refactor: inject the database into services via a constructor

Pilot on the categories service: a CategoriesService class holds the Drizzle
handle, and services/index.ts wires the real instance once for the server while
tests build their own on an in-memory database. AppDatabase moves from
groceries.ts to db/types.ts.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/server/services/grocery-actions.ts b/src/lib/server/services/grocery-actions.ts
index cedb46e..2eff205 100644
--- a/src/lib/server/services/grocery-actions.ts
+++ b/src/lib/server/services/grocery-actions.ts
@@ -1,6 +1,6 @@
 import { fail, redirect, type ActionFailure } from '@sveltejs/kit';
 import { addOrUncheck, loadUnchecked, toggle } from './groceries';
-import { add as addCategory } from './categories';
+import { categoriesService } from '$lib/server/services';
 import { numericId, parseFormString, parseOptionalNumber } from './validation';
 import { isUniqueViolation } from '$lib/server/db/errors';
 
@@ -52,7 +52,7 @@ export async function addCategoryAction(request: Request) {
 	}
 
 	try {
-		await addCategory(name);
+		await categoriesService.add(name);
 	} catch (error) {
 		if (isUniqueViolation(error)) {
 			return fail(400, { error: 'Cette catégorie existe déjà' });