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

@@ -2,7 +2,7 @@
 
 - branch (from `main`)
 - do the work in Next Step
-- move Next Step to the top of Completed Steps
+- delete Next Step from `TODO.md`
 - move the top item of Future Steps into Next Step
 - commit (`TODO.md` changes in the same commit as the work)
 - merge to `main` if the branch is not protected, otherwise open a PR
@@ -16,10 +16,8 @@ https://git.eeqj.de/sneak/routewatch/issues/86.
 # Next Step
 
 Post the outcome of the run of `e58c663` on the live feed on
-https://git.eeqj.de/sneak/routewatch/issues/232. The run began at 09:19 UTC on
-2026-11-10 and lasts at least 24 hours. If the feed has not stalled or
-reconnected by then, the run goes on until it does, up to 72 hours in all. The
-outcome says:
+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:
 
 - whether the feed stalled or reconnected
 - whether any handler dropped an update, and the most messages the prefix
@@ -28,6 +26,6 @@ outcome says:
 - the size of the `origin_changes` table on disk
 - the process's peak memory against 5 GiB
 
-File an issue for each problem the run finds.
+File an issue for each problem the run found.
 
 # Future Steps