chore(targets): deprecate the targets page and drop it from the menu

Target editing now lives inline on the insights pages, so the standalone
targets page is no longer a navigation destination. Remove its sidebar
and bottom-nav (overflow) entries and add a top deprecation banner that
points the user at the insights pages and notes the page will be removed
in a future release.

The page stays routable: the /zielwerte to /targets redirect remains and
the route still renders. Removal later is UI-only because the insights
panel consumes the same targets read and threshold-override write. New
deprecation strings land across all six locales.

src/components/layout/__tests__/bottom-nav.test.tsx

@@ -5,9 +5,12 @@
  *   - exactly five primary links + one "More" button render in the strip
  *   - the More button is keyboard-reachable as a `<button>` with
  *     `aria-haspopup="dialog"`
- *   - Targets + Achievements live in the More sheet (closed by default
- *     under SSR), not in the always-visible strip
+ *   - Achievements lives in the More sheet (closed by default under SSR),
+ *     not in the always-visible strip
  *   - WCAG 2.5.5 floor: every entry is `min-h-11 min-w-11`
+ *
+ * v1.8.6 — the Targets (Zielwerte) page is deprecated and dropped from
+ * the menu, so it no longer appears in the strip or the overflow set.
  */
 import { describe, expect, it, vi } from "vitest";
 import { renderToStaticMarkup } from "react-dom/server";
@@ -60,6 +63,15 @@ describe("<BottomNav> 5+More layout", () => {
     expect(matches.length).toBeGreaterThanOrEqual(6);
   });
 
+  it("no longer lists the deprecated /targets entry (v1.8.6)", () => {
+    // Targets was dropped from the OVERFLOW set; the strip never carried
+    // it. The closed-sheet SSR render must therefore contain no /targets
+    // link — a regression net against the entry creeping back into the
+    // primary strip or the overflow set.
+    const html = render();
+    expect(html).not.toContain('href="/targets"');
+  });
+
   it("More button carries an accessible label", () => {
     const html = render();
     // Attribute order isn't guaranteed by React's renderer, so match

src/components/layout/__tests__/sidebar-nav.test.tsx

@@ -84,6 +84,18 @@ describe("<SidebarNav> bug-report toggle", () => {
   });
 });
 
+describe("<SidebarNav> targets deprecation (v1.8.6)", () => {
+  it("no longer renders the deprecated /targets entry", () => {
+    // The Targets (Zielwerte) page is deprecated; target editing moved
+    // inline into Insights, so the sidebar drops the entry. The main nav
+    // links render into the SSR markup, so asserting absence here is a
+    // real regression net (Insights, the sibling that stays, still shows).
+    const html = render();
+    expect(html).not.toContain('href="/targets"');
+    expect(html).toContain('href="/insights"');
+  });
+});
+
 describe("<SidebarNav> admin entry mirrors Settings (no sub-item expansion)", () => {
   // v1.4.16 A1: the maintainer reported the global sidebar expanding admin
   // sub-items on `/admin/*` was unwanted UX — the in-shell `<AdminShell>`

src/components/layout/bottom-nav.tsx

@@ -6,7 +6,6 @@ import {
   Lightbulb,
   MoreHorizontal,
   Pill,
-  Target,
   Trophy,
   Waves,
 } from "lucide-react";
@@ -35,10 +34,15 @@ interface NavLink {
 // just-pass on iPhone-13-mini-class screens. The mobile audit
 // recommended 5+More — so the four most-used surfaces stay in the
 // strip (Home, Measurements, Mood, Medications) plus Insights as
-// the fifth, and Targets + Achievements move into a "More" sheet.
+// the fifth, and Achievements moves into a "More" sheet.
 //
 // Order is preserved relative to the v1.4.15 bottom-nav so muscle
 // memory keeps working for the four core actions.
+//
+// v1.8.6 — the Targets (Zielwerte) page is deprecated: target editing
+// moved inline into Insights, so its overflow entry is gone. The page
+// stays routable (the `/zielwerte`→`/targets` proxy redirect remains)
+// but no longer appears in the menu.
 const PRIMARY: ReadonlyArray<NavLink> = [
   { href: "/", tKey: "nav.dashboard", icon: Home },
   { href: "/measurements", tKey: "nav.measurements", icon: Activity },
@@ -48,7 +52,6 @@ const PRIMARY: ReadonlyArray<NavLink> = [
 ];
 
 const OVERFLOW: ReadonlyArray<NavLink> = [
-  { href: "/targets", tKey: "nav.targets", icon: Target },
   { href: "/achievements", tKey: "nav.achievements", icon: Trophy },
 ];
 

src/components/layout/sidebar-nav.tsx

@@ -17,7 +17,6 @@ import {
   Settings,
   Shield,
   Sun,
-  Target,
   Trophy,
   Waves,
 } from "lucide-react";
@@ -73,12 +72,6 @@ const navItems = [
     icon: Lightbulb,
     tourId: "nav-insights",
   },
-  {
-    href: "/targets",
-    tKey: "nav.targets",
-    icon: Target,
-    tourId: "nav-targets",
-  },
   {
     href: "/achievements",
     tKey: "nav.achievements",