fix: Remove the PR triaging agent's dependence on "bot triaged" label

PiperOrigin-RevId: 819427872

.github/workflows/pr-triage.yml

@@ -3,10 +3,16 @@ name: ADK Pull Request Triaging Agent
 on:
   pull_request_target:
     types: [opened, reopened, edited]
+  workflow_dispatch:
+    inputs:
+      pr_number:
+        description: 'The Pull Request number to triage'
+        required: true
+        type: 'string'
 
 jobs:
   agent-triage-pull-request:
-    if: "!contains(github.event.pull_request.labels.*.name, 'bot triaged') && !contains(github.event.pull_request.labels.*.name, 'google-contributor')"
+    if: github.event_name == 'workflow_dispatch' || !contains(github.event.pull_request.labels.*.name, 'google-contributor')
     runs-on: ubuntu-latest
     permissions:
       pull-requests: write
@@ -33,7 +39,7 @@ jobs:
           GOOGLE_GENAI_USE_VERTEXAI: 0
           OWNER: 'google'
           REPO: 'adk-python'
-          PULL_REQUEST_NUMBER: ${{ github.event.pull_request.number }}
+          PULL_REQUEST_NUMBER: ${{ github.event.pull_request.number || github.event.inputs.pr_number }}
           INTERACTIVE: ${{ vars.PR_TRIAGE_INTERACTIVE }}
           PYTHONPATH: contributing/samples
         run: python -m adk_pr_triaging_agent.main

contributing/samples/adk_pr_triaging_agent/agent.py

@@ -298,7 +298,10 @@ root_agent = Agent(
       # 4. Steps
       When you are given a PR, here are the steps you should take:
       - Call the `get_pull_request_details` tool to get the details of the PR.
-      - Skip the PR (i.e. do not label or comment) if the PR is closed or is labeled with "{BOT_LABEL}" or "google-contributior".
+      - Skip the PR (i.e. do not label or comment) if any of the following is true:
+        - the PR is closed
+        - the PR is labeled with "google-contributior"
+        - the PR is already labelled with the above labels (e.g. "documentation", "services", "tools", etc.) and has a reviewer assigned.
       - Check if the PR is following the contribution guidelines.
         - If it's not following the guidelines, recommend or add a comment to the PR that points to the contribution guidelines (https://github.com/google/adk-python/blob/main/CONTRIBUTING.md).
         - If it's following the guidelines, recommend or add a label to the PR.