v0.2.79

Recognize Antigravity Gemini 4 Argon model ID 1417 and model_placeholder_m417. Numeric IDs, stored labels and display names now resolve to the priced gemini-4-argon identity. Verified generation/step protobuf metadata and real SQLite collector fixtures, full tests, typecheck, build and npm package validation. No new telemetry, permissions or upload fields.