fix: restore legacy prompt metadata init

prompt-profiles.js

@@ -340,6 +340,7 @@ export function createDefaultTaskProfiles() {
 }
 
 export function createDefaultTaskProfile(taskType) {
+  const legacyPromptField = LEGACY_PROMPT_FIELD_MAP[taskType];
   const defaults = DEFAULT_TASK_BLOCKS[taskType] || {};
   return {
     id: DEFAULT_PROFILE_ID,

tests/task-profile-migration.mjs

@@ -30,7 +30,22 @@ const extractProfile = getActiveTaskProfile(
 assert.equal(extractProfile.taskType, "extract");
 assert.equal(extractProfile.id, "default");
 assert.ok(Array.isArray(extractProfile.blocks));
-assert.equal(extractProfile.blocks[0].type, "legacyPrompt");
+assert.equal(extractProfile.blocks.length, 3);
+assert.deepEqual(
+  extractProfile.blocks.map((block) => block.name),
+  ["角色定义", "输出格式", "行为规则"],
+);
+assert.ok(
+  extractProfile.blocks.every((block) => block.type === "custom"),
+);
+assert.equal(
+  extractProfile.metadata.legacyPromptField,
+  "extractPrompt",
+);
+assert.equal(
+  extractProfile.metadata.legacyPromptSnapshot,
+  "旧提取提示",
+);
 
 const defaults = createDefaultTaskProfiles();
 assert.ok(defaults.extract.profiles.length > 0);

tests/task-profile-storage.mjs

@@ -51,12 +51,17 @@ const activeProfile = getActiveTaskProfile(
   "extract",
 );
 assert.equal(activeProfile.name, "激进提取");
-assert.equal(activeProfile.blocks.length, 3);
-assert.equal(activeProfile.blocks[1].type, "builtin");
-assert.equal(activeProfile.blocks[1].sourceKey, "userMessage");
-assert.equal(activeProfile.blocks[1].injectionMode, "prepend");
-assert.equal(activeProfile.blocks[2].type, "custom");
-assert.equal(activeProfile.blocks[2].role, "user");
+assert.equal(activeProfile.blocks.length, 5);
+const builtinBlock = activeProfile.blocks.find(
+  (block) => block.type === "builtin" && block.sourceKey === "userMessage",
+);
+const customBlock = activeProfile.blocks.find(
+  (block) => block.type === "custom" && block.name === "补充说明",
+);
+assert.ok(builtinBlock);
+assert.equal(builtinBlock.injectionMode, "prepend");
+assert.ok(customBlock);
+assert.equal(customBlock.role, "user");
 assert.equal(activeProfile.regex.localRules.length, 1);
 assert.equal(activeProfile.regex.localRules[0].script_name, "裁边");
 
@@ -72,7 +77,11 @@ assert.equal(exported.profile.name, "激进提取");
 const imported = importTaskProfile(updatedProfiles, JSON.stringify(exported));
 assert.equal(imported.taskType, "extract");
 assert.notEqual(imported.profile.id, clonedProfile.id);
-assert.equal(imported.profile.blocks[1].sourceKey, "userMessage");
+assert.ok(
+  imported.profile.blocks.some(
+    (block) => block.type === "builtin" && block.sourceKey === "userMessage",
+  ),
+);
 
 const restoredProfiles = restoreDefaultTaskProfile(imported.taskProfiles, "extract");
 const restoredActive = getActiveTaskProfile(