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>

models/README.md

@@ -0,0 +1,42 @@
+# Models
+
+Q8_0 GGUF fill-in-the-middle models for the [Local Autocomplete](../extensions/vscode) extension, fine-tuned from
+[Qwen2.5-Coder-0.5B](https://huggingface.co/Qwen/Qwen2.5-Coder-0.5B) for **TypeScript, Vue and Node.js**.
+
+| model | description | prompt order | context modes | size |
+|---|---|---|---|---|
+| `stage-c` | Suffix-first FIM with repo/symbol-context headers (default) | spm | symbols, simple | 531 MB |
+| `stage-b` | Suffix-first FIM without context headers (previous stage) | spm | raw | 531 MB |
+
+The extension reads [`manifest.json`](manifest.json), downloads the selected model once, verifies its SHA-256 and
+runs it locally with llama.cpp. The files are stored with Git LFS; download links use Gitea's `/media/` route:
+
+    https://git.harvmaster.com/Harvmaster/autocomplete-model/media/branch/main/models/<file>
+
+## Evaluation (612 held-out samples from private repos the model never saw, suffix-first prompts)
+
+| | exact match | edit similarity | still parses |
+|---|---:|---:|---:|
+| Qwen2.5-Coder-0.5B (base) | 0.270 | 0.506 | 0.783 |
+| Qwen2.5-Coder-1.5B (base) | 0.366 | 0.623 | 0.882 |
+| `stage-b` | 0.391 | 0.689 | 0.952 |
+| `stage-c` (with symbol context) | 0.397 | 0.681 | 0.954 |
+
+The base models were evaluated in their native prefix-first order (they can't do suffix-first). Suffix-first prompts
+let the editor reuse the KV cache while typing: about 2 tokens re-processed per keystroke, ~90–100 ms end-to-end on a
+laptop CPU.
+
+## Using the files directly
+
+Any llama.cpp-based runtime works, but the prompt must match the training layout. The
+[daemon](../daemon) and [`shared/prompt.ts`](../shared/prompt.ts) are the reference.
+Suffix-first (`spm`) order:
+
+    <|fim_prefix|><|fim_suffix|>{suffix}<|fim_middle|>{prefix}   → model generates the middle, then <|endoftext|>
+
+`stage-c` additionally expects a repo-level header: `<|repo_name|>{repo}\n<|file_sep|>{path}\n`, optionally with a
+`__symbols__.d.ts` pseudo-file of available symbols before it.
+
+## License
+
+Apache-2.0 ([LICENSE](LICENSE), [NOTICE](NOTICE)), as a derivative of Qwen2.5-Coder.