TenantAtlas/docs/product
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feat(219): Finding ownership semantics + LEAN-001 constitution + backup_set unification (#256)
## Summary

This PR delivers three related improvements:

### 1. Finding Ownership Semantics (Spec 219)
- Add responsibility/accountability labels to findings and finding exceptions
- `owner_user_id` = accountable party (governance owner)
- `assignee_user_id` = responsible party (technical implementer)
- Expose Assign/Reassign actions in FindingResource with audit logging
- Add ownership columns and filters to finding list
- Propagate owner from finding to exception on creation
- Tests: ownership semantics, assignment audit, workflow actions

### 2. Constitution v2.7.0 — LEAN-001 Pre-Production Lean Doctrine
- New principle forbidding legacy aliases, migration shims, dual-write logic, and compatibility fixtures in a pre-production codebase
- AI-agent 4-question verification gate before adding any compatibility path
- Review rule: compatibility shims without answering the gate questions = merge blocker
- Exit condition: LEAN-001 expires at first production deployment
- Spec template: added default "Compatibility posture" block
- Agent instructions: added "Pre-production compatibility check" section

### 3. Backup Set Operation Type Unification
- Unified `backup_set.add_policies` and `backup_set.remove_policies` into single canonical `backup_set.update`
- Removed all legacy aliases, constants, and test fixtures
- Added lifecycle coverage for `backup_set.update` in config
- Updated all 14+ test files referencing legacy types

### Spec Artifacts
- `specs/219-finding-ownership-semantics/` — full spec, plan, tasks, research, data model, contracts, checklist

### Tests
- All affected tests pass (OperationCatalog, backup set, finding workflow, ownership semantics)

Co-authored-by: Ahmed Darrazi <ahmed.darrazi@live.de>
Reviewed-on: #256
2026-04-20 17:54:33 +00:00
..
standards docs: add decision-first operating foundations (#228) 2026-04-12 11:09:17 +00:00
discoveries.md feat: harden canonical run viewer and onboarding draft state (#173) 2026-03-15 18:32:04 +00:00
operator-semantic-taxonomy.md feat: normalize operator outcome taxonomy (#186) 2026-03-22 12:13:34 +00:00
principles.md Spec 188: canonical provider connection state cleanup (#219) 2026-04-10 11:22:56 +00:00
roadmap.md feat(219): Finding ownership semantics + LEAN-001 constitution + backup_set unification (#256) 2026-04-20 17:54:33 +00:00
spec-candidates.md feat(219): Finding ownership semantics + LEAN-001 constitution + backup_set unification (#256) 2026-04-20 17:54:33 +00:00