feat: garden care reminder bodies, task sync, upload cleanup

- care reminders now fire with plant-specific body ("Time to water Pothos")
  via title/body columns on the reminders table (migration 0016)
- bi-directional task sync: checking off a garden-linked task list item
  creates a care log; logging care from garden marks the linked task done
  (list_items.metadata stores gardenPlantId + gardenCareType linkage)
- upload error response no longer leaks debug detail; error message
  corrected from "5 MB" to "100 MB"

src/modules/_core/reminders.ts

@@ -13,6 +13,8 @@ export async function scheduleReminder(input: {
   fireAt: Date;
   createdBy: string;
   channel?: string;
+  title?: string;
+  body?: string;
 }) {
   await db
     .insert(reminders)
@@ -22,12 +24,20 @@ export async function scheduleReminder(input: {
       entityId: input.entityId,
       fireAt: input.fireAt,
       channel: input.channel ?? "auto",
+      title: input.title ?? null,
+      body: input.body ?? null,
       createdBy: input.createdBy,
       firedAt: null,
     })
     .onConflictDoUpdate({
       target: [reminders.entityType, reminders.entityId],
-      set: { fireAt: input.fireAt, firedAt: null, createdBy: input.createdBy },
+      set: {
+        fireAt: input.fireAt,
+        title: input.title ?? null,
+        body: input.body ?? null,
+        firedAt: null,
+        createdBy: input.createdBy,
+      },
     });
 }
 
@@ -82,8 +92,8 @@ export async function tickReminders() {
       if (!reminder.createdBy) return;
       try {
         await notify(reminder.createdBy, {
-          title: "Reminder",
-          body: `You have a reminder`,
+          title: reminder.title ?? "Reminder",
+          body: reminder.body ?? "You have a reminder",
           url: reminder.entityType === "notes.note" ? `/notes/${reminder.entityId}` : "/",
           channels: ["push", "inapp"],
         });