Add claude pr automations

.github/workflows/claude-mention.yml

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+name: Claude Mention
+
+on:
+  issue_comment:
+    types: [created]
+  pull_request_review_comment:
+    types: [created]
+  pull_request_review:
+    types: [submitted]
+  issues:
+    types: [opened, assigned]
+
+jobs:
+  claude:
+    if: |
+      (github.event_name == 'issue_comment' && contains(github.event.comment.body, '@claude')) ||
+      (github.event_name == 'pull_request_review_comment' && contains(github.event.comment.body, '@claude')) ||
+      (github.event_name == 'pull_request_review' && contains(github.event.review.body, '@claude')) ||
+      (github.event_name == 'issues' && (contains(github.event.issue.body, '@claude') || contains(github.event.issue.title, '@claude')))
+    runs-on: ubuntu-latest
+    env:
+      ANTHROPIC_BASE_URL: ${{ secrets.ANTHROPIC_BASE_URL }}
+      ANTHROPIC_CUSTOM_HEADERS: |
+        Authorization: Bearer ${{ secrets.ANTHROPIC_API_KEY }}
+        x-databricks-use-coding-agent-mode: true
+      ANTHROPIC_DEFAULT_OPUS_MODEL: databricks-claude-opus-4-7
+      ANTHROPIC_DEFAULT_SONNET_MODEL: databricks-claude-sonnet-4-6
+      ANTHROPIC_DEFAULT_HAIKU_MODEL: databricks-claude-haiku-4-5
+    permissions:
+      contents: write
+      pull-requests: write
+      issues: write
+      id-token: write
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
+        with:
+          fetch-depth: 1
+
+      - uses: anthropics/claude-code-action@787c5a0ce96a9a6cfb050ea0c8f4c05f2447c251  # v1
+        with:
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          trigger_phrase: "@claude"

.github/workflows/claude-review.yml

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+name: Claude PR Review
+
+on:
+  pull_request:
+    types: [opened]
+
+jobs:
+  review:
+    runs-on: ubuntu-latest
+    env:
+      ANTHROPIC_BASE_URL: ${{ secrets.ANTHROPIC_BASE_URL }}
+      ANTHROPIC_CUSTOM_HEADERS: |
+        Authorization: Bearer ${{ secrets.ANTHROPIC_API_KEY }}
+        x-databricks-use-coding-agent-mode: true
+      ANTHROPIC_DEFAULT_OPUS_MODEL: databricks-claude-opus-4-7
+      ANTHROPIC_DEFAULT_SONNET_MODEL: databricks-claude-sonnet-4-6
+      ANTHROPIC_DEFAULT_HAIKU_MODEL: databricks-claude-haiku-4-5
+    permissions:
+      contents: read
+      pull-requests: write
+      id-token: write
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
+        with:
+          fetch-depth: 1
+
+      - uses: anthropics/claude-code-action@787c5a0ce96a9a6cfb050ea0c8f4c05f2447c251  # v1
+        with:
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          prompt: |
+            REPO: ${{ github.repository }}
+            PR NUMBER: ${{ github.event.pull_request.number }}
+
+            Review this pull request. Focus on:
+            - Correctness — bugs, edge cases, broken assumptions
+            - Project conventions — match the patterns in neighboring code; this is a Python project using uv, ruff, pytest
+            - Security — secret handling, subprocess invocations, path traversal
+            - Tests — does new behavior have coverage in tests/?
+
+            Be concise. Skip nitpicks. If the PR is small and clean, say so in one line rather than inventing feedback.
+
+            The PR branch is already checked out in the current working directory.
+            Use `gh pr comment` for top-level feedback.
+            Use `mcp__github_inline_comment__create_inline_comment` (with `confirmed: true`) to highlight specific code issues.
+            Only post GitHub comments — don't submit review text as messages.
+
+          claude_args: |
+            --allowedTools "mcp__github_inline_comment__create_inline_comment,Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*)"