diff --git a/Makefile b/Makefile
index 95d8cce6..435ea944 100644
--- a/Makefile
+++ b/Makefile
@@ -83,4 +83,27 @@ fix:
 	cargo fmt
 	cargo clippy --fix --allow-dirty --allow-staged
 
-.PHONY: check fmt fmt-check clippy test fix check-appcontext check-handler-deps check-handler-repos check-presentation-adapters check-federation-off-social check-social-crates-are-ap-free
+# Run the dev stack:
+#   server  (:3000, in the foreground, Ctrl-C stops it)
+#   worker  (background, log at /tmp/movies-diary-worker.log)
+#   spa     (:5173, background, log at /tmp/movies-diary-spa.log)
+# Tear down the background processes with `make dev-stop`.
+# .env enables EVENT_BUS_BACKEND=nats, so both binaries are built with the nats feature.
+dev: dev-worker dev-spa
+	cargo run -p server --features nats
+
+dev-stop:
+	-pkill -f '[t]arget.debug.worker' || true
+	-pkill -f '[s]pa/node_modules/[.]bin/vite' || true
+	@echo "dev stack stopped"
+
+dev-worker:
+	@bash -c 'nohup cargo run -p worker --features nats >> /tmp/movies-diary-worker.log 2>&1 & echo "worker → pid $$! (log: /tmp/movies-diary-worker.log)"'
+
+dev-spa:
+	@bash -c 'nohup npm --prefix spa run dev >> /tmp/movies-diary-spa.log 2>&1 & echo "spa    → pid $$! (log: /tmp/movies-diary-spa.log, http://localhost:5173)"'
+
+spa-dev:
+	@npm --prefix spa run dev
+
+.PHONY: check fmt fmt-check clippy test fix dev dev-stop dev-worker dev-spa spa-dev check-appcontext check-handler-deps check-handler-repos check-presentation-adapters check-federation-off-social check-social-crates-are-ap-free
diff --git a/spa/src/locales/en.json b/spa/src/locales/en.json
index f187cfce..385b36cc 100644
--- a/spa/src/locales/en.json
+++ b/spa/src/locales/en.json
@@ -267,14 +267,14 @@
     "seasons": "Seasons",
     "mediums": "How you watch",
     "rhythm": "When you watch",
-    "ratingLiftUp": "You rate {{genre}} higher than your own average — {{genreAvg}}★ vs {{userAvg}}★",
-    "ratingLiftDown": "You rate {{genre}} lower than your own average — {{genreAvg}}★ vs {{userAvg}}★",
+    "ratingLiftUp": "You rate <hl>{{genre}}</hl> higher than your own average — <hl>{{genreAvg}}</hl>★ vs <hl>{{userAvg}}</hl>★",
+    "ratingLiftDown": "You rate <hl>{{genre}}</hl> lower than your own average — <hl>{{genreAvg}}</hl>★ vs <hl>{{userAvg}}</hl>★",
     "yourAverage": "your average",
-    "seasonality": "{{genre}} is your {{month}} genre — {{multiplier}}× your yearly baseline",
-    "mediumTiming": "You watch {{medium}} on weekends {{multiplier}}× more than your baseline",
+    "seasonality": "<hl>{{genre}}</hl> is your <hl>{{month}}</hl> genre — <hl>{{multiplier}}</hl>× your yearly baseline",
+    "mediumTiming": "You watch <hl>{{medium}}</hl> on weekends <hl>{{multiplier}}</hl>× more than your baseline",
     "weekends": "weekends",
     "yourBaseline": "your baseline",
-    "rhythm": "You watch mostly {{start}}–{{end}} on {{days}}",
+    "rhythmBody": "You watch mostly <hl>{{start}}</hl>–<hl>{{end}}</hl> on <hl>{{days}}</hl>",
     "filmsSample": "{{count}} films"
   },
   "wrapup": {
diff --git a/spa/src/routes/_app/insights.tsx b/spa/src/routes/_app/insights.tsx
index 06ada321..2584fcee 100644
--- a/spa/src/routes/_app/insights.tsx
+++ b/spa/src/routes/_app/insights.tsx
@@ -1,6 +1,6 @@
 import { createFileRoute } from "@tanstack/react-router"
 import type { ReactNode } from "react"
-import { useTranslation } from "react-i18next"
+import { Trans, useTranslation } from "react-i18next"
 import {
   CalendarDays,
   Clapperboard,
@@ -26,6 +26,8 @@ export const Route = createFileRoute("/_app/insights")({
 const MONTH_BASE = new Date(2024, 0, 1) // any year; only the month name matters
 const MONDAY_BASE = new Date(2024, 2, 4) // 2024-03-04 is a Monday
 
+const hl = <span className="text-primary" />
+
 function isKind<K extends Insight["kind"]>(kind: K) {
   return (insight: Insight): insight is Extract<Insight, { kind: K }> => insight.kind === kind
 }
@@ -138,11 +140,17 @@ function RatingLiftCard({ insight }: RatingLiftCardProps) {
       <CardHeader className="pb-2">
         <CardTitle className="flex items-center gap-2 text-sm">
           <Trend className={`size-4 ${up ? "text-emerald-500" : "text-rose-500"}`} />
-          {t(up ? "insights.ratingLiftUp" : "insights.ratingLiftDown", {
-            genre: insight.genre,
-            genreAvg: insight.genre_avg.toFixed(1),
-            userAvg: insight.user_avg.toFixed(1),
-          })}
+          <span>
+            <Trans
+              i18nKey={up ? "insights.ratingLiftUp" : "insights.ratingLiftDown"}
+              values={{
+                genre: insight.genre,
+                genreAvg: insight.genre_avg.toFixed(1),
+                userAvg: insight.user_avg.toFixed(1),
+              }}
+              components={{ hl }}
+            />
+          </span>
         </CardTitle>
       </CardHeader>
       <CardContent>
@@ -161,17 +169,22 @@ function RatingLiftCard({ insight }: RatingLiftCardProps) {
 }
 
 function SeasonalityCard({ insight }: SeasonalityCardProps) {
-  const { t } = useTranslation()
   return (
     <Card>
       <CardHeader className="pb-2">
         <CardTitle className="flex items-center gap-2 text-sm">
           <CalendarDays className="size-4 text-primary" />
-          {t("insights.seasonality", {
-            genre: insight.genre,
-            multiplier: insight.multiplier.toFixed(1),
-            month: monthName(insight.month),
-          })}
+          <span>
+            <Trans
+              i18nKey="insights.seasonality"
+              values={{
+                genre: insight.genre,
+                multiplier: insight.multiplier.toFixed(1),
+                month: monthName(insight.month),
+              }}
+              components={{ hl }}
+            />
+          </span>
         </CardTitle>
       </CardHeader>
       <CardContent>
@@ -194,10 +207,16 @@ function MediumTimingCard({ insight }: MediumTimingCardProps) {
       <CardHeader className="pb-2">
         <CardTitle className="flex items-center gap-2 text-sm">
           <Clapperboard className="size-4 text-primary" />
-          {t("insights.mediumTiming", {
-            medium: mediumLabel(insight.medium, t),
-            multiplier: insight.multiplier.toFixed(1),
-          })}
+          <span>
+            <Trans
+              i18nKey="insights.mediumTiming"
+              values={{
+                medium: mediumLabel(insight.medium, t),
+                multiplier: insight.multiplier.toFixed(1),
+              }}
+              components={{ hl }}
+            />
+          </span>
         </CardTitle>
       </CardHeader>
       <CardContent>
@@ -216,17 +235,22 @@ function MediumTimingCard({ insight }: MediumTimingCardProps) {
 }
 
 function RhythmCard({ insight }: RhythmCardProps) {
-  const { t } = useTranslation()
   return (
     <Card>
       <CardHeader className="pb-2">
         <CardTitle className="flex items-center gap-2 text-sm">
           <Clock className="size-4 text-primary" />
-          {t("insights.rhythm", {
-            start: hourLabel(insight.peak_hour_start),
-            end: hourLabel(insight.peak_hour_end),
-            days: dayNames(insight.top_days).join(", "),
-          })}
+          <span>
+            <Trans
+              i18nKey="insights.rhythmBody"
+              values={{
+                start: hourLabel(insight.peak_hour_start),
+                end: hourLabel(insight.peak_hour_end),
+                days: dayNames(insight.top_days).join(", "),
+              }}
+              components={{ hl }}
+            />
+          </span>
         </CardTitle>
       </CardHeader>
       <CardContent>