fix(backend/copilot): regenerate openapi.json with TaskDecompositionResponse schema

The API schema was missing DecompositionStepModel and TaskDecompositionResponse
after the merge. Regenerated with export-api-schema and formatted with prettier.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

autogpt_platform/frontend/src/app/api/openapi.json

@@ -1163,7 +1163,8 @@
                     {
                       "$ref": "#/components/schemas/MCPToolsDiscoveredResponse"
                     },
-                    { "$ref": "#/components/schemas/MCPToolOutputResponse" }
+                    { "$ref": "#/components/schemas/MCPToolOutputResponse" },
+                    { "$ref": "#/components/schemas/TaskDecompositionResponse" }
                   ],
                   "title": "Response Getv2[Dummy] Tool Response Type Export For Codegen"
                 }
@@ -9212,6 +9213,40 @@
         "enum": ["TOP_UP", "USAGE", "GRANT", "REFUND", "CARD_CHECK"],
         "title": "CreditTransactionType"
       },
+      "DecompositionStepModel": {
+        "properties": {
+          "step_id": {
+            "type": "string",
+            "title": "Step Id",
+            "description": "Unique step identifier, e.g. 'step_1'"
+          },
+          "description": {
+            "type": "string",
+            "title": "Description",
+            "description": "Human-readable step description"
+          },
+          "action": {
+            "type": "string",
+            "title": "Action",
+            "description": "Action type: 'add_block', 'connect_blocks', 'configure', etc."
+          },
+          "block_name": {
+            "anyOf": [{ "type": "string" }, { "type": "null" }],
+            "title": "Block Name",
+            "description": "Block being added, if applicable"
+          },
+          "status": {
+            "type": "string",
+            "title": "Status",
+            "description": "Step status: pending, in_progress, completed, failed",
+            "default": "pending"
+          }
+        },
+        "type": "object",
+        "required": ["step_id", "description", "action"],
+        "title": "DecompositionStepModel",
+        "description": "A single step in a decomposed agent-building plan."
+      },
       "DeleteFileResponse": {
         "properties": { "deleted": { "type": "boolean", "title": "Deleted" } },
         "type": "object",
@@ -13722,6 +13757,44 @@
         "required": ["recent_searches", "providers", "top_blocks"],
         "title": "SuggestionsResponse"
       },
+      "TaskDecompositionResponse": {
+        "properties": {
+          "type": {
+            "$ref": "#/components/schemas/ResponseType",
+            "default": "task_decomposition"
+          },
+          "message": { "type": "string", "title": "Message" },
+          "session_id": {
+            "anyOf": [{ "type": "string" }, { "type": "null" }],
+            "title": "Session Id"
+          },
+          "goal": {
+            "type": "string",
+            "title": "Goal",
+            "description": "The original user goal"
+          },
+          "steps": {
+            "items": { "$ref": "#/components/schemas/DecompositionStepModel" },
+            "type": "array",
+            "title": "Steps"
+          },
+          "step_count": {
+            "type": "integer",
+            "title": "Step Count",
+            "description": "Number of steps (auto-derived from steps list)",
+            "default": 0
+          },
+          "requires_approval": {
+            "type": "boolean",
+            "title": "Requires Approval",
+            "default": true
+          }
+        },
+        "type": "object",
+        "required": ["message", "goal", "steps"],
+        "title": "TaskDecompositionResponse",
+        "description": "Response for decompose_goal tool — shows the plan to the user."
+      },
       "TimezoneResponse": {
         "properties": {
           "timezone": {