feat: agent compression, inspection logic, governance hooks (#491, #485, #482) (#688)
Implements three roadmap features:
- Agent description compression (#491): New `agent-compress` module with
catalog/summary/full compression modes and lazy-loading. Reduces ~26k
token agent descriptions to ~2-3k catalog entries for context efficiency.
- Inspection logic (#485): New `inspection` module that detects recurring
failure patterns in skill_runs. Groups by skill + normalized failure
reason, generates structured reports with suggested remediation actions.
Configurable threshold (default: 3 failures).
- Governance event capture hook (#482): PreToolUse/PostToolUse hook that
detects secrets, policy violations, approval-required commands, and
elevated privilege usage. Gated behind ECC_GOVERNANCE_CAPTURE=1 flag.
Writes to governance_events table via JSON-line stderr output.
59 new tests (16 + 16 + 27), all passing.
Affaan Mustafa