Integrate all five lanes: wire main.ts, fix record height contract, verify live

- src/main.ts: full wiring per docs/INTEGRATION.md (renderer/world/booth/
  chunks/machines/player/interaction/audio/fx/hud + fixed-step loop),
  QuestPositions adapter (Lane C nested -> Lane D flat), attachPlayer step,
  pointer-lock-gated input, debug handle for smoke tests.
- core/constants: Y_RECORD_TOP 85 -> 81 (record was an unclimbable 5-voxel
  cliff; now 1 proud of the plinth, auto-steppable) + PLATTER.wellDepth.
- machines/platter: body + collider now fill Lane C's well down to y=74.
- fx/layout: VU sprites aligned to Lane C's physical LED towers.
- interact: per-material break times (dust 0.12s) so the crossfader jam
  isn't a 96-second mine.
- docs/INTEGRATION_NOTES.md: every glue decision + live verification results
  (120 fps, ride/mine/quest/win all green, zero console errors).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/DESIGN.md

@@ -50,7 +50,7 @@ Vertical strata (Y):
 | 0–40 | **Under-table**: inside the plywood console — record crate, parts bin, PCB caves under the gear, cable runs |
 | 40 | **Tabletop** — plywood plateau the gear sits on |
 | 40–80 | Turntable plinths (steel-grey mesas), mixer body |
-| 80–85 | Plinth tops, platter + slipmat + record surface (85 = vinyl top) |
+| 80–81 | Plinth tops; the record surface sits 1 proud of the plinth (81 = vinyl top, auto-steppable), platter body filling the 6-deep well below |
 | 67 | Mixer face plate (knob forest, fader alleys) |
 | 85–140 | Tonearm bridge, dust-cover glass arcs, booth walls, patch-bay wall |
 

docs/INTEGRATION_NOTES.md

@@ -0,0 +1,82 @@
+# TURNCRAFT — Integration Notes (what the integrator changed and why)
+
+Integration performed per [INTEGRATION.md](./INTEGRATION.md) after all five
+lanes landed. Every cross-lane glue decision is listed here.
+
+## Contract changes (core is integrator-owned)
+
+1. **`Y_RECORD_TOP`: 85 → 81** (`src/core/constants.ts`). At 85 the vinyl
+   surface was a 5-voxel cliff above the plinth (jump height ≈ 1.3 — the
+   record was unreachable), and Lane D's platter stack floated on the plinth
+   top, ignoring the 6-deep well Lane C carved. Now the record sits 1 proud of
+   the plinth (auto-steppable, like a real 1200) and the platter body fills
+   the well. Everything downstream (tonearm heights, audio panner positions,
+   FX rim sparkle, D's quest defaults) derives from the constant and moved
+   automatically. Added `PLATTER.wellDepth = 6` alongside.
+2. Lane B's requested `velocityAt` out-param overload was NOT taken: Lane D
+   already returns a reused per-collider scratch array (no allocation), which
+   satisfies the hot-path concern with no contract change.
+
+## Cross-lane glue (in `src/main.ts`)
+
+- **QuestPositions adapter**: Lane C's nested `QUEST_POS` is mapped to Lane
+  D's flat `QuestPositions`; the crossfader slot span is derived from C's
+  `MIXER` anchors (centerX ± halfLen, faceTopY−depth+1 … faceTopY−1, z −1…+2)
+  so D's slide gate covers exactly the tram volume C carved.
+- **`machines.attachPlayer(player)`** called after the player is built
+  (Lane D's added step "6.5") — enables walk-push faders and walk-press plates.
+- **Hotbar**: D's `Hotbar` structurally satisfies E's `HotbarModel`; passed
+  directly as `getHotbar`, with `hotbar.onChange(() => hud.refreshHotbar())`.
+- **Input wiring**: LMB hold = mine, RMB = place, E = use, 1–9/wheel = hotbar,
+  all gated on pointer lock (matching Lane B's own key gating). Start splash
+  click → `audio.init()` + pointer lock; resume click → re-lock only.
+- **Fixed-step loop**: machines → player → interaction → fx at `FIXED_DT`,
+  with `MAX_SUBSTEPS` catch-up and an accumulator clamp so a backgrounded tab
+  doesn't spiral; `audio.updateListener` + `chunks.update()` + render per frame.
+- Debug handle `window.TURNCRAFT` (world/player/machines/quest/hotbar/audio/
+  fx/hud/chunks/interaction) — used by the smoke tests, harmless in play.
+
+## Lane-file adjustments (documented per CONTRACTS "integrator resolves")
+
+- `src/machines/platter.ts` — platter body now spans the well floor to 1
+  below the vinyl (visuals) and its collider spans well floor → `Y_RECORD_TOP`
+  so the spinning body also pushes the player out of the well's 2-voxel gap
+  ring (which is now a real, intentional fall-in hazard).
+- `src/fx/layout.ts` — VU overlay sprites aligned to Lane C's physical LED
+  towers (x = mixer minX+18 / maxX−18, 12 segments, in front of the open
+  casing face) per Lane E's friction note #5.
+- `src/interact/interaction.ts` — per-material break times (soft 0.12 s,
+  glass 0.25 s, default 0.4 s). The crossfader jam is ~240 dust blocks; at a
+  flat 0.4 s it was a 96-second chore.
+- `docs/DESIGN.md` — elevation table updated for the Y_RECORD_TOP change.
+
+## Deviations accepted as-is
+
+- **45 speed available pre-win** (D's reading; DESIGN's "45 unlocked at win"
+  treated as flavor). `Platter.unlocked45` exists if we ever gate it.
+- **`fader_cross` does not drive audio** (E maps pitch + channel digits only);
+  crossfader is quest/physical-only in v1.
+- **Both deck pitch faders drive the one global mix pitch** (E has a single
+  transport; fine until per-deck stems exist).
+- **Tonearm pedestal (C's voxels) vs D's arm pivot** are ~11 voxels apart —
+  cosmetic misalignment, queued for polish, gameplay unaffected.
+
+## Verified at integration (live browser, real code paths)
+
+- Boot: booth builds + meshes in ~670 ms dev / 46 modules build in 0.5 s;
+  fillBox fast path ENABLED; **120 fps**; zero console errors all session.
+- Ride: standing on the record at 33 → clean circle, r drift 20.00→20.02 over
+  4 s, y = 81 exactly, spin-up ramp visible; at 45 near the rim → 10.7 v/s
+  (= ω×r), jump lands back on the moving disc.
+- Mining: real DDA aim → dust breaks into hotbar; crossfader stays gated
+  while dust remains.
+- Quest chain: stems stack 0→5 per `signal:repair`, power switch arms exactly
+  after the 4th repair, real button press → `game:win` once, both platters
+  auto-start, HUD banner + tracker 5/5, AudioContext running.
+- The platter-well gap ring behaves as a trench (collider pushes, no clipping).
+
+## Not yet done (deploy phase)
+
+Run `/ship-check` before exposing anything publicly; deploy per deploy-map
+conventions (static `dist/` — 156 KB gzipped). Cloudflare/host wiring is a
+separate step, to be done with the token holder present.

src/core/constants.ts

@@ -16,7 +16,10 @@ export const WORLD_Z = 256; // front lip -> gear -> cable canyon -> back wall
 export const Y_FLOOR = 0;        // bottom of the under-table crate/cave region
 export const Y_TABLETOP = 40;    // plywood tabletop the gear sits on
 export const Y_PLINTH_TOP = 80;  // top surface of the turntable plinths
-export const Y_RECORD_TOP = 85;  // vinyl surface (platter + mat + record above plinth)
+// Vinyl surface. Sits 1 proud of the plinth (like a real 1200) so the player
+// can auto-step onto the record; the platter body fills the 6-deep well Lane C
+// carved below it. (Integration fix: was 85, an unclimbable 5-voxel cliff.)
+export const Y_RECORD_TOP = 81;
 export const Y_BOOTH_WALL_TOP = 140;
 
 // Gear placement — single source of truth for BOTH worldgen (Lane C) and
@@ -60,6 +63,7 @@ export const MAX_SUBSTEPS = 4;
 export const PLATTER = {
   radius: 41,       // voxels — the full platter incl. strobe-dot edge
   recordRadius: 38, // the vinyl disc sitting on it
+  wellDepth: 6,     // the recessed pit in the plinth the platter body sits in
   rpm33: 2.0,       // "33" — rideable: edge ~8.6 v/s, label area ~2 v/s
   rpm45: 2.7,       // "45" — hazardous: edge ~11.6 v/s, faster than sprint
   spinUpSeconds: 1.2, // torque-y Technics start/stop feel

src/fx/layout.ts

@@ -14,9 +14,12 @@ const m = LAYOUT.mixer;
 const midX = (m.minX + m.maxX) / 2;
 
 // Two LED VU towers at the back of the mixer face, driven by different bands.
+// Aligned to Lane C's physical towers (worldgen buildMixer): 12-tall LED
+// ladders at x = minX+18 / maxX-18, column z = maxZ-7, casing front face open
+// at z-2 — the sprites sit just in front of that opening.
 export const VU_TOWERS: VuTower[] = [
-  { x: m.minX + 14, z: m.maxZ - 6, baseY: m.topY + 3, segments: 14, segH: 2.0, band: 'low' },
-  { x: m.maxX - 14, z: m.maxZ - 6, baseY: m.topY + 3, segments: 14, segH: 2.0, band: 'mid' },
+  { x: m.minX + 18, z: m.maxZ - 9.4, baseY: m.topY + 1, segments: 12, segH: 1.0, band: 'low' },
+  { x: m.maxX - 18, z: m.maxZ - 9.4, baseY: m.topY + 1, segments: 12, segH: 1.0, band: 'mid' },
 ];
 
 // The signal chain, as a polyline the trace sprite runs on each repair:

src/interact/interaction.ts

@@ -14,7 +14,14 @@ import { Fader, QUEST_ITEMS, type MachineSet } from '../machines';
 import type { Hotbar } from './hotbar';
 import { raycastColliders, raycastVoxel, type VoxelHit } from './raycast';
 
-const BREAK_TIME = 0.4; // seconds to mine a block
+// Seconds to mine a block, by material feel: soft stuff (dust, felt) digs
+// fast — the crossfader jam is ~240 dust blocks, and 0.4 s each made that
+// quest node a 90-second chore (integration tune).
+const BREAK_TIME_DEFAULT = 0.4;
+const BREAK_TIME_BY_SOUND: Partial<Record<string, number>> = {
+  soft: 0.12,
+  glass: 0.25,
+};
 
 export class Interaction {
   private readonly world: IVoxelWorld;
@@ -134,7 +141,8 @@ export class Interaction {
       this.breakElapsed = 0;
     }
     this.breakElapsed += dt;
-    if (this.breakElapsed >= BREAK_TIME) {
+    const breakTime = BREAK_TIME_BY_SOUND[blockDef(hit.id).sound] ?? BREAK_TIME_DEFAULT;
+    if (this.breakElapsed >= breakTime) {
       const id: BlockId = hit.id;
       this.hotbar.add(id, 1);
       this.world.setBlock(hit.x, hit.y, hit.z, AIR);

src/machines/platter.ts

@@ -43,9 +43,12 @@ export class Platter extends MachineBase {
     this.cx = spindleX;
     this.cz = spindleZ;
 
-    // ---- Collider: one +Y cylinder spanning plinth top → vinyl surface. ----
-    const halfH = (Y_RECORD_TOP - Y_PLINTH_TOP) / 2; // 2.5
-    const cy = Y_PLINTH_TOP + halfH;                  // 82.5
+    // ---- Collider: one +Y cylinder spanning the platter well floor → vinyl
+    // surface, so the spinning body pushes the player out of the well's gap
+    // ring too (not just off the top). Top face = Y_RECORD_TOP exactly.
+    const wellFloor = Y_PLINTH_TOP - PLATTER.wellDepth; // 74
+    const halfH = (Y_RECORD_TOP - wellFloor) / 2;       // 3.5
+    const cy = wellFloor + halfH;                        // 77.5
     this.collider = {
       id: this.id,
       shape: { kind: 'cylinder', center: [this.cx, cy, this.cz], radius: PLATTER.radius, halfHeight: halfH },
@@ -73,25 +76,29 @@ export class Platter extends MachineBase {
     const r = PLATTER.radius;
     const rr = PLATTER.recordRadius;
 
-    // Platter: brushed dark alu disc just under the record.
+    // Platter: brushed dark alu body filling Lane C's well, its top edge
+    // breaking the plinth surface (Y_PLINTH_TOP) like a real 1200.
+    const wellFloor = Y_PLINTH_TOP - PLATTER.wellDepth;
+    const platterTop = Y_RECORD_TOP - 1.0; // = plinth top plane
     const platterMat = blockMaterial(3, { scale: 0.62, roughness: 0.4 }); // brushed_alu, darkened
-    const platter = cylinderY(r, 1.6, platterMat, 0, Y_PLINTH_TOP + 0.8, 0);
+    const bodyH = platterTop - (wellFloor + 0.2);
+    const platter = cylinderY(r, bodyH, platterMat, 0, wellFloor + 0.2 + bodyH / 2, 0);
     this.spin.add(platter);
 
-    // Strobe-dot ring: small emissive red studs around the platter rim.
+    // Strobe-dot ring: small emissive red studs on the platter's exposed edge.
     const dotMat = blockMaterial(28, { emissive: 0.9 }); // strobe_dot
     const dotCount = 36;
     for (let i = 0; i < dotCount; i++) {
       const a = (i / dotCount) * Math.PI * 2;
       const d = new THREE.Mesh(new THREE.BoxGeometry(1.1, 0.5, 0.7), dotMat);
-      d.position.set(Math.cos(a) * (r - 0.9), Y_PLINTH_TOP + 1.6, Math.sin(a) * (r - 0.9));
+      d.position.set(Math.cos(a) * (r - 0.9), platterTop + 0.15, Math.sin(a) * (r - 0.9));
       d.rotation.y = -a;
       this.spin.add(d);
     }
 
     // Slipmat.
     const slipMat = blockMaterial(7); // slipmat_felt
-    this.spin.add(cylinderY(rr + 1.5, 0.5, slipMat, 0, Y_PLINTH_TOP + 1.9, 0));
+    this.spin.add(cylinderY(rr + 1.5, 0.5, slipMat, 0, Y_RECORD_TOP - 0.75, 0));
 
     // Record body: blue translucent (deck A) / black (deck B).
     const vinylId = deck === 'A' ? 9 : 8; // vinyl_blue / vinyl_black

src/main.ts

@@ -1,22 +1,134 @@
-// TURNCRAFT — integration entry point.
-// This stub is completed during INTEGRATION (docs/INTEGRATION.md), after the
-// lanes land. Lanes DO NOT edit this file; each lane has its own demo entry
-// (demo-*.html + src/demo/*.ts) for standalone verification.
-//
-// Intended wiring order (see docs/INTEGRATION.md):
-//   1. renderer + scene + atlas            (Lane A: src/engine)
-//   2. const world = new VoxelWorld(...)   (Lane A)
-//   3. buildBooth(world)                   (Lane C: src/worldgen)
-//   4. chunk meshes -> scene               (Lane A)
-//   5. const machines = createMachines()   (Lane D: src/machines)
-//   6. player = new PlayerController(world, machines) (Lane B: src/player)
-//   7. interaction = new Interaction(...)  (Lane D: src/interact)
-//   8. audio + fx + hud                    (Lane E: src/audio, src/fx, src/ui)
-//   9. fixed-step game loop: machines.update -> player.update -> fx.update -> render
+// TURNCRAFT — integration entry point (docs/INTEGRATION.md).
+// Wires the five lanes: engine (A), player (B), worldgen (C),
+// machines/interaction (D), audio/fx/ui (E).
 
-const el = document.getElementById('app')!;
-el.innerHTML =
-  '<p style="color:#888;font:14px monospace;padding:2em">' +
-  'TURNCRAFT integration entry — see docs/INTEGRATION.md. ' +
-  'Lane demos live at /demo-engine.html, /demo-player.html, /demo-worldgen.html, ' +
-  '/demo-machines.html, /demo-audio.html</p>';
+import type { Object3D, PerspectiveCamera } from 'three';
+import { FIXED_DT, MAX_SUBSTEPS } from './core/constants';
+import { createRenderer, VoxelWorld, ChunkManager } from './engine';
+import { WORLD_X, WORLD_Y, WORLD_Z } from './core/constants';
+import { buildBooth, SPAWN, QUEST_POS, MIXER } from './worldgen';
+import { createMachines, type QuestPositions } from './machines';
+import { Interaction, Hotbar } from './interact';
+import { PlayerController } from './player';
+import { AudioEngine } from './audio/AudioEngine';
+import { FxSystem } from './fx/FxSystem';
+import { Hud } from './ui/Hud';
+
+const container = document.getElementById('app')!;
+container.innerHTML = '';
+
+// 1–2. Renderer + world. createRenderer builds THE atlas; ChunkManager must
+// share it so setEmissiveBoost reaches the chunk materials (Lane A handoff).
+const { renderer, scene, camera, atlas, setEmissiveBoost, render } = createRenderer(container);
+const world = new VoxelWorld(WORLD_X, WORLD_Y, WORLD_Z);
+
+// 3–4. Build the booth, then mesh it.
+const t0 = performance.now();
+buildBooth(world);
+const chunks = new ChunkManager(world, scene, atlas, 4);
+chunks.buildAll();
+console.info(
+  `[turncraft] booth built+meshed in ${(performance.now() - t0).toFixed(0)} ms, ` +
+  `${chunks.meshCount} chunk meshes`,
+);
+
+// 5. Machines, with Lane C's real quest positions adapted to Lane D's shape
+// (the two lanes defined QuestPositions independently; C's is nested per-node,
+// D's is flat + a crossfader slot span derived from C's MIXER anchors).
+const questPos: QuestPositions = {
+  stylusSocket: QUEST_POS.stylus.socket,
+  rcaPlug: QUEST_POS.rca.plug,
+  rcaSocket: QUEST_POS.rca.socket,
+  crossfaderSlot: {
+    min: [MIXER.centerX - MIXER.crossfaderHalfLen, MIXER.faceTopY - MIXER.crossfaderDepth + 1, MIXER.crossfaderZ - 1],
+    max: [MIXER.centerX + MIXER.crossfaderHalfLen, MIXER.faceTopY - 1, MIXER.crossfaderZ + 2],
+  },
+  fuseBox: QUEST_POS.fuse.box,
+  masterSwitch: QUEST_POS.power.switch,
+};
+const machines = createMachines(world, questPos);
+for (const o of machines.getObject3Ds()) scene.add(o as Object3D);
+
+// 6 (+6.5). Player, then give machines the player view (walk-push faders,
+// walk-press buttons — Lane D handoff friction #2).
+const player = new PlayerController(world, {
+  getColliders: machines.getColliders,
+  camera: camera as PerspectiveCamera,
+  domElement: renderer.domElement,
+  spawn: SPAWN,
+});
+machines.attachPlayer(player);
+
+// 7. Interaction + hotbar.
+const hotbar = new Hotbar();
+const interaction = new Interaction(world, player, machines, hotbar);
+scene.add(interaction.getObject3D());
+
+// 8. Audio, FX, HUD. AudioEngine/FxSystem/Hud self-wire to the bus; audio
+// starts only from the HUD's start-splash click (autoplay policy).
+const audio = new AudioEngine();
+const fx = new FxSystem({ scene, setEmissiveBoost, getLevels: () => audio.getLevels() });
+const hud = new Hud({
+  onStart: () => { void audio.init(); renderer.domElement.requestPointerLock(); },
+  onResume: () => { renderer.domElement.requestPointerLock(); },
+  getHotbar: () => hotbar, // D's Hotbar structurally satisfies E's HotbarModel
+});
+hotbar.onChange(() => hud.refreshHotbar());
+
+let started = false;
+document.addEventListener('pointerlockchange', () => {
+  const locked = document.pointerLockElement === renderer.domElement;
+  if (locked) started = true;
+  else if (started) hud.setPaused(true);
+});
+
+// Interaction input (mouse buttons + E + hotbar keys), gated on pointer lock
+// like Lane B's movement keys.
+const locked = () => document.pointerLockElement === renderer.domElement;
+renderer.domElement.addEventListener('contextmenu', (e) => e.preventDefault());
+renderer.domElement.addEventListener('mousedown', (e) => {
+  if (!locked()) return;
+  if (e.button === 0) interaction.startMining();
+  else if (e.button === 2) interaction.place();
+});
+window.addEventListener('mouseup', (e) => { if (e.button === 0) interaction.stopMining(); });
+window.addEventListener('keydown', (e) => {
+  if (!locked()) return;
+  if (e.code === 'KeyE') interaction.use();
+  else if (e.code.startsWith('Digit')) {
+    const n = parseInt(e.code.slice(5), 10);
+    if (n >= 1 && n <= 9) hotbar.setActive(n - 1);
+  }
+});
+window.addEventListener('wheel', (e) => {
+  if (locked()) hotbar.setActive(hotbar.active + (e.deltaY > 0 ? 1 : -1));
+});
+
+// 9. Fixed-step loop, render decoupled.
+let last = performance.now();
+let acc = 0;
+function frame(now: number): void {
+  requestAnimationFrame(frame);
+  acc += Math.min((now - last) / 1000, 0.25); // clamp huge tab-switch gaps
+  last = now;
+  let steps = 0;
+  while (acc >= FIXED_DT && steps < MAX_SUBSTEPS) {
+    machines.update(FIXED_DT);
+    player.update(FIXED_DT);
+    interaction.update(FIXED_DT);
+    fx.update(FIXED_DT);
+    acc -= FIXED_DT;
+    steps++;
+  }
+  if (steps === MAX_SUBSTEPS) acc = 0; // don't spiral after long stalls
+  audio.updateListener(player);
+  chunks.update();
+  render();
+}
+requestAnimationFrame(frame);
+
+// Dev/debug handle (also used by the integration smoke tests).
+declare global {
+  interface Window { TURNCRAFT: unknown }
+}
+window.TURNCRAFT = { world, player, machines, quest: machines.quest, hotbar, audio, fx, hud, chunks, interaction };