Clear finished jobs' steps a minute after they end

Job steps (bots_queue_updates) only feed the live working row, so the
new clear-job-steps cron deletes them shortly after a job ends, however
it ended, keeping their count on bots_queue.steps for the message
details. Not done the moment a job ends: the live relay would miss the
last ones.

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

db/types/db.ts

@@ -505,11 +505,11 @@ export type BUN_SQLITE_COBBLE_TASKS = {
      */
     updated_at?: number | "";
     /** 
-     * The bot the task belongs to; null for a workspace's task
+     * The bot that has the task: its own list's, or with `workspace_id` its task in that workspace; null for a workspace's shared task nobody has yet
      */
     bot_id?: number | "";
     /** 
-     * The workspace the task belongs to (its bots all see it); null for a bot's own
+     * The workspace the task is in; null for a bot's own list
      */
     workspace_id?: number | "";
     title?: string;
@@ -679,6 +679,10 @@ export type BUN_SQLITE_COBBLE_BOTS_QUEUE = {
      * Unix timestamp of completion or final failure
      */
     finished_at?: number | "";
+    /** 
+     * How many steps it recorded, written when its `bots_queue_updates` are cleared after it ends (null while they're still there)
+     */
+    steps?: number | "";
     /** 
      * The state of the job. (pending | processing | completed | failed)
      */