Brick press: clay lumps into green bricks that fire into Bricks (t28)

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

docs/DESIGN.md

@@ -225,6 +225,18 @@ above, including:
   machines (Grinder 0.25 grains/tick, $60; Saw 0.5, $90). In a vertical stack only the top block
   takes input and the result passes down through the rest, so a Saw on a Grinder cuts stone and
   grinds everything else. Partial brick counts are not saved.
+  After the owner played it: the Refiner and Stone cutter code is gone (an old save that still has
+  one loads without it and refunds its price). Grinders draw as a pair of grinding wheels and
+  Saws as a round blade, turning while busy. The Saw also cuts wood chunks into Planks (2 build a
+  wood wall). Its stone output is now called a Stone block, so that only fired clay is a brick.
+  Items piling up under a block stay a thing to build around (a belt or an open drop), and the
+  Saw's text says so.
+
+- **Clay bricks come from a Brick press (t28, 2026-10-24).** A hopper block like the Saw: every
+  8 clay lumps on top become a Green brick below, and a Green brick fires into a Brick above about
+  900°C (any fire). 2 Bricks build a brick wall block; builders order them. The owner found it odd
+  that clay bricks (first planned as a mold) and stone bricks would be made in different ways, and
+  chose a press over a heated kiln block or a mold. Loose clay still fires into brick rubble.
 - **The bag is the vacuum's control panel (t6).** Each bag row has separate pick-up and blow
   marks; a chip on the tool card sets pick-up to everything, only marked, or the same as the
   first click; R over a grain toggles its pick-up mark. The owner found the shared ticks confusing.

docs/PROJECT_MAP.md

@@ -196,15 +196,15 @@ Deepgrain Foundry: simulation core (src/sim/). No DOM anywhere in src/sim/: plai
 - functions: rnd, mulberry32, hash2
 - variables: RS, PH_EMPTY, PH_SOLID, PH_POWDER, PH_LIQUID, PH_GAS, PH_ITEM
 
-### src/sim/materials.js (162 lines)
+### src/sim/materials.js (167 lines)
 Material ids, the material table (def), per-material property arrays, cell flags and part ids, and drill/tank tiers.
 - functions: def, metalFamily
-- variables: EMPTY, GRASS, DIRT, LDIRT, SAND, GRAVEL, CLAY, STONE, GRANITE, BASALT, NMAT, MD, PH, DENS, KC, ICAP, CASTMETAL, METAL_TIER, SOLIDMETAL, F_NAT, F_CAST, F_BURN, P_NONE, P_TU, P_TD, P_TL, P_TR, P_GRATE, P_GOPEN, P_WHEEL, P_INTAKE, P_FILTER, P_PIPE, TDX, TDY, BIT_TIERS, TANK_TIERS, REACH
+- variables: EMPTY, GRASS, DIRT, LDIRT, SAND, GRAVEL, CLAY, STONE, GRANITE, BASALT, NMAT, MD, FIRETO, PH, DENS, KC, ICAP, CASTMETAL, METAL_TIER, SOLIDMETAL, F_NAT, F_CAST, F_BURN, P_NONE, P_TU, P_TD, P_TL, P_TR, P_GRATE, P_GOPEN, P_WHEEL, P_INTAKE, P_FILTER, P_PIPE, TDX, TDY, BIT_TIERS, TANK_TIERS, REACH
 
-### src/sim/pieces.js (139 lines)
+### src/sim/pieces.js (141 lines)
 Everything the player can build (PIECES): blocks, machines and molds, with costs and descriptions; filter settings; wall materials and their cost.
 - functions: isPipeCode, filterable, cleanFilterCfg, filterRec, filterPassAt, filterInfo, sameFilter, wallCost
-- variables: BS, BP_WALL, BP_BELT, BP_TUBE, BP_SHAFT, BP_GRATE, BP_GATE, BP_FILTER, BP_PIPE, BP_PUMP, BP_OUTLET, BP_GRIND, BP_SAW, filterCfg, WALL_OF, WALL_LIST, BAR_OF, GRAINS_PER_BAR, POWER_FREE, CASH, PIECES, PIECE_BY_ID, PIECE_BY_CODE, BELT_POWER, TUBE_POWER, FAN_POWER, WHEEL_K, ENGINE_K, MOLDS
+- variables: BS, BP_WALL, BP_BELT, BP_TUBE, BP_SHAFT, BP_GRATE, BP_GATE, BP_FILTER, BP_PIPE, BP_PUMP, BP_OUTLET, BP_GRIND, BP_SAW, BP_PRESS, filterCfg, WALL_OF, WALL_LIST, BAR_OF, GRAINS_PER_BAR, POWER_FREE, CASH, PIECES, PIECE_BY_ID, PIECE_BY_CODE, BELT_POWER, TUBE_POWER, FAN_POWER, WHEEL_K, ENGINE_K, MOLDS
 
 ### src/sim/economy.js (152 lines)
 Money, prices, market saturation, the trade dock, buyer and builder orders.
@@ -241,7 +241,7 @@ Machines: the power network, footprints, placing and removing machines.
 - functions: markPow, partLost, rebuildPower, netSat, evictCells, cellBuildable, machineFootprint, canPlaceMachine, addMachine, removeMachine
 - variables: nextPowerBuild
 
-### src/sim/processors.js (108 lines)
+### src/sim/processors.js (113 lines)
 Processing: Grinder and Saw blocks, and the Silo.
 - functions: isProcCode, rebuildProcessors, procBottom, procSlot, procFeed, procBlocksTick, siloTick, siloFull
 - variables: REFINE, REFINE_SAND, CUT_PER_BRICK, SAW_CUTS, procState, procBlocks, procDirty, SILO_CAP, SILO_RATE
@@ -269,7 +269,7 @@ Molds: cavities for castings; ingot troughs empty themselves below. Removal retu
 - functions: moldCellsAt, canPlaceMold, newMoldRecord, addMold, castMix, cavityState, troughState, clearCavity, moldPlugCells, rakeAbove, furnaceJunkHint, unplugMold, ejectIngot, checkMolds, moldAt, tally, collectMold, removeMold
 - variables: DROSS, grains, barWord
 
-### src/sim/items.js (200 lines)
+### src/sim/items.js (203 lines)
 Bars and other loose objects (ents), and the bag: adding, taking, costs and refunds.
 - functions: entSolidCell, entFreeAt, entMark, spawnBar, removeEnt, entTubeAt, entTubeFree, entTubeMove, entTubeEnter, entTubeTick, entTick, entsInCircle, bagAdd, bagTake, giveOrDrop, refundAt, canAfford, payCost, fmtMoney, costText, needText
 - variables: BAR_W, BAR_H, entCurM, droppedLast
@@ -348,7 +348,7 @@ Scale colour without changing the smooth-look class.
 - functions: fogColor, drawWorld
 - variables: TUBE_CLASS
 
-### src/render/machines.js (207 lines)
+### src/render/machines.js (212 lines)
 Machine overlays: fans, engines, silo and the rest, drawn on top of the world.
 - functions: cellRect, drawHazardRims, drawMachines, drawProcBlocks, drawSilo, drawSiloPixel
 
@@ -399,7 +399,7 @@ The notebook (N): milestones, market, wallet, blueprints, controls.
 The tool hotbar and what is selected.
 - functions: renderHotbar, toolId, steering, modShift, grainAt, selectTool, bagMaterials, blowList, blowAllList, blowingAll, piece
 
-### src/ui/build-menu.js (102 lines)
+### src/ui/build-menu.js (103 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
@@ -409,7 +409,7 @@ The selected tool and piece: R / Q / E, drill width, filter picker, the selectio
 - functions: pieceUsesWall, setDrillWidth, tuneUnderCursor, cycleItem, cycleWall, rotate, toggleBlow, pickFilterUnderCursor, toggleFilterMat, setBrush, pieceV, pieceExtra, filterChoices, matList, filterParts, filterSentence, applyFilterRun, openFilterPicker, openWallPicker, filterBlockAt, chipCost, pieceCostNow, renderSelCard, renderBag
 - variables: lastBagKey
 
-### src/ui/info.js (173 lines)
+### src/ui/info.js (174 lines)
 Discovery cards, hover info (I) and the cursor label.
 - functions: showCard, howText, discoveryCard, reactionsOf, hoverInfo, renderInfo, drawCursorLabel
 

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: 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
+  and refunds a refiner ($120) or cutter ($90). Their old t_pipes/t_stone checks now use blocks.
+- `f5e5591`: `drawProcBlocks` (`render/machines.js`) draws Grinder wheels and the Saw blade over a
+  plain housing texture; turns while busy, no `rnd()`.
+- `08d2d65`: `PLANK` item; the Saw cuts `LWOOD` too (`SAW_CUTS`, per-material `cut` counts).
+  "Stone brick" is "Stone block" in player text. Saw text explains the pile-up under it.
+- t28: `BP_PRESS`/`PRESSB`, `GREENB` and `BARBR` items, `FIRETO` (items.js fires a hot green
+  brick into a Brick). Machines tab, hover, notebook, milestone hint.
+- Tests: `run_all.py --browser` passed after each commit (t_smooth's flake rerun alone).
+  Screenshots `shots/t4-wheels{,-smooth}.png`, `shots/t28-press.png`.
+
 ## 2026-10-24: t4: Grinder and Saw hopper blocks (Claude Code, Codex)
 
 - New block pieces `grinder`/`saw` (`BP_GRIND`/`BP_SAW`, materials `GRINDER`/`SAWB`, NMAT 97).