游戏生产流程SOP补充错误重试口径

阶段工具、命令或验证失败时最多重试 3 次，串行、同一阶段同一输入，不得并行绕路、跳到后续阶段或用占位物顶替
3 次尝试全部失败后才停止并把失败原因告诉用户：失败阶段、报错工具或命令、原始错误、仍然缺失的产物
未通过三轮重试的阶段不算完成，缺失产物不得报成已交付
同步 agc-skills manifest 内容指纹

apps/ai-game-creator-shell/src-tauri/resources/agc-skills/agc-game-production-workflow/SKILL.md

@@ -19,8 +19,14 @@ Use this Skill as the top-level SOP for a new game or a substantial game brief.
 
 ## Stage transitions
 
-Advance only when the current stage has its output: brief → inventory; inventory → art decision; art decision → usable registered assets or an explicit no-art decision; implementation → source references to those assets; build → playable entry; playtest → evidence; delivery → truthful report. If a tool fails, preserve its error and stop or repair at that stage instead of silently substituting a later-stage placeholder.
+Advance only when the current stage has its output: brief → inventory; inventory → art decision; art decision → usable registered assets or an explicit no-art decision; implementation → source references to those assets; build → playable entry; playtest → evidence; delivery → truthful report. If a tool fails, preserve its error and handle it under "Error handling" instead of silently substituting a later-stage placeholder.
 
 For a small edit to an existing game where the brief and suitable assets are unchanged, use the focused edit path and do not regenerate art. This exception does not apply to a new game or a substantial planning brief.
 
+## Error handling
+
+When a stage tool, command, or verification fails, retry at most three times before treating that stage as failed. Keep the retries serial and scoped to the same stage and the same input: a retry must not open a parallel path, skip ahead to a later stage, or substitute a placeholder for the missing output.
+
+Only after the third attempt also fails, stop and tell the user the failure reason — which stage failed, which tool or command reported the error, what the error says, and what is still missing. A stage whose three attempts never succeeded is not complete, and its missing output cannot be reported as delivered.
+
 Read the referenced specialist Skills for their detailed contracts: `agc-project-structure`, `taonier-art-assets`, `agc-web-game-development`, `agc-client-projection`, and `agc-browser-playtest`.

apps/ai-game-creator-shell/src-tauri/resources/agc-skills/manifest.json

@@ -1,6 +1,6 @@
 {
   "schemaVersion": "agc-skill-pack.v1",
-  "version": "2026-08-26.13",
+  "version": "2026-08-26.14",
   "skills": [
     {
       "name": "agc-game-production-workflow",
@@ -22,7 +22,7 @@
         "agents/openai.yaml",
         "references/workflow-contract.md"
       ],
-      "sha256": "91082fdff4123f1e1fcf930af433cbea51a8c9d26991678b19028b344ea49f39"
+      "sha256": "d9d8e7e0a6bc512e0b463e0e4bd77edee1cc57f4a6965c9553e0920e38985d5c"
     },
     {
       "name": "agc-project-structure",