fix: allow entering a queen's hatch year and marking color/number

The backend has always accepted hatchYear/markingColor/markingNumber
(Queen DTOs, Prisma schema), and the queens list even already renders
a "Schlupfjahr" field - but neither the create nor the edit form ever
exposed inputs for them, so no user could actually set hatchYear
through the UI. That silently broke the OLD_QUEEN dashboard alert
just added: it can only ever fire for colonies whose queen has a
hatchYear, and there was no way to record one.

Both forms now include Schlupfjahr, Zeichenfarbe and Zeichennummer.
Marking color is auto-suggested from the hatch year using the
internationally standardized queen marking color convention (last
digit of the year -> white/yellow/red/green/blue), editable like any
other suggestion.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

ApiCore-Frontend/src/lib/queens/marking-color.ts

@@ -0,0 +1,20 @@
+// Internationally standardized queen marking colors by the last digit of
+// the hatch year (used across European beekeeping regardless of country):
+// 1/6 white, 2/7 yellow, 3/8 red, 4/9 green, 5/0 blue.
+const MARKING_COLORS_BY_LAST_DIGIT: Record<number, string> = {
+  1: "Weiß",
+  6: "Weiß",
+  2: "Gelb",
+  7: "Gelb",
+  3: "Rot",
+  8: "Rot",
+  4: "Grün",
+  9: "Grün",
+  5: "Blau",
+  0: "Blau",
+};
+
+export function suggestMarkingColorForYear(hatchYear: number): string {
+  const lastDigit = ((hatchYear % 10) + 10) % 10;
+  return MARKING_COLORS_BY_LAST_DIGIT[lastDigit];
+}

ApiCore-Frontend/src/lib/queens/types.ts

@@ -32,15 +32,21 @@ export interface Queen {
 
 export interface CreateQueenInput {
   code: string;
+  hatchYear?: number;
   breed?: string;
   origin?: string;
+  markingColor?: string;
+  markingNumber?: string;
   motherQueenId?: string;
   notes?: string;
 }
 
 export interface UpdateQueenInput {
+  hatchYear?: number;
   breed?: string;
   origin?: string;
+  markingColor?: string;
+  markingNumber?: string;
   motherQueenId?: string;
   notes?: string;
   status?: QueenStatus;