refactor: fold ack kit into skill

skills/ack/templates/tasks.template.yaml

@@ -0,0 +1,69 @@
+# 复制为 docs/ack/tasks.yaml，替换占位符。结构见 templates/tasks.schema.json。
+version: 1
+updatedAt: "<YYYY-MM-DDTHH:mm:ss+TZ>"
+source: "Coordinator (PM) Agent"
+ackVersion: "<接入时的 ack skill 版本>"
+project:
+  name: "<project_name>"
+  repoPath: "<repo_path>"
+  baseUrl: "<base_url>"
+  devWorktree: "<dev_worktree>"
+  overlayFile: "docs/ack/project.md"
+
+summary:
+  verified: []
+  open: []
+  failedRetest: []
+  leftovers: []
+
+tasks:
+  - id: "BUG-001"
+    type: "bug"
+    title: "<short title>"
+    priority: "P0"
+    status: "open"
+    assignee: "developer"
+    component: "<source file or module>"
+    specRefs:
+      - "<docs/spec.md#section>"
+    testRefs:
+      - "<tests/browser/cases/01-case.md>"
+
+    description: >
+      <What is wrong, in user-visible terms.>
+
+    stepsToReproduce:
+      - "<step 1>"
+      - "<step 2>"
+
+    expected: >
+      <Expected behavior.>
+
+    actual: >
+      <Actual behavior observed by Test.>
+
+    evidence:
+      browser: "<snapshot text, screenshot path, or UI finding>"
+      api: "<curl result or API mismatch>"
+      logs: "<relevant log line if any>"
+
+    verification:
+      commands:
+        - "<unit/build command>"
+        - "<browser/API smoke command>"
+      browser:
+        page: "<page path>"
+        checks:
+          - "<visible text or interaction expected>"
+
+    dispatch:
+      taskId: null
+      dispatchId: null
+      worker: null
+      rounds: []
+
+    resolution:
+      fixedBy: null
+      verifiedBy: null
+      verifiedAt: null
+      leftoverReason: null