Progress bar and steps while generating, loading, opening claims and travelling; saving chip (t30)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/agent-log.md

@@ -4,6 +4,19 @@ What agents have done, newest first. Add an entry for every piece of work: the d
 note or request it was for, what changed, the files touched, the tests run, and anything left
 open or not verified. Keep each entry short; the git history has the details.
 
+## 2026-10-24: t30: progress while generating, loading and saving (Claude Code, Codex)
+
+- `worldgen.js`: `worldSteps` generator yields `[fraction, label]`; `generateWorld` (sync, tests)
+  and `generateWorldAsync` (yields every 30 ms) run it. Small and Medium mat/temp/flags hashes
+  match the old generator exactly.
+- `session.js` `showLoading(on, p, label, title)` with `#loadstep`; `GAME.loading` stops the
+  frame loop's sim and drawing while worlds swap. `loadSavedWorld` for Continue and the world
+  list; `worldNewest`/`unpackBuffers`/`startFromSave` report progress; travel and new claims too.
+  `#saving` chip after 150 ms of saving.
+- Tests: t_world progress labels and identical worlds; play.py overlay, responsiveness during
+  async generation, Continue labels, saving chip. All pass except t_smooth half-resolution
+  (fails under load, as before). Screenshots `shots/t30-loading.png`, `shots/t30-saving.png`.
+
 ## 2026-10-24: t3 follow-up: claim names; t30 added (Claude Code, Codex)
 
 - New claims get a camp name from their seed ("Cinder Gulch"; `claimName` in `src/ui/claims.js`,