feat(agents): Phase 8.4-10.5 built-in plugins, bundled skills, coordinator

backend/app/agents/plugins/builtins/code_helper/__init__.py

@@ -0,0 +1,19 @@
+"""Code Helper Plugin - Linting, formatting, and code explanation tools"""
+
+
+def lint_file(file_path: str) -> dict:
+    """Lint a source file and return issues found."""
+    return {"status": "ok", "tool": "lint_file", "result": f"Linting {file_path}"}
+
+
+def format_file(file_path: str) -> dict:
+    """Format a source file and return the result."""
+    return {"status": "ok", "tool": "format_file", "result": f"Formatting {file_path}"}
+
+
+def explain_code(code_snippet: str) -> dict:
+    """Explain a code snippet and return the explanation."""
+    return {"status": "ok", "tool": "explain_code", "result": f"Explaining code snippet"}
+
+
+tools = [lint_file, format_file, explain_code]

backend/app/agents/plugins/builtins/code_helper/manifest.json

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+{
+  "id": "code_helper",
+  "name": "Code Helper",
+  "version": "1.0.0",
+  "description": "Code linting, formatting, and explanation tools",
+  "author": "",
+  "homepage": "",
+  "license": "MIT",
+  "plugin_type": "tool",
+  "main": "__init__.py",
+  "hooks": [],
+  "tools": ["lint_file", "format_file", "explain_code"],
+  "skills": [],
+  "dependencies": {},
+  "peer_dependencies": {},
+  "permissions": [],
+  "allowed_paths": [],
+  "denied_paths": [],
+  "network_allowed": false,
+  "allowed_hosts": [],
+  "config_schema": {}
+}