feat: briefing auto-generate, pages overhaul (dashboard/screener/report/routines), delete routine

backend/internal/api/routines.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"net/http"
 	"strconv"
+	"time"
 
 	"github.com/go-chi/chi/v5"
 
@@ -11,6 +12,9 @@ import (
 	"flowsight/internal/store"
 )
 
+// todayUTC returns today's date (UTC) for briefing persistence.
+func todayUTC() string { return time.Now().UTC().Format("2006-01-02") }
+
 // ListRoutines serves GET /api/routines with last-run status.
 func (s *Server) ListRoutines(w http.ResponseWriter, r *http.Request) {
 	rows, err := s.DB.ListRoutines(s.userKey(r))
@@ -108,11 +112,23 @@ func (s *Server) RunHistory(w http.ResponseWriter, r *http.Request) {
 }
 
 // BriefingToday serves GET /api/briefing/today: latest payload + citations.
+// When no briefing exists yet it generates one on demand from current
+// snapshots (so the UI never shows an empty page), then persists it.
 func (s *Server) BriefingToday(w http.ResponseWriter, r *http.Request) {
 	date, payload, cites, err := s.DB.LatestBriefing()
 	if err != nil {
-		writeErr(w, http.StatusNotFound, "no briefing yet — run the morning-briefing routine")
-		return
+		uk := s.userKey(r)
+		p, cc, gerr := s.Engine.BriefingFor(r.Context(), uk)
+		if gerr != nil {
+			writeErr(w, http.StatusNotFound, "no briefing yet — subscribe to the morning-briefing routine")
+			return
+		}
+		ccJSON, _ := json.Marshal(cc)
+		if err := s.DB.SaveBriefing(todayUTC(), p, string(ccJSON)); err != nil {
+			writeErr(w, http.StatusBadGateway, "db: "+err.Error())
+			return
+		}
+		date, payload, cites = todayUTC(), p, string(ccJSON)
 	}
 	writeJSON(w, http.StatusOK, map[string]any{
 		"date": date, "payload": payload, "citations": cites,

backend/internal/routines/engine.go

@@ -146,6 +146,16 @@ func (e *Engine) deliver(ctx context.Context, r store.Routine, payload string, c
 	return e.Notifier.SendTo(ctx, e.UserKey, f, string(cc))
 }
 
+// BriefingFor runs the morning briefing scoped to owner (watchlist +
+// delivery) without needing a routines row.
+func (e *Engine) BriefingFor(ctx context.Context, owner string) (string, []model.Citation, error) {
+	scoped := *e
+	if owner != "" {
+		scoped.UserKey = owner
+	}
+	return scoped.Briefing(ctx)
+}
+
 // tickers returns the user's watchlist (never empty: falls back to demo set).
 func (e *Engine) tickers() []string {
 	wl, err := e.DB.Watchlist(e.UserKey)