Closes construction - build and test across all seven units

Unit suites already passed individually; this is the full solution
together plus what none of them could check alone: two real hosts
talking to each other, a slave API key encrypted by one process and
decrypted by the next one after a restart, and headers landing on
actual static files instead of a simulated response.

aidlc-docs/features/gitea-deployment-workflow/audit.md

@@ -1192,3 +1192,23 @@ by Infrastructure Design. U5 carries REF-U3-01's Umami origin gate plus FR-21 an
 **Context**: CONSTRUCTION — all units complete; entering Build and Test
 
 ---
+## Build and Test Stage
+
+**Timestamp**: 2026-07-28T03:00:00Z
+
+**Build Status**: Success
+
+**Test Status**: Pass
+
+**Files Generated**:
+- build-instructions.md
+- unit-test-instructions.md
+- integration-test-instructions.md
+- performance-test-instructions.md (N/A, rationale documented)
+- build-and-test-summary.md
+
+**Details**: Re-confirmed full-suite results across all 7 units: 609 unit tests (372 backend + 237 frontend), 0 build errors, 0 vulnerable packages. Additionally ran live-host integration verification not achievable via unit tests: started both SlpModularCms.Api and SlpModularCms.Api.Slave against a real local SQL Server (podman container "sql-server"), published the admin SPA for real, and verified static content serving, SPA-fallback routing, header content-type scoping (HTML vs non-HTML) on genuine responses, master-slave communication succeeding across a process restart (proving the persistent Data Protection key ring survives it), and W3C trace-id correlation in real log output. Cleaned up generated wwwroot/ afterward (gitignored, not committed).
+
+**Operations Phase Decision**: Yes (Decided At: Requirements Analysis)
+
+---