Two gaps found on the way are on record: the half-write abort flake and the one-shot commands' empty work directory

TODO.org

@@ -1471,8 +1471,7 @@ A session that ends cleanly — =close=, or the editor gone past the grace —
 removes =flan-dev-<pid>= (program, modules, agent socket) and its own
 =Build.workdir=. Kept on a crash: the accept loop raising, or a two-process
 child killed by a signal. Only the two paths named for this pid are touched;
-nothing sweeps other sessions' directories. =flan build= and =flan run= still
-leave an empty =flan-<pid>= each; that is not this entry.
+nothing sweeps other sessions' directories.
 
 ** DONE (agent/start) takes no argument, and binds before main
 CLOSED: [2026-09-20]
@@ -1655,6 +1654,17 @@ flake and a flake is how a watchdog gets deleted.
 The fork pool is drained before anything reads the failure count, and a nonzero
 count is an exit status. A red row used to be able to print and pass.
 
+** TODO test_dev dies on Wire.Closed after the half-write abort
+Intermittent, on an unmodified tree too: the =--llvm= half-write daemon in
+=test_dev.ml='s =half_written= sometimes exits before it replies to =abort=, and
+=request= raises =Wire.Closed= uncaught, so test_dev ends with a fatal, no =FAIL=
+line and every later row unrun.
+
+** TODO flan build and flan run leave an empty flan-<pid> directory
+=Build.workdir= is created per process and nothing removes it once the IR is
+gone. The dev daemon now removes its own on a clean end; the one-shot commands do
+not.
+
 * Editor
 
 ** DONE The syntax table and the font-lock lists are read off the parser