# Archived Superseded Advisories

**Archived:** 2025-12-26
**Reason:** Concepts already implemented or covered by existing sprints

## Advisory Status

These advisories described features that are **already substantially implemented** in the codebase or covered by existing sprint files.

| Advisory | Status | Superseded By |
|----------|--------|---------------|
| `25-Dec-2025 - Implementing Diff‑Aware Release Gates.md` | SUPERSEDED | SPRINT_20251226_001_BE through 006_DOCS |
| `26-Dec-2026 - Diff‑Aware Releases and Auditable Exceptions.md` | SUPERSEDED | SPRINT_20251226_003_BE_exception_approval.md |
| `26-Dec-2026 - Smart‑Diff as a Core Evidence Primitive.md` | SUPERSEDED | Existing DeltaVerdict library |
| `26-Dec-2026 - Reachability as Cryptographic Proof.md` | SUPERSEDED | Existing ProofChain library + SPRINT_007/009/010/011 |

## Existing Implementation

The following components already implement the advisory concepts:

### DeltaVerdict & DeltaComputer
- `src/Policy/__Libraries/StellaOps.Policy/Deltas/DeltaVerdict.cs`
- `src/Policy/__Libraries/StellaOps.Policy/Deltas/DeltaComputer.cs`
- `src/__Libraries/StellaOps.DeltaVerdict/` (complete library)

### Exception Management
- `src/Policy/__Libraries/StellaOps.Policy.Storage.Postgres/Models/ExceptionEntity.cs`
- `src/Policy/StellaOps.Policy.Engine/Adapters/ExceptionAdapter.cs`
- `src/Policy/__Libraries/StellaOps.Policy.Exceptions/` (complete library)

### ProofChain & Reachability Proofs
- `src/Attestor/__Libraries/StellaOps.Attestor.ProofChain/` (complete library):
  - `Statements/ReachabilityWitnessStatement.cs` - Entry→sink proof chains
  - `Statements/ReachabilitySubgraphStatement.cs` - Minimal subgraph attestation
  - `Statements/ProofSpineStatement.cs` - Merkle-aggregated proof bundles
  - `Predicates/ReachabilitySubgraphPredicate.cs` - Subgraph predicate
  - `Identifiers/ContentAddressedIdGenerator.cs` - Content-addressed IDs
  - `Merkle/DeterministicMerkleTreeBuilder.cs` - Merkle tree construction
  - `Signing/ProofChainSigner.cs` - DSSE signing
  - `Verification/VerificationPipeline.cs` - Proof verification
- `src/__Libraries/StellaOps.Replay.Core/ReplayManifest.cs` - Replay manifests

### Covering Sprints
- `docs/implplan/SPRINT_20251226_001_BE_cicd_gate_integration.md` - Gate endpoints, CI/CD
- `docs/implplan/SPRINT_20251226_002_BE_budget_enforcement.md` - Risk budget automation
- `docs/implplan/SPRINT_20251226_003_BE_exception_approval.md` - Exception workflows (21 tasks)
- `docs/implplan/SPRINT_20251226_004_FE_risk_dashboard.md` - Side-by-side UI
- `docs/implplan/SPRINT_20251226_005_SCANNER_reachability_extractors.md` - Language extractors
- `docs/implplan/SPRINT_20251226_006_DOCS_advisory_consolidation.md` - Documentation
- `docs/implplan/SPRINT_20251226_007_BE_determinism_gaps.md` - Determinism gaps, metrics (25 tasks)
- `docs/implplan/SPRINT_20251226_009_SCANNER_funcproof.md` - FuncProof generation (18 tasks)
- `docs/implplan/SPRINT_20251226_010_SIGNALS_runtime_stack.md` - eBPF stack capture (17 tasks)
- `docs/implplan/SPRINT_20251226_011_BE_auto_vex_downgrade.md` - Auto-VEX from runtime (16 tasks)

## Remaining Gaps Added to Sprints

Minor gaps from these advisories were added to existing sprints:

**Added to SPRINT_20251226_003_BE_exception_approval.md:**
- EXCEPT-16: Auto-revalidation job
- EXCEPT-17: Re-review gate flip on failure
- EXCEPT-18: Exception inheritance (repo→image→env)
- EXCEPT-19: Conflict surfacing for shadowed exceptions
- EXCEPT-20: OCI-attached exception attestation
- EXCEPT-21: CLI export command

**Added to SPRINT_20251226_007_BE_determinism_gaps.md:**
- DET-GAP-21: Proof generation rate metric
- DET-GAP-22: Median proof size metric
- DET-GAP-23: Replay success rate metric
- DET-GAP-24: Proof dedup ratio metric
- DET-GAP-25: "Unknowns" burn-down tracking

## Cross-References

If you arrived here via a broken link, see:
- `docs/implplan/SPRINT_20251226_*.md` for implementation tasks
- `src/Policy/__Libraries/StellaOps.Policy/Deltas/` for delta computation
- `src/__Libraries/StellaOps.DeltaVerdict/` for verdict models