Fix: Setup-Wizard Redirect + market_news Migration

- Replace navigate() with window.location.href for full page reload
  after setup completion (fixes redirect loop back to /setup)
- Add migration 002: market_news table with indexes
- Remove unused useNavigate import

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

server/migrations/002_market_news.sql

@@ -0,0 +1,22 @@
+-- Migration 002: Market News table
+-- Written by n8n workflows, read by the dashboard.
+
+CREATE TABLE IF NOT EXISTS market_news (
+    id              SERIAL PRIMARY KEY,
+    source          VARCHAR(200) NOT NULL DEFAULT '',
+    title           TEXT NOT NULL,
+    url             TEXT NOT NULL DEFAULT '',
+    category        VARCHAR(100),
+    published_at    TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS idx_market_news_published
+    ON market_news (published_at DESC);
+
+CREATE INDEX IF NOT EXISTS idx_market_news_category
+    ON market_news (category);
+
+-- Record this migration
+INSERT INTO schema_version (version, description)
+VALUES (2, 'market_news table for n8n-sourced articles')
+ON CONFLICT (version) DO NOTHING;