Terminal-themed markdown diary

Single-user diary served as one Rust binary with the Svelte frontend
embedded.

- axum 0.8 + SQLite (sqlx), migrations run at startup
- stateless HMAC session cookie; credentials from .env, compared in
  constant time
- FTS5 full-text search, user input rewritten into quoted prefix terms
- media uploads linked to entries by scanning bodies for /api/media/<id>,
  which scopes share-token media access and entry deletion
- unguessable share links (192-bit token) serving a public read-only page
- vim keybindings via CodeMirror plus a modal browse layer and : command
  line; disabled on touch devices

.gitignore

@@ -0,0 +1,12 @@
+# rust
+/target
+
+# runtime state: sqlite db + uploaded media
+/data
+
+# frontend
+/web/dist
+/web/node_modules
+
+# secrets
+.env