feat: add entropy policy banner and policy gate indicator components

- Implemented EntropyPolicyBannerComponent with configuration for entropy policies, including thresholds, current scores, and mitigation steps.
- Created PolicyGateIndicatorComponent to display the status of policy gates, including passed, failed, and warning gates, with detailed views for determinism and entropy gates.
- Added HTML and SCSS for both components to ensure proper styling and layout.
- Introduced computed properties and signals for reactive state management in Angular.
- Included remediation hints and actions for user interaction within the policy gate indicator.

docs/product-advisories/ADVISORY_INDEX.md

@@ -0,0 +1,130 @@
+# Product Advisory Index
+
+This index consolidates the November 2025 product advisories, identifying canonical documents and duplicates.
+
+## Canonical Advisories (Active)
+
+These are the authoritative advisories to reference for implementation:
+
+### CVSS v4.0
+- **Canonical:** `25-Nov-2025 - Add CVSS v4.0 Score Receipts for Transparency.md`
+- **Sprint:** SPRINT_0190_0001_0001_cvss_v4_receipts.md
+- **Status:** New sprint created
+
+### SBOM/VEX Pipeline
+- **Canonical:** `27-Nov-2025 - Deep Architecture Brief - SBOM‑First, VEX‑Ready Spine.md`
+- **Sprint:** SPRINT_0186_0001_0001_record_deterministic_execution.md (tasks 15a-15f)
+- **Supersedes:**
+  - `24-Nov-2025 - Bridging OpenVEX and CycloneDX for .NET.md` → archive
+  - `25-Nov-2025 - Revisiting Determinism in SBOM→VEX Pipeline.md` → archive
+  - `26-Nov-2025 - From SBOM to VEX - Building a Transparent Chain.md` → archive
+
+### Rekor/DSSE Batch Sizing
+- **Canonical:** `26-Nov-2025 - Handling Rekor v2 and DSSE Air‑Gap Limits.md`
+- **Sprint:** SPRINT_0401_0001_0001_reachability_evidence_chain.md (DSSE tasks)
+- **Supersedes:**
+  - `27-Nov-2025 - Rekor Envelope Size Heuristic.md` → archive (duplicate)
+  - `27-Nov-2025 - DSSE and Rekor Envelope Size Heuristic.md` → archive (duplicate)
+  - `27-Nov-2025 - Optimizing DSSE Batch Sizes for Reliable Logging.md` → archive (duplicate)
+
+### Graph Revision IDs
+- **Canonical:** `26-Nov-2025 - Use Graph Revision IDs as Public Trust Anchors.md`
+- **Sprint:** SPRINT_0401_0001_0001_reachability_evidence_chain.md (existing tasks)
+- **Supersedes:**
+  - `25-Nov-2025 - Hash‑Stable Graph Revisions Across Systems.md` → archive (earlier version)
+
+### Reachability Benchmark (Public)
+- **Canonical:** `24-Nov-2025 - Designing a Deterministic Reachability Benchmark.md`
+- **Sprint:** SPRINT_0513_0001_0001_public_reachability_benchmark.md
+- **Related:**
+  - `26-Nov-2025 - Opening Up a Reachability Dataset.md` → complementary (dataset focus)
+
+### Unknowns Registry
+- **Canonical:** `27-Nov-2025 - Managing Ambiguity Through an Unknowns Registry.md`
+- **Sprint:** SPRINT_0140_0001_0001_runtime_signals.md (existing implementation)
+- **Extends:** `archived/18-Nov-2025 - Unknowns-Registry.md`
+- **Status:** Already implemented in Signals module; advisory validates design
+
+### Explainability
+- **Canonical (Graphs):** `27-Nov-2025 - Making Graphs Understandable to Humans.md`
+- **Canonical (Verdicts):** `27-Nov-2025 - Explainability Layer for Vulnerability Verdicts.md`
+- **Sprint:** SPRINT_0401_0001_0001_reachability_evidence_chain.md (UI-CLI tasks)
+- **Status:** Complementary advisories - graphs cover edge reasons, verdicts cover audit trails
+
+### VEX Proofs
+- **Canonical:** `25-Nov-2025 - Define Safe VEX 'Not Affected' Claims with Proofs.md`
+- **Sprint:** SPRINT_0401_0001_0001_reachability_evidence_chain.md (POLICY-VEX tasks)
+
+### Binary Reachability
+- **Canonical:** `27-Nov-2025 - Verifying Binary Reachability via DSSE Envelopes.md`
+- **Sprint:** SPRINT_0401_0001_0001_reachability_evidence_chain.md (GRAPH-HYBRID tasks)
+
+### Scanner Roadmap
+- **Canonical:** `27-Nov-2025 - Blueprint for a 2026‑Ready Scanner.md`
+- **Sprint:** Multiple sprints (0186, 0401, 0512)
+- **Status:** High-level roadmap document
+
+## Files to Archive
+
+The following files should be moved to `archived/` as they are superseded:
+
+```
+# Duplicates/superseded
+24-Nov-2025 - Bridging OpenVEX and CycloneDX for .NET.md
+25-Nov-2025 - Revisiting Determinism in SBOM→VEX Pipeline.md
+25-Nov-2025 - Hash‑Stable Graph Revisions Across Systems.md
+26-Nov-2025 - From SBOM to VEX - Building a Transparent Chain.md
+27-Nov-2025 - Rekor Envelope Size Heuristic.md
+27-Nov-2025 - DSSE and Rekor Envelope Size Heuristic.md
+27-Nov-2025 - Optimizing DSSE Batch Sizes for Reliable Logging.md
+
+# Junk/malformed files
+24-Nov-2025 - 1 copy 2.md
+24-Nov-2025 - Designing a Deterministic Reachability Benchmarkmd  (missing dot)
+25-Nov-2025 - Half‑Life Confidence Decay for Unknownsmd  (missing dot)
+```
+
+## Sprint Cross-Reference
+
+| Advisory Topic | Sprint ID | Status |
+|---------------|-----------|--------|
+| CVSS v4.0 | SPRINT_0190_0001_0001 | NEW |
+| SPDX 3.0.1 / SBOM | SPRINT_0186_0001_0001 | AUGMENTED |
+| Reachability Benchmark | SPRINT_0513_0001_0001 | NEW |
+| Reachability Evidence | SPRINT_0401_0001_0001 | EXISTING |
+| Unknowns Registry | SPRINT_0140_0001_0001 | EXISTING (implemented) |
+| Graph Revision IDs | SPRINT_0401_0001_0001 | EXISTING |
+| DSSE/Rekor Batching | SPRINT_0401_0001_0001 | EXISTING |
+
+## Implementation Priority
+
+Based on gap analysis:
+
+1. **P0 - CVSS v4.0** (Sprint 0190) - Industry moving to v4.0, genuine gap
+2. **P1 - SPDX 3.0.1** (Sprint 0186 tasks 15a-15f) - Standards compliance
+3. **P1 - Public Benchmark** (Sprint 0513) - Differentiation/marketing value
+4. **P2 - Explainability** (Sprint 0401) - UX enhancement, existing tasks
+5. **P3 - Already Implemented** - Unknowns, Graph IDs, DSSE batching
+
+## Implementer Quick Reference
+
+For each topic, the implementer should read:
+
+1. **Sprint file** - Contains task definitions, dependencies, working directories
+2. **Documentation Prerequisites** - Listed in each sprint file
+3. **Canonical advisory** - Full product context and rationale
+4. **Module AGENTS.md** - If exists, contains module-specific coding guidance
+
+### Key Module Docs to Read Before Implementation
+
+| Module | Architecture Doc | AGENTS.md |
+|--------|-----------------|-----------|
+| Policy | `docs/modules/policy/architecture.md` | `src/Policy/*/AGENTS.md` |
+| Scanner | `docs/modules/scanner/architecture.md` | `src/Scanner/*/AGENTS.md` |
+| Sbomer | `docs/modules/sbomer/architecture.md` | `src/Sbomer/*/AGENTS.md` |
+| Signals | `docs/modules/signals/architecture.md` | `src/Signals/*/AGENTS.md` |
+| Attestor | `docs/modules/attestor/architecture.md` | `src/Attestor/*/AGENTS.md` |
+
+---
+*Index created: 2025-11-27*
+*Last updated: 2025-11-27*