feat: add Citations and WatchlistChat components, integrate with API

- Implemented Citations component to display citation data.
- Created WatchlistDrawer and ChatSidebar components for managing watchlists and AI chat functionality.
- Integrated API calls for watchlist management and chat interactions.
- Updated index.tsx to include new components in the main application layout.
- Added API client in lib/api.ts for structured API interactions.
- Developed Alerts, Dashboard, Portfolio, Routines, Screener, and Report pages with relevant data fetching and UI components.
- Introduced styles in tokens.css for consistent theming across the application.
- Configured TypeScript and Vite for project setup and development.

backend/internal/store/accuracy_test.go

@@ -0,0 +1,42 @@
+package store
+
+import (
+	"testing"
+	"time"
+)
+
+// ResolveDue: BUY older than 30d resolves against stored closes.
+func TestResolveDue(t *testing.T) {
+	db, err := Open(t.TempDir() + "/acc.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+	old := time.Now().AddDate(0, 0, -40).Format("2006-01-02")
+	if _, err := db.Exec(`INSERT INTO agent_accuracy(agent,ticker,prediction,predict_date)
+		VALUES('synthesizer','BBCA','BUY',?)`, old); err != nil {
+		t.Fatal(err)
+	}
+	// Rising closes: first bar 9000 -> last 9950 (+10.5%) => BUY hits.
+	payload := `[{"date":"` + old + `","close":9000,"volume":1},{"date":"` +
+		time.Now().Format("2006-01-02") + `","close":9950,"volume":1}]`
+	if err := db.SaveSnapshot("BBCA", time.Now().Format("2006-01-02"), "daily", payload); err != nil {
+		t.Fatal(err)
+	}
+	n, err := db.ResolveDue()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if n != 1 {
+		t.Fatalf("resolved = %d, want 1", n)
+	}
+	stats, _ := db.AccuracyStats()
+	if len(stats) != 1 || stats[0]["hits"] != 1 {
+		t.Fatalf("stats = %v, want 1 hit", stats)
+	}
+	// Second run: nothing due.
+	n, _ = db.ResolveDue()
+	if n != 0 {
+		t.Fatalf("resolved = %d, want 0", n)
+	}
+}