Fix publish dialog sending dict instead of YAML string

The publish_tool() API expects a YAML config string, but the dialog
was passing a dict directly, causing a 500 error on the server.

- Update PublishWorker to accept config_yaml string and readme
- Build complete tool config from Tool.to_dict()
- Convert to YAML string before sending
- Also include README.md if it exists in tool directory

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/cmdforge/gui/dialogs/publish_dialog.py

@@ -17,9 +17,10 @@ class PublishWorker(QThread):
     success = Signal(dict)
     error = Signal(str)
 
-    def __init__(self, tool_data: dict):
+    def __init__(self, config_yaml: str, readme: str = ""):
         super().__init__()
-        self.tool_data = tool_data
+        self.config_yaml = config_yaml
+        self.readme = readme
 
     def run(self):
         try:
@@ -27,7 +28,7 @@ class PublishWorker(QThread):
             client = RegistryClient()
             client.token = config.registry.token
 
-            result = client.publish_tool(self.tool_data)
+            result = client.publish_tool(self.config_yaml, self.readme)
             self.success.emit(result)
         except Exception as e:
             self.error.emit(str(e))
@@ -127,6 +128,8 @@ class PublishDialog(QDialog):
 
     def _publish(self):
         """Publish the tool."""
+        import yaml
+
         version = self.version_input.text().strip()
         if not version:
             QMessageBox.warning(self, "Validation", "Version is required")
@@ -140,22 +143,34 @@ class PublishDialog(QDialog):
         category = self.category_combo.currentText()
         tags = [t.strip() for t in self.tags_input.text().split(",") if t.strip()]
 
-        # Build tool data for publishing
-        tool_data = {
-            "name": self._tool.name,
-            "version": version,
-            "description": description,
-            "category": category,
-            "tags": tags,
-            "definition": self._tool.to_dict() if hasattr(self._tool, 'to_dict') else {}
-        }
+        # Build complete tool config from the Tool object
+        tool_config = self._tool.to_dict() if hasattr(self._tool, 'to_dict') else {}
+
+        # Update with publish dialog values
+        tool_config["name"] = self._tool.name
+        tool_config["version"] = version
+        tool_config["description"] = description
+        tool_config["category"] = category
+        if tags:
+            tool_config["tags"] = tags
+
+        # Convert to YAML string
+        config_yaml = yaml.dump(tool_config, default_flow_style=False, sort_keys=False)
+
+        # Get README if it exists
+        readme = ""
+        tool_dir = self._tool.path.parent if hasattr(self._tool, 'path') and self._tool.path else None
+        if tool_dir:
+            readme_path = tool_dir / "README.md"
+            if readme_path.exists():
+                readme = readme_path.read_text()
 
         self.btn_publish.setEnabled(False)
         self.btn_cancel.setEnabled(False)
         self.progress.show()
         self.status_label.setText("Publishing...")
 
-        self._worker = PublishWorker(tool_data)
+        self._worker = PublishWorker(config_yaml, readme)
         self._worker.success.connect(self._on_success)
         self._worker.error.connect(self._on_error)
         self._worker.start()