diff --git a/.gitea/workflows/claude.yml b/.gitea/workflows/claude.yml
new file mode 100644
index 0000000..bfa5dcc
--- /dev/null
+++ b/.gitea/workflows/claude.yml
@@ -0,0 +1,129 @@
+name: Claude Code Assistant
+
+on:
+  issues:
+    types: [opened, labeled]
+  issue_comment:
+    types: [created]
+
+jobs:
+  claude-code:
+    if: >-
+      (github.event_name == 'issues' &&
+       contains(toJSON(github.event.issue.labels), 'claude')) ||
+      (github.event_name == 'issue_comment' &&
+       contains(github.event.comment.body, '@claude'))
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Run Claude on Issue
+        env:
+          ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
+          GIT_TOKEN: ${{ secrets.GIT_TOKEN }}
+        run: |
+          set +e
+
+          # Configure git
+          git config user.name "Claude Bot"
+          git config user.email "claude@localhost"
+          git remote set-url origin "http://admin:${GIT_TOKEN}@localhost:3000/${{ github.repository }}.git"
+
+          ISSUE_NUMBER="${{ github.event.issue.number }}"
+          ISSUE_TITLE="${{ github.event.issue.title }}"
+          REPO="${{ github.repository }}"
+          LABELS_JSON='${{ toJSON(github.event.issue.labels) }}'
+
+          # Determine model + cost limits from issue labels
+          # Default: haiku (cheap). Add claude:sonnet or claude:opus for harder tasks.
+          CLAUDE_MODEL="haiku"
+          MAX_TURNS=15
+          MAX_BUDGET="0.50"
+          EFFORT="low"
+          if echo "$LABELS_JSON" | grep -q '"claude:opus"'; then
+            CLAUDE_MODEL="claude-opus-4-6"
+            MAX_TURNS=40
+            MAX_BUDGET="5.00"
+            EFFORT="high"
+          elif echo "$LABELS_JSON" | grep -q '"claude:sonnet"'; then
+            CLAUDE_MODEL="claude-sonnet-4-6"
+            MAX_TURNS=25
+            MAX_BUDGET="2.00"
+            EFFORT="medium"
+          fi
+
+          ISSUE_BODY=$(curl -s "http://localhost:3000/api/v1/repos/${REPO}/issues/${ISSUE_NUMBER}" \
+            -H "Authorization: token ${GIT_TOKEN}" | python3 -c "import sys,json; print(json.load(sys.stdin).get('body',''))")
+
+          COMMENT_BODY=""
+          if [ "${{ github.event_name }}" = "issue_comment" ]; then
+            COMMENT_ID="${{ github.event.comment.id }}"
+            COMMENT_BODY=$(curl -s "http://localhost:3000/api/v1/repos/${REPO}/issues/comments/${COMMENT_ID}" \
+              -H "Authorization: token ${GIT_TOKEN}" | python3 -c "import sys,json; print(json.load(sys.stdin).get('body',''))")
+          fi
+
+          BRANCH="claude/issue-${ISSUE_NUMBER}"
+          git checkout -b "${BRANCH}"
+
+          # Run Claude Code with cost controls
+          claude -p "You are working on the repository ${REPO} (Gitea instance at http://localhost:3000).
+          A Gitea issue needs your attention:
+
+          Issue #${ISSUE_NUMBER}: ${ISSUE_TITLE}
+          Description: ${ISSUE_BODY}
+          Additional context: ${COMMENT_BODY}
+
+          IMPORTANT RULES:
+          - Do NOT retry failed commands more than once. If something fails twice, stop and report the error.
+          - Do NOT loop on failing tests. Fix the obvious issue or report it. Never run the same failing command 3+ times.
+          - If you cannot complete the task, push what you have, create the PR as draft, and explain what is blocked.
+          - Be efficient: read only files you need, make targeted edits, avoid unnecessary exploration.
+
+          Steps:
+          1. Read and understand the relevant parts of the codebase
+          2. Implement the requested changes
+          3. Commit your changes with a descriptive message
+          4. Push branch ${BRANCH} to origin
+          5. Create a pull request targeting main that references issue #${ISSUE_NUMBER}
+          6. Post a comment on issue #${ISSUE_NUMBER} summarizing what you did
+
+          Git is configured. You are on branch ${BRANCH}. Work in the current directory.
+          Use git commands to push, and curl to the Gitea API for PR creation and comments.
+          Gitea API token is available as env var GIT_TOKEN." \
+            --allowedTools "Bash,Read,Edit,Write,Glob,Grep" \
+            --model "${CLAUDE_MODEL}" \
+            --max-turns "${MAX_TURNS}" \
+            --max-budget-usd "${MAX_BUDGET}" \
+            --effort "${EFFORT}" \
+            --permission-mode bypassPermissions \
+            --output-format json 2>&1 > /tmp/claude-result.json
+
+          CLAUDE_EXIT=$?
+
+          # Extract cost from JSON output
+          COST=$(python3 -c "
+          import json
+          with open('/tmp/claude-result.json') as f:
+              data = json.load(f)
+          cost = data.get('total_cost_usd', 0)
+          print(f'\${cost:.4f}')
+          " 2>/dev/null || echo "unknown")
+
+          # Amend the last commit to include cost and model
+          if git log --oneline main..HEAD 2>/dev/null | head -1 | grep -q .; then
+            LAST_MSG=$(git log -1 --format=%B)
+            git commit --amend -m "${LAST_MSG}
+
+          Claude model: ${CLAUDE_MODEL} | API cost: ${COST}" --no-verify
+            git push origin "${BRANCH}" --force
+          fi
+
+          # Post cost as comment
+          curl -s -X POST "http://localhost:3000/api/v1/repos/${REPO}/issues/${ISSUE_NUMBER}/comments" \
+            -H "Authorization: token ${GIT_TOKEN}" \
+            -H "Content-Type: application/json" \
+            -d "{\"body\": \"Done (model: **${CLAUDE_MODEL}**, effort: ${EFFORT}, budget cap: \$${MAX_BUDGET}). API cost: **${COST}**\"}" > /dev/null
+
+          exit ${CLAUDE_EXIT}