feat: complete launch & marketing layer

- Add marketing pages: blog, changelog, roadmap, waitlist, security, maintenance
- Add GDPR cookie consent banner with preference modal
- Add referral system with API routes for code generation/tracking
- Add waitlist API with referral support
- Add PWA support: manifest, service worker, install prompt
- Add onboarding flow with 6-step guided tour
- Add in-app notification center with bell dropdown
- Add admin launch checklist (32 items across 8 categories)
- Update landing page with trust badges
- Add Open Graph image and favicon
- Configure ESLint for PWA install patterns
- Add LAUNCH_CHECKLIST.md with go-to-market guide

Supabase migrations for:
- blog_posts and blog_categories tables
- waitlist_signups table
- roadmap_items table
- launch_checklist_items table

supabase/migrations/XXX_roadmap_tables.sql

@@ -0,0 +1,45 @@
+-- Roadmap Tables for Feature Requests and Voting
+-- Migration for Route Commerce
+
+CREATE TABLE IF NOT EXISTS roadmap_items (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    title TEXT NOT NULL,
+    description TEXT,
+    status TEXT DEFAULT 'planned' CHECK (status IN ('planned', 'in_progress', 'shipped')),
+    category TEXT,
+    upvotes INTEGER DEFAULT 0,
+    created_by TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+CREATE TABLE IF NOT EXISTS roadmap_votes (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    item_id UUID REFERENCES roadmap_items(id) ON DELETE CASCADE,
+    visitor_id TEXT NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    UNIQUE(item_id, visitor_id)
+);
+
+-- Indexes
+CREATE INDEX IF NOT EXISTS idx_roadmap_status ON roadmap_items(status);
+CREATE INDEX IF NOT EXISTS idx_roadmap_category ON roadmap_items(category);
+CREATE INDEX IF NOT EXISTS idx_roadmap_upvotes ON roadmap_items(upvotes DESC);
+CREATE INDEX IF NOT EXISTS idx_roadmap_votes_item ON roadmap_votes(item_id);
+
+-- Grant permissions
+GRANT SELECT ON roadmap_items TO anon;
+GRANT SELECT, INSERT ON roadmap_votes TO anon;
+GRANT ALL ON roadmap_items TO authenticated;
+GRANT ALL ON roadmap_votes TO authenticated;
+GRANT ALL ON roadmap_items TO service_role;
+GRANT ALL ON roadmap_votes TO service_role;
+
+-- Seed some initial items
+INSERT INTO roadmap_items (title, description, status, category, upvotes) VALUES
+    ('Mobile App (iOS & Android)', 'Native apps for field workers and delivery drivers', 'in_progress', 'Mobile', 234),
+    ('SMS Campaigns', 'Text message marketing and notifications', 'planned', 'Communication', 98),
+    ('Route Optimization', 'AI-powered route planning for deliveries', 'planned', 'Logistics', 167),
+    ('Customer Loyalty Program', 'Points, rewards, and referral tracking', 'planned', 'Marketing', 112),
+    ('POS Integration (Clover, Toast)', 'Additional POS system integrations', 'planned', 'Integrations', 76)
+ON CONFLICT DO NOTHING;