ALL-1871 PR-3: Address re-geocoding validation on address cell edits

## ALL-1871 PR-3 - Frontend: Address re-geocoding on edit (debounced) Linear: ALL-1871 ("In-line editing of CSV data in bulk upload preview") Branch: wilbo/all-1871-address-revalidation Depends on: PR-2 merged (usePreviewValidation hook) ### What to build When address fields (streetOne, streetTwo, city, state, postalCode, country) are edited, re-run the backend geocoding/address validation for those rows via GraphQL, then feed the result back into the live validation state. ### GraphQL available The schema already has validateAddresses (batch) -- check apps/dashboard/lib/@generated/graphql.ts for the exact query shape: - Query: `validateAddresses(addresses: [AddressInput!]!): [AddressValidationBatchResult!]!` (search graphql.ts for `validateAddresses` to find input/return types) - This is the same endpoint the backend validation service uses internally - It hits Mapbox so MUST be debounced (500ms per Linear issue spec) ### Key files CREATE: apps/dashboard/hooks/useAddressRevalidation.ts - Input: mergedRows (from usePreviewValidation), editedCells, activeErrors - Tracks which row indices have had address fields edited since last geocode - On change, waits 500ms (debounce), then calls validateAddresses for dirty address rows - Returns: { addressErrors: ValidationError[], pendingRows: Set<number> } - pendingRows: row indices awaiting geocoding result (UI can show a spinner on those address cells) - addressErrors: validation errors for address fields from geocoder response EDIT: apps/dashboard/hooks/usePreviewValidation.ts - Accept addressErrors as an additional input and merge them with client-side errors - Address field errors in activeErrors should be replaced by addressErrors for the relevant rows EDIT: apps/dashboard/components/pages/ConnectPage/BulkUpload/EditableCell.tsx (from PR-1) - Accept optional `isPending?: boolean` prop - When true, show a small spinner/loading indicator instead of the error/normal state so user knows geocoding is in flight EDIT: apps/dashboard/components/pages/ConnectPage/BulkUploadTab.tsx - Wire up useAddressRevalidation, pass pendingRows down to PreviewTable -> EditableCell ### Address fields to watch streetOne, streetTwo, city, state, postalCode, country Any edit to any of these for a given row marks that row as needing re-geocoding. ### Rate limit protection - 500ms debounce window after last keystroke - Batch: collect all dirty address rows and geocode in one validateAddresses call - Do NOT geocode on every keypress ### Acceptance test - User edits a street address cell - Address cells in that row briefly show a pending/loading indicator - After ~500ms, if valid geocode, previous address error clears - If invalid address, cells show red border with geocoder error message - Fixing a previously-invalid address removes the error from the error panel ### Does NOT include - Sending edited rows to backend import endpoint (PR-4) - Re-validating device/manufacturer fields server-side ### Dependencies - Depends on PR-2 merged (usePreviewValidation hook in place) ### Gotcha The validateAddresses GQL query might not be exposed in the apollo client hooks yet -- check apps/dashboard/lib/gql/queries/ for it. If not present, create a new .graphql file and run codegen (pnpm codegen from apps/dashboard).