feat: Phase 1B complete - Perwerde & ValidatorPool UI

Perwerde (Education Platform):
- Add hybrid backend (Supabase + Blockchain + IPFS)
- Implement CourseList, CourseCreator, StudentDashboard
- Create courses table with RLS policies
- Add IPFS upload utility
- Integrate with pallet-perwerde extrinsics

ValidatorPool:
- Add validator pool management UI
- Implement PoolCategorySelector with 3 categories
- Add ValidatorPoolDashboard with pool stats
- Integrate with pallet-validator-pool extrinsics
- Add to StakingDashboard as new tab

Technical:
- Fix all toast imports (sonner)
- Fix IPFS File upload (Blob conversion)
- Fix RLS policies (wallet_address → auth.uid)
- Add error boundaries
- Add loading states

Status: UI complete, blockchain integration pending VPS deployment

web/supabase/migrations/006_create_perwerde_tables.sql

@@ -0,0 +1,85 @@
+-- Perwerde (Education) Tables
+-- Courses Table (ID comes from blockchain)
+CREATE TABLE IF NOT EXISTS public.courses (
+  id BIGINT PRIMARY KEY, -- Blockchain course_id
+  owner TEXT NOT NULL,
+  name TEXT NOT NULL,
+  description TEXT,
+  content_link TEXT, -- IPFS hash
+  status TEXT NOT NULL DEFAULT 'Active',
+  created_at TIMESTAMP WITH TIME ZONE NOT NULL
+);
+
+-- Enrollments Table
+CREATE TABLE IF NOT EXISTS public.enrollments (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  student_address TEXT NOT NULL,
+  course_id BIGINT REFERENCES public.courses(id) ON DELETE CASCADE,
+  enrolled_at TIMESTAMP WITH TIME ZONE NOT NULL,
+  completed_at TIMESTAMP WITH TIME ZONE,
+  points_earned INTEGER DEFAULT 0,
+  is_completed BOOLEAN DEFAULT false,
+  UNIQUE(student_address, course_id)
+);
+
+-- Indexes
+CREATE INDEX IF NOT EXISTS idx_courses_status ON public.courses(status);
+CREATE INDEX IF NOT EXISTS idx_enrollments_student ON public.enrollments(student_address);
+CREATE INDEX IF NOT EXISTS idx_enrollments_course ON public.enrollments(course_id);
+
+-- RLS Policies
+-- Courses
+ALTER TABLE public.courses ENABLE ROW LEVEL SECURITY;
+
+DROP POLICY IF EXISTS "Anyone can view courses" ON public.courses;
+CREATE POLICY "Anyone can view courses"
+  ON public.courses FOR SELECT
+  USING (true);
+
+DROP POLICY IF EXISTS "Admins can manage courses" ON public.courses;
+CREATE POLICY "Admins can manage courses"
+  ON public.courses FOR ALL
+  USING (
+    EXISTS (
+      SELECT 1 FROM public.admin_roles
+      WHERE user_id = auth.uid()
+    )
+  );
+
+-- Enrollments
+ALTER TABLE public.enrollments ENABLE ROW LEVEL SECURITY;
+
+DROP POLICY IF EXISTS "Users can view their own enrollments" ON public.enrollments;
+CREATE POLICY "Users can view their own enrollments"
+  ON public.enrollments FOR SELECT
+  USING (
+    EXISTS (
+      SELECT 1 FROM public.wallets
+      WHERE user_id = auth.uid() AND address = student_address
+    )
+  );
+
+DROP POLICY IF EXISTS "Users can create their own enrollments" ON public.enrollments;
+CREATE POLICY "Users can create their own enrollments"
+  ON public.enrollments FOR INSERT
+  WITH CHECK (
+    EXISTS (
+      SELECT 1 FROM public.wallets
+      WHERE user_id = auth.uid() AND address = student_address
+    )
+  );
+
+DROP POLICY IF EXISTS "Admins or course owners can update enrollments" ON public.enrollments;
+CREATE POLICY "Admins or course owners can update enrollments"
+  ON public.enrollments FOR UPDATE
+  USING (
+    EXISTS (
+      SELECT 1 FROM public.admin_roles
+      WHERE user_id = auth.uid()
+    ) OR
+    EXISTS (
+      SELECT 1 FROM public.courses c
+      JOIN public.wallets w ON c.owner = w.address
+      WHERE c.id = course_id AND w.user_id = auth.uid()
+    )
+  );