left ── */}
+          <div className="lg:col-span-8 space-y-6">
+            <AppBreadcrumb items={breadcrumbItems} />
+
+            <Card>
+              <CardHeader>
+                <CardTitle>Lesson Details</CardTitle>
+                <CardDescription>Review what you're about to purchase.</CardDescription>
+              </CardHeader>
+              <CardContent className="space-y-4">
+                <div className="flex items-start gap-4">
+                  <div className="w-16 h-16 rounded-lg bg-secondary flex items-center justify-center shrink-0">
+                    <FileText className="size-8 text-secondary-foreground" />
+                  </div>
+                  <div className="flex-1 min-w-0 space-y-1">
+                    <h2 className="text-lg font-semibold leading-snug">{lesson?.title}</h2>
+                    {lesson?.description && (
+                      <p className="text-sm text-muted-foreground line-clamp-2">{lesson.description}</p>
+                    )}
+                  </div>
+                </div>
+
+                <Separator />
+
+                <div className="space-y-2 text-sm">
+                  <div className="flex items-center gap-2 text-muted-foreground">
+                    <CalendarDays className="size-4 shrink-0" />
+                    <span>{formatAccess(product.access_days)}</span>
+                  </div>
+                </div>
+              </CardContent>
+            </Card>
+          </div>
+
+          {/* ── Right / Summary ── */}
+          <div className="lg:col-span-4">
+            <Card className="lg:sticky lg:top-24">
+              <CardHeader>
+                <CardTitle>Price Summary</CardTitle>
+                <CardDescription>Payment processed through PayPal.</CardDescription>
+              </CardHeader>
+              <CardContent className="space-y-4">
+                <div className="flex justify-between items-center">
+                  <span className="text-muted-foreground">Lesson Price</span>
+                  <span className="font-medium">{fmtCurrency(product.price, product.currency)}</span>
+                </div>
+
+                <Separator />
+
+                <div className="flex justify-between items-center text-lg font-semibold">
+                  <span>Total</span>
+                  <span>{fmtCurrency(product.price, product.currency)}</span>
+                </div>
+
+                {lesson?.has_purchased ? (
+                  <Button size="lg" className="w-full" variant="outline" disabled>
+                    Already Purchased
+                  </Button>
+                ) : (
+                  <Button
+                    size="lg"
+                    className="w-full"
+                    onClick={() => buyNow(product.id)}
+                    disabled={purchaseLoading}
+                  >
+                    {purchaseLoading
+                      ? <Loader2 className="size-4 animate-spin" />
+                      : <ShieldCheck className="size-4" />
+                    }
+                    Pay {fmtCurrency(product.price, product.currency)} with PayPal
+                  </Button>
+                )}
+
+                <div className="text-center text-xs text-muted-foreground space-y-1">
+                  <p className="inline-flex items-center justify-center gap-1">
+                    <ShieldCheck className="size-3.5" />
+                    Secure payment powered by PayPal
+                  </p>
+                  <p>Access starts after successful payment capture.</p>
+                </div>
+              </CardContent>
+            </Card>
+          </div>
+
+        </div>
+      </div>
+    </div>
+  );
+}

src/modules/client/pages/LessonDetails.jsx

@@ -139,7 +139,14 @@ const LessonDetails = () => {
 
     // ── Deep-link to a lesson under a locked unit — inline blocked panel ────
     if (unitBlocked) {
-        return <LockedContentPanel course={unitBlockedInfo?.course} tierMap={tierMap} />;
+        return (
+            <LockedContentPanel
+                course={unitBlockedInfo?.course}
+                item={unitBlockedInfo?.item}
+                tierMap={tierMap}
+                checkoutPath={unitBlockedInfo?.item?.uuid ? `/lessons/${unitBlockedInfo.item.uuid}/checkout` : null}
+            />
+        );
     }
 
     if (lessonLoading || !lesson) {

src/modules/client/pages/PlanList.jsx

@@ -216,6 +216,17 @@ const PlanCard = ({ plan, myTier, tierMap, onSelect, onView, onRefund, refundSec
                         >
                             {plan.tier === "free" ? "Current" : `Get ${tierLabel}`}
                         </Button>
+                    ) : plan.tier !== "free" ? (
+                        // Already holds this tier (from another plan, past the refund
+                        // window) — repurchasing extends the existing grant's expiry
+                        // rather than being blocked, so still offer a way to buy.
+                        <Button
+                            className="flex-1"
+                            variant="outline"
+                            onClick={() => onSelect(plan)}
+                        >
+                            Extend {tierLabel}
+                        </Button>
                     ) : null}
                 </CardFooter>
             </Card>

src/modules/client/pages/UnitCheckout.jsx

@@ -0,0 +1,181 @@
+import { useNavigate, useParams } from "react-router-dom";
+import { ArrowLeft, BookCheck, CalendarDays, House, Loader2, ShieldCheck } from "lucide-react";
+import AppBreadcrumb from "@/components/generic/Breadcrumb/AppBreadcrumb";
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
+import { Separator } from "@/components/ui/separator";
+import { Skeleton } from "@/components/ui/skeleton";
+import { useLibrary } from "@/contexts/ClientLibraryContext";
+import { useDateFormat } from "@/hooks/useDateFormat";
+import { usePurchaseCheckout } from "@/hooks/usePurchaseCheckout";
+
+function formatAccess(days) {
+  if (!days) return "Lifetime access";
+  if (days % 365 === 0) return `${days / 365} year${days / 365 > 1 ? "s" : ""} access`;
+  if (days % 30 === 0) return `${days / 30} month${days / 30 > 1 ? "s" : ""} access`;
+  return `${days} day access`;
+}
+
+const PageSkeleton = () => (
+  <div className="min-h-screen bg-muted pt-24">
+    <div className="max-w-4xl mx-auto px-6 pb-6 space-y-4">
+      <Skeleton className="h-5 w-48" />
+      <div className="grid grid-cols-1 lg:grid-cols-12 gap-6">
+        <div className="lg:col-span-8"><Skeleton className="h-64 w-full rounded-xl" /></div>
+        <div className="lg:col-span-4"><Skeleton className="h-48 w-full rounded-xl" /></div>
+      </div>
+    </div>
+  </div>
+);
+
+export default function UnitCheckout() {
+  const navigate = useNavigate();
+  const { uuid } = useParams();
+  const { fmtCurrency } = useDateFormat();
+  const { checkoutInfo: unit, checkoutInfoLoading: unitLoading, getUnitCheckoutInfo } = useLibrary();
+
+  const { capturing, purchaseLoading, buyNow } = usePurchaseCheckout({
+    targetId: uuid,
+    loadTarget: getUnitCheckoutInfo,
+    checkoutPath: `/units/${uuid}/checkout`,
+  });
+
+  if (capturing) {
+    return (
+      <div className="min-h-screen bg-muted flex items-center justify-center">
+        <div className="flex flex-col items-center gap-4">
+          <Loader2 className="size-10 animate-spin text-primary" />
+          <p className="text-sm text-muted-foreground">Confirming your payment…</p>
+        </div>
+      </div>
+    );
+  }
+
+  if (unitLoading) return <PageSkeleton />;
+
+  const product = unit?.product ?? null;
+
+  if (!product) {
+    return (
+      <div className="min-h-screen bg-muted pt-24">
+        <div className="max-w-3xl mx-auto px-6 pb-6 space-y-4">
+          <Card>
+            <CardContent className="py-10 text-center space-y-4">
+              <BookCheck className="size-10 mx-auto text-muted-foreground/50" />
+              <div>
+                <h1 className="text-xl font-semibold">Not available for purchase</h1>
+                <p className="text-sm text-muted-foreground mt-1">
+                  This unit doesn't have an individual purchase option.
+                </p>
+              </div>
+              <Button onClick={() => navigate(`/units/${uuid}`)}>
+                <ArrowLeft className="size-4" /> Go Back
+              </Button>
+            </CardContent>
+          </Card>
+        </div>
+      </div>
+    );
+  }
+
+  const breadcrumbItems = [
+    { label: "Home",  icon: <House className="size-4" />, to: "/dashboard" },
+    { label: "Units", to: "/units" },
+    { label: unit?.title ?? "Unit", to: `/units/${uuid}` },
+    { label: "Checkout" },
+  ];
+
+  return (
+    <div className="min-h-screen bg-muted pt-24">
+      <div className="max-w-5xl mx-auto px-6 pb-10">
+        <div className="grid grid-cols-1 lg:grid-cols-12 gap-6">
+
+          {/* ── Left ── */}
+          <div className="lg:col-span-8 space-y-6">
+            <AppBreadcrumb items={breadcrumbItems} />
+
+            <Card>
+              <CardHeader>
+                <CardTitle>Unit Details</CardTitle>
+                <CardDescription>Review what you're about to purchase.</CardDescription>
+              </CardHeader>
+              <CardContent className="space-y-4">
+                <div className="flex items-start gap-4">
+                  <div className="w-16 h-16 rounded-lg bg-secondary flex items-center justify-center shrink-0">
+                    <BookCheck className="size-8 text-secondary-foreground" />
+                  </div>
+                  <div className="flex-1 min-w-0 space-y-1">
+                    <h2 className="text-lg font-semibold leading-snug">{unit?.title}</h2>
+                    {unit?.description && (
+                      <p className="text-sm text-muted-foreground line-clamp-2">{unit.description}</p>
+                    )}
+                  </div>
+                </div>
+
+                <Separator />
+
+                <div className="space-y-2 text-sm">
+                  <div className="flex items-center gap-2 text-muted-foreground">
+                    <CalendarDays className="size-4 shrink-0" />
+                    <span>{formatAccess(product.access_days)}</span>
+                  </div>
+                </div>
+              </CardContent>
+            </Card>
+          </div>
+
+          {/* ── Right / Summary ── */}
+          <div className="lg:col-span-4">
+            <Card className="lg:sticky lg:top-24">
+              <CardHeader>
+                <CardTitle>Price Summary</CardTitle>
+                <CardDescription>Payment processed through PayPal.</CardDescription>
+              </CardHeader>
+              <CardContent className="space-y-4">
+                <div className="flex justify-between items-center">
+                  <span className="text-muted-foreground">Unit Price</span>
+                  <span className="font-medium">{fmtCurrency(product.price, product.currency)}</span>
+                </div>
+
+                <Separator />
+
+                <div className="flex justify-between items-center text-lg font-semibold">
+                  <span>Total</span>
+                  <span>{fmtCurrency(product.price, product.currency)}</span>
+                </div>
+
+                {unit?.has_purchased ? (
+                  <Button size="lg" className="w-full" variant="outline" disabled>
+                    Already Purchased
+                  </Button>
+                ) : (
+                  <Button
+                    size="lg"
+                    className="w-full"
+                    onClick={() => buyNow(product.id)}
+                    disabled={purchaseLoading}
+                  >
+                    {purchaseLoading
+                      ? <Loader2 className="size-4 animate-spin" />
+                      : <ShieldCheck className="size-4" />
+                    }
+                    Pay {fmtCurrency(product.price, product.currency)} with PayPal
+                  </Button>
+                )}
+
+                <div className="text-center text-xs text-muted-foreground space-y-1">
+                  <p className="inline-flex items-center justify-center gap-1">
+                    <ShieldCheck className="size-3.5" />
+                    Secure payment powered by PayPal
+                  </p>
+                  <p>Access starts after successful payment capture.</p>
+                </div>
+              </CardContent>
+            </Card>
+          </div>
+
+        </div>
+      </div>
+    </div>
+  );
+}

src/modules/client/pages/UnitDetails.jsx

@@ -140,7 +140,14 @@ const UnitDetails = () => {
 
     // ── Deep-link to a locked unit — inline blocked panel, not a redirect ────
     if (unitBlocked) {
-        return <LockedContentPanel course={unitBlockedInfo?.course} tierMap={tierMap} />;
+        return (
+            <LockedContentPanel
+                course={unitBlockedInfo?.course}
+                item={unitBlockedInfo?.item}
+                tierMap={tierMap}
+                checkoutPath={unitBlockedInfo?.item?.uuid ? `/units/${unitBlockedInfo.item.uuid}/checkout` : null}
+            />
+        );
     }
 
     if (unitDetailLoading) {

src/modules/client/routes/ClientRoutes.jsx

@@ -21,6 +21,8 @@ import PlanList from '../pages/PlanList'
 import ViewPlan from '../pages/ViewPlan'
 import ViewTask from '../pages/ViewTask'
 import CourseCheckout from '../pages/CourseCheckout'
+import UnitCheckout from '../pages/UnitCheckout'
+import LessonCheckout from '../pages/LessonCheckout'
 import MyCertificates from '../pages/MyCertificates'
 import MyAchievements from '../pages/MyAchievements'
 import MyCompletedContent from '../pages/MyCompletedContent'
@@ -106,6 +108,7 @@ export const ClientRoutes = {
               children: [
                 { index: true, element: <UnitDetails /> },
                 { path: 'read', element: <UnitReader />, handle: { showFooter: false } },
+                { path: 'checkout', element: <UnitCheckout /> },
               ],
             },
           ],
@@ -116,7 +119,13 @@ export const ClientRoutes = {
           element: <Outlet />,
           children: [
             { index: true, element: <LessonsList /> },
-            { path: ':uuid', element: <LessonDetails /> },
+            {
+              path: ':uuid', element: <Outlet />,
+              children: [
+                { index: true, element: <LessonDetails /> },
+                { path: 'checkout', element: <LessonCheckout /> },
+              ],
+            },
           ],
         },
 

src/utils/assetUpload.util.js

@@ -29,26 +29,31 @@ const ALLOWED_DOCUMENT_EXTENSIONS = new Set([
 ]);
 
 // Uploads go straight to storage via a presigned URL (see
-// presignedUpload.util.js) — this backend never buffers the file. Above 5GB
-// (S3-compatible storage's own single-PUT ceiling) uploads switch to real
-// multipart automatically; 15GB is the app-level ceiling chosen for future
-// assets, well within multipart's own much larger real limit. Rejecting an
-// oversized file here still means the queue shows a clear "invalid" reason
-// instantly instead of a job that uploads for a while and then fails.
-export const MAX_ASSET_FILE_SIZE = 15 * 1024 * 1024 * 1024; // 15 GB
-export const MAX_ASSET_FILE_SIZE_LABEL = "15 GB";
+// presignedUpload.util.js) — this backend never buffers the file, so these
+// ceilings are app-level policy rather than a technical constraint (S3's own
+// single-PUT ceiling is a separate, higher 5GB — see s3.service.js). Add
+// Asset (single) and Add Assets Bulk enforce different caps, so each flow
+// gets its own constant. Rejecting an oversized file here still means the
+// queue shows a clear "invalid" reason instantly instead of a job that
+// uploads for a while and then fails.
+export const MAX_ASSET_FILE_SIZE_SINGLE = 3 * 1024 * 1024 * 1024; // 3 GB
+export const MAX_ASSET_FILE_SIZE_SINGLE_LABEL = "3 GB";
+export const MAX_ASSET_FILE_SIZE_BULK = 5 * 1024 * 1024 * 1024; // 5 GB
+export const MAX_ASSET_FILE_SIZE_BULK_LABEL = "5 GB";
 
 export function fileExtension(filename = "") {
     const dot = filename.lastIndexOf(".");
     return dot > 0 ? filename.slice(dot + 1).toLowerCase() : "";
 }
 
-// { ok: true } or { ok: false, reason }
-export function validateAssetFile(file) {
-    if (file.size > MAX_ASSET_FILE_SIZE) {
+// { ok: true } or { ok: false, reason }. Defaults to the Bulk ceiling since
+// that's this function's only caller (UploadQueueContext); Add Asset (single)
+// checks its own, lower ceiling inline.
+export function validateAssetFile(file, maxSize = MAX_ASSET_FILE_SIZE_BULK, maxSizeLabel = MAX_ASSET_FILE_SIZE_BULK_LABEL) {
+    if (file.size > maxSize) {
         return {
             ok: false,
-            reason: `File exceeds the ${MAX_ASSET_FILE_SIZE_LABEL} size limit.`,
+            reason: `File exceeds the ${maxSizeLabel} size limit.`,
         };
     }
 

src/utils/format.util.js

@@ -0,0 +1,28 @@
+// utils/format.util.js
+//
+// Shared byte-size and player-time formatters. Both were previously
+// duplicated ad hoc across the admin asset pages / media block players, each
+// copy independently under-scoped: file-size helpers that topped out at "MB"
+// with no GB tier (a 1.4GB asset read as "1457.88 MB"), and a time formatter
+// that never rolled minutes over into hours (a 76-minute video read as
+// "76:57" instead of "1:16:57"). One source of truth from here on.
+
+export function formatFileSize(bytes) {
+    if (bytes == null) return null;
+    if (bytes < 1024) return `${bytes} B`;
+    if (bytes < 1024 ** 2) return `${(bytes / 1024).toFixed(1)} KB`;
+    if (bytes < 1024 ** 3) return `${(bytes / 1024 ** 2).toFixed(1)} MB`;
+    return `${(bytes / 1024 ** 3).toFixed(2)} GB`;
+}
+
+// m:ss under an hour, h:mm:ss at/above an hour — matches standard player
+// conventions (YouTube, etc).
+export function formatPlayerTime(seconds) {
+    if (!seconds || isNaN(seconds)) return "0:00";
+    const total = Math.floor(seconds);
+    const h = Math.floor(total / 3600);
+    const m = Math.floor((total % 3600) / 60);
+    const s = total % 60;
+    if (h > 0) return `${h}:${String(m).padStart(2, "0")}:${String(s).padStart(2, "0")}`;
+    return `${m}:${String(s).padStart(2, "0")}`;
+}