fix(prod): dedupe scheduled tasks and reconcile orphan delivery contracts

Prevent duplicate active scheduled tasks, fail static preparing contracts
when HTML is missing, raise MindSpace remote timeout default to 30s, and
add 103 repair scripts for inspection follow-ups.

Co-authored-by: Cursor <cursoragent@cursor.com>

scheduled-task-service.mjs

@@ -137,6 +137,27 @@ export function createScheduledTaskService(pool, { defaultTimezone = DEFAULT_TIM
       timezone: tz,
       now: clock.now(),
     });
+    const normalizedTitle = safeTitle || safeTaskSpec.slice(0, 80);
+    const normalizedHour = hour == null ? null : Number(hour);
+    const normalizedMinute = Number(minute ?? 0);
+    if (safeRecurrence !== 'once') {
+      const [duplicateRows] = await pool.query(
+        `SELECT *
+         FROM h5_scheduled_tasks
+         WHERE user_id = ?
+           AND status = 'active'
+           AND recurrence = ?
+           AND hour <=> ?
+           AND minute = ?
+           AND title = ?
+         ORDER BY created_at ASC
+         LIMIT 1`,
+        [userId, safeRecurrence, normalizedHour, normalizedMinute, normalizedTitle],
+      );
+      if (duplicateRows?.[0]) {
+        return rowToTask(duplicateRows[0]);
+      }
+    }
     const id = crypto.randomUUID();
     const ts = clock.now();
     await pool.query(
@@ -148,11 +169,11 @@ export function createScheduledTaskService(pool, { defaultTimezone = DEFAULT_TIM
       [
         id,
         userId,
-        safeTitle || safeTaskSpec.slice(0, 80),
+        normalizedTitle,
         safeTaskSpec,
         safeRecurrence,
-        hour == null ? null : Number(hour),
-        Number(minute ?? 0),
+        normalizedHour,
+        normalizedMinute,
         weekday == null ? null : Number(weekday),
         tz,
         nextRunAt,