Name box in the New world panel (t10)

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

docs/PROJECT_MAP.md

@@ -370,9 +370,9 @@ The title screen art.
 - functions: buildTitleCells, drawTitle
 - variables: FONT5, TITLE
 
-### src/ui/saves.js (177 lines)
+### src/ui/saves.js (178 lines)
 Saves in IndexedDB, world files (export / import) and the blueprint library.
-- functions: newWorldId, worldWrite, listWorlds, putWorldEntry, worldNewest, deleteWorld, renameWorld, migrateWorlds, saveWorld, newestSave, b64FromBytes, bytesFromB64, gz, exportWorld, importWorldFile, libLoad, libSave, bpEncode, bpValid, bpDecode
+- functions: newWorldId, worldWrite, listWorlds, putWorldEntry, worldNewest, deleteWorld, cleanWorldName, renameWorld, migrateWorlds, saveWorld, newestSave, b64FromBytes, bytesFromB64, gz, exportWorld, importWorldFile, libLoad, libSave, bpEncode, bpValid, bpDecode
 - variables: DB, worldIdTime, worldIdCounter, worldWrites
 
 ### src/ui/session.js (125 lines)
@@ -431,7 +431,7 @@ Previews drawn under the cursor: build ghosts, drill aim and pulses, selections,
 Events from the simulation (emit) turned into sounds, toasts and cards.
 - functions: drainEvents
 
-### src/ui/loop.js (119 lines)
+### src/ui/loop.js (126 lines)
 The frame loop and boot.
 - functions: scanVisible, frame, boot
 - variables: lastT, acc, lastRender, frameMs, simMs, fpsSm, ambientT

docs/agent-log.md

@@ -4,6 +4,17 @@ 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: t10 World name box for a new world (Claude Code, Codex)
+
+- `src/shell.html`, `src/styles/style.css`: a Name box across the top of the New world panel.
+- `src/ui/loop.js`: opening the panel fills it with the next `World N` and selects it; Enter in
+  Name or Seed generates. `src/ui/session.js`: `startNewWorld(seed, w, h, name)`.
+- `src/ui/saves.js`: `cleanWorldName` (trim, 40 characters, else a fallback), shared with
+  `renameWorld`.
+- `test/play.py`: a typed name reaches the Worlds list and the pause menu; the default and an
+  all-spaces name both give `World N`. Screenshot `shots/play/new-world.png` checked.
+- Tests: `run_all.py --browser` all pass.
+
 ## 2026-10-24: t7 Option to turn off smooth pan following the mouse (Claude Code, Codex)
 
 - New setting `cameraLead` (Display: "Camera looks toward the pointer", on by default):