update(actions): use heatmap.json for authoritative commit history

.gitea/workflows/update-readme.yaml

@@ -26,10 +26,9 @@ jobs:
             elif command -v apt-get &> /dev/null; then apt-get update && apt-get install -y jq; fi
           fi
 
-          USER_URL="http://gitea-http:3000/api/v1/users/patrick/heatmap?limit=1000"
-
-          RAW_DATA=$(wget -qO- --header="Authorization: token ${{ secrets.PAT_TOKEN }}" "$USER_URL")
-          TOTAL_COMMITS=$(echo "$RAW_DATA" | jq '. | map(.contributions) | add')
+          # Use our own heatmap.json instead of Gitea API
+          HEATMAP_FILE="public/heatmap.json"
+          TOTAL_COMMITS=$(jq '[.[] | .count] | add' "$HEATMAP_FILE")
 
           echo "Global Commit Velocity: $TOTAL_COMMITS"
           echo "COMMIT_VELOCITY=$TOTAL_COMMITS" >> $GITHUB_ENV