[AZ-350] Close 03-code-quality-refactoring: Phase 6+7 + FINAL_report

Phase 6 (Verification): smoke run green (format gate + 200/200
unit + integration smoke). verification_report.md captures
metric deltas vs Phase 0 baseline; all 5 ACs met, all 4
constraints honored, 0 regressions.

Phase 7 (Documentation):
- module-layout.md: corrected DataAccess->Common dependency
  (was mistakenly documented as "Imports from: (none)" by
  prior AZ-315 baseline; csproj reference + 7 import sites
  have actually been there since AZ-309).
- architecture_compliance_baseline.md: F5 entry revised to
  reflect the actual layering invariant (one-way: Common
  MUST NOT import from DataAccess, but DataAccess MAY
  import from Common).
- 00_discovery.md: added "Updates Since Baseline" section
  enumerating the AZ-309 split + AZ-350 27-change run +
  AZ-372 tooling additions; original tree kept as a
  2026-05-10 snapshot.

FINAL_report: complete run summary (10 batches, 27 tasks,
3 K=3 cumulative reviews, baseline->final metric table,
remaining items, lessons learned).

Autodev state: advance Step 8 -> Step 9 (New Task);
sub_step reset to phase 0 awaiting-invocation.

Co-authored-by: Cursor <cursoragent@cursor.com>

_docs/_autodev_state.md

@@ -2,12 +2,12 @@
 
 ## Current Step
 flow: existing-code
-step: 8
-name: Refactor
-status: in_progress
+step: 9
+name: New Task
+status: not_started
 sub_step:
-  phase: 5
-  name: test-sync
+  phase: 0
+  name: awaiting-invocation
   detail: ""
 retry_count: 0
 cycle: 1