增加历史版本保存功能

.opencode/tools/skill_manager.ts

@@ -1,10 +1,11 @@
 import { tool } from "@opencode-ai/plugin";
 import { join, posix } from "node:path";
 
+import { config } from "../../src/config.js";
 import { ResultReferenceStore } from "../../src/results/store.js";
 import { ToolSessionContextStore } from "../../src/session/toolContextStore.js";
 import {
-  atomicWriteFile,
+  atomicWriteFileWithHistory,
   ensureDirectory,
   readTextFile,
 } from "../../src/utils/fileStore.js";
@@ -17,6 +18,7 @@ const initializePromise = Promise.all([
   toolContextStore.initialize(),
 ]);
 const SKILLS_ROOT_DIR = ".opencode/skills";
+const SKILLS_HISTORY_DIR = join(config.PERSISTENCE_HISTORY_DIR, "skills");
 const LEARNED_PATTERNS_MARKER = "## Learned Patterns";
 let writeQueue: Promise<void> = Promise.resolve();
 
@@ -118,7 +120,10 @@ const appendLearnedSkillPattern = async (skillPath: string, pattern: string) =>
       : `${current.trimEnd()}\n\n${LEARNED_PATTERNS_MARKER}\n- ${pattern}\n`;
 
     await ensureDirectory(join(SKILLS_ROOT_DIR, skillPath));
-    await atomicWriteFile(target, next);
+    await atomicWriteFileWithHistory(target, next, {
+      historyDir: SKILLS_HISTORY_DIR,
+      rootDir: SKILLS_ROOT_DIR,
+    });
     return { changed: true, target };
   });
 };