feat(deploy): 도커 배포(deploy/docker: compose+Dockerfile+deploy.sh) — 우리 환경용. 렌더러가 FabriX/OpenRouter 템플릿 자동 선택, 호스트 변수화. bare deploy.sh 는 git pull 포함. Phoenix 도커 compose

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

5_django_backend/opencode/opencode.fabrix.json.tmpl

@@ -6,7 +6,7 @@
       "npm": "@ai-sdk/openai-compatible",
       "name": "FabriX",
       "options": {
-        "baseURL": "http://127.0.0.1:${BACKEND_PORT}/api/ito",
+        "baseURL": "http://${BACKEND_HOST}:${BACKEND_PORT}/api/ito",
         "apiKey": "${AAF_GATEWAY_KEY}"
       },
       "models": ${AAF_FABRIX_MODELS_JSON}
@@ -18,7 +18,7 @@
   "mcp": {
     "sap-icf": {
       "type": "remote",
-      "url": "http://127.0.0.1:${MCP_PORT}/mcp",
+      "url": "http://${MCP_HOST}:${MCP_PORT}/mcp",
       "headers": { "Authorization": "Bearer ${MCP_API_KEY}" },
       "enabled": ${SAP_MCP_ENABLED}
     }