Better account-based wait status

include/lls_api.h

@@ -16,7 +16,11 @@
  *     or just "wait" (only while the task's account is already waiting).
  *   - A wait belongs to the account: setting a task to "wait <time>" sets its
  *     account's wait, and the account's Prompt / Testing tasks then show Wait
- *     until that time and Limit reset after it (see the README).
+ *     until that time and Limit reset after it. A task you explicitly set to
+ *     "testing" or "prompt" while the wait is running shows that status instead
+ *     (overrides_wait = 1) and the other tasks keep waiting; "wait" makes it follow
+ *     the account again. If the wait is already over (Limit reset), setting a task
+ *     to testing / prompt clears it: the account is in use again (see the README).
  *   - Times are Unix seconds (UTC); clock-time text like "4:30pm" is read in the
  *     local time zone, and a time that has passed today means tomorrow.
  *
@@ -88,6 +92,7 @@ typedef struct lls_task_info {
     int64_t until;             /* for Wait / Limit reset: when the wait ends (ended); else 0 */
     const char* notes;         /* the full text, "" if none (any length) */
     int notes_lines;           /* number of lines in the notes */
+    int overrides_wait;        /* 1 if its account waits but this task ignores it (set to Testing / Prompt) */
 } lls_task_info;
 
 /* An account with its computed state. */