Revert "feat(topics): add the Topics preview area, its navigation entry and its switch"

This reverts commit c68e833dcc.

src/components/labs/lab-trend-card.tsx

@@ -6,7 +6,6 @@ import { Card, CardContent, CardHeader } from "@/components/ui/card";
 import { TileHeader } from "@/components/insights/tile-header";
 import { useFormatters, useTranslations } from "@/lib/i18n/context";
 
-import { labTrendLines } from "./lab-trend-lines";
 import type { BiomarkerTrendDto } from "./types";
 
 /**
@@ -28,12 +27,44 @@ export function LabTrendCard({
   const fmt = useFormatters();
   if (!trend || trend.status !== "ok") return null;
 
-  const { slope: slopeLine, projection: projectionLine } = labTrendLines(
-    trend,
+  const digits = Math.abs(trend.slopePerYear) >= 10 ? 0 : 2;
+  const per = (v: number) => fmt.number(Math.abs(v), digits);
+  const direction =
+    trend.slopePerYear > 0
+      ? "rising"
+      : trend.slopePerYear < 0
+        ? "falling"
+        : "flat";
+  const slopeLine = t(`labs.trend.slope.${direction}`, {
+    amount: per(trend.slopePerYear),
     unit,
-    t,
-    fmt,
-  );
+    n: trend.n,
+    since: fmt.dateShortSmartCalendar(trend.firstAt),
+  });
+  const projectionLine =
+    trend.projection === "exits" && trend.exitDate
+      ? t(`labs.trend.projection.exits.${trend.exitBound ?? "high"}`, {
+          date: fmt.dateShortSmartCalendar(trend.exitDate),
+        })
+      : trend.projection === "no_band"
+        ? null
+        : trend.projection === "stale"
+          ? t("labs.trend.projection.stale", {
+              date: fmt.dateShortSmartCalendar(trend.lastAt),
+            })
+          : trend.projection === "beyond_horizon"
+            ? t(
+                trend.horizonCapped
+                  ? "labs.trend.projection.beyond_horizon_capped"
+                  : "labs.trend.projection.beyond_horizon",
+                {
+                  years: fmt.number(
+                    trend.horizonYears,
+                    trend.horizonCapped ? 0 : 1,
+                  ),
+                },
+              )
+            : t(`labs.trend.projection.${trend.projection}`);
 
   return (
     <Card data-slot="lab-trend">

src/components/labs/lab-trend-lines.ts

@@ -1,60 +0,0 @@
-import type { Formatters } from "@/lib/format-locale";
-
-import type { BiomarkerTrendDto } from "./types";
-
-type Translate = (
-  key: string,
-  params?: Record<string, string | number>,
-) => string;
-
-/**
- * The two sentences a lab trend reads as: the slope across the readings, and
- * where the straight line would meet the reference band (or why it is not
- * drawn). Shared by the marker page's trend card and the metabolism topic, so
- * one trend is never worded two ways.
- */
-export function labTrendLines(
-  trend: Extract<BiomarkerTrendDto, { status: "ok" }>,
-  unit: string,
-  t: Translate,
-  fmt: Formatters,
-): { slope: string; projection: string | null } {
-  const digits = Math.abs(trend.slopePerYear) >= 10 ? 0 : 2;
-  const direction =
-    trend.slopePerYear > 0
-      ? "rising"
-      : trend.slopePerYear < 0
-        ? "falling"
-        : "flat";
-  const slope = t(`labs.trend.slope.${direction}`, {
-    amount: fmt.number(Math.abs(trend.slopePerYear), digits),
-    unit,
-    n: trend.n,
-    since: fmt.dateShortSmartCalendar(trend.firstAt),
-  });
-  const projection =
-    trend.projection === "exits" && trend.exitDate
-      ? t(`labs.trend.projection.exits.${trend.exitBound ?? "high"}`, {
-          date: fmt.dateShortSmartCalendar(trend.exitDate),
-        })
-      : trend.projection === "no_band"
-        ? null
-        : trend.projection === "stale"
-          ? t("labs.trend.projection.stale", {
-              date: fmt.dateShortSmartCalendar(trend.lastAt),
-            })
-          : trend.projection === "beyond_horizon"
-            ? t(
-                trend.horizonCapped
-                  ? "labs.trend.projection.beyond_horizon_capped"
-                  : "labs.trend.projection.beyond_horizon",
-                {
-                  years: fmt.number(
-                    trend.horizonYears,
-                    trend.horizonCapped ? 0 : 1,
-                  ),
-                },
-              )
-            : t(`labs.trend.projection.${trend.projection}`);
-  return { slope, projection };
-}