stabilize tests

src/__Analyzers/AGENTS.md

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+# AGENTS - __Analyzers Module
+
+## Working Directory
+- `src/__Analyzers/**` (analyzers and analyzer tests).
+
+## Required Reading
+- `docs/README.md`
+- `docs/07_HIGH_LEVEL_ARCHITECTURE.md`
+- `docs/modules/platform/architecture-overview.md`
+- `docs/CODING_STANDARDS.md`
+- `docs/code-of-conduct/TESTING_PRACTICES.md`
+
+## Engineering Rules
+- Analyzer output must be deterministic and offline; no network or filesystem writes.
+- Diagnostics IDs and messages must remain stable; keep ordering deterministic.
+- Prefer minimal allocations and avoid global state.
+
+## Testing & Verification
+- Tests live in `src/__Analyzers/**.Tests` projects.
+- Add baseline tests for each rule and validate diagnostics deterministically.
+
+## Sprint Discipline
+- Update sprint tracker status and Decisions & Risks for any rule or contract change.