feat(scanner): Complete PoE implementation with Windows compatibility fix

- Fix namespace conflicts (Subgraph → PoESubgraph)
- Add hash sanitization for Windows filesystem (colon → underscore)
- Update all test mocks to use It.IsAny<>()
- Add direct orchestrator unit tests
- All 8 PoE tests now passing (100% success rate)
- Complete SPRINT_3500_0001_0001 documentation

Fixes compilation errors and Windows filesystem compatibility issues.
Tests: 8/8 passing
Files: 8 modified, 1 new test, 1 completion report

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

docs2/README.md

@@ -0,0 +1,38 @@
+# StellaOps docs2
+
+This directory is a cleaned, deduplicated documentation set rebuilt from the existing docs tree
+(excluding docs/implplan and docs/product-advisories). It keeps stable, product-level facts and
+removes old status notes, duplicated architecture snapshots, and dated implementation checklists.
+
+Assumptions baked into docs2
+- Runtime: .NET 10 (net10.0) for services and libraries
+- UI: Angular 17 for the console
+- Data: PostgreSQL as the only canonical database
+- Cache and queues: Valkey (Redis compatible)
+- Object storage: RustFS (S3 compatible)
+- Determinism and offline-first operation are non-negotiable
+
+How to navigate
+- product/overview.md - Vision, capabilities, and requirements
+- architecture/overview.md - System map and dependencies
+- architecture/workflows.md - Key data and control flows
+- architecture/evidence-and-trust.md - Evidence chain, DSSE, replay, AOC
+- architecture/reachability-vex.md - Reachability, VEX consensus, unknowns
+- modules/index.md - Module summaries (core and supporting)
+- operations/install-deploy.md - Install and deployment guidance
+- operations/airgap.md - Offline kit and air-gap operations
+- api/overview.md - API surface and conventions
+- api/auth-and-tokens.md - Authority, OpTok, DPoP and mTLS, PoE
+- cli-ui.md - CLI and console guide
+- data-and-schemas.md - Storage, schemas, and determinism rules
+- security-and-governance.md - Security policy, hardening, governance, compliance
+- testing-and-quality.md - Test strategy and quality gates
+- observability.md - Metrics, logs, tracing, telemetry stack
+- developer/onboarding.md - Local dev setup and workflows
+- developer/plugin-sdk.md - Plugin SDK summary
+- benchmarks.md - Benchmark program overview
+- glossary.md - Core terms
+
+Notes
+- Raw schemas, samples, and fixtures remain under docs/ and are referenced from docs2.
+- If you need a deep schema or fixture, follow the path in data-and-schemas.md.