semi implemented and features implemented save checkpoint

docs/implplan-blocked/audits/csproj-standards/Gateway/StellaOps.Gateway.WebService/StellaOps.Gateway.WebService.md

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+# Audit - StellaOps.Gateway.WebService
+
+## Project
+- Path: `src/Gateway/StellaOps.Gateway.WebService/StellaOps.Gateway.WebService.csproj`
+- Module: `Gateway`
+- Kind: `WebService`
+- SDK: `Microsoft.NET.Sdk.Web`
+- TargetFramework: `net10.0`
+- Audit date (UTC): 2026-01-30
+
+## Coding Standards Findings
+- Status: FAIL
+- Nullable: enable
+- TreatWarningsAsErrors: explicit true
+- Deterministic: inherited true
+- 100-line rule violations: 7
+- Service locator usage (BuildServiceProvider/GetService): 0
+- Analyzer enforcement: missing repo-wide (see summary).
+
+### Details
+- 100-line files:
+  - `src/Gateway/StellaOps.Gateway.WebService/Services/GatewayHostedService.cs` (531 lines)
+  - `src/Gateway/StellaOps.Gateway.WebService/Middleware/IdentityHeaderPolicyMiddleware.cs` (333 lines)
+  - `src/Gateway/StellaOps.Gateway.WebService/Program.cs` (281 lines)
+  - `src/Gateway/StellaOps.Gateway.WebService/Services/GatewayTransportClient.cs` (253 lines)
+  - `src/Gateway/StellaOps.Gateway.WebService/Middleware/SenderConstraintMiddleware.cs` (214 lines)
+  - `src/Gateway/StellaOps.Gateway.WebService/Configuration/GatewayOptions.cs` (213 lines)
+  - `src/Gateway/StellaOps.Gateway.WebService/Services/GatewayHealthMonitorService.cs` (106 lines)
+- Service locator matches:
+  - none
+
+### Fix Guidance
+- Split files over 100 lines into smaller types or partials.
+
+## Testing Fullness Findings
+- Status: FAIL
+- Expected layers: Unit, Integration, Security, Offline
+- Detected test projects: src/Gateway/__Tests/StellaOps.Gateway.WebService.Tests/StellaOps.Gateway.WebService.Tests.csproj [Unit], src/Router/__Tests/StellaOps.Gateway.WebService.Tests/StellaOps.Gateway.WebService.Tests.csproj [Unit]
+- Missing layers: Integration, Security, Offline
+
+### Manual checks required
+- Observability contract tests for WebService/Worker.
+- Offline execution (tests must run without network access).
+
+### Fix Guidance
+- Add integration tests for cross-component flows.
+- Add security tests for authn/authz or input validation.
+- Add offline/airgap coverage with fixtures only.