feat: add template library for browsing and adding defaults

Replace auto-seed with a browsable template library. Users can
selectively add built-in templates to their collection via a
BookOpen icon or the empty-state prompt. Each library template
tracks its origin via libraryId to prevent duplicates.

- Extract default templates to shared $lib/data/defaultTemplates.ts
- Add GET/POST /api/fitness/templates/library endpoint
- Add library modal with add/added state per template
- Keep seed endpoint as fallback (imports from shared data)

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "homepage",
-	"version": "1.24.1",
+	"version": "1.25.0",
 	"private": true,
 	"type": "module",
 	"scripts": {

src/lib/data/defaultTemplates.ts

@@ -0,0 +1,91 @@
+/**
+ * Built-in workout template library.
+ * Each template has a stable `id` for dedup (so users can't add the same one twice).
+ */
+export const defaultTemplates = [
+	{
+		id: 'default-pull',
+		name: 'Day 1 - Pull',
+		description: 'Back, biceps, and shoulders pull day',
+		exercises: [
+			{ exerciseId: 'bent-over-row-barbell', sets: [{ reps: 10, weight: 60, rpe: 7 }, { reps: 10, weight: 60, rpe: 8 }, { reps: 10, weight: 60, rpe: 9 }], restTime: 120 },
+			{ exerciseId: 'pull-up', sets: [{ reps: 6, rpe: 8 }, { reps: 6, rpe: 8 }, { reps: 6, rpe: 9 }], restTime: 120 },
+			{ exerciseId: 'incline-row-dumbbell', sets: [{ reps: 12, weight: 16, rpe: 7 }, { reps: 12, weight: 16, rpe: 8 }], restTime: 90 },
+			{ exerciseId: 'upright-row-barbell', sets: [{ reps: 12, weight: 30, rpe: 7 }, { reps: 12, weight: 30, rpe: 8 }], restTime: 90 },
+			{ exerciseId: 'decline-crunch', sets: [{ reps: 15, rpe: 7 }, { reps: 15, rpe: 8 }], restTime: 60 },
+			{ exerciseId: 'lateral-raise-dumbbell', sets: [{ reps: 15, weight: 10, rpe: 7 }, { reps: 15, weight: 10, rpe: 8 }], restTime: 90 },
+			{ exerciseId: 'front-raise-dumbbell', sets: [{ reps: 10, weight: 10, rpe: 7 }, { reps: 10, weight: 10, rpe: 8 }], restTime: 90 },
+		]
+	},
+	{
+		id: 'default-push',
+		name: 'Day 2 - Push',
+		description: 'Chest, triceps, and biceps push day',
+		exercises: [
+			{ exerciseId: 'bench-press-barbell', sets: [{ reps: 8, weight: 80, rpe: 7 }, { reps: 8, weight: 80, rpe: 8 }, { reps: 8, weight: 80, rpe: 9 }], restTime: 120 },
+			{ exerciseId: 'incline-bench-press-barbell', sets: [{ reps: 10, weight: 60, rpe: 7 }, { reps: 10, weight: 60, rpe: 8 }], restTime: 120 },
+			{ exerciseId: 'skullcrusher-dumbbell', sets: [{ reps: 15, weight: 15, rpe: 7 }, { reps: 15, weight: 15, rpe: 8 }], restTime: 90 },
+			{ exerciseId: 'bench-press-close-grip-barbell', sets: [{ reps: 10, weight: 60, rpe: 7 }, { reps: 10, weight: 60, rpe: 8 }], restTime: 120 },
+			{ exerciseId: 'hammer-curl-dumbbell', sets: [{ reps: 15, weight: 12, rpe: 7 }, { reps: 15, weight: 12, rpe: 8 }], restTime: 90 },
+			{ exerciseId: 'bicep-curl-dumbbell', sets: [{ reps: 15, weight: 10, rpe: 7 }, { reps: 15, weight: 10, rpe: 8 }], restTime: 90 },
+		]
+	},
+	{
+		id: 'default-legs',
+		name: 'Day 3 - Legs',
+		description: 'Quad, hamstring, and calf focused leg day',
+		exercises: [
+			{ exerciseId: 'squat-barbell', sets: [{ reps: 8, weight: 80, rpe: 7 }, { reps: 8, weight: 80, rpe: 8 }, { reps: 8, weight: 80, rpe: 9 }], restTime: 150 },
+			{ exerciseId: 'romanian-deadlift-barbell', sets: [{ reps: 10, weight: 70, rpe: 7 }, { reps: 10, weight: 70, rpe: 8 }, { reps: 10, weight: 70, rpe: 9 }], restTime: 120 },
+			{ exerciseId: 'bulgarian-split-squat-dumbbell', sets: [{ reps: 10, weight: 16, rpe: 7 }, { reps: 10, weight: 16, rpe: 8 }], restTime: 120 },
+			{ exerciseId: 'calf-raise-standing', sets: [{ reps: 15, rpe: 7 }, { reps: 15, rpe: 8 }, { reps: 15, rpe: 9 }], restTime: 60 },
+		]
+	},
+	{
+		id: 'default-upper',
+		name: 'Day 4 - Upper',
+		description: 'Full upper body day — shoulders, chest, back, and core',
+		exercises: [
+			{ exerciseId: 'overhead-press-barbell', sets: [{ reps: 8, weight: 40, rpe: 7 }, { reps: 8, weight: 40, rpe: 8 }], restTime: 120 },
+			{ exerciseId: 'bench-press-dumbbell', sets: [{ reps: 10, weight: 28, rpe: 7 }, { reps: 10, weight: 28, rpe: 8 }], restTime: 120 },
+			{ exerciseId: 'chin-up', sets: [{ reps: 6, rpe: 8 }, { reps: 6, rpe: 9 }], restTime: 120 },
+			{ exerciseId: 'bench-press-close-grip-barbell', sets: [{ reps: 10, weight: 60, rpe: 7 }, { reps: 10, weight: 60, rpe: 8 }], restTime: 120 },
+			{ exerciseId: 'decline-crunch', sets: [{ reps: 15, rpe: 7 }, { reps: 15, rpe: 8 }], restTime: 60 },
+			{ exerciseId: 'flat-leg-raise', sets: [{ reps: 15, rpe: 7 }, { reps: 15, rpe: 8 }], restTime: 60 },
+		]
+	},
+	{
+		id: 'default-lower',
+		name: 'Day 5 - Lower',
+		description: 'Glute, quad, and hamstring focused lower day',
+		exercises: [
+			{ exerciseId: 'front-squat-barbell', sets: [{ reps: 8, weight: 60, rpe: 7 }, { reps: 8, weight: 60, rpe: 8 }, { reps: 8, weight: 60, rpe: 9 }], restTime: 150 },
+			{ exerciseId: 'romanian-deadlift-dumbbell', sets: [{ reps: 10, weight: 24, rpe: 7 }, { reps: 10, weight: 24, rpe: 8 }], restTime: 120 },
+			{ exerciseId: 'hip-thrust-barbell', sets: [{ reps: 10, weight: 60, rpe: 7 }, { reps: 10, weight: 60, rpe: 8 }], restTime: 120 },
+			{ exerciseId: 'goblet-squat-dumbbell', sets: [{ reps: 12, weight: 20, rpe: 7 }, { reps: 12, weight: 20, rpe: 8 }], restTime: 90 },
+			{ exerciseId: 'calf-raise-standing', sets: [{ reps: 15, rpe: 7 }, { reps: 15, rpe: 8 }], restTime: 60 },
+		]
+	},
+	{
+		id: 'default-stretching',
+		name: 'Day 6 - Stretching',
+		description: 'Full-body stretching — all muscle groups, no equipment (~30 min)',
+		exercises: [
+			{ exerciseId: 'neck-circle-stretch', sets: [{ duration: 1.5 }, { duration: 1.5 }], restTime: 15 },
+			{ exerciseId: 'side-push-neck-stretch', sets: [{ duration: 1 }, { duration: 1 }], restTime: 15 },
+			{ exerciseId: 'seated-shoulder-flexor-stretch-bent-knee', sets: [{ duration: 1 }, { duration: 1 }], restTime: 15 },
+			{ exerciseId: 'shoulder-stretch-behind-back', sets: [{ duration: 1 }, { duration: 1 }], restTime: 15 },
+			{ exerciseId: 'elbows-back-stretch', sets: [{ duration: 1 }, { duration: 1 }], restTime: 15 },
+			{ exerciseId: 'back-pec-stretch', sets: [{ duration: 1 }, { duration: 1 }], restTime: 15 },
+			{ exerciseId: 'cow-stretch', sets: [{ duration: 1.5 }, { duration: 1.5 }], restTime: 15 },
+			{ exerciseId: 'thoracic-bridge', sets: [{ duration: 1 }, { duration: 1 }], restTime: 15 },
+			{ exerciseId: 'butterfly-yoga-pose', sets: [{ duration: 1.5 }, { duration: 1.5 }], restTime: 15 },
+			{ exerciseId: 'seated-single-leg-hamstring-stretch', sets: [{ duration: 1 }, { duration: 1 }], restTime: 15 },
+			{ exerciseId: 'kneeling-toe-up-hamstring-stretch', sets: [{ duration: 1 }, { duration: 1 }], restTime: 15 },
+			{ exerciseId: 'side-lunge-stretch', sets: [{ duration: 1 }, { duration: 1 }], restTime: 15 },
+			{ exerciseId: 'lying-lower-back-stretch', sets: [{ duration: 1.5 }, { duration: 1.5 }], restTime: 15 },
+			{ exerciseId: 'calf-stretch-wall', sets: [{ duration: 1 }, { duration: 1 }], restTime: 15 },
+			{ exerciseId: 'elbow-flexor-stretch', sets: [{ duration: 1 }, { duration: 1 }], restTime: 15 },
+		]
+	}
+];

src/lib/js/fitnessI18n.ts

@@ -115,7 +115,11 @@ const translations: Translations = {
 	templates: { en: 'Templates', de: 'Vorlagen' },
 	schedule: { en: 'Schedule', de: 'Zeitplan' },
 	my_templates: { en: 'My Templates', de: 'Meine Vorlagen' },
-	no_templates_yet: { en: 'No templates yet. Create one or start an empty workout.', de: 'Noch keine Vorlagen. Erstelle eine oder starte ein leeres Training.' },
+	no_templates_yet: { en: 'No templates yet. Browse the library or create your own.', de: 'Noch keine Vorlagen. Stöbere in der Bibliothek oder erstelle deine eigene.' },
+	template_library: { en: 'Template Library', de: 'Vorlagen-Bibliothek' },
+	browse_library: { en: 'Browse Library', de: 'Bibliothek durchsuchen' },
+	template_added: { en: 'Template added', de: 'Vorlage hinzugefügt' },
+	loading: { en: 'Loading', de: 'Laden' },
 	edit_template: { en: 'Edit Template', de: 'Vorlage bearbeiten' },
 	new_template: { en: 'New Template', de: 'Neue Vorlage' },
 	template_name_placeholder: { en: 'Template name', de: 'Vorlagenname' },

src/models/WorkoutTemplate.ts

@@ -25,6 +25,7 @@ export interface IWorkoutTemplate {
   exercises: IExercise[];
   createdBy: string; // username/nickname of the person who created the template
   isPublic?: boolean; // whether other users can see/use this template
+  libraryId?: string; // tracks which built-in library template this was created from
   createdAt?: Date;
   updatedAt?: Date;
 }
@@ -126,6 +127,10 @@ const WorkoutTemplateSchema = new mongoose.Schema(
     isPublic: {
       type: Boolean,
       default: false
+    },
+    libraryId: {
+      type: String,
+      default: undefined
     }
   },
   {

src/routes/api/fitness/templates/library/+server.ts

@@ -0,0 +1,58 @@
+import { json } from '@sveltejs/kit';
+import type { RequestHandler } from './$types';
+import { requireAuth } from '$lib/server/middleware/auth';
+import { dbConnect } from '$utils/db';
+import { WorkoutTemplate } from '$models/WorkoutTemplate';
+import { defaultTemplates } from '$lib/data/defaultTemplates';
+
+// GET /api/fitness/templates/library — list available library templates
+// Returns each template with an `added` flag if user already has it
+export const GET: RequestHandler = async ({ locals }) => {
+	const user = await requireAuth(locals);
+	await dbConnect();
+
+	// Find which library templates the user already saved (by libraryId)
+	const existing = await WorkoutTemplate.find(
+		{ createdBy: user.nickname, libraryId: { $exists: true, $ne: null } },
+		{ libraryId: 1 }
+	).lean();
+	const addedIds = new Set(existing.map((t: any) => t.libraryId));
+
+	const library = defaultTemplates.map((t) => ({
+		...t,
+		added: addedIds.has(t.id),
+	}));
+
+	return json({ templates: library });
+};
+
+// POST /api/fitness/templates/library — add a library template to user's collection
+export const POST: RequestHandler = async ({ request, locals }) => {
+	const user = await requireAuth(locals);
+	await dbConnect();
+
+	const { id } = await request.json();
+	const libTemplate = defaultTemplates.find((t) => t.id === id);
+	if (!libTemplate) {
+		return json({ error: 'Template not found in library' }, { status: 404 });
+	}
+
+	// Prevent duplicates
+	const exists = await WorkoutTemplate.exists({
+		createdBy: user.nickname,
+		libraryId: id
+	});
+	if (exists) {
+		return json({ error: 'Template already added' }, { status: 409 });
+	}
+
+	const template = await WorkoutTemplate.create({
+		name: libTemplate.name,
+		description: libTemplate.description,
+		exercises: libTemplate.exercises,
+		libraryId: libTemplate.id,
+		createdBy: user.nickname,
+	});
+
+	return json({ template }, { status: 201 });
+};

src/routes/api/fitness/templates/seed/+server.ts

@@ -3,411 +3,7 @@ import type { RequestHandler } from './$types';
 import { requireAuth } from '$lib/server/middleware/auth';
 import { dbConnect } from '$utils/db';
 import { WorkoutTemplate } from '$models/WorkoutTemplate';
-
+import { defaultTemplates } from '$lib/data/defaultTemplates';
-const defaultTemplates = [
-	{
-		name: 'Day 1 - Pull',
-		description: 'Back, biceps, and shoulders pull day',
-		exercises: [
-			{
-				exerciseId: 'bent-over-row-barbell',
-				sets: [
-					{ reps: 10, weight: 60, rpe: 7 },
-					{ reps: 10, weight: 60, rpe: 8 },
-					{ reps: 10, weight: 60, rpe: 9 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'pull-up',
-				sets: [
-					{ reps: 6, rpe: 8 },
-					{ reps: 6, rpe: 8 },
-					{ reps: 6, rpe: 9 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'incline-row-dumbbell',
-				sets: [
-					{ reps: 12, weight: 16, rpe: 7 },
-					{ reps: 12, weight: 16, rpe: 8 }
-				],
-				restTime: 90
-			},
-			{
-				exerciseId: 'upright-row-barbell',
-				sets: [
-					{ reps: 12, weight: 30, rpe: 7 },
-					{ reps: 12, weight: 30, rpe: 8 }
-				],
-				restTime: 90
-			},
-			{
-				exerciseId: 'decline-crunch',
-				sets: [
-					{ reps: 15, rpe: 7 },
-					{ reps: 15, rpe: 8 }
-				],
-				restTime: 60
-			},
-			{
-				exerciseId: 'lateral-raise-dumbbell',
-				sets: [
-					{ reps: 15, weight: 10, rpe: 7 },
-					{ reps: 15, weight: 10, rpe: 8 }
-				],
-				restTime: 90
-			},
-			{
-				exerciseId: 'front-raise-dumbbell',
-				sets: [
-					{ reps: 10, weight: 10, rpe: 7 },
-					{ reps: 10, weight: 10, rpe: 8 }
-				],
-				restTime: 90
-			}
-		]
-	},
-	{
-		name: 'Day 2 - Push',
-		description: 'Chest, triceps, and biceps push day',
-		exercises: [
-			{
-				exerciseId: 'bench-press-barbell',
-				sets: [
-					{ reps: 8, weight: 80, rpe: 7 },
-					{ reps: 8, weight: 80, rpe: 8 },
-					{ reps: 8, weight: 80, rpe: 9 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'incline-bench-press-barbell',
-				sets: [
-					{ reps: 10, weight: 60, rpe: 7 },
-					{ reps: 10, weight: 60, rpe: 8 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'skullcrusher-dumbbell',
-				sets: [
-					{ reps: 15, weight: 15, rpe: 7 },
-					{ reps: 15, weight: 15, rpe: 8 }
-				],
-				restTime: 90
-			},
-			{
-				exerciseId: 'bench-press-close-grip-barbell',
-				sets: [
-					{ reps: 10, weight: 60, rpe: 7 },
-					{ reps: 10, weight: 60, rpe: 8 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'hammer-curl-dumbbell',
-				sets: [
-					{ reps: 15, weight: 12, rpe: 7 },
-					{ reps: 15, weight: 12, rpe: 8 }
-				],
-				restTime: 90
-			},
-			{
-				exerciseId: 'bicep-curl-dumbbell',
-				sets: [
-					{ reps: 15, weight: 10, rpe: 7 },
-					{ reps: 15, weight: 10, rpe: 8 }
-				],
-				restTime: 90
-			}
-		]
-	},
-	{
-		name: 'Day 3 - Legs',
-		description: 'Quad, hamstring, and calf focused leg day',
-		exercises: [
-			{
-				exerciseId: 'squat-barbell',
-				sets: [
-					{ reps: 8, weight: 80, rpe: 7 },
-					{ reps: 8, weight: 80, rpe: 8 },
-					{ reps: 8, weight: 80, rpe: 9 }
-				],
-				restTime: 150
-			},
-			{
-				exerciseId: 'romanian-deadlift-barbell',
-				sets: [
-					{ reps: 10, weight: 70, rpe: 7 },
-					{ reps: 10, weight: 70, rpe: 8 },
-					{ reps: 10, weight: 70, rpe: 9 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'bulgarian-split-squat-dumbbell',
-				sets: [
-					{ reps: 10, weight: 16, rpe: 7 },
-					{ reps: 10, weight: 16, rpe: 8 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'calf-raise-standing',
-				sets: [
-					{ reps: 15, rpe: 7 },
-					{ reps: 15, rpe: 8 },
-					{ reps: 15, rpe: 9 }
-				],
-				restTime: 60
-			}
-		]
-	},
-	{
-		name: 'Day 4 - Upper',
-		description: 'Full upper body day — shoulders, chest, back, and core',
-		exercises: [
-			{
-				exerciseId: 'overhead-press-barbell',
-				sets: [
-					{ reps: 8, weight: 40, rpe: 7 },
-					{ reps: 8, weight: 40, rpe: 8 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'bench-press-dumbbell',
-				sets: [
-					{ reps: 10, weight: 28, rpe: 7 },
-					{ reps: 10, weight: 28, rpe: 8 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'chin-up',
-				sets: [
-					{ reps: 6, rpe: 8 },
-					{ reps: 6, rpe: 9 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'bench-press-close-grip-barbell',
-				sets: [
-					{ reps: 10, weight: 60, rpe: 7 },
-					{ reps: 10, weight: 60, rpe: 8 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'decline-crunch',
-				sets: [
-					{ reps: 15, rpe: 7 },
-					{ reps: 15, rpe: 8 }
-				],
-				restTime: 60
-			},
-			{
-				exerciseId: 'flat-leg-raise',
-				sets: [
-					{ reps: 15, rpe: 7 },
-					{ reps: 15, rpe: 8 }
-				],
-				restTime: 60
-			}
-		]
-	},
-	{
-		name: 'Day 5 - Lower',
-		description: 'Glute, quad, and hamstring focused lower day',
-		exercises: [
-			{
-				exerciseId: 'front-squat-barbell',
-				sets: [
-					{ reps: 8, weight: 60, rpe: 7 },
-					{ reps: 8, weight: 60, rpe: 8 },
-					{ reps: 8, weight: 60, rpe: 9 }
-				],
-				restTime: 150
-			},
-			{
-				exerciseId: 'romanian-deadlift-dumbbell',
-				sets: [
-					{ reps: 10, weight: 24, rpe: 7 },
-					{ reps: 10, weight: 24, rpe: 8 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'hip-thrust-barbell',
-				sets: [
-					{ reps: 10, weight: 60, rpe: 7 },
-					{ reps: 10, weight: 60, rpe: 8 }
-				],
-				restTime: 120
-			},
-			{
-				exerciseId: 'goblet-squat-dumbbell',
-				sets: [
-					{ reps: 12, weight: 20, rpe: 7 },
-					{ reps: 12, weight: 20, rpe: 8 }
-				],
-				restTime: 90
-			},
-			{
-				exerciseId: 'calf-raise-standing',
-				sets: [
-					{ reps: 15, rpe: 7 },
-					{ reps: 15, rpe: 8 }
-				],
-				restTime: 60
-			}
-		]
-	},
-	{
-		name: 'Day 6 - Stretching',
-		description: 'Full-body stretching — all muscle groups, no equipment (~30 min)',
-		exercises: [
-			{
-				// Neck: sternocleidomastoid, levator scapulae, trapezius
-				exerciseId: 'neck-circle-stretch',
-				sets: [
-					{ duration: 1.5 },
-					{ duration: 1.5 }
-				],
-				restTime: 15
-			},
-			{
-				// Neck/traps: lateral neck flexion
-				exerciseId: 'side-push-neck-stretch',
-				sets: [
-					{ duration: 1 },
-					{ duration: 1 }
-				],
-				restTime: 15
-			},
-			{
-				// Chest & front delts
-				exerciseId: 'seated-shoulder-flexor-stretch-bent-knee',
-				sets: [
-					{ duration: 1 },
-					{ duration: 1 }
-				],
-				restTime: 15
-			},
-			{
-				// Rear delts, triceps, traps
-				exerciseId: 'shoulder-stretch-behind-back',
-				sets: [
-					{ duration: 1 },
-					{ duration: 1 }
-				],
-				restTime: 15
-			},
-			{
-				// Triceps
-				exerciseId: 'elbows-back-stretch',
-				sets: [
-					{ duration: 1 },
-					{ duration: 1 }
-				],
-				restTime: 15
-			},
-			{
-				// Lats & back
-				exerciseId: 'back-pec-stretch',
-				sets: [
-					{ duration: 1 },
-					{ duration: 1 }
-				],
-				restTime: 15
-			},
-			{
-				// Spine, erector spinae, levator scapulae
-				exerciseId: 'cow-stretch',
-				sets: [
-					{ duration: 1.5 },
-					{ duration: 1.5 }
-				],
-				restTime: 15
-			},
-			{
-				// Thoracic spine, shoulders, glutes, calves (multi-target bridge)
-				exerciseId: 'thoracic-bridge',
-				sets: [
-					{ duration: 1 },
-					{ duration: 1 }
-				],
-				restTime: 15
-			},
-			{
-				// Hip adductors & hip flexors
-				exerciseId: 'butterfly-yoga-pose',
-				sets: [
-					{ duration: 1.5 },
-					{ duration: 1.5 }
-				],
-				restTime: 15
-			},
-			{
-				// Hamstrings
-				exerciseId: 'seated-single-leg-hamstring-stretch',
-				sets: [
-					{ duration: 1 },
-					{ duration: 1 }
-				],
-				restTime: 15
-			},
-			{
-				// Hamstrings (toe-up variation)
-				exerciseId: 'kneeling-toe-up-hamstring-stretch',
-				sets: [
-					{ duration: 1 },
-					{ duration: 1 }
-				],
-				restTime: 15
-			},
-			{
-				// Quads, glutes, hip flexors, calves
-				exerciseId: 'side-lunge-stretch',
-				sets: [
-					{ duration: 1 },
-					{ duration: 1 }
-				],
-				restTime: 15
-			},
-			{
-				// Lower back & glutes
-				exerciseId: 'lying-lower-back-stretch',
-				sets: [
-					{ duration: 1.5 },
-					{ duration: 1.5 }
-				],
-				restTime: 15
-			},
-			{
-				// Calves (soleus & gastrocnemius)
-				exerciseId: 'calf-stretch-wall',
-				sets: [
-					{ duration: 1 },
-					{ duration: 1 }
-				],
-				restTime: 15
-			},
-			{
-				// Biceps & forearm flexors
-				exerciseId: 'elbow-flexor-stretch',
-				sets: [
-					{ duration: 1 },
-					{ duration: 1 }
-				],
-				restTime: 15
-			}
-		]
-	}
-];
 
 export const POST: RequestHandler = async ({ locals }) => {
 	const user = await requireAuth(locals);

src/routes/fitness/[workout=fitnessWorkout]/+page.svelte

@@ -2,7 +2,7 @@
 	import { goto } from '$app/navigation';
 	import { page } from '$app/stores';
 	import { onMount } from 'svelte';
-	import { Plus, Trash2, Play, Pencil, X, Save, CalendarClock, ChevronUp, ChevronDown, ArrowRight, MapPin, Dumbbell, Timer } from '@lucide/svelte';
+	import { Plus, Trash2, Play, Pencil, X, Save, CalendarClock, ChevronUp, ChevronDown, ArrowRight, MapPin, Dumbbell, Timer, BookOpen, Check } from '@lucide/svelte';
 	import { getWorkout } from '$lib/js/workout.svelte';
 	import { getWorkoutSync } from '$lib/js/workoutSync.svelte';
 	import { detectFitnessLang, fitnessSlugs, t } from '$lib/js/fitnessI18n';
@@ -20,7 +20,11 @@
 	const sync = getWorkoutSync();
 	// svelte-ignore state_referenced_locally
 	let templates = $state(data.templates?.templates ? [...data.templates.templates] : []);
-	let seeded = $state(false);
+	// Library browser
+	let showLibrary = $state(false);
+	/** @type {any[]} */
+	let libraryTemplates = $state([]);
+	let libraryLoading = $state(false);
 
 	// Schedule state
 	/** @type {string[]} */
@@ -84,15 +88,8 @@
 			return;
 		}
 
-		if (templates.length === 0 && !seeded) {
+		if (templates.length === 0 && !showLibrary) {
-			seeded = true;
+			openLibrary();
-			fetch('/api/fitness/templates/seed', { method: 'POST' }).then(async (res) => {
-				if (res.ok) {
-					const refreshRes = await fetch('/api/fitness/templates');
-					const refreshData = await refreshRes.json();
-					templates = refreshData.templates ?? [];
-				}
-			});
 		}
 	});
 
@@ -135,6 +132,41 @@
 		await startFromTemplate(nextTemplate);
 	}
 
+	async function openLibrary() {
+		showLibrary = true;
+		if (libraryTemplates.length > 0) return;
+		libraryLoading = true;
+		try {
+			const res = await fetch('/api/fitness/templates/library');
+			if (res.ok) {
+				const data = await res.json();
+				libraryTemplates = data.templates ?? [];
+			}
+		} catch {}
+		libraryLoading = false;
+	}
+
+	/** @param {any} libTemplate */
+	async function addFromLibrary(libTemplate) {
+		try {
+			const res = await fetch('/api/fitness/templates/library', {
+				method: 'POST',
+				headers: { 'Content-Type': 'application/json' },
+				body: JSON.stringify({ id: libTemplate.id })
+			});
+			if (res.ok) {
+				const { template } = await res.json();
+				templates = [...templates, template];
+				libTemplate.added = true;
+				libraryTemplates = [...libraryTemplates];
+				toast.success(t('template_added', lang));
+			} else if (res.status === 409) {
+				libTemplate.added = true;
+				libraryTemplates = [...libraryTemplates];
+			}
+		} catch {}
+	}
+
 	function openCreateTemplate() {
 		editingTemplate = null;
 		editorName = '';
@@ -425,6 +457,9 @@
 				<button class="header-icon-btn" onclick={openCreateTemplate} aria-label="Create template">
 					<Plus size={18} />
 				</button>
+				<button class="header-icon-btn" onclick={openLibrary} aria-label="Browse template library">
+					<BookOpen size={18} />
+				</button>
 				<button class="schedule-btn" onclick={openScheduleEditor} aria-label="Edit workout schedule">
 					<CalendarClock size={16} />
 					{t('schedule', lang)}
@@ -444,6 +479,10 @@
 			</div>
 		{:else}
 			<p class="no-templates">{t('no_templates_yet', lang)}</p>
+				<button class="browse-library-btn" onclick={openLibrary}>
+					<BookOpen size={16} />
+					{t('browse_library', lang)}
+				</button>
 		{/if}
 	</section>
 </div>
@@ -702,6 +741,49 @@
 	</div>
 {/if}
 
+<!-- Library Modal -->
+{#if showLibrary}
+	<!-- svelte-ignore a11y_no_static_element_interactions -->
+	<div class="modal-overlay" onkeydown={(e) => e.key === 'Escape' && (showLibrary = false)}>
+		<!-- svelte-ignore a11y_click_events_have_key_events -->
+		<div class="modal-backdrop" onclick={() => showLibrary = false}></div>
+		<div class="modal-panel library-panel">
+			<div class="modal-header">
+				<h2>{t('template_library', lang)}</h2>
+				<button class="close-btn" onclick={() => showLibrary = false} aria-label="Close"><X size={20} /></button>
+			</div>
+			<div class="modal-body">
+				{#if libraryLoading}
+					<p class="library-loading">{t('loading', lang)}...</p>
+				{:else}
+					<div class="library-grid">
+						{#each libraryTemplates as libTmpl (libTmpl.id)}
+							<div class="library-card" class:added={libTmpl.added}>
+								<div class="library-card-info">
+									<h3>{libTmpl.name}</h3>
+									<p>{libTmpl.description}</p>
+									<span class="library-card-meta">{libTmpl.exercises.length} {t('exercises_heading', lang)}</span>
+								</div>
+								<button
+									class="library-add-btn"
+									disabled={libTmpl.added}
+									onclick={() => addFromLibrary(libTmpl)}
+								>
+									{#if libTmpl.added}
+										<Check size={16} />
+									{:else}
+										<Plus size={16} />
+									{/if}
+								</button>
+							</div>
+						{/each}
+					</div>
+				{/if}
+			</div>
+		</div>
+	</div>
+{/if}
+
 <style>
 	/* Primary contrast: white in light mode, nord0 in dark mode */
 	:global(:root) { --primary-contrast: white; }
@@ -1376,4 +1458,83 @@
 		padding: 0.5rem 0;
 		margin: 0;
 	}
+
+	/* Browse library button (empty state) */
+	.browse-library-btn {
+		display: flex;
+		align-items: center;
+		gap: 0.5rem;
+		margin: 0.5rem auto 0;
+		padding: 0.6rem 1.2rem;
+		background: var(--color-primary);
+		color: var(--color-text-on-primary);
+		border: none;
+		border-radius: var(--radius-md);
+		font-size: 0.85rem;
+		font-weight: 600;
+		cursor: pointer;
+	}
+
+	/* Library modal */
+	.library-panel {
+		max-width: 500px;
+	}
+	.library-loading {
+		text-align: center;
+		color: var(--color-text-secondary);
+		padding: 2rem 0;
+	}
+	.library-grid {
+		display: flex;
+		flex-direction: column;
+		gap: 0.5rem;
+	}
+	.library-card {
+		display: flex;
+		align-items: center;
+		gap: 0.75rem;
+		padding: 0.75rem;
+		background: var(--color-bg-tertiary);
+		border-radius: var(--radius-md);
+	}
+	.library-card.added {
+		opacity: 0.55;
+	}
+	.library-card-info {
+		flex: 1;
+		min-width: 0;
+	}
+	.library-card-info h3 {
+		margin: 0;
+		font-size: 0.9rem;
+		font-weight: 600;
+		color: var(--color-text-primary);
+	}
+	.library-card-info p {
+		margin: 0.15rem 0 0;
+		font-size: 0.75rem;
+		color: var(--color-text-secondary);
+	}
+	.library-card-meta {
+		font-size: 0.7rem;
+		color: var(--color-text-tertiary);
+	}
+	.library-add-btn {
+		flex-shrink: 0;
+		width: 36px;
+		height: 36px;
+		border-radius: 50%;
+		border: none;
+		background: var(--color-primary);
+		color: var(--color-text-on-primary);
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		cursor: pointer;
+	}
+	.library-add-btn:disabled {
+		background: var(--color-bg-elevated);
+		color: var(--nord14);
+		cursor: default;
+	}
 </style>