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

apps/cli/infra/compose.yml

@@ -19,32 +19,5 @@ services:
       retries: 10
       start_period: 30s
 
-  router:
-    image: node:20-slim
-    container_name: shannon-router
-    profiles: ["router"]
-    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:
-      - ./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:

apps/cli/infra/router-config.json

@@ -1,31 +0,0 @@
-{
-  "HOST": "0.0.0.0",
-  "APIKEY": "shannon-router-key",
-  "LOG": true,
-  "LOG_LEVEL": "info",
-  "NON_INTERACTIVE_MODE": true,
-  "API_TIMEOUT_MS": 600000,
-  "Providers": [
-    {
-      "name": "openai",
-      "api_base_url": "https://api.openai.com/v1/chat/completions",
-      "api_key": "$OPENAI_API_KEY",
-      "models": ["gpt-5.2", "gpt-5-mini"],
-      "transformer": {
-        "use": [["maxcompletiontokens", { "max_completion_tokens": 16384 }]]
-      }
-    },
-    {
-      "name": "openrouter",
-      "api_base_url": "https://openrouter.ai/api/v1/chat/completions",
-      "api_key": "$OPENROUTER_API_KEY",
-      "models": ["google/gemini-3-flash-preview"],
-      "transformer": {
-        "use": ["openrouter"]
-      }
-    }
-  ],
-  "Router": {
-    "default": "$ROUTER_DEFAULT"
-  }
-}