fix: refactor workflow

.github/workflows/rigging_pr_description.yml

@@ -2,9 +2,7 @@ name: Update PR Description with Rigging
 
 on:
   pull_request:
-    types:
-      - edited  # Trigger when the PR is updated (e.g., title, description, or labels)
-      - reopened  # Trigger when the PR is reopened
+    types: [opened, synchronize]
 
 jobs:
   update-description:
@@ -14,50 +12,37 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 #v4.2.2
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
-          fetch-depth: 0
+          fetch-depth: 0 # full history for proper diffing
 
-      # Get the diff first
-      - name: Get Diff
-        id: diff
-        run: |
-          git fetch origin ${{ github.base_ref }}
-          MERGE_BASE=$(git merge-base HEAD origin/${{ github.base_ref }})
-          # Encode the diff as base64 to preserve all characters
-          DIFF=$(git diff $MERGE_BASE..HEAD | base64 -w 0)
-          echo "diff=$DIFF" >> $GITHUB_OUTPUT
-
-      - uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b #v5.0.3
+      - name: Set up Python
+        uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5.0.3
         with:
-          python-version: "3.11"
+          python-version: "3.10"
 
-      - name: Install dependencies
+      - name: Install uv
         run: |
           python -m pip install --upgrade pip
-          pip cache purge
-          pip install pydantic==2.9.1
-          pip install rigging[all]
+          pip install uv
 
-      # Generate the description using the diff
       - name: Generate PR Description
         id: description
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
-          PR_NUMBER: ${{ github.event.pull_request.number }}
-          GIT_DIFF: ${{ steps.diff.outputs.diff }}
         run: |
-          python .github/scripts/rigging_pr_decorator.py
+          DESCRIPTION=$(uv run --no-project .github/scripts/rigging_pr_decorator.py origin/${{ github.base_ref }})
+          echo "description<<EOF" >> $GITHUB_OUTPUT
+          echo "$DESCRIPTION" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
 
-      # Update the PR description
       - name: Update PR Description
-        uses: nefrob/pr-description@4dcc9f3ad5ec06b2a197c5f8f93db5e69d2fdca7 #v1.2.0
+        uses: nefrob/pr-description@4dcc9f3ad5ec06b2a197c5f8f93db5e69d2fdca7 # v1.2.0
         with:
           content: |
             ## AI-Generated Summary
 
-            ${{ steps.description.outputs.content }}
+            ${{ steps.description.outputs.description }}
 
             ---