Add Command Code session support

[aaronflorey]

Summary

• add a Command Code file-based parser and transcript discovery for ~/.commandcode/projects
• register the new agent and wire it into sync processing
• add parser and registry tests for Command Code sessions

Testing

• mise exec -- go test ./internal/parser ./internal/sync

[roborev-ci]

roborev: Combined Review (352af76)

High/Medium issues remain: Command Code parsing is registered, but the sync engine does not yet process or incrementally classify Command Code session files.

High

• internal/sync/engine.go:2886 - processFile never dispatches parser.AgentCommandCode, so discovered Command Code files fall through to unknown agent type: commandcode and cannot be synced.
  • Fix: Add case parser.AgentCommandCode: res = e.processCommandCode(file, info) and cover it with an engine-level sync/dispatch test.

Medium

• internal/sync/engine.go:842 - classifyOnePath has no Command Code path classifier, so fsnotify-driven SyncPaths ignores changes under .commandcode/projects even after the agent is registered.
  • Fix: Add a Command Code classifier for <projectsDir>/<slugified-cwd>/<session-id>.jsonl, excluding checkpoint/prompt sidecars, plus a classify test.

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Panel: ci_default_security | Synthesis: codex, 10s | Members: codex_default (codex/default, done, 3m24s), codex_security (codex/security, done, 54s) | Total: 4m28s

[roborev-ci]

roborev: Combined Review (7e366c2)

Summary verdict: two medium sync/persistence issues remain; no high or critical findings were reported.

Medium

• Location: internal/parser/commandcode.go:266
  Problem: DisplayName is populated from .meta.json, but the sync path never copies ParsedSession.DisplayName into db.Session. toDBSession only copies FirstMessage, so Command Code titles are dropped after SyncPaths/sync and never reach the UI.
  Fix: Copy non-empty pw.sess.DisplayName into s.DisplayName during toDBSession. UpsertSession already preserves existing display names on conflict, so this can remain insert-only.

• Location: internal/sync/engine.go:863
  Problem: Command Code depends on a sibling <session>.meta.json for title and fallback cwd/project data, but sync dispatch only classifies <session>.jsonl, and processCommandCode skips based only on the JSONL file’s size/mtime. If the meta file is written after the transcript or later changes due to a rename, the watcher ignores it and full sync skips the unchanged JSONL, leaving stale or missing metadata.
  Fix: Classify .meta.json changes by remapping them to the matching .jsonl, and use combined JSONL+meta file info or another sidecar-aware invalidation path for shouldSkipByPath.

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Panel: ci_default_security | Synthesis: codex, 10s | Members: codex_default (codex/default, done, 4m30s), codex_security (codex/security, done, 1m55s) | Total: 6m35s

[roborev-ci]

roborev: Combined Review (4347c90)

Medium-severity issues found; no High or Critical findings.

Medium

• internal/db/sessions.go:960 - display_name backfills whenever the stored value is NULL, which makes an explicit user clear non-sticky. RenameSession(id, nil) clears the title, but the next sync of a Command Code session with metadata restores excluded.display_name, so users can no longer clear parser-provided titles.

  • Fix: Distinguish “never populated” from “user cleared” before backfilling, for example with an explicit metadata flag/sentinel or by limiting this backfill to rows that have not had display-name user management applied.

• internal/sync/engine.go:2254 - Command Code’s .meta.json mtime is only considered inside processCommandCode; SyncAllSince filters discovered files using discoveredFileMtime, which still stats only the .jsonl. If a metadata file arrives or changes while the watcher is not running, the unchanged transcript is filtered out before it can be reparsed, leaving display_name, cwd, and project metadata stale until a full sync.

  • Fix: Make the Command Code effective mtime available to pre-filtering paths, and also use it from SourceMtime so fallback polling sees sidecar-only changes.

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Panel: ci_default_security | Synthesis: codex, 12s | Members: codex_default (codex/default, done, 5m51s), codex_security (codex/security, done, 1m50s) | Total: 7m53s