Summary

• Add the missing dashboard ESLint dependencies and flat config so npm run lint is executable and meaningful.
• Fix existing dashboard lint findings without weakening lint rules.
• Make the dashboard Playwright preview port configurable to avoid local port collisions during e2e runs.

Validation

• go mod verify
• go mod download
• cd web && npm ci --silent && npm run build
• test -z "$(gofmt -l .)"
• go vet ./...
• go test -v -race -coverprofile=coverage.txt -covermode=atomic ./...
• go tool cover -func=coverage.txt | tail -1 (total: 78.5%)
• go build -v -o waza ./cmd/waza && ./waza --version
• ./waza run ./examples/code-explainer/eval.yaml --verbose (accepted expected eval failure exit code 1)
• go run github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.10.1 run ./... --timeout=5m
• cd site && npm ci --silent && npm run build
• cd web && npm run lint
• cd web && PLAYWRIGHT_PORT=4174 npx playwright test --project=chromium
• cd site && npm run test:e2e