Set default path.

TODO.md

@@ -1,10 +1,16 @@
-# Cleanups
+# UI Sync
 
 - Parallelize tool-use execution in `run_turn` -- requires refactoring `Orchestrator` to use `&self` + interior mutability (`Arc<Mutex<...>>` around `event_tx`, `action_rx`, `history`) so multiple futures can borrow self simultaneously via `futures::future::join_all`.
 
-- Move keyboard/event reads in the TUI to a separate thread or async/io loop
 - Keep UI and orchestrator in sync (i.e. messages display out of order if you queue up many.)
+- `:clear` clears TUI state immediately but sends `ClearHistory` to orchestrator async. A mid-stream response can ghost back in after clear. Need synchronization (e.g. clear on `TurnComplete`, or have orchestrator ack the clear).
+
+# Scroll
+
 - `update_scroll` auto-follows in Insert mode, yanking viewport to bottom on mode switch. Only auto-follow when new content arrives (in `drain_ui_events`), not every frame.
 - `G` sets scroll to `u16::MAX` and relies on `update_scroll` clamping. Compute actual max_scroll inline, or document the contract that `update_scroll` must always run before render.
-- `:clear` clears TUI state immediately but sends `ClearHistory` to orchestrator async. A mid-stream response can ghost back in after clear. Need synchronization (e.g. clear on `TurnComplete`, or have orchestrator ack the clear).
-- Command overlay width: `(out.width / 2).max(80)` makes overlay full-bleed on 80-col terminals. Consider `.max(40)` or a different minimum.
+
+# Cleanups
+
+- Move keyboard/event reads in the TUI to a separate thread or async/io loop
+- When a permission is denied, output a useful tools message to the agent (i.e. searching the internet is not enabled).

src/main.rs

@@ -12,7 +12,7 @@ use anyhow::Context;
 /// Run skate against a project directory.
 ///
 /// ```text
-/// Usage: skate --project-dir <path> [--yolo]
+/// Usage: skate [--project-dir <path>] [--yolo]
 /// ```
 ///
 /// `ANTHROPIC_API_KEY` must be set in the environment.
@@ -35,7 +35,8 @@ struct Cli {
 
 /// Parse `argv` into [`Cli`].
 ///
-/// Accepts `--project-dir <path>` (required) and `--yolo` (optional).
+/// Accepts `--project-dir <path>` (optional, defaults to current directory)
+/// and `--yolo` (optional).
 fn parse_cli() -> anyhow::Result<Cli> {
     let mut project_dir: Option<PathBuf> = None;
     let mut yolo = false;
@@ -56,6 +57,9 @@ fn parse_cli() -> anyhow::Result<Cli> {
         }
     }
 
-    let project_dir = project_dir.context("Usage: skate --project-dir <path> [--yolo]")?;
+    let project_dir = match project_dir {
+        Some(p) => p,
+        None => std::env::current_dir().context("failed to determine current directory")?,
+    };
     Ok(Cli { project_dir, yolo })
 }