Handoff-style /model switch command and per-turn thinking level (#64)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

packages/docs/content/configuration.en.md

@@ -95,7 +95,7 @@ Edit this file via the CLI (`penguin config model …`) or the Web Models page
 | `system_prompt` | built-in template | Required; the only template with placeholder substitution |
 | `max_turns` | `100` | Maximum LLM turns per Task (-1 removes the cap) |
 | `model.max_tokens` | `32000` | Output Token limit per Request (-1 = no cap, provider default) |
-| `model.thinking_level` | `medium` | `none` / `low` / `medium` / `high` / `xhigh` |
+| `model.thinking_level` | `medium` | `none` / `low` / `medium` / `high` / `xhigh`; the session default, overridable per-Task |
 | `model.timeoutMs` | `120000` | Per-Request timeout (milliseconds) |
 | `compaction.max_context_length` | `128000` | Context Token threshold that triggers compaction |
 | `compaction.max_session_turns` | `-1` | Cumulative Session turn threshold (`-1` = unlimited) |