Limits are now account-tied rather than task-tied

README.md

@@ -21,9 +21,9 @@ installed; otherwise CMake downloads the amalgamation (needs network once).
     acc add <name>              tsk add <name> [acc] [status]
     acc del <name>              tsk del <name>
     acc rename <name> <new>     tsk rename <name> <new>
-    acc ls                      tsk reacc <name> <new|->
-                                tsk restat <name> <new>
-                                tsk notes <name>      (opens your editor)
+    acc wait <name> <time>      tsk reacc <name> <new|->
+    acc unwait <name>           tsk restat <name> <new>
+    acc ls                      tsk notes <name>      (opens your editor)
                                 tsk ls
 
     disp tsk (hide|show)
@@ -82,6 +82,15 @@ goes back to `$VISUAL` / `$EDITOR` / nano / vim / vi. The choice is stored in
   Done tasks (`-` if it has none). Rows are sorted most free first: Free, Taken, Busy;
   within Taken and Busy fewer tasks first, ties by name (see `levelOf` in `Display.cpp` and
   `StatusUtil::isBusy` / `isTaken` to change the rules).
+* Waits belong to the account: `acc wait <name> <time>` (or `tsk restat <task> wait
+  <time>`, which sets its account's wait). Until the time the account's Prompt
+  and Testing tasks show `Wait HH:MM`; after it they show `Limit reset`, until
+  you run `acc unwait <name>`, which also clears a stale one. Uploading, Frozen
+  and Done tasks are not affected, and the tasks keep their own stored status
+  underneath. A wait that no task shows (no tasks, or only Done / Frozen /
+  Uploading ones) is listed in the account row as `(wait HH:MM)` or
+  `(limit reset)` and keeps the account Busy. Tasks without an account keep
+  their own wait. Old databases with per-task waits are converted on load.
 * Deleting an account leaves its tasks unassigned (`-`).
 * Names are case-insensitive; the original spelling is kept.
 * Notes live in the database (SQLite TEXT, binary-safe, SQLite's default limit is ~1 GB). The task table shows `-` when a task has no notes, otherwise the number of lines (e.g. `3 lines`); open them with `tsk notes <name>`.