Add routine archives: archive date, searchable archived list, frozen page

- Stamp archived_at on the archived snapshot; copy it on edit
- loadArchived(projectId) + collapsible fuzzy-searched "Archivées" section on the project page
- Archived routine pages open read-only with the health chart ending at the archive date; edit/complete actions reject archived routines

1 files changed, 19 insertions, 2 deletions

diff --git a/src/routes/projects/[projectId]/routine/[routineId]/+page.server.ts b/src/routes/projects/[projectId]/routine/[routineId]/+page.server.ts
index 83bac3c..f2b6551 100644
--- a/src/routes/projects/[projectId]/routine/[routineId]/+page.server.ts
+++ b/src/routes/projects/[projectId]/routine/[routineId]/+page.server.ts
@@ -31,21 +31,31 @@ export const load: PageServerLoad = async ({ params }) => {
 	}
 
 	const routine = await loadCurrent(routineId);
-	if (!routine || routine.archived || routine.projectId !== projectId) {
+	if (!routine || routine.projectId !== projectId) {
 		throw error(404, 'Routine introuvable');
 	}
 
 	const completions = await loadCompletions(routineId);
+	// An archived routine is frozen at its archive instant: state and chart
+	// stop there instead of now.
+	const at = routine.archivedAt ? Date.parse(routine.archivedAt) : Date.now();
 	return {
 		project: { id: project.id, name: project.name },
 		routine,
 		completions,
-		state: computeRoutineState(routine, completions, Date.now()),
+		state: computeRoutineState(routine, completions, at),
 	};
 };
 
 export const actions: Actions = {
 	edit: async ({ request, params }) => {
+		const current = await loadCurrent(numericId(params.routineId));
+		if (!current) {
+			return fail(400, { error: 'Routine introuvable' });
+		}
+		if (current.archived) {
+			return fail(400, { error: 'Routine archivée' });
+		}
 		const data = await request.formData();
 		const name = parseFormString(data.get('name'));
 		if (!name) {
@@ -65,6 +75,13 @@ export const actions: Actions = {
 	},
 
 	complete: async ({ request, params }) => {
+		const current = await loadCurrent(numericId(params.routineId));
+		if (!current) {
+			return fail(400, { error: 'Routine introuvable' });
+		}
+		if (current.archived) {
+			return fail(400, { error: 'Routine archivée' });
+		}
 		const data = await request.formData();
 		try {
 			await complete(