lightweight workflowTree, build debounce, minor fixes
- Index phase, label, model, state, duration, tokens per workflow agent
- Index duration, total_tokens, status, name per workflow run
- workflowTree returns parsed result + agent summaries instead of
dumping all messages
- 30s debounce on buildIndex to avoid repeated directory scans
- Fix broken BASH_EXIT_PAT (SQLite LIKE has no character classes)
- Fix SKILL.md step numbering, document FTS5 hyphen limitation
Add sessions() as first-class entry point for session discovery with
project/time/branch filters. Extend summaries, workflows, failures,
subagents, fileHistory with the same opts vocabulary that search()
already had — no more pulling full datasets to filter client-side.
tommy0103