chore: restore .gemini conductor agent files

.gemini/tools/run_powershell.json

@@ -0,0 +1,17 @@
+{
+  "name": "run_powershell",
+  "description": "Run a PowerShell script within the project base_dir. Use this to create, edit, rename, or delete files and directories. stdout and stderr are returned to you as the result.",
+  "parameters": {
+    "type": "object",
+    "properties": {
+      "script": {
+        "type": "string",
+        "description": "The PowerShell script to execute."
+      }
+    },
+    "required": [
+      "script"
+    ]
+  },
+  "command": "python scripts/tool_call.py run_powershell"
+}