Drop the work log from TODO.md; keep only open work (closes #255)

TODO.md held a dated log of finished steps, merge history and accounts
of earlier live-feed runs. It now holds the Status line, the open Next
Step and an empty Future Steps. The Workflow section deletes the
finished Next Step instead of moving it to Completed Steps. README
"TODO" no longer says the file lists the steps done.

Model: opus-5-5

TODO.md

@@ -17,7 +17,13 @@ https://git.eeqj.de/sneak/routewatch/issues/86.
 
 Post the outcome of the run of `e58c663` on the live feed on
 https://git.eeqj.de/sneak/routewatch/issues/232. Work it out from the run's
-data, kept in the Docker volume `routewatch-run-e58c663`. The outcome says:
+data:
+
+- the log of the stopped container `routewatch-run-e58c663`, read with
+  `docker logs`
+- the database in the Docker volume `routewatch-run-e58c663`
+
+Keep the container until the outcome is posted. The outcome says:
 
 - whether the feed stalled or reconnected
 - whether any handler dropped an update, and the most messages the prefix
@@ -26,6 +32,9 @@ data, kept in the Docker volume `routewatch-run-e58c663`. The outcome says:
 - the size of the `origin_changes` table on disk
 - the process's peak memory against 5 GiB
 
+The run's data does not show the most messages the prefix handler held back at
+once, or the process's peak memory.
+
 File an issue for each problem the run found.
 
 # Future Steps