Fewer, smaller messages: mold percentages, markers for machine heat, short status lines

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

docs/DESIGN.md

@@ -175,6 +175,8 @@ above, including:
 
 - **Ingot molds need no F.** They push junk and mixed metal out of the bottom as loose grains with the bars, throw slag away and rake the grate. Removing any mold returns its set metal: whole bars as bars, the rest as scrap. The owner asked what F was for once bars dropped on their own, and chose this over keeping F for cleaning.
 
+- **Fewer, smaller messages.** Molds show only a small percentage, red when blocked or spoiled and gold when a casting waits for F; details are in the hover panel. Bars dropping, blocked molds and set castings no longer pop up cards or toasts. Fan heat is a red marker on the fan; melted tubes and machines get a short red label where they were. Status lines are one short sentence. The owner found the messages too large and too many.
+
 ## Ideas not built yet
 
 - **Concrete**, as a stronger wall material from rubble.

docs/PROJECT_MAP.md

@@ -257,9 +257,9 @@ How belts, filters and screw tubes move what is on or in them. What rests on a b
 Building blocks: placing, integrity, removing, lines and rectangles of blocks.
 - functions: blockOf, blockCellList, pieceCost, canPlaceBlock, placeBlock, blockIntegrity, removeBlock, blockLine, blockRect, blockInReach, blockIs, placeBlocks
 
-### src/sim/molds.js (328 lines)
+### src/sim/molds.js (319 lines)
 Molds: cavities for castings; ingot troughs empty themselves below. Removal returns set metal.
-- functions: moldCellsAt, canPlaceMold, newMoldRecord, addMold, castMix, cavityState, troughState, clearCavity, moldPlugCells, rakeAbove, furnaceJunkHint, unplugMold, ejectIngot, checkMolds, moldAt, knockNote, tally, collectMold, removeMold
+- 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 (134 lines)
@@ -341,13 +341,13 @@ drawWorld: the per-grain pixel buffer (pixel look), also the input of the smooth
 - functions: drawWorld
 - variables: TUBE_CLASS
 
-### src/render/machines.js (152 lines)
+### src/render/machines.js (157 lines)
 Machine overlays: fans, engines, refiner, cutter, silo and the rest, drawn on top of the world.
 - functions: cellRect, drawHazardRims, drawMachines, drawSilo
 
-### src/render/overlays.js (230 lines)
+### src/render/overlays.js (228 lines)
 Other overlays: floating text, rain and snow, flow arrows, filter tags, molds, the bot, particles.
-- functions: spawnFloater, drawRain, drawFlowArrows, drawRunOutline, drawFilterTags, drawFloaters, drawMolds, drawBot, spawnDebris, spawnSpark, spawnSuck, drawParticles
+- functions: spawnFloater, drawRain, drawFlowArrows, drawRunOutline, drawFilterTags, drawFloaters, moldLabel, drawMolds, drawBot, spawnDebris, spawnSpark, spawnSuck, drawParticles
 
 ### src/render/smooth.js (430 lines)
 Smooth look: a WebGL2 pass that turns the per-grain buffers drawWorld fills (colour + class, colour behind, trees, occupancy fields, light, glow) into rounded, outlined, softly lit shapes at screen resolution. The 2D canvas then draws this image as its world layer, and every overlay (machines, bot, previews, labels) goes on top as before.
@@ -402,7 +402,7 @@ The selected tool and piece: R / Q / E, drill width, filter picker, the selectio
 - 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
 - variables: lastBagKey
 
-### src/ui/info.js (167 lines)
+### src/ui/info.js (170 lines)
 Discovery cards, hover info (I) and the cursor label.
 - functions: showCard, howText, discoveryCard, reactionsOf, hoverInfo, renderInfo, drawCursorLabel
 
@@ -411,7 +411,7 @@ Keyboard and mouse listeners.
 - functions: isTyping
 - variables: canvas
 
-### src/ui/actions.js (244 lines)
+### src/ui/actions.js (242 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
@@ -426,7 +426,7 @@ Previews drawn under the cursor: build ghosts, drill aim and pulses, selections,
 - functions: blockRectPx, drawGrid, previewColor, crackSeg, drawCracks, pulseRGB, fanPoints, drawDrillPulses, drawDrillAim, drawPreviews, drawTag, drawSelection, drawPastePreview
 - variables: CRACK_N, CRACK_LV, SEL_COL
 
-### src/ui/events.js (50 lines)
+### src/ui/events.js (42 lines)
 Events from the simulation (emit) turned into sounds, toasts and cards.
 - functions: drainEvents
 
@@ -469,4 +469,5 @@ The frame loop and boot.
 - `tools/experiments/worldgen.js`: World generation report: time to generate, how many cells of each material, where the bot starts, and what idle ticks and ticks after digging cost.
 - `tools/scenes/belt-heap.js`: A belt feeding an upward screw: sand underneath a deep heap of copper ore. Run clear-sky.js first, e.g. python3 tools/shot.py /tmp/belt-heap.png --setup tools/scenes/clear-sky.js --js "$(cat tools/scenes/belt-heap.js)" --ticks 240 --zoom 7
 - `tools/scenes/clear-sky.js`: A clear work area left of the bot's starting point (the trade dock is to its right): open sky 160 grains wide and 40 tall, over a flat stone floor. Money and a bag of building stuff to build with. Sets FLOOR (the first row of the floor), BX, BY (the leftmost block of the area that stands on the floor) and CAM (the middle of the area).
+- `tools/scenes/mold-labels.js`: Run after clear-sky.js: filling, blocked, set, and hot machinery in one view.
 - `tools/scenes/stone-uses.js`: The stone and sand machines: a half-full silo with its gate open over a belt, a stone cutter fed with rubble, and cut stone and glass brick walls. Run clear-sky.js first, e.g. python3 tools/shot.py /tmp/stone.png --setup tools/scenes/clear-sky.js --js "$(cat tools/scenes/stone-uses.js)" --ticks 240 --zoom 7

docs/agent-log.md

@@ -4,6 +4,28 @@ 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.
 
+## 2026-10-23: fewer, smaller messages (Claude Code, with Codex)
+
+Note: "lets change the engot mold and other status messages. they are way too large and just too
+many messages…". The owner chose molds, machine warnings and shorter status lines.
+
+- `src/render/overlays.js`: every mold always shows a small percentage (`moldLabel`), gold
+  `100% · F` for a set bit or tank, red when spoiled or when an ingot mold is blocked
+  (`mo.blocked`, set in `ejectIngot`, not saved). Details are in the hover panel (`info.js`),
+  which also carries the furnace-loading advice that F messages used to append.
+- `src/ui/events.js`: no cards or toasts for bars dropping, blocked molds or set castings (the
+  sounds stay). Fan heat is a red ! marker on the fan (`mm.hot`, hover shows °C); melted tubes
+  and machines destroyed by heat get a short red floating label (`warn` event, coloured
+  `spawnFloater`) instead of a toast.
+- Status lines shortened to one sentence across `src/sim` (molds, actions, blocks, blueprints,
+  drill, items, machines, tools, undo, vacuum) and `src/ui` (actions, selection).
+- Tests: `play.py` records every status line and checks none is over 90 characters (longest
+  now 55); mold label and no-toast checks. `t_molds` (message lengths, `mo.blocked`), `t_build`
+  (hot fan: `mm.hot`, no toast), `t_world`. All 11 headless suites and `play.py` pass.
+- Shots: `shots/messages-pixel.png`, `shots/messages-smooth.png` (filling, blocked, set bit,
+  hot fan).
+- Open: the first-ever bar drop no longer shows an explaining card; the notebook still explains.
+
 ## 2026-10-23: ingot molds need no F; removing a mold returns its metal (Claude Code, with Codex)
 
 Note: "now that the ingot molds drop the ingots, what is the purpose of F…". The owner chose no F