Restructure into a monorepo: models, VS Code extension, daemon, shared

- models/: GGUFs (Git LFS), manifest.json, model card, Apache-2.0 LICENSE + NOTICE
- extensions/vscode/: the Local Autocomplete extension (v0.5.0, publisher harvmaster)
- daemon/: acd completion daemon (bundled into the extension; also runs standalone)
- shared/: prompt layout + symbol extraction shared with the training pipeline
- scripts/: make-model-release.mjs, publish-extension-release.mjs (Gitea releases)
- README with quick start, settings, architecture, build and release instructions;
  MIT license for code; CHANGELOG

The default model manifest URL moves to models/manifest.json.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

daemon/acd.service

@@ -0,0 +1,18 @@
+# systemd user service for acd (only needed in external mode; the VS Code extension's
+# managed mode runs the daemon itself). Edit the two paths below, then:
+#   mkdir -p ~/.config/systemd/user && cp acd.service ~/.config/systemd/user/
+#   systemctl --user daemon-reload && systemctl --user enable --now acd
+#   journalctl --user -u acd -f          # logs
+# To keep it running when you're not logged in: loginctl enable-linger $USER
+[Unit]
+Description=acd local completion daemon
+
+[Service]
+WorkingDirectory=%h/Projects/AutoComplete/local-autocomplete/daemon
+# nvm-installed node isn't on PATH for services, so use the absolute path.
+ExecStart=%h/.nvm/versions/node/v22.22.0/bin/node src/main.ts --config acd.config.json
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=default.target