fix(core): honor the -1 sentinels for max_turns and max_tokens (#56)

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

packages/docs/content/configuration.en.md

@@ -93,8 +93,8 @@ Edit this file via the CLI (`penguin config model …`) or the Web Models page
 | `description` | — | Agent description |
 | `version` | `1` | Agent State version (a natural number), incremented on each successful optimization |
 | `system_prompt` | built-in template | Required; the only template with placeholder substitution |
-| `max_turns` | `100` | Maximum LLM turns per Task |
-| `model.max_tokens` | `32000` | Output Token limit per Request |
+| `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.timeoutMs` | `120000` | Per-Request timeout (milliseconds) |
 | `compaction.max_context_length` | `128000` | Context Token threshold that triggers compaction |

packages/docs/content/configuration.zh.md

@@ -93,8 +93,8 @@ output = 0.857143
 | `description` | — | Agent 描述 |
 | `version` | `1` | Agent State 版本号（自然数），每次成功优化自增 |
 | `system_prompt` | 内置模板 | 必填；唯一进行占位符替换的模板 |
-| `max_turns` | `100` | 单个 Task 的最大 LLM 轮数 |
-| `model.max_tokens` | `32000` | 单次输出 Token 上限 |
+| `max_turns` | `100` | 单个 Task 的最大 LLM 轮数（-1 不限制） |
+| `model.max_tokens` | `32000` | 单次输出 Token 上限（-1 不设上限，用服务商默认） |
 | `model.thinking_level` | `medium` | `none` / `low` / `medium` / `high` / `xhigh` |
 | `model.timeoutMs` | `120000` | 单次 Request 超时（毫秒） |
 | `compaction.max_context_length` | `128000` | 触发压缩的上下文 Token 阈值 |