Add dynamic apply wizard customization with admin settings UI

- Create wizard config types, utilities, and defaults (wizard-config.ts)
- Add admin apply settings page with drag-and-drop step ordering, dropdown
  option management, feature toggles, welcome message customization, and
  custom field builder with select/multiselect options editor
- Build dynamic apply wizard component with animated step transitions,
  mobile-first responsive design, and config-driven form validation
- Update step components to accept dynamic config (categories, ocean issues,
  field visibility, feature flags)
- Replace hardcoded enum validation with string-based validation for
  admin-configurable dropdown values, with safe enum casting at storage layer
- Add wizard template system (model, router, admin UI) with built-in
  MOPC Classic preset
- Add program wizard config CRUD procedures to program router
- Update application router getConfig to return wizardConfig, submit handler
  to store custom field data in metadataJson
- Add edition-based apply page, project pool page, and supporting routers
- Fix CSS (invalid sm:fixed-none), Enter key handler (skip textarea),
  safe area insets for notched phones, buildStepsArray field visibility

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

prisma/migrations/20260207000000_universal_apply_programid/migration.sql

@@ -0,0 +1,51 @@
+-- Universal Apply Page: Make Project.roundId nullable and add programId FK
+-- This migration enables projects to be submitted to a program/edition without being assigned to a specific round
+
+-- Step 1: Add Program.slug for edition-wide apply URLs (nullable for existing programs)
+ALTER TABLE "Program" ADD COLUMN "slug" TEXT;
+CREATE UNIQUE INDEX "Program_slug_key" ON "Program"("slug");
+
+-- Step 2: Add programId column (nullable initially to handle existing data)
+ALTER TABLE "Project" ADD COLUMN "programId" TEXT;
+
+-- Step 3: Backfill programId from existing round relationships
+-- Every project currently has a roundId, so we can populate programId from Round.programId
+UPDATE "Project" p
+SET "programId" = r."programId"
+FROM "Round" r
+WHERE p."roundId" = r.id;
+
+-- Step 4: Verify backfill succeeded (should be 0 rows with NULL programId)
+-- If this fails, manual intervention is needed
+DO $$
+DECLARE
+  null_count INTEGER;
+BEGIN
+  SELECT COUNT(*) INTO null_count FROM "Project" WHERE "programId" IS NULL;
+  IF null_count > 0 THEN
+    RAISE EXCEPTION 'Migration failed: % projects have NULL programId after backfill', null_count;
+  END IF;
+END $$;
+
+-- Step 5: Make programId required (NOT NULL constraint)
+ALTER TABLE "Project" ALTER COLUMN "programId" SET NOT NULL;
+
+-- Step 6: Add foreign key constraint for programId
+ALTER TABLE "Project" ADD CONSTRAINT "Project_programId_fkey"
+  FOREIGN KEY ("programId") REFERENCES "Program"("id") ON DELETE CASCADE;
+
+-- Step 7: Make roundId nullable (allow projects without round assignment)
+ALTER TABLE "Project" ALTER COLUMN "roundId" DROP NOT NULL;
+
+-- Step 8: Update round FK to SET NULL on delete (instead of CASCADE)
+-- Projects should remain in the database if their round is deleted
+ALTER TABLE "Project" DROP CONSTRAINT "Project_roundId_fkey";
+ALTER TABLE "Project" ADD CONSTRAINT "Project_roundId_fkey"
+  FOREIGN KEY ("roundId") REFERENCES "Round"("id") ON DELETE SET NULL;
+
+-- Step 9: Add performance indexes
+-- Index for filtering unassigned projects (WHERE roundId IS NULL)
+CREATE INDEX "Project_programId_idx" ON "Project"("programId");
+CREATE INDEX "Project_programId_roundId_idx" ON "Project"("programId", "roundId");
+
+-- Note: The existing "Project_roundId_idx" remains for queries filtering by round