fix: 列表/诊断返回完整ID，详情工具支持前缀匹配兜底

- _t_list_tasks 返回完整ID（不再截断8位）
- _t_list_questions 返回完整ID（去掉Q前缀+截断）
- _t_list_deliverables 返回完整ID
- _t_diagnose_project 列出失败/待执行任务完整ID
- _t_task_detail/_t_answer_question/_t_view_deliverable 支持8位前缀匹配兜底

pipeline_service/agent_loop_v2.py

@@ -686,7 +686,7 @@ class AgentExecutor:
             icon = icons.get(st, "❓")
             title = (getattr(r, 'title', '') or '')[:60]
             role = getattr(r, 'role', '')
-            tid = getattr(r, 'id', '')[:8]
+            tid = getattr(r, 'id', '')
             lines.append(f"| {icon} {st} | {title} | {role} | {tid} |")
         return "\n".join(lines)
 
@@ -697,6 +697,11 @@ class AgentExecutor:
 
         recs = await sor.sqlExe(
             "SELECT * FROM pipeline_tasks WHERE id=${tid}$", {"tid": tid})
+        if not recs and len(tid) >= 6:
+            # 前缀匹配兜底（兼容 8 位截断 ID）
+            recs = await sor.sqlExe(
+                "SELECT * FROM pipeline_tasks WHERE id LIKE ${prefix}$ LIMIT 1",
+                {"prefix": tid + "%"})
         if not recs:
             return f"任务不存在: {tid}"
 
@@ -767,14 +772,32 @@ class AgentExecutor:
         fc = getattr(failed[0], "c", 0) if failed else 0
         vc = getattr(review[0], "c", 0) if review else 0
 
-        return (
-            f"项目诊断:\n"
-            f"- 待执行: {sc}\n"
-            f"- 运行中: {rc}\n"
-            f"- 待审核: {vc}\n"
-            f"- 失败: {fc}\n"
-            f"- 待回答问题: {qc}\n"
-        )
+        lines = [
+            "项目诊断:",
+            f"- 待执行: {sc}",
+            f"- 运行中: {rc}",
+            f"- 待审核: {vc}",
+            f"- 失败: {fc}",
+            f"- 待回答问题: {qc}",
+        ]
+
+        # 列出失败/待执行任务完整 ID，方便 agent 直接 task_detail
+        if fc:
+            failed_rows = await sor.sqlExe(
+                "SELECT id, title, role FROM pipeline_tasks WHERE tenant_id=${pid}$ AND state='failed' ORDER BY created_at DESC LIMIT 10",
+                {"pid": pid})
+            lines.append("失败任务:")
+            for fr in (failed_rows or []):
+                lines.append(f"  - [{getattr(fr, 'role', '?')}] {getattr(fr, 'title', '')} (id={getattr(fr, 'id', '')})")
+        if sc:
+            submitted_rows = await sor.sqlExe(
+                "SELECT id, title, role FROM pipeline_tasks WHERE tenant_id=${pid}$ AND state='submitted' ORDER BY created_at ASC LIMIT 10",
+                {"pid": pid})
+            lines.append("待执行任务:")
+            for sr in (submitted_rows or []):
+                lines.append(f"  - [{getattr(sr, 'role', '?')}] {getattr(sr, 'title', '')} (id={getattr(sr, 'id', '')})")
+
+        return "\n".join(lines)
 
     async def _t_list_deliverables(self, sor, p, pid):
         if not pid:
@@ -793,7 +816,7 @@ class AgentExecutor:
         for r in recs:
             lines.append(
                 f"- [{getattr(r, 'review_status', '?')}] {getattr(r, 'title', '')} "
-                f"({getattr(r, 'deliverable_type', '')})"
+                f"({getattr(r, 'deliverable_type', '')}) id={getattr(r, 'id', '')}"
             )
         return "\n".join(lines)
 
@@ -804,6 +827,10 @@ class AgentExecutor:
 
         recs = await sor.sqlExe(
             "SELECT * FROM pipeline_deliverables WHERE id=${did}$", {"did": did})
+        if not recs and len(did) >= 6:
+            recs = await sor.sqlExe(
+                "SELECT * FROM pipeline_deliverables WHERE id LIKE ${prefix}$ LIMIT 1",
+                {"prefix": did + "%"})
         if not recs:
             return f"交付件不存在: {did}"
 
@@ -833,7 +860,7 @@ class AgentExecutor:
 
         lines = []
         for r in recs:
-            lines.append(f"- Q{getattr(r, 'id', '')[:8]}: {getattr(r, 'question', '')[:200]}")
+            lines.append(f"- [{getattr(r, 'id', '')}] {getattr(r, 'question', '')[:200]}")
         return "\n".join(lines)
 
     async def _t_answer_question(self, sor, p, pid):
@@ -842,6 +869,17 @@ class AgentExecutor:
         if not qid or not answer:
             return "需要问题ID和回答内容"
 
+        # 先精确匹配，再前缀匹配兜底（兼容截断 ID）
+        recs = await sor.sqlExe(
+            "SELECT id FROM pipeline_agent_questions WHERE id=${qid}$", {"qid": qid})
+        if not recs and len(qid) >= 6:
+            recs = await sor.sqlExe(
+                "SELECT id FROM pipeline_agent_questions WHERE id LIKE ${prefix}$ LIMIT 1",
+                {"prefix": qid + "%"})
+        if not recs:
+            return f"问题不存在: {qid}"
+        qid = getattr(recs[0], "id", qid)
+
         await sor.sqlExe(
             "UPDATE pipeline_agent_questions SET answered=1, answer=${a}$ WHERE id=${qid}$",
             {"a": answer, "qid": qid})