chore: relocate backend into apps/api ahead of monorepo merge

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/api/templates/certificate.typ

@@ -0,0 +1,65 @@
+// ─── Inputs ────────────────────────────────────────────────────────────────────
+#let recipient   = sys.inputs.at("name",         default: "First Name, Last Name")
+#let course      = sys.inputs.at("course",       default: "Course Title")
+#let date_str    = sys.inputs.at("date",         default: "MM/DD/YY")
+#let length_str  = sys.inputs.at("length",       default: "2 hours")
+#let cert_no     = sys.inputs.at("cert_no",      default: "000000-000000-00000")
+#let ref_no      = sys.inputs.at("ref_no",       default: "000X")
+#let instructors = sys.inputs.at("instructors",  default: "")
+
+// ─── Page ──────────────────────────────────────────────────────────────────────
+#set page(
+  paper:   "a4",
+  flipped: true,
+  margin:  (left: 38pt, right: 38pt, top: 28pt, bottom: 38pt),
+)
+
+#set text(font: "Arimo", size: 11pt, fill: black)
+#set par(justify: false, leading: 1.2em)
+
+// ─── Header: logo (left) + certificate numbers (right) ────────────────────────
+#grid(
+  columns: (1fr, auto),
+  align:   (left + top, right + top),
+  image("philpro-logo.png", width: 180pt),
+  [
+    #set text(size: 13pt)
+    Certificate No: #cert_no \
+    Reference Number: #ref_no
+  ],
+)
+
+#v(18pt)
+
+// ─── CERTIFICATE OF COMPLETION label ──────────────────────────────────────────
+#text(size: 12pt, fill: rgb("#555555"))[CERTIFICATE OF COMPLETION]
+
+#v(5pt)
+
+// ─── Course title ─────────────────────────────────────────────────────────────
+#block[
+  #set par(leading: 0.65em)
+  #text(size: 25pt, weight: "bold")[#course]
+]
+
+#v(12pt)
+
+// ─── Instructors (only when provided) ────────────────────────────────────────
+#if instructors != "" [
+  #text(size: 13pt, fill: rgb("#555555"))[Instructors]
+  #linebreak()
+  #text(size: 15pt, weight: "bold")[#instructors]
+]
+
+#v(1fr)
+
+// ─── Bottom: recipient, date, duration, issuer ────────────────────────────────
+#text(size: 15pt, weight: "bold")[#recipient]
+#linebreak()
+#text(size: 12pt)[*Date Issued:* #date_str]
+#linebreak()
+#if length_str != "" and length_str != "0 mins" [
+  #text(size: 12pt)[*Duration:* #length_str]
+  #linebreak()
+]
+#text(size: 12pt)[*Issued by:* Philproperties]