feat: backend improvements - reminder tracking, share stock status, planner notifications (#145)

- Separate stock/intake reminder tracking in DB with dedicated columns
- Add shareStockStatus setting to control stock visibility on shared links
- Rewrite planner notification to support both email and Shoutrrr push
- Add push notification footer text for intake and stock reminders
- New DB migrations: stock_reminder_tracking (0006), share_stock_status (0007)
- Update backend i18n with demandCalculator section and critically low text
- Add 514 passing backend tests including new coverage for all changes

backend/src/test/share.test.ts

@@ -10,6 +10,7 @@ import {
 	createTestMedication,
 	createTestShareToken,
 	createTestUser,
+	setUserSettings,
 	type TestContext,
 } from "./setup.js";
 
@@ -141,6 +142,14 @@ async function registerShareRoutes(ctx: TestContext) {
 
 		const lowStockDays = settingsResult.rows.length > 0 ? (settingsResult.rows[0].low_stock_days as number) : 30;
 
+		// Get shareStockStatus setting
+		const shareStockResult = await client.execute({
+			sql: `SELECT share_stock_status FROM user_settings WHERE user_id = ?`,
+			args: [share.user_id],
+		});
+		const shareStockStatus =
+			shareStockResult.rows.length > 0 ? Boolean(shareStockResult.rows[0].share_stock_status ?? 1) : true;
+
 		return {
 			takenBy: share.taken_by,
 			sharedBy: share.owner_username,
@@ -149,6 +158,7 @@ async function registerShareRoutes(ctx: TestContext) {
 			stockThresholds: {
 				lowStockDays,
 			},
+			shareStockStatus,
 		};
 	});
 
@@ -421,6 +431,41 @@ describe("Share Link API", () => {
 			expect(med.blisters).toHaveLength(1);
 			expect(med.blisters[0].usage).toBe(1);
 			expect(med.blisters[0].every).toBe(1);
+
+			// shareStockStatus should default to true
+			expect(data.shareStockStatus).toBe(true);
+		});
+
+		it("should respect shareStockStatus setting when disabled", async () => {
+			// Create medication
+			await createTestMedication(ctx.client, {
+				userId,
+				name: "TestMed",
+				takenBy: ["Daniel"],
+				packCount: 1,
+				blistersPerPack: 1,
+				pillsPerBlister: 10,
+				looseTablets: 0,
+				blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+			});
+
+			// Set shareStockStatus to false
+			await setUserSettings(ctx.client, { userId, shareStockStatus: false });
+
+			// Create share token
+			const token = await createTestShareToken(ctx.client, {
+				userId,
+				takenBy: "Daniel",
+				scheduleDays: 30,
+			});
+
+			const response = await ctx.app.inject({
+				method: "GET",
+				url: `/share/${token}`,
+			});
+
+			expect(response.statusCode).toBe(200);
+			expect(response.json().shareStockStatus).toBe(false);
 		});
 
 		it("should return 404 for invalid token", async () => {