MCP: add core tools, annotations and resources

Add strict tool keys, resource reads and panic recovery with regression coverage. Keep existing documented tools listed.

Co-Authored-By: OpenAI Codex <noreply@openai.com>

docs/agents.md

@@ -97,6 +97,11 @@ may be absent from the last checkpoint.
 | `script_ui {action?, window?, widget?, value?, result?}` | Drive ScriptUI windows that scripts opened: `list` (default) the open windows, `get` a window's control tree, `click` a button / checkbox / radio button, `set` text, a slider or a list item, `close` a window (`result`: what a dialog's `show()` returns, default 2 = Cancel). |
 | `batch {steps: [{command, params}], label?, atomic?}` | Several commands in one call and one undo step (`engine.batch`); `"$N.key"` in a param is step N's result (`"$1.layer"`). A failing step rolls the batch back and names the step. |
 | *(bridge)* `screenshot {panel?, id?, max_side?, path?}`, `ui_inspect`, `ui_elements {prefix?}`, `ui_click`, `ui_drag`, `ui_key`, `ui_type`, `ui_set`, `control {method, params}` | Look at and operate the live window. |
+| `command_list` | List commands (same arguments as `list_commands`). |
+| `command_run {id, params?}` | Run a command. |
+| `command_batch {steps, stop_on_error?}` | Run commands in order with per-step results; each edit has its own undo step. |
+| `doc_inspect` | Project overview and active composition. |
+| `render_preview` | Render a PNG without writing a file (`comp`, `time`, `max_side`, `transparent`). |
 
 Layers are referenced by id (from `get_comp`), `"#n"` (1-based index from the top) or name. Comps are
 referenced by id or name, and default to the active comp. Property paths come from `get_layer`, for