- Replace stub sessions commands with full implementations
- sessions list: lazy-syncs all discovered sessions, queries DB sorted most-recent-first, supports table/json/xml output and --verbose full UUID display
- sessions dump: resolves 8-char prefix via LIKE query, fetches raw JSONL from DB, renders table/json/xml with content preview (truncated at 80 chars unless --verbose)
- sessions transcribe: prints stats header then chat log; thinking/tool-result blocks gated by --include flags; json/xml output serialize structured messages
- --follow for dump and transcribe: bypasses DB, polls file with byte-seek offset at 500ms intervals
- Update agents.rs stubs to accept &GlobalOpts (Wave 6 prep)
- Update main.rs to pass &cli.global to all session and agent commands
- 89 tests pass, 0 clippy warnings
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>