New claims: open another claim once one is paid off, travel between them (t3)

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

docs/agent-log.md

@@ -4,6 +4,24 @@ 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: t3: a world that lasts (Claude Code, Codex)
+
+- `26d17c2` deeper is richer (`worldgen.js` ore thresholds drop with depth below fy 0.25).
+  Medium seed 424242 ore grains before -> after: coal 33,493 -> 170,437; copper 26,508 ->
+  127,298; iron 77,679 -> 361,683; zinc 11,797 -> 53,527; tin 7,723 -> 38,551; silver 3,638 ->
+  12,166; gold 1,681 -> 5,858; total 162,519 -> 769,520 (4.73x). Shallow ore unchanged. Codex's
+  first try stretched noise by depth (streaks) and gave gold 26x; redone.
+- `4a88254` waste rock: `REFINE` granite/basalt about 2x; granite and basalt bulk orders; prices.
+- `56c93ae` Huge 6144x2048 and gzip-packed save buffers (`packBuffers`/`unpackBuffers`, old raw
+  saves still load). Medium 29.0 MB -> 0.44 MB, Huge 92.8 MB -> 1.36 MB; Huge generation 5.9 s,
+  save 0.5 s, 0.39 ms per idle tick.
+- New claims: `src/ui/claims.js` (career record `career:<id>` in IndexedDB, applied over each
+  loaded claim; `openNewClaim`, `travel`, Claims tab), `session.js` `setupNewWorld`, `saves.js`.
+  I switched claims.js to the repo's single quotes. Screenshot `shots/t3-claims.png`.
+- Tests: play.py 268 checks and all headless suites pass. t_smooth's half-resolution check
+  fails under load on this machine; the build before t3 failed it 3 of 3 times under the same
+  load, so it isn't caused by this work.
+
 ## 2026-10-24: t4 follow-ups and t28 Brick press (Claude Code, Codex)
 
 - `9739ca0`: Refiner and Stone cutter code removed; `save.js` skips unknown machine types on load