ALL-1874 PR-4: Frontend — RuleEditorModal with create/edit form and test-rule dry-run panel

## Context Linear issue ALL-1874. Depends on PR-3 (frontend list tab) and PR-2 (testRule backend query). ## Key files - `apps/dashboard/components/pages/DataReviewPage/RulesTab.tsx` — stub "Add rule" button from PR-3; wire to RuleEditorModal - `apps/dashboard/components/pages/DataReviewPage/RuleEditorModal.tsx` — NEW FILE, create here - `apps/dashboard/hooks/useTestRule.ts` — NEW FILE, wraps the testRule query - Any existing form primitives: check `apps/dashboard/components/ui/` or Edges component library for Select, Input, Slider, Form - GraphQL: ensure testRule query is in codegen output (after PR-2 lands) ## UI spec (RuleEditorModal) ### Fields 1. **Name** — text input, required 2. **Description** — textarea, optional 3. **Issue Type** — Select with common values: GEOCODE_FAILURE, FORMAT_WARNING, MISSING_REQUIRED_FIELD, DUPLICATE_RECORD, plus free-text fallback 4. **Field** — text input, optional (dotted path e.g. address.postalCode) 5. **Matcher** — type Select (regex, equals, jsonPath, contains, startsWith, endsWith, range, oneOf) + dynamic config sub-form per type: - regex: pattern input + flags input + live validity badge - equals: value input - jsonPath: path input + expected input - contains/startsWith/endsWith: value input - range: min/max number inputs - oneOf: multi-value chip input 6. **Transform** — Add transform button; each transform row shows type selector + config inputs (same types as PR-1 new types: padLeft, replace, trim, setField, uppercase, lowercase, formatPhone, formatPostalCode, concatenate, mapValue). Support multiple transforms (array, ordered list with move-up/move-down) 7. **Confidence threshold** — number input (0.0-1.0), default 0.9 8. **Priority** — number input, show existing rules priorities as hint 9. **Enabled** — checkbox ### Test-rule dry-run panel (inside modal, below form) - Paste JSON text area for sampleRecord.normalizedData (JSON object) - "Test" button: fires testRule GraphQL query with current form values + sample record - Result: shows Matched: Yes/No, Before fields, After fields side-by-side - Shows validation errors if matcher/transform form is invalid before sending ### Save behavior - Create mode: calls createResolutionRule mutation - Edit mode: calls updateResolutionRule mutation - On success: close modal, refetch resolutionRules list - On Zod/GraphQL error from server: show inline error near relevant field ## Acceptance test - RuleEditorModal renders without crash in Storybook with both create and edit props - Selecting regex matcher shows pattern + flags inputs; selecting oneOf shows multi-value chip input - Test-rule panel with valid JSON fires the testRule query (mocked) and renders before/after - createResolutionRule mutation called on save in create mode with correct JSON shape for all matcher types ## Notes - Depends on PR-2 (testRule query SDL) and PR-3 (RulesTab wire-up) - Platform-default rules (workspaceId==null): modal opened in read-only/disable mode for non-super-admin users - Keep form state in local React state (react-hook-form or plain useState pattern — follow existing modal patterns in the codebase) - Rule cascading (rules triggering other rules) is scoped out