Freezmo: self-hosted notes-to-activities study app

Next.js 15 app that turns photos, PDFs, DOCX/PPTX and text into a swipeable
feed of AI-generated activities (flashcards, multiple choice, true/false,
fill-in-the-blank, matching, ordering, short answer) using the user's own
Ollama models.

Highlights:
- All AI calls run in server route handlers; the browser never talks to Ollama.
- Bring-your-own-key mode (default): the key lives only in the browser and is
  sent per-request; server, local-daemon and shared-key modes also supported.
- Client-side document extraction (pdf.js, mammoth, jszip) with scanned-PDF
  page rendering for the vision model; notes stay in their original language.
- ChatGPT-style shell: collapsible sidebar / mobile drawer, neutral token-based
  light + dark themes, folder organisation, PWA (manifest, SW, offline page).
- Strict JSON validation with zod + auto-repair, rate limiting, and request
  guards (cross-origin, body-size, API-key sanitising).
- setup.sh bootstraps deps, .env.local and a production build.

Gitignore excludes .env*, the generated pdf.js worker and local scratch files.

app/manifest.ts

@@ -0,0 +1,30 @@
+import type { MetadataRoute } from "next";
+
+/**
+ * Web app manifest — what makes Freezmo installable on iOS/Android
+ * (iOS reads the apple-* meta tags in app/layout.tsx as well).
+ */
+export default function manifest(): MetadataRoute.Manifest {
+  return {
+    name: "Freezmo — notes to study feed",
+    short_name: "Freezmo",
+    description:
+      "Turn photos and documents of your notes into a swipeable feed of short interactive study activities, powered by your own Ollama models.",
+    start_url: "/",
+    scope: "/",
+    display: "standalone",
+    orientation: "portrait",
+    background_color: "#f8fafc",
+    theme_color: "#f8fafc",
+    categories: ["education", "productivity"],
+    icons: [
+      { src: "/icons/icon-192.png", sizes: "192x192", type: "image/png", purpose: "any" },
+      { src: "/icons/icon-512.png", sizes: "512x512", type: "image/png", purpose: "any" },
+      { src: "/icons/maskable-512.png", sizes: "512x512", type: "image/png", purpose: "maskable" },
+    ],
+    shortcuts: [
+      { name: "New deck", short_name: "New", url: "/create" },
+      { name: "Library", short_name: "Library", url: "/" },
+    ],
+  };
+}