feat: support MCP elicitation and rebuild release

fixtures/gitea-workflow/mcp-thread-config.json

@@ -0,0 +1,16 @@
+{
+  "cwd": "/var/lib/ccweb/workspaces/default/acme/widget",
+  "mcpServer": {
+    "name": "gitea",
+    "command": "gitea-mcp",
+    "args": ["-t", "stdio", "-H", "https://gitea.example"],
+    "env": {"GITEA_ACCESS_TOKEN": "secret-ref:gitea-bot-token"}
+  },
+  "collaborationMode": {
+    "settings": {
+      "model": "configured-model",
+      "reasoning_effort": "medium",
+      "developer_instructions": "只在授权工作区内操作并回帖"
+    }
+  }
+}