ci: Create Github Action to Automate CODEOWNER update

.github/workflows/update-codeowners.yml

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+name: Update CODEOWNERS
+
+on:
+  schedule:
+    # Run weekly on Monday at 00:00 UTC
+    - cron: '0 0 * * 1'
+  workflow_dispatch: # Allow manual triggering
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  update-codeowners:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    env:
+      DEPTH: 3
+      MIN_COMMITS: 1
+      DAYS_BACK: 180
+      TOP_N: 5
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4.2.2
+        with:
+          fetch-depth: 0 # Fetch full history for accurate analysis
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Run CODEOWNERS analyzer
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          python scripts/codeowner_analyzer.py \
+            --output .github/CODEOWNERS \
+            --depth ${{ env.DEPTH }} \
+            --min-commits ${{ env.MIN_COMMITS }} \
+            --days-back ${{ env.DAYS_BACK }} \
+            --top-n ${{ env.TOP_N }} \
+            --allowed-users-file scripts/authorized_codeowner.txt
+
+      - name: Check for changes
+        id: check_changes
+        run: |
+          # Check if CODEOWNERS file is new (unstaged) or has changes
+          if git ls-files --error-unmatch .github/CODEOWNERS >/dev/null 2>&1; then
+            # File is tracked, check for changes
+            if git diff --quiet .github/CODEOWNERS; then
+              echo "changed=false" >> $GITHUB_OUTPUT
+              echo "No changes detected in CODEOWNERS"
+            else
+              echo "changed=true" >> $GITHUB_OUTPUT
+              echo "Changes detected in CODEOWNERS"
+            fi
+          else
+            # File is untracked (newly created)
+            echo "changed=true" >> $GITHUB_OUTPUT
+            echo "CODEOWNERS file is new"
+          fi
+
+      - name: Create Pull Request
+        if: steps.check_changes.outputs.changed == 'true'
+        uses: peter-evans/create-pull-request@v7
+        with:
+          token: ${{ secrets.FLASHINFER_BOT_TOKEN }}
+          committer: flashinfer-bot <flashinfer-bot@users.noreply.github.com>
+          author: flashinfer-bot <flashinfer-bot@users.noreply.github.com>
+          commit-message: |
+            chore: update CODEOWNERS based on git history
+
+            Auto-generated CODEOWNERS update based on commit activity over the last ${{ env.DAYS_BACK }} days.
+
+            🤖 Generated with [Claude Code](https://claude.com/claude-code)
+
+            Co-Authored-By: Claude <noreply@anthropic.com>
+          branch: auto-update-codeowners
+          base: main
+          delete-branch: true
+          title: 'chore: Update CODEOWNERS'
+          body: |
+            ## Summary
+
+            This PR updates the CODEOWNERS file based on git commit history analysis from the last ${{ env.DAYS_BACK }} days.
+
+            ## Changes
+
+            - Updated `.github/CODEOWNERS` with current code ownership based on:
+              - Commit frequency
+              - File coverage
+              - Commit recency
+
+            ## How to Review
+
+            1. Review the changes to `.github/CODEOWNERS`
+            2. Verify that the assigned owners are appropriate for each module
+            3. Make manual adjustments if needed before merging
+
+            ## Notes
+
+            - This is an automated PR generated weekly
+            - Minimum commits threshold: ${{ env.MIN_COMMITS }}
+            - Analysis period: ${{ env.DAYS_BACK }} days
+            - Directory depth: ${{ env.DEPTH }} levels
+            - Top N owners per module: ${{ env.TOP_N }}
+
+            ---
+
+            🤖 This PR was automatically generated by the [update-codeowners workflow](.github/workflows/update-codeowners.yml)
+          labels: |
+            automated
+            maintenance
+          assignees: |
+
+          reviewers: |

scripts/authorized_codeowner.txt

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+aleozlx
+Amir-19
+Anerudhan
+azhurkevich
+bkryu
+cyx-6
+dierksen
+IwakuraRein
+joker-eph
+kahyunnam
+kaixih
+nv-yunzheq
+nvmbreughe
+paul841029
+Quackens
+sergachev
+sunggg
+ttyio
+wenscarl
+yongwww
+yzh119