add contact tracker data layer: schemas, hooks, db queries

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/features/kontakte/schema.test.ts

@@ -0,0 +1,45 @@
+import { describe, expect, it } from "vitest";
+import { kontaktFormSchema, therapeutFormSchema } from "./schema";
+
+describe("therapeutFormSchema", () => {
+	it("accepts valid therapist", () => {
+		const result = therapeutFormSchema.safeParse({
+			name: "Dr. Schmidt",
+			plz: "10115",
+			stadt: "Berlin",
+		});
+		expect(result.success).toBe(true);
+	});
+
+	it("requires name", () => {
+		const result = therapeutFormSchema.safeParse({ name: "" });
+		expect(result.success).toBe(false);
+	});
+
+	it("allows empty optional fields", () => {
+		const result = therapeutFormSchema.safeParse({ name: "Dr. Schmidt" });
+		expect(result.success).toBe(true);
+	});
+});
+
+describe("kontaktFormSchema", () => {
+	it("accepts valid contact", () => {
+		const result = kontaktFormSchema.safeParse({
+			therapeut_id: 1,
+			datum: "2026-03-10",
+			kanal: "telefon",
+			ergebnis: "absage",
+		});
+		expect(result.success).toBe(true);
+	});
+
+	it("rejects missing date", () => {
+		const result = kontaktFormSchema.safeParse({
+			therapeut_id: 1,
+			datum: "",
+			kanal: "telefon",
+			ergebnis: "absage",
+		});
+		expect(result.success).toBe(false);
+	});
+});