Material menu for walls and molds, opened with F (t5)

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

docs/DESIGN.md

@@ -205,6 +205,12 @@ above, including:
 - **The to-do list is a kandown board.** `NOTES.md` became one task file per note in
   `tasks/` (Todo for tasks, Backlog for discussions and ideas, Review for "done, please check").
   The owner wanted a task tool built for AI agents.
+- **Wall and mold materials have a menu (F).** It lists every wall material with what you have,
+  the cost and the heat it stands; R still cycles. The owner chose F to match the filter menu.
+- **The camera's drift toward the pointer is a setting** ("Camera looks toward the pointer", on
+  by default). The owner doesn't like it.
+- **Fog of war reveals by line of sight.** Unexplored ground is black with a soft edge; the sky
+  and the surface start seen. The owner chose line of sight over a plain circle around the bot.
 
 ## Ideas not built yet
 

docs/PROJECT_MAP.md

@@ -393,14 +393,14 @@ The notebook (N): milestones, market, wallet, blueprints, controls.
 The tool hotbar and what is selected.
 - functions: renderHotbar, toolId, steering, modShift, grainAt, selectTool, bagMaterials, mixList, ensureDropMat, piece
 
-### src/ui/build-menu.js (101 lines)
+### src/ui/build-menu.js (102 lines)
 The build menu along the bottom: categories, piece tiles and their icons.
 - functions: pieceIcon, catOf, selectBuildCat, cycleBuildCat, buildVariantChips, renderBuildBar, setupBuildBar
 - variables: BUILD_CATS, BUILD_ORDER, PIECE_ICONS, lastBuildKey, lastBuildMenu
 
-### src/ui/selection.js (236 lines)
+### src/ui/selection.js (252 lines)
 The selected tool and piece: R / Q / E, drill width, filter picker, the selection card, the bag panel.
-- functions: pieceUsesWall, setDrillWidth, tuneUnderCursor, cycleItem, cycleWall, rotate, toggleCollect, pickFilterUnderCursor, toggleFilterMat, toggleCollectUnderCursor, setBrush, pieceV, pieceExtra, filterChoices, matList, filterParts, filterSentence, applyFilterRun, openFilterPicker, filterBlockAt, chipCost, pieceCostNow, renderSelCard, renderBag
+- functions: pieceUsesWall, setDrillWidth, tuneUnderCursor, cycleItem, cycleWall, rotate, toggleCollect, pickFilterUnderCursor, toggleFilterMat, toggleCollectUnderCursor, setBrush, pieceV, pieceExtra, filterChoices, matList, filterParts, filterSentence, applyFilterRun, openFilterPicker, openWallPicker, filterBlockAt, chipCost, pieceCostNow, renderSelCard, renderBag
 - variables: lastBagKey
 
 ### src/ui/info.js (170 lines)
@@ -412,7 +412,7 @@ Keyboard and mouse listeners.
 - functions: isTyping
 - variables: canvas
 
-### src/ui/actions.js (242 lines)
+### src/ui/actions.js (243 lines)
 What input does: overlays, F, pick, copy / cut / paste, undo, building and tool use each frame. Which overlays are on, shown as a coloured frame round the screen and a named badge
 - functions: updateOverlayUI, toggleLens, doInteract, pickUnderCursor, aimBlock, stampOrigin, selModeHeld, startPaste, stopSelectAndPaste, plural, piecesIn, doUndo, endRmbRecord, dragDirFor, blockLabel, primaryPress, primaryRelease, secondaryPress, toolTick
 - variables: ovShown

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: t5 Material selection menu (Claude Code, Codex)
+
+- Decided with the owner: F opens it for walls and molds, R keeps cycling.
+- `src/ui/selection.js`: `openWallPicker` (a dialog of every wall material: what you have, the
+  cost for this piece, the heat it stands; owned first, unaffordable dimmed; glass says whether
+  it is from shards or bars); `pieceCostNow(P, m)` takes a material.
+- `src/ui/actions.js`: F with a wall or mold piece opens it. `src/ui/build-menu.js`: the material
+  chip reads "· R · F" and opens it on click; placement help mentions F. `src/ui/notebook.js`:
+  Controls and Blueprints text. `src/styles/style.css`: `.wpick`.
+- `test/play.py`: F and the chip open it, Brick picks RBRICK, R still cycles, molds have their own
+  menu and cost, it fits at 1280×800 and 900×700 (screenshots checked).
+- Tests: `run_all.py --browser` pass, apart from the `t_smooth` half-resolution flake.
+
 ## 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.