docs: document in-progress pretty tool lines

AGENTS.md

@@ -113,6 +113,7 @@ Click app + readline REPL. Entry: `plyngent` / `python -m plyngent`.
 - `/btw` side questions: forked session; main transcript/DB untouched. `--tools=read` (default) exposes only `READ_ONLY` tools under `read_only_context()` (fetch=GET) with the main session view; `--tools=no` off; `--tools=full` whole-registry clone with fresh session. Tools off: default falls back to no tools; explicit `read`/`full` errors.
 - Explicit `/resume` or `--session` from another workspace prompts: **keep** / **update** / **abort**.
 - Failed/cancelled turns: user kept; **committed tool rounds kept** (side effects not re-run on `/retry`); only unfinished assistant rolled back; Ctrl+C cancels; TTY confirms off-loop; auto-retry 10s/20s/30s then `/retry`.
+- Pretty tool lines: known tools (`read_file`, `run_argv`, `grep_files`, …) print their `* Verb 'target' ` prefix as the call starts and append the outcome (`L1-4 (done)`, `(exit code 0)`) when the result lands, so a blocking tool stays visible while it runs. Interactive TTY only (`interactive_terminal()`): piped/plain output and `--verbose` keep whole lines / `[tool ok]`. A second call before the first result (parallel batch) erases the open prefix and falls back to whole lines.
 - **`plyngent providers`**, **`config path|edit`**. Config open: `$VISUAL`/`$EDITOR` (wait), else system default (`xdg-open` / `open` / `startfile`, non-blocking). `/edit` stays blocking-only. No providers → optional edit then reload when waited.
 - Tools default on; workspace defaults to cwd; `--max-rounds` default 32. Readline history under platformdirs (`repl_history`). PTY: `close_all` on chat exit.
 

README.md

@@ -225,6 +225,8 @@ Sessions resume the **most recently updated** session for the current workspace
 
 When a tool-loop or PTY limit is hit, the prompt accepts `y` (continue once), `n` (stop), or `yyy` — **stop asking for the rest of this turn** (the next user turn prompts again). `--auto-continue` / `[agent] auto_continue_limits = true` skip the prompt for every turn.
 
+Tool calls show progress as they run: known tools (`read_file`, `run_argv`, `grep_files`, …) print a `* Read 'src/x.py' ` prefix the moment the call starts, and the outcome (`L1-80 (done)`, `(exit code 0)`) is appended once the result lands. Piped output and `--verbose` print the finished line as before.
+
 ### One-shot (scripts / CI)
 
 ```bash