Document the contributor onboarding path: - CONTRIBUTING.md: setup, npm scripts, coding conventions, PR process, the block-claude-coauthor enforcement, and the five providers without test coverage today (claude, gemini, goose, qwen, antigravity). - docs/architecture.md: 12-command CLI surface, parser pipeline, three cache layers, 14 optimize detectors, and the mac / gnome / build layouts with cited line numbers. - docs/providers/: one file per provider (17 providers plus the shared vscode-cline-parser helper). Each covers data path, storage format, caching, dedup key, quirks, and a "when fixing a bug here" checklist. Also fix two pre-existing documentation issues surfaced while writing the new docs: - RELEASING.md claimed GitHub Actions auto-publishes the CLI when a v* tag is pushed. There is no such workflow; CLI publishing is manual via npm publish. Updated the CLI section to reflect reality and kept the menubar (mac-v* tag) automation accurate. - .gitignore had CLAUDE.md unanchored, which on case-insensitive filesystems also matched docs/providers/claude.md. Anchored to /CLAUDE.md so the root-level memory file stays ignored without affecting subdirectory docs. All cited file paths, line numbers, function names, and test counts were verified against current code (41 test files, 558 tests passing).
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Antigravity
Google Antigravity. The only provider that does not read files off disk: it speaks to a local language-server RPC endpoint instead.
- Source:
src/providers/antigravity.ts - Loading: lazy (
src/providers/index.ts:14-27). Lazy because the protobuf dependency is heavy. - Test: none. Mocking the RPC endpoint cleanly is the open issue.
Where it reads from
A local HTTPS RPC endpoint exposed by Antigravity's language server. The parser:
- Locates the running language-server process via
ps. - Reads its port and CSRF token from process metadata.
- Calls
GetCascadeTrajectoryGeneratorMetadataover HTTPS. - Validates the response (capped at 5-15 MB depending on cascade size).
If the language server is not running, the parser falls back to the cached results file (antigravity.ts:262-272).
Storage format
Protobuf. Cascade and response objects map to ParsedProviderCall directly; see antigravity.ts:299-323.
Caching
Custom file cache at $CODEBURN_CACHE_DIR/antigravity-results.json (defaults to ~/.cache/codeburn/). The version constant is at antigravity.ts:12; the cache machinery (loadCache, flushCache) lives in antigravity.ts:75-125. The cache is also used as the data source when the RPC endpoint is unavailable, not just as an optimization. Bumping the cache version forces a recompute.
Deduplication
Per <cascadeId>:<responseId> (antigravity.ts:308).
Quirks
- Antigravity is the only provider that requires a live process. A user who closes Antigravity loses the most-recent data until next launch (the cache covers older runs).
- The 5-15 MB cap on RPC responses is necessary because individual cascades can balloon. Raising it risks OOM on the user's machine.
- Token types are split across
inputTokens,responseOutputTokens, andthinkingOutputTokens(antigravity.ts:313-323). Thinking is billed at output rate.
When fixing a bug here
- Reproducing requires Antigravity running locally. There is no fixture for the RPC, which is a real testing gap.
- Before any change, capture a sample protobuf response (anonymized) so future regressions can be tested against a recording.
- If the bug is "no data after Antigravity update", the protobuf schema may have shifted. The parser's response handling at
antigravity.ts:299-323is the place to look. - If the bug is "stale data", check whether the RPC is reachable; the cache fallback can mask connectivity issues.