fix(plugin): preserve marketplace package metadata

src/langbot/pkg/plugin/connector.py

@@ -206,10 +206,11 @@ class PluginRuntimeConnector(ManagedRuntimeConnector):
         self,
         file_bytes: bytes,
         task_context: taskmgr.TaskContext | None,
-    ) -> tuple[str | None, str | None]:
+    ) -> tuple[str | None, str | None, str | None]:
         """Extract plugin identity and dependency metadata from a plugin package."""
         plugin_author = None
         plugin_name = None
+        plugin_version = None
 
         try:
             with zipfile.ZipFile(io.BytesIO(file_bytes)) as zf:
@@ -218,6 +219,7 @@ class PluginRuntimeConnector(ManagedRuntimeConnector):
                     metadata = manifest.get('metadata', {})
                     plugin_author = metadata.get('author')
                     plugin_name = metadata.get('name')
+                    plugin_version = metadata.get('version')
                 except Exception:
                     pass
 
@@ -236,7 +238,7 @@ class PluginRuntimeConnector(ManagedRuntimeConnector):
         except Exception:
             pass
 
-        return plugin_author, plugin_name
+        return plugin_author, plugin_name, plugin_version
 
     async def _install_mcp_from_marketplace(
         self,
@@ -378,6 +380,7 @@ class PluginRuntimeConnector(ManagedRuntimeConnector):
     ):
         plugin_author = install_info.get('plugin_author')
         plugin_name = install_info.get('plugin_name')
+        plugin_file_transferred = False
 
         if install_source == PluginInstallSource.MARKETPLACE:
             # Handle marketplace plugin/mcp/skill installation
@@ -472,14 +475,18 @@ class PluginRuntimeConnector(ManagedRuntimeConnector):
                                         )
 
                                     file_bytes = download_resp.content
-                                    plugin_author, plugin_name = self._inspect_plugin_package(
+                                    plugin_author, plugin_name, plugin_version = self._inspect_plugin_package(
                                         file_bytes,
                                         task_context,
                                     )
                                     if task_context is not None and plugin_author and plugin_name:
                                         task_context.metadata['plugin_name'] = f'{plugin_author}/{plugin_name}'
+                                    if task_context is not None and plugin_version:
+                                        task_context.metadata['plugin_version'] = plugin_version
                                     file_key = await self.handler.send_file(file_bytes, 'lbpkg')
                                     install_info['plugin_file_key'] = file_key
+                                    install_source = PluginInstallSource.LOCAL
+                                    plugin_file_transferred = True
                                     self.ap.logger.info(f'Transfered file {file_key} to plugin runtime')
                                     # Continue to install via runtime
                                 else:
@@ -495,12 +502,14 @@ class PluginRuntimeConnector(ManagedRuntimeConnector):
                     mcp_resp.raise_for_status()
                     raise Exception(f'Failed to get MCP {plugin_author}/{plugin_name}')
 
-        if install_source == PluginInstallSource.LOCAL:
+        if install_source == PluginInstallSource.LOCAL and not plugin_file_transferred:
             # transfer file before install
             file_bytes = install_info['plugin_file']
-            plugin_author, plugin_name = self._inspect_plugin_package(file_bytes, task_context)
+            plugin_author, plugin_name, plugin_version = self._inspect_plugin_package(file_bytes, task_context)
             if task_context is not None and plugin_author and plugin_name:
                 task_context.metadata['plugin_name'] = f'{plugin_author}/{plugin_name}'
+            if task_context is not None and plugin_version:
+                task_context.metadata['plugin_version'] = plugin_version
             file_key = await self.handler.send_file(file_bytes, 'lbpkg')
             install_info['plugin_file_key'] = file_key
             del install_info['plugin_file']
@@ -537,9 +546,11 @@ class PluginRuntimeConnector(ManagedRuntimeConnector):
                                 task_context.metadata['download_speed'] = downloaded / elapsed if elapsed > 0 else 0
 
                     file_bytes = b''.join(chunks)
-                    plugin_author, plugin_name = self._inspect_plugin_package(file_bytes, task_context)
+                    plugin_author, plugin_name, plugin_version = self._inspect_plugin_package(file_bytes, task_context)
                     if task_context is not None and plugin_author and plugin_name:
                         task_context.metadata['plugin_name'] = f'{plugin_author}/{plugin_name}'
+                    if task_context is not None and plugin_version:
+                        task_context.metadata['plugin_version'] = plugin_version
                     file_key = await self.handler.send_file(file_bytes, 'lbpkg')
                     install_info['plugin_file_key'] = file_key
                     self.ap.logger.info(f'Transfered file {file_key} to plugin runtime')

tests/unit_tests/plugin/test_connector_pure.py

@@ -49,6 +49,30 @@ class TestExtractDepsMetadata:
         assert 'flask' in task_context.metadata['deps_list']
         assert 'numpy' in task_context.metadata['deps_list']
 
+    def test_extract_plugin_identity_includes_version(self):
+        """Extract plugin identity and version from manifest.yaml."""
+        connector = self._create_connector()
+
+        zip_buffer = io.BytesIO()
+        with zipfile.ZipFile(zip_buffer, 'w') as zf:
+            zf.writestr(
+                'manifest.yaml',
+                '\n'.join(
+                    [
+                        'metadata:',
+                        '  author: langbot-team',
+                        '  name: LangRAG',
+                        '  version: 0.1.8',
+                    ]
+                ),
+            )
+
+        assert connector._inspect_plugin_package(zip_buffer.getvalue(), None) == (
+            'langbot-team',
+            'LangRAG',
+            '0.1.8',
+        )
+
     def test_extract_deps_empty_requirements(self):
         """Handle empty requirements.txt."""
         connector = self._create_connector()