chore: update OpenAPI spec from monorepo (#722)

Co-authored-by: OpenRouter SDK Bot <sdk-bot@openrouter.ai>

Author: openrouter-docs-sync[bot]

.speakeasy/in.openapi.yaml

@@ -27520,6 +27520,16 @@ paths:
               schema:
                 $ref: '#/components/schemas/NotFoundResponse'
           description: 'Not Found - Resource does not exist'
+        '413':
+          content:
+            application/json:
+              example:
+                error:
+                  code: 413
+                  message: 'Request payload too large'
+              schema:
+                $ref: '#/components/schemas/PayloadTooLargeResponse'
+          description: 'Payload Too Large - Request payload exceeds size limits'
         '429':
           content:
             application/json:
@@ -27694,6 +27704,16 @@ paths:
               schema:
                 $ref: '#/components/schemas/NotFoundResponse'
           description: 'Not Found - Resource does not exist'
+        '413':
+          content:
+            application/json:
+              example:
+                error:
+                  code: 413
+                  message: 'Request payload too large'
+              schema:
+                $ref: '#/components/schemas/PayloadTooLargeResponse'
+          description: 'Payload Too Large - Request payload exceeds size limits'
         '429':
           content:
             application/json:
@@ -37799,6 +37819,16 @@ paths:
               schema:
                 $ref: '#/components/schemas/NotFoundResponse'
           description: 'Not Found - Resource does not exist'
+        '413':
+          content:
+            application/json:
+              example:
+                error:
+                  code: 413
+                  message: 'Request payload too large'
+              schema:
+                $ref: '#/components/schemas/PayloadTooLargeResponse'
+          description: 'Payload Too Large - Request payload exceeds size limits'
         '429':
           content:
             application/json:
@@ -38614,6 +38644,16 @@ paths:
               schema:
                 $ref: '#/components/schemas/NotFoundResponse'
           description: 'Not Found - Resource does not exist'
+        '413':
+          content:
+            application/json:
+              example:
+                error:
+                  code: 413
+                  message: 'Request payload too large'
+              schema:
+                $ref: '#/components/schemas/PayloadTooLargeResponse'
+          description: 'Payload Too Large - Request payload exceeds size limits'
         '429':
           content:
             application/json: