Preserve partial creation replies on stream failure

docs/technical/SPACETIMEDB_TABLE_CATALOG.md

@@ -29,6 +29,7 @@ spacetime sql <db> "SELECT * FROM custom_world_gallery_entry"
 | 世界创作 | `custom_world_profile`, `custom_world_session`, `custom_world_agent_session`, `custom_world_agent_message`, `custom_world_agent_operation`, `custom_world_draft_card`, `custom_world_gallery_entry` |
 | 拼图 | `puzzle_agent_session`, `puzzle_agent_message`, `puzzle_work_profile`, `puzzle_event`, `puzzle_runtime_run`, `puzzle_leaderboard_entry` |
 | 抓大鹅 Match3D | `match3d_agent_session`, `match3d_agent_message`, `match3d_work_profile`, `match3d_runtime_run` |
+| 方洞挑战 | `square_hole_agent_session`, `square_hole_agent_message`, `square_hole_work_profile`, `square_hole_runtime_run` |
 | 大鱼吃小鱼 | `big_fish_creation_session`, `big_fish_agent_message`, `big_fish_asset_slot`, `big_fish_event`, `big_fish_runtime_run` |
 | 资产 | `asset_object`, `asset_entity_binding`, `asset_event` |
 | AI 任务 | `ai_task`, `ai_task_stage`, `ai_text_chunk`, `ai_result_reference`, `ai_task_event` |
@@ -669,6 +670,53 @@ SELECT * FROM match3d_runtime_run WHERE owner_user_id = '<user_id>' ORDER BY upd
 SELECT * FROM match3d_runtime_run WHERE profile_id = '<profile_id>';
 ```
 
+## 方洞挑战表
+
+### `square_hole_agent_session`
+
+- 作用：方洞挑战创作 Agent 会话表，保存种子、配置 JSON、草稿 JSON 和发布 profile 指针。
+- 结构：`session_id PK: String`, `owner_user_id: String`, `seed_text: String`, `current_turn: u32`, `progress_percent: u32`, `stage: String`, `config_json: String`, `draft_json: String`, `last_assistant_reply: String`, `published_profile_id: String`, `created_at: Timestamp`, `updated_at: Timestamp`。
+- 索引：`owner_user_id`。
+
+```sql
+SELECT * FROM square_hole_agent_session WHERE session_id = '<session_id>';
+SELECT * FROM square_hole_agent_session WHERE owner_user_id = '<user_id>' ORDER BY updated_at DESC;
+```
+
+### `square_hole_agent_message`
+
+- 作用：方洞挑战创作 Agent 消息流水。
+- 结构：`message_id PK: String`, `session_id: String`, `role: String`, `kind: String`, `text: String`, `created_at: Timestamp`。
+- 索引：`session_id`。
+
+```sql
+SELECT * FROM square_hole_agent_message WHERE session_id = '<session_id>' ORDER BY created_at ASC;
+```
+
+### `square_hole_work_profile`
+
+- 作用：方洞挑战作品主表，保存作品基础信息、反直觉规则、配置、发布状态和游玩次数。
+- 结构：`profile_id PK: String`, `work_id: String`, `owner_user_id: String`, `source_session_id: String`, `author_display_name: String`, `game_name: String`, `theme_text: String`, `twist_rule: String`, `summary_text: String`, `tags_json: String`, `cover_image_src: String`, `shape_count: u32`, `difficulty: u32`, `config_json: String`, `publication_status: String`, `play_count: u32`, `updated_at: Timestamp`, `published_at: Option<Timestamp>`。
+- 索引：`owner_user_id`, `publication_status`。
+
+```sql
+SELECT * FROM square_hole_work_profile WHERE profile_id = '<profile_id>';
+SELECT * FROM square_hole_work_profile WHERE owner_user_id = '<user_id>' ORDER BY updated_at DESC;
+SELECT * FROM square_hole_work_profile WHERE publication_status = 'Published';
+```
+
+### `square_hole_runtime_run`
+
+- 作用：方洞挑战单局运行态表，保存后端权威快照、快照版本、胜负状态和成绩基础字段。
+- 结构：`run_id PK: String`, `owner_user_id: String`, `profile_id: String`, `status: String`, `snapshot_version: u64`, `started_at_ms: i64`, `duration_limit_ms: i64`, `finished_at_ms: i64`, `elapsed_ms: i64`, `total_shape_count: u32`, `completed_shape_count: u32`, `score: u32`, `snapshot_json: String`, `created_at: Timestamp`, `updated_at: Timestamp`。
+- 索引：`owner_user_id`, `profile_id`。
+
+```sql
+SELECT * FROM square_hole_runtime_run WHERE run_id = '<run_id>';
+SELECT * FROM square_hole_runtime_run WHERE owner_user_id = '<user_id>' ORDER BY updated_at DESC;
+SELECT * FROM square_hole_runtime_run WHERE profile_id = '<profile_id>';
+```
+
 ## 大鱼吃小鱼表
 
 ### `big_fish_creation_session`