refactor: wire Open WebUI → Kiro Gateway + mcpo, add Reltio Forge spec

- docker-compose: 3 services (gateway, mcpo, webui) with proper wiring
- Open WebUI connects to Kiro Gateway for LLM, mcpo for MCP tools
- TOOL_SERVER_CONNECTIONS auto-discovers Jira, Aha, Context7
- Simplified mcporter.json (env vars from container, not JSON)
- env.example consolidated with all keys
- SETUP.md rewritten with architecture diagram
- Pipelines deprecated (mcpo replaces custom Python shims)
- Added docs/reltio-forge.md

config/mcporter.json

@@ -10,11 +10,7 @@
     },
     "aha": {
       "command": "npx",
-      "args": ["-y", "aha-mcp@latest"],
-      "env": {
-        "AHA_DOMAIN": "${AHA_DOMAIN}",
-        "AHA_API_TOKEN": "${AHA_API_KEY}"
-      }
+      "args": ["-y", "aha-mcp@latest"]
     }
   }
 }