feat: provider extensions and drop claude-code-router mode (#295)

* feat: add ReportOutputProvider for consumer-extended report artifacts

* fix: thread deliverablesSubdir through report assembly

* fix: produce structured report JSON on resume path

* fix: fail loud on structured report output provider errors

* feat: extend checkpoint provider and container DI for consumer-specific backends

* fix: pre-create .shannon overlay mount points on all platforms

* chore: drop claude-code-router mode

* fix: drop 'resets' keyword from spending-cap text patterns

docker-compose.yml

@@ -19,34 +19,5 @@ services:
       retries: 10
       start_period: 30s
 
-  # Optional: claude-code-router for multi-model support
-  # Start with: ROUTER=true ./shannon start ...
-  router:
-    image: node:20-slim
-    container_name: shannon-router
-    profiles: ["router"]  # Only starts when explicitly requested
-    command: >
-      sh -c "apt-get update && apt-get install -y gettext-base &&
-             npm install -g @musistudio/claude-code-router &&
-             mkdir -p /root/.claude-code-router &&
-             envsubst < /config/router-config.json > /root/.claude-code-router/config.json &&
-             ccr start"
-    ports:
-      - "127.0.0.1:3456:3456"
-    volumes:
-      - ./apps/cli/infra/router-config.json:/config/router-config.json:ro
-    environment:
-      - HOST=0.0.0.0
-      - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY:-}
-      - OPENAI_API_KEY=${OPENAI_API_KEY:-}
-      - OPENROUTER_API_KEY=${OPENROUTER_API_KEY:-}
-      - ROUTER_DEFAULT=${ROUTER_DEFAULT:-openai,gpt-4o}
-    healthcheck:
-      test: ["CMD", "node", "-e", "require('http').get('http://localhost:3456/health', r => process.exit(r.statusCode === 200 ? 0 : 1)).on('error', () => process.exit(1))"]
-      interval: 10s
-      timeout: 5s
-      retries: 5
-      start_period: 30s
-
 volumes:
   temporal-data: