fix(compliance): correct Invariant entry in CONTRIBUTORS.md — use proper single-* format and place at end-of-file with PR #8701 / issue #8524 reference

The previous commit (de996894) corrupted the contributors entry:
- Used double ** prefix instead of single *
- Placed it mid-stream replacing a valid entry instead of adding to end

ISSUES CLOSED: #8524

CONTRIBUTORS.md

@@ -15,9 +15,7 @@ Below are some of the specific details of various contributions.
 * Jeffrey Phillips Freeman has acted as Lead Developer, daily contributor, and Project Owner.
 * Brent E. Edwards has contributed quality assurance, test coverage, and CI pipeline improvements.
 * HAL 9000 has contributed automated implementation, bug fixes, and feature development as part of the CleverAgents automation pool.
-* * HAL 9000 has contributed the Invariant Data Model and Database Schema (PR #8701 / issue #8524): implemented the ``Invariant`` SQLAlchemy ORM model with fields id (UUID), description (text), created_at (timestamp), and is_active (bool); Alembic migration ``m3_001_invariants_table`` creates the ``invariants`` table with index on ``is_active``; BDD Behave unit tests and Robot Framework integration tests.
-
-HAL 9000 has contributed concurrency safety improvements, including thread-safe context tier management (issue #7547) for parallel plan execution.
+* HAL 9000 has contributed concurrency safety improvements, including thread-safe context tier management (issue #7547) for parallel plan execution.
 * HAL 9000 has contributed the plan concurrency race-condition fix (#7989): wired `LockService` into the plan lifecycle, guarding `execute_plan()` and `apply_plan()` with plan-level advisory locks and unique per-invocation owner identities to prevent silent concurrent state corruption.
 * HAL 9000 has contributed the bug-hunt-pool-supervisor non-blocking tracking fix: updated step 5 to be best-effort and added rule 9 to prevent the automation-tracking-manager call from blocking the main supervisor loop.
 * HAL 9000 has contributed the plugin entry point security hardening fix (#7476): enforced entry point allowlist validation before importing plugin modules to prevent malicious plugin loading.
@@ -38,3 +36,4 @@ HAL 9000 has contributed concurrency safety improvements, including thread-safe
 * HAL 9000 has contributed the error-suppression removal fix (PR #9247 / issue #9060): removed both `try...except Exception:` blocks in `register_registry_agents()` that silently suppressed errors from `actor_registry.list_actors()` and the route bridge refresh, enabling exceptions to propagate per CONTRIBUTING.md fail-fast policy. Added three Behave scenarios verifying RuntimeError, AttributeError, and TypeError propagation.
 * HAL 9000 has contributed the Strategize phase full context snapshot fix (issue #9056): added `_build_strategize_context_snapshot()` helper to `PlanLifecycleService`, updated `_try_record_decision()` to accept and forward a `ContextSnapshot` parameter, and added BDD test coverage verifying all four `ContextSnapshot` fields (`hot_context_hash`, `hot_context_ref`, `actor_state_ref`, `relevant_resources`) are populated during the Strategize phase.
 * HAL 9000 has contributed the ACMS context path matching fix (PR #10975 / issue #10972): corrects `_path_matches()` and `_matches_pattern()` to properly match absolute fragment paths against relative glob patterns by auto-prefixing with `**/` before calling `PurePath.full_match()`, preventing silent inefficacy of include/exclude filters for absolute paths in fragment metadata.
+* HAL 9000 has contributed the Invariant Data Model and Database Schema (PR #8701 / issue #8524): SQLAlchemy ORM model with fields id (UUID), description (text), created_at (timestamp), and is_active (bool); Alembic migration ``m3_001_invariants_table`` creating the ``invariants`` table with index on ``is_active`` for efficient active-filter queries; BDD Behave unit tests and Robot Framework integration tests.