openai/gpt-chat-latest → A (10:1)

Side A replaces GitHub API-based commit collection with a deterministic multi-repository Git discovery system, adding immutable discovery snapshots, replayable attribution, patch-identity deduplication, concurrency/file locking, emission integration, and extensive real-Git/stateful tests. Side B is primarily a CLI and documentation reorganization, renaming commands (for example `ingest` to `forum post` and `forum` to `forum list/show`) and updating help text and integration tests without comparable changes to the project's core behavior.