refactor: large codebase cleanup - consolidate schemas, migrate to Drizzle ORM, extract frontend components, modernize Docker builds

- Consolidate all DB schema definitions into packages/shared as single source of truth
- Migrate backend from raw SQL to Drizzle ORM across all modules
- Extract frontend inline UI into separate component files
- Refactor discord-gateway circuitBreaker into conversationState + moderationState
- Convert messageStore to Proxy singleton pattern
- Add validateBody/validateQuery middleware + Zod schemas for API endpoints
- Modernize Docker builds with multi-stage + pnpm deploy
- Migrate CI/CD from deployment to image-based pipeline
- Remove 60+ unused/dead files (~15K lines)
- Update color scheme from sky-blue to teal-cyan
- Move DB connection management to @bete/shared/database

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

pnpm-lock.yaml

@@ -29,6 +29,9 @@ importers:
       drizzle-orm:
         specifier: ^0.45.2
         version: 0.45.2(@opentelemetry/api@1.9.1)(@types/pg@8.20.0)(pg@8.21.0)
+      pg:
+        specifier: ^8.13.0
+        version: 8.21.0
       pino:
         specifier: ^9.0.0
         version: 9.14.0
@@ -39,6 +42,9 @@ importers:
       '@types/node':
         specifier: ^25.9.0
         version: 25.9.0
+      '@types/pg':
+        specifier: ^8.11.0
+        version: 8.20.0
       pino-pretty:
         specifier: ^13.1.3
         version: 13.1.3
@@ -3977,9 +3983,6 @@ packages:
     peerDependencies:
       pg: '>=8.0'
 
-  pg-protocol@1.13.0:
-    resolution: {integrity: sha512-zzdvXfS6v89r6v7OcFCHfHlyG/wvry1ALxZo4LqgUoy7W9xhBDMaqOuMiF3qEV45VqsN6rdlcehHrfDtlCPc8w==}
-
   pg-protocol@1.14.0:
     resolution: {integrity: sha512-n5taZ1kO3s9ngDTVxsEznOqCyToTgz0FLuPq0B33COy5pPpuWJpY3/2oRBVETuOgzdqRXfWpM9HIhp2LBBT1BA==}
 
@@ -6546,8 +6549,8 @@ snapshots:
 
   '@types/pg@8.20.0':
     dependencies:
-      '@types/node': 25.8.0
-      pg-protocol: 1.13.0
+      '@types/node': 25.9.0
+      pg-protocol: 1.14.0
       pg-types: 2.2.0
 
   '@types/qs@6.15.1': {}
@@ -8130,8 +8133,6 @@ snapshots:
     dependencies:
       pg: 8.21.0
 
-  pg-protocol@1.13.0: {}
-
   pg-protocol@1.14.0: {}
 
   pg-types@2.2.0: