feat: finalize demo loop timer

yaml_instance/demo_loop_timer.yaml

@@ -1,40 +1,65 @@
-version: 0.4.0
+version: 0.0.0
 graph:
   start:
     - Writer
   end:
     - Finalizer
   id: loop_timer_demo
-  description: LoopTimer demo that releases output after 30 seconds.
+  description: LoopTimer demo that releases output after 10 seconds of agent iterations.
   is_majority_voting: false
   log_level: INFO
   nodes:
-    - id: Writer
-      type: literal
-      description: Responsible for outputting a fixed draft.
-      config:
-        content: Draft iteration from Writer
-        role: assistant
     - id: Critic
-      type: literal
+      type: agent
-      description: Simulates human feedback, always requesting further revisions.
       config:
-        content: Please revise again
+        name: ${MODEL_NAME}
-        role: user
+        provider: openai
-    - id: Loop Gate
+        role: You are a critic. Provide brief feedback (1 sentence) to improve the draft.
-      type: loop_timer
+        base_url: ${BASE_URL}
-      description: Tracks elapsed time, only granting passage after 30 seconds.
+        api_key: ${API_KEY}
+        params: {}
+        tooling: []
+        thinking: null
+        memories: []
+        retry: null
+      description: Reviews the draft and provides feedback for improvement.
+      context_window: 0
+      log_output: true
+    - id: Writer
+      type: agent
       config:
-        max_duration: 30
+        name: ${MODEL_NAME}
-        duration_unit: seconds
+        provider: openai
-        reset_on_emit: true
+        role: You are a technical writer. Generate a brief draft (1 sentence).
-        message: Loop finished after 30 seconds
+        base_url: ${BASE_URL}
+        api_key: ${API_KEY}
+        params: {}
+        tooling: []
+        thinking: null
+        memories: []
+        retry: null
+      description: Drafts content based on feedback.
+      context_window: 0
+      log_output: true
     - id: Finalizer
       type: literal
-      description: Receives the release signal from Loop Gate and outputs the final statement.
       config:
         content: Final summary released
         role: assistant
+      description: Receives the release signal from Loop Gate and outputs the final statement.
+      context_window: 0
+      log_output: true
+    - id: Loop Gate
+      type: loop_timer
+      config:
+        max_duration: 20
+        duration_unit: seconds
+        reset_on_emit: true
+        message: Time limit reached - loop automatically terminated
+        passthrough: false
+      description: Tracks elapsed time, only granting passage after 10 seconds.
+      context_window: 0
+      log_output: true
   edges:
     - from: Writer
       to: Critic
@@ -43,7 +68,7 @@ graph:
     - from: Critic
       to: Loop Gate
     - from: Loop Gate
-      to: Writer  # keep Loop Gate inside the cycle
+      to: Writer
     - from: Loop Gate
       to: Finalizer
     - from: Loop Gate
@@ -53,3 +78,5 @@ graph:
       carry_data: true
       keep_message: false
       process: null
+vars:
+  MODEL_NAME: qwen/qwen3-8b