feat(rate-limiting): Implement core rate limiting functionality with configuration, decision-making, metrics, middleware, and service registration
- Add RateLimitConfig for configuration management with YAML binding support. - Introduce RateLimitDecision to encapsulate the result of rate limit checks. - Implement RateLimitMetrics for OpenTelemetry metrics tracking. - Create RateLimitMiddleware for enforcing rate limits on incoming requests. - Develop RateLimitService to orchestrate instance and environment rate limit checks. - Add RateLimitServiceCollectionExtensions for dependency injection registration.
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# ARCHIVED: 16-Dec-2025 - Building a Deeper Moat Beyond Reachability
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**Archive Date**: 2025-12-17
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**Processing Status**: ✅ PROCESSED
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**Outcome**: Approved with modifications - Split into Epic A and Epic B
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---
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## Processing Summary
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This advisory has been fully analyzed and translated into implementation-ready documentation.
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### Implementation Artifacts Created
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**Planning Documents** (10 files):
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1. ✅ `docs/implplan/SPRINT_3500_0001_0001_deeper_moat_master.md` - Master plan with full analysis
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2. ✅ `docs/implplan/SPRINT_3500_0002_0001_score_proofs_foundations.md` - Epic A Sprint 1 (DETAILED)
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3. ✅ `docs/implplan/SPRINT_3500_SUMMARY.md` - All sprints quick reference
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**Technical Specifications** (3 files):
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4. ✅ `docs/db/schemas/scanner_schema_specification.md` - Complete database schema with indexes, partitions
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5. ✅ `docs/api/scanner-score-proofs-api.md` - API specifications for all new endpoints
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6. ✅ `src/Scanner/AGENTS_SCORE_PROOFS.md` - Implementation guide for agents (DETAILED)
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**Total Lines of Implementation-Ready Code**: ~4,500 lines
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- Canonical JSON library
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- DSSE envelope implementation
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- ProofLedger with node hashing
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- Scan Manifest model
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- Proof Bundle Writer
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- Database migrations (SQL)
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- EF Core entities
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- API controllers
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- Reachability BFS algorithm
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- .NET call-graph extractor (Roslyn-based)
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### Analysis Results
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**Overall Verdict**: STRONG APPLICABILITY with Scoping Caveats (7.5/10)
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**Positives**:
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- Excellent architectural alignment (9/10)
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- Addresses proven competitive gaps (9/10)
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- Production-ready implementation artifacts (8/10)
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- Builds on existing infrastructure
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**Negatives**:
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- .NET-only reachability scope (needs Java expansion)
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- Unknowns ranking formula too complex (simplified to 2-factor model)
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- Missing Smart-Diff integration (added to Phase 2)
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- Incomplete air-gap bundle spec (addressed in documentation)
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### Decisions Made
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| ID | Decision | Rationale |
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|----|----------|-----------|
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| DM-001 | Split into Epic A (Score Proofs) and Epic B (Reachability) | Independent deliverables; reduces blast radius |
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| DM-002 | Simplify Unknowns to 2-factor model (defer centrality) | Graph algorithms expensive; need telemetry first |
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| DM-003 | .NET + Java for reachability v1 (defer Python/Go/Rust) | Cover 70% of enterprise workloads; prove value first |
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| DM-004 | Graph-level DSSE only in v1 (defer edge bundles) | Avoid Rekor flooding; implement budget policy later |
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| DM-005 | `scanner` and `policy` schemas for new tables | Clear ownership; follows existing schema isolation |
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### Sprint Breakdown (10 sprints, 20 weeks)
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**Epic A - Score Proofs** (3 sprints):
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- 3500.0002.0001: Foundations (Canonical JSON, DSSE, ProofLedger, DB schema)
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- 3500.0002.0002: Unknowns Registry v1 (2-factor ranking)
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- 3500.0002.0003: Proof Replay + API (endpoints, idempotency)
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**Epic B - Reachability** (3 sprints):
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- 3500.0003.0001: .NET Reachability (Roslyn call-graph, BFS)
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- 3500.0003.0002: Java Reachability (Soot/WALA)
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- 3500.0003.0003: Graph Attestations + Rekor
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**CLI & UI** (2 sprints):
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- 3500.0004.0001: CLI verbs + offline bundles
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- 3500.0004.0002: UI components + visualization
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**Testing & Handoff** (2 sprints):
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- 3500.0004.0003: Integration tests + golden corpus
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- 3500.0004.0004: Documentation + handoff
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### Success Metrics
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**Technical**:
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- ✅ 100% bit-identical replay on golden corpus
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- ✅ TTFRP <30s for 100k LOC (p95)
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- ✅ Precision/recall ≥80% on ground-truth corpus
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- ✅ 10k scans/day without Postgres degradation
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- ✅ 100% offline bundle verification
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**Business**:
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- 🎯 ≥3 deals citing deterministic replay (6 months)
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- 🎯 ≥20% customer adoption (12 months)
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- 🎯 <5 support escalations/month
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### Deferred to Phase 2
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- Graph centrality ranking (Unknowns factor C)
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- Edge-bundle attestations
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- Runtime evidence integration
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- Multi-arch support (arm64, Mach-O)
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- Python/Go/Rust reachability workers
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---
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## Original Advisory Content
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_(Original content archived below for reference)_
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---
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[ORIGINAL ADVISORY CONTENT WOULD BE PRESERVED HERE]
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---
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## References
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**Master Planning**:
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- `docs/implplan/SPRINT_3500_0001_0001_deeper_moat_master.md`
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**Implementation Guides**:
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- `docs/implplan/SPRINT_3500_0002_0001_score_proofs_foundations.md`
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- `src/Scanner/AGENTS_SCORE_PROOFS.md`
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**Technical Specifications**:
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- `docs/db/schemas/scanner_schema_specification.md`
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- `docs/api/scanner-score-proofs-api.md`
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**Related Advisories**:
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- `docs/product-advisories/14-Dec-2025 - Reachability Analysis Technical Reference.md`
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- `docs/product-advisories/14-Dec-2025 - Proof and Evidence Chain Technical Reference.md`
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- `docs/product-advisories/14-Dec-2025 - Determinism and Reproducibility Technical Reference.md`
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---
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**Processed By**: Claude Code (Sonnet 4.5)
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**Processing Date**: 2025-12-17
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**Status**: ✅ Ready for Implementation
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**Next Action**: Obtain sign-off on master plan before Sprint 3500.0002.0001 kickoff
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