feat(runner): unify plugin execution across agents and event processors

src/langbot/templates/config.yaml

@@ -286,9 +286,9 @@ plugin:
     binary_storage:
         # Max bytes for a single plugin binary storage value
         max_value_bytes: 10485760
-agent_runner:
+runner:
     # Host-level admin permissions for trusted control plugins. These plugins
-    # can use existing plugin action handlers to inspect or manage AgentRunner
+    # can use existing plugin action handlers to inspect or manage Runner
     # infrastructure across runner/plugin boundaries. Keep empty unless you
     # fully trust the plugin identity.
     #

src/langbot/templates/metadata/pipeline/ai.yaml

@@ -17,7 +17,7 @@ stages:
           zh_Hans: 运行器
         type: select
         required: true
-        # Options and default are dynamically populated from AgentRunnerRegistry
+        # Options and default are dynamically populated from RunnerRegistry
       - name: expire-time
         label:
           en_US: Conversation expire time (seconds)
@@ -38,6 +38,6 @@ stages:
         type: integer
         required: true
         default: 0
-  # Runner config stages are dynamically added from AgentRunnerRegistry
+  # Runner config stages are dynamically added from RunnerRegistry
   # Each plugin runner's config schema is added as a separate stage
   # The stage name matches the runner id for frontend matching