fix(M11b-3/4): rbac_seed traceability 改为 grep 实测函数名/所在文件（响应 QC #20）

- 8 条 permissions[].traceability 原声称 pbl_runtime_ext/api.py::api_<契约名>，
  实测 grep -rn 'api_pbl_' --include=*.py . 零命中：api.py 内函数无 api_ 前缀
- 逐条改写为「契约名 → pbl_runtime_ext/<实际文件>::<实际函数名>（行号）→ load_path.py PATHS[i]」
- broadcast_pull/stats 两条落 m11b_api.py:45/:83（api.py:265 经 from .m11b_api import 再导出）
- 顺手修 --check 成功行 print 中误写的 '%%'（非 % 格式化上下文，原样打出双百分号）
- 回归：python3 scripts/m11b34_rbac_seed.py --check rc=0（permissions=8 errors=0）

init/rbac_seed.json

@@ -1,7 +1,7 @@
 {
     "module": "pbl_runtime_ext",
     "milestone": "M11b-3 / M11b-4",
-    "note": "PBL 运行时广播/轮询端点 RBAC 权限种子清单（逐条显式登记，禁止 % / * 通配符）。由 scripts/m11b34_rbac_seed.py 导入 permission/rolepermission，并把 scripts/load_path.py --check 收敛到 rc=0。",
+    "note": "PBL 运行时广播/轮询端点 RBAC 权限种子清单（逐条显式登记，禁止 % / * 通配符）。由 scripts/m11b34_rbac_seed.py 导入 permission/rolepermission，并把 scripts/load_path.py --check 收敛到 rc=0。traceability 中的函数名与所在文件均为 grep 实测值（响应 QC #20）。",
     "default_role": "logined",
     "permissions": [
         {
@@ -12,7 +12,7 @@
             "endpoint": "wwwroot/api/pbl_runtime_event_append.dspy",
             "milestone": "M11b-2",
             "title": "运行时事件追加（单事务事件+状态写入）",
-            "traceability": "契约 pbl_runtime_event_append → pbl_runtime_ext/api.py::api_pbl_runtime_event_append → scripts/load_path.py PATHS[0]"
+            "traceability": "契约 pbl_runtime_event_append → pbl_runtime_ext/api.py::pbl_runtime_event_append（api.py:44）→ scripts/load_path.py PATHS[0]"
         },
         {
             "name": "pbl_runtime_event_poll",
@@ -22,7 +22,7 @@
             "endpoint": "wwwroot/api/pbl_runtime_event_poll.dspy",
             "milestone": "M11b-4",
             "title": "运行时事件 3s 轮询兜底拉取",
-            "traceability": "契约 pbl_runtime_event_poll → pbl_runtime_ext/api.py::api_pbl_runtime_event_poll → scripts/load_path.py PATHS[1]"
+            "traceability": "契约 pbl_runtime_event_poll → pbl_runtime_ext/api.py::pbl_runtime_event_poll（api.py:74）→ scripts/load_path.py PATHS[1]"
         },
         {
             "name": "pbl_entity_state_get",
@@ -32,7 +32,7 @@
             "endpoint": "wwwroot/api/pbl_entity_state_get.dspy",
             "milestone": "M11b-4",
             "title": "实体状态读取（服务端权威 state_version）",
-            "traceability": "契约 pbl_entity_state_get → pbl_runtime_ext/api.py::api_pbl_entity_state_get → scripts/load_path.py PATHS[2]"
+            "traceability": "契约 pbl_entity_state_get → pbl_runtime_ext/api.py::pbl_entity_state_get（api.py:90）→ scripts/load_path.py PATHS[2]"
         },
         {
             "name": "pbl_entity_state_apply",
@@ -42,7 +42,7 @@
             "endpoint": "wwwroot/api/pbl_entity_state_apply.dspy",
             "milestone": "M11b-2",
             "title": "实体状态变更申请（客户端禁写 state_version）",
-            "traceability": "契约 pbl_entity_state_apply → pbl_runtime_ext/api.py::api_pbl_entity_state_apply → scripts/load_path.py PATHS[3]"
+            "traceability": "契约 pbl_entity_state_apply → pbl_runtime_ext/api.py::pbl_entity_state_apply（api.py:111）→ scripts/load_path.py PATHS[3]"
         },
         {
             "name": "pbl_world_broadcast",
@@ -52,7 +52,7 @@
             "endpoint": "wwwroot/api/pbl_world_broadcast.dspy",
             "milestone": "M11b-3",
             "title": "服务端世界广播（提交后广播 ≤300ms）",
-            "traceability": "契约 pbl_world_broadcast → pbl_runtime_ext/api.py::api_pbl_world_broadcast → scripts/load_path.py PATHS[4]"
+            "traceability": "契约 pbl_world_broadcast → pbl_runtime_ext/api.py::pbl_world_broadcast（api.py:175）→ scripts/load_path.py PATHS[4]"
         },
         {
             "name": "pbl_session_member_add",
@@ -62,7 +62,7 @@
             "endpoint": "wwwroot/api/pbl_session_member_add.dspy",
             "milestone": "M11b-3",
             "title": "会话成员加入（广播订阅名单维护）",
-            "traceability": "契约 pbl_session_member_add → pbl_runtime_ext/api.py::api_pbl_session_member_add → scripts/load_path.py PATHS[5]"
+            "traceability": "契约 pbl_session_member_add → pbl_runtime_ext/api.py::pbl_session_member_add（api.py:211）→ scripts/load_path.py PATHS[5]"
         },
         {
             "name": "pbl_runtime_broadcast_pull",
@@ -72,7 +72,7 @@
             "endpoint": "wwwroot/api/pbl_runtime_broadcast_pull.dspy",
             "milestone": "M11b-4",
             "title": "广播增量拉取（3s 轮询兜底）",
-            "traceability": "契约 pbl_runtime_broadcast_pull → pbl_runtime_ext/api.py::api_pbl_runtime_broadcast_pull → scripts/load_path.py PATHS[6]"
+            "traceability": "契约 pbl_runtime_broadcast_pull → pbl_runtime_ext/m11b_api.py::pbl_runtime_broadcast_pull（m11b_api.py:45，由 api.py:265 经 _m11b 导入再导出）→ scripts/load_path.py PATHS[6]"
         },
         {
             "name": "pbl_runtime_broadcast_stats",
@@ -82,7 +82,7 @@
             "endpoint": "wwwroot/api/pbl_runtime_broadcast_stats.dspy",
             "milestone": "M11b-4",
             "title": "广播时延统计（裁决/广播/端到端指标）",
-            "traceability": "契约 pbl_runtime_broadcast_stats → pbl_runtime_ext/api.py::api_pbl_runtime_broadcast_stats → scripts/load_path.py PATHS[7]"
+            "traceability": "契约 pbl_runtime_broadcast_stats → pbl_runtime_ext/m11b_api.py::pbl_runtime_broadcast_stats（m11b_api.py:83，由 api.py:265 经 _m11b 导入再导出）→ scripts/load_path.py PATHS[7]"
         }
     ],
     "role_grants": {

scripts/m11b34_rbac_seed.py

@@ -295,7 +295,7 @@ def main():
         print('  FAIL ' + e)
     if not ok:
         return 1
-    print('  OK 全部路径逐条显式登记（无 %% / * 通配符）；'
+    print('  OK 全部路径逐条显式登记（无 % / * 通配符）；'
           '种子 ↔ 磁盘 .dspy ↔ load_path.PATHS 三方一致')
 
     if args.check: