feat(reflexion): ToDo-Titel inline editierbar

ToDos in der Reflexion lassen sich per Klick auf den Titel korrigieren
(z. B. Tippfehler), Enter speichert / Escape bricht ab. Neuer Endpoint
dayEntry.editTodoTitle — nur eigene ToDos vom heutigen Berlin-Tag,
ändert den Titel in-place (Status/Reihenfolge/IDs bleiben).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/api/src/routers/day-entry.ts

@@ -209,6 +209,37 @@ export const dayEntryRouter = router({
       return result;
     }),
 
+  /**
+   * Einzelnen ToDo-Titel korrigieren (z. B. Tippfehler) — auch noch in der
+   * Reflexion. Erlaubt, solange das ToDo der eigenen Person gehört und vom
+   * heutigen Berlin-Tag ist (gleiche Editierbarkeits-Regel wie die Reflexion).
+   */
+  editTodoTitle: protectedProcedure
+    .input(DayEntrySchemas.editTodoTitleInput)
+    .mutation(async ({ ctx, input }) => {
+      const rows = await ctx.db
+        .select()
+        .from(todo)
+        .where(and(eq(todo.id, input.todoId), eq(todo.userId, ctx.user.id)))
+        .limit(1);
+      const existing = rows[0];
+      if (!existing) {
+        throw new TRPCError({ code: 'NOT_FOUND', message: 'ToDo nicht gefunden.' });
+      }
+      if (existing.date !== todayIso(new Date())) {
+        throw new TRPCError({
+          code: 'BAD_REQUEST',
+          message: 'ToDos eines Vortags können nicht mehr bearbeitet werden.',
+        });
+      }
+      const [updated] = await ctx.db
+        .update(todo)
+        .set({ title: input.title })
+        .where(eq(todo.id, input.todoId))
+        .returning();
+      return updated;
+    }),
+
   /**
    * Abend-Reflexion. Setzt Ampel + Trend, optional Blocker.
    */

apps/web/src/routes/reflexion.tsx

@@ -7,7 +7,7 @@ import { Button } from '../components/ui/Button';
 import { SkeletonCard } from '../components/ui/SkeletonCard';
 import { toast } from 'sonner';
 import { clsx } from 'clsx';
-import { Check, X, Minus, TrendingUp, TrendingDown, ArrowRight } from 'lucide-react';
+import { Check, X, Minus, TrendingUp, TrendingDown, ArrowRight, Pencil } from 'lucide-react';
 
 type Ampel = 'green' | 'amber' | 'red';
 type Trend = 'besser' | 'gleich' | 'schlechter';
@@ -128,7 +128,7 @@ function ReflectForm({
                 const status = todoStates[t.id]?.status ?? 'open';
                 return (
                   <li key={t.id} className="flex items-center gap-2">
-                    <span className="flex-1 text-sm">{t.title}</span>
+                    <EditableTodoTitle id={t.id} title={t.title} />
                     <div className="flex gap-1">
                       <StatusBtn
                         active={status === 'done'}
@@ -269,6 +269,91 @@ function ReflectForm({
   );
 }
 
+function EditableTodoTitle({ id, title }: { id: string; title: string }) {
+  const [editing, setEditing] = useState(false);
+  const [draft, setDraft] = useState(title);
+  const utils = trpc.useUtils();
+  const edit = trpc.dayEntry.editTodoTitle.useMutation({
+    onSuccess: async () => {
+      await utils.dayEntry.today.invalidate();
+      setEditing(false);
+    },
+  });
+
+  function save() {
+    const v = draft.trim();
+    if (!v || v === title) {
+      setEditing(false);
+      return;
+    }
+    edit.mutate({ todoId: id, title: v });
+  }
+
+  if (editing) {
+    return (
+      <div className="flex flex-1 items-center gap-1">
+        <input
+          ref={(el) => el?.focus()}
+          value={draft}
+          onChange={(e) => setDraft(e.target.value)}
+          onKeyDown={(e) => {
+            if (e.key === 'Enter') {
+              e.preventDefault();
+              save();
+            } else if (e.key === 'Escape') {
+              setDraft(title);
+              setEditing(false);
+            }
+          }}
+          maxLength={200}
+          aria-label="ToDo-Titel bearbeiten"
+          className="flex-1 rounded-[var(--radius-md)] border border-[var(--color-border)] bg-white px-2 py-1 text-sm focus:border-[var(--color-ink)] focus:outline-none"
+        />
+        <button
+          type="button"
+          onClick={save}
+          disabled={edit.isPending}
+          aria-label="Titel speichern"
+          title="Speichern"
+          className="inline-flex h-7 w-7 items-center justify-center rounded-[var(--radius-md)] border border-[var(--color-ink)] bg-[var(--color-ink)] text-[var(--color-brand-fg)]"
+        >
+          <Check size={14} />
+        </button>
+        <button
+          type="button"
+          onClick={() => {
+            setDraft(title);
+            setEditing(false);
+          }}
+          aria-label="Bearbeiten abbrechen"
+          title="Abbrechen"
+          className="inline-flex h-7 w-7 items-center justify-center rounded-[var(--radius-md)] border border-[var(--color-border)] text-[var(--color-ink-muted)] hover:border-[var(--color-border-strong)]"
+        >
+          <X size={14} />
+        </button>
+      </div>
+    );
+  }
+
+  return (
+    <button
+      type="button"
+      onClick={() => {
+        setDraft(title);
+        setEditing(true);
+      }}
+      title="Zum Bearbeiten klicken"
+      className="group flex flex-1 items-center gap-1.5 text-left text-sm"
+    >
+      <span>{title}</span>
+      <Pencil
+        size={12}
+        className="text-[var(--color-ink-faint)] opacity-0 transition-opacity group-hover:opacity-100"
+      />
+    </button>
+  );
+}
+
 function StatusBtn({
   active,
   onClick,

packages/shared/src/schemas/day-entry.ts

@@ -51,6 +51,12 @@ export const todoMutationInput = z.object({
 });
 export type TodoMutationInput = z.infer<typeof todoMutationInput>;
 
+export const editTodoTitleInput = z.object({
+  todoId: z.string().uuid(),
+  title: z.string().min(1).max(200),
+});
+export type EditTodoTitleInput = z.infer<typeof editTodoTitleInput>;
+
 export const markAbsentInput = z.object({
   from: z.string().regex(/^\d{4}-\d{2}-\d{2}$/),
   to: z.string().regex(/^\d{4}-\d{2}-\d{2}$/),