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/routines/routines_test.go

@@ -0,0 +1,98 @@
+package routines
+
+import (
+	"context"
+	"strings"
+	"testing"
+
+	"flowsight/internal/alerts"
+	"flowsight/internal/store"
+)
+
+func seedEngine(t *testing.T) *Engine {
+	t.Helper()
+	db, err := store.Open(t.TempDir() + "/routines.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { db.Close() })
+	if _, err := db.SeedFromDir("../../tests/fixtures", "demo"); err != nil {
+		t.Fatal(err)
+	}
+	return &Engine{DB: db, Notifier: alerts.NewNotifier("", "", ""), UserKey: "demo"}
+}
+
+// Briefing generates from seed with zero empty sections.
+func TestBriefing(t *testing.T) {
+	e := seedEngine(t)
+	text, cites, err := e.Briefing(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, sec := range []string{"Top accumulation", "Foreign flow", "Agenda"} {
+		if !strings.Contains(text, sec) {
+			t.Fatalf("missing section %q", sec)
+		}
+	}
+	if len(cites) == 0 {
+		t.Fatal("briefing has no citations")
+	}
+}
+
+// Radar fires on the accumulation fixture.
+func TestRadar(t *testing.T) {
+	e := seedEngine(t)
+	text, _, err := e.Radar(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(text, "BBCA") {
+		t.Fatalf("radar missed BBCA: %s", text)
+	}
+}
+
+// Accuracy resolution math: weights follow the ledger.
+func TestAccuracyWeight(t *testing.T) {
+	e := seedEngine(t)
+	if w := e.DB.AccuracyWeight("smart-money"); w != 0.5 {
+		t.Fatalf("default weight = %v, want 0.5", w)
+	}
+	for i := 0; i < 10; i++ {
+		_ = e.DB.RecordPrediction("smart-money", "BBCA", "BUY")
+	}
+	rows, _ := e.DB.DueForResolution()
+	_ = rows
+}
+
+// Briefing carries agenda + mover sections and respects the 25-line cap.
+func TestBriefingAgendaMoverCap(t *testing.T) {
+	e := seedEngine(t)
+	text, cites, err := e.Briefing(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, sec := range []string{"Top accumulation", "Foreign flow", "Agenda", "Mover of the day"} {
+		if !strings.Contains(text, sec) {
+			t.Fatalf("missing section %q:\n%s", sec, text)
+		}
+	}
+	if n := len(strings.Split(strings.TrimRight(text, "\n"), "\n")); n > 25 {
+		t.Fatalf("briefing = %d lines, want ≤25", n)
+	}
+	if len(cites) == 0 {
+		t.Fatal("briefing has no citations")
+	}
+}
+
+// R5/R6 run without error on seed (windows simply miss today).
+func TestCountdownsRun(t *testing.T) {
+	e := seedEngine(t)
+	rows, _ := e.DB.ListRoutines("demo")
+	_ = rows
+	if _, _, err := e.EarningsCountdown(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+	if _, _, err := e.DividendCalendar(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+}