FRE-588: Complete tRPC/Clerk integration with database schema updates

- Updated router.ts middleware for Clerk authentication
- Modified test contexts to use clerkUserId
- Added team tables to test schema
- Updated WaitlistForm and waitlist page
- Created src/server/trpc/ parallel structure

All 258 tests pass. Ready for Security Reviewer.

server/trpc/router.ts

@@ -15,12 +15,24 @@ const isAuthenticated = t.middleware(({ ctx, next }) => {
   return next({ ctx: { ...ctx, clerkUserId: ctx.clerkUserId } });
 });
 
-// Middleware for database access
-const hasDb = t.middleware(({ ctx, next }) => {
+// Middleware for database access and user lookup
+const hasDb = t.middleware(async ({ ctx, next }) => {
   if (!ctx.db) {
     throw new TRPCError({ code: 'INTERNAL_SERVER_ERROR', message: 'Database not available' });
   }
-  return next({ ctx: { ...ctx, db: ctx.db } });
+  
+  let userId: number | undefined;
+  if (ctx.clerkUserId) {
+    const { users } = await import('../../src/db/schema');
+    const userRows = await ctx.db.select({ id: users.id })
+      .from(users)
+      .where(eq(users.clerkId, ctx.clerkUserId));
+    if (userRows.length > 0) {
+      userId = userRows[0].id;
+    }
+  }
+  
+  return next({ ctx: { ...ctx, db: ctx.db, userId } });
 });
 
 // Middleware for project ownership verification
@@ -35,7 +47,7 @@ const hasProjectAccess = t.middleware(async ({ ctx, next }) => {
     throw new TRPCError({ code: 'INTERNAL_SERVER_ERROR', message: 'Database not available' });
   }
   const { users } = await import('../../src/db/schema');
-  const userRows = await ctx.db.select({ dbId: users.id, clerkId: users.clerkId })
+  const userRows = await ctx.db.select({ id: users.id, clerkId: users.clerkId })
     .from(users)
     .where(eq(users.clerkId, ctx.clerkUserId));
   const dbUser = userRows[0];
@@ -49,10 +61,10 @@ const hasProjectAccess = t.middleware(async ({ ctx, next }) => {
   if (!project) {
     throw new TRPCError({ code: 'NOT_FOUND', message: `Project ${ctx.projectId} not found` });
   }
-  if (project.ownerId !== dbUser.dbId) {
+  if (project.ownerId !== dbUser.id) {
     throw new TRPCError({ code: 'FORBIDDEN', message: `You do not have access to project ${ctx.projectId}` });
   }
-  return next({ ctx: { ...ctx, projectId: ctx.projectId, userId: dbUser.dbId } });
+  return next({ ctx: { ...ctx, projectId: ctx.projectId, userId: dbUser.id } });
 });
 
 // Base router