ci: add Claude BugBot PR review workflow

Mirrors the better-memory setup: rekpero/claude-bugbot-github-action runs
on every pull_request opened/synchronize event, reviewing the diff and
posting comments. Skips dependabot PRs.

Requires repo secret CLAUDE_SETUP_TOKEN to be set before the bot can run.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: emp3thy

.github/workflows/bugbot.yml

@@ -0,0 +1,23 @@
+name: Claude BugBot
+
+on:
+  pull_request:
+    types: [opened, synchronize]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  bugbot:
+    name: Claude BugBot review
+    runs-on: ubuntu-latest
+    if: github.actor != 'dependabot[bot]'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Run Claude BugBot
+        uses: rekpero/claude-bugbot-github-action@main
+        with:
+          claude-setup-token: ${{ secrets.CLAUDE_SETUP_TOKEN }}