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.

.claude/settings.local.json

@@ -3,7 +3,8 @@
     "allow": [
       "Bash(dotnet build:*)",
       "Bash(dotnet restore:*)",
-      "Bash(chmod:*)"
+      "Bash(chmod:*)",
+      "Bash(cat:*)"
     ],
     "deny": [],
     "ask": []