Make routines act on their own and check every bot action

Scheduled runs are pre-approved: they carry out their brief instead of
drafting for confirmation. A run that can't do its brief calls
report_run_failed and is retried 5 and 10 minutes later; only then does
the user get one "failed after N tries" message, and the routine keeps
why in last_error.

Every reply and task now gets ActionCheckNote: look for an existing
record before creating one, and verify an action took effect before
saying it's done. Memory and instructions saves are read back, and
create_bot, create_schedule, start_task and delegate_task refuse
duplicates.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/bots-queue/scheduled-run-failed-error.ts

@@ -0,0 +1,10 @@
+/**
+ * Thrown by a task runner when a scheduled run reported that it failed
+ * (`report_run_failed`). Unlike `BotJobFatalError`, the queue retries it.
+ */
+export default class ScheduledRunFailedError extends Error {
+    constructor(message: string) {
+        super(message);
+        this.name = "ScheduledRunFailedError";
+    }
+}