Build-out 6: the audience + global leaderboards

- The crowd: 11 seeded silhouette heads along the stage lip — idle sway,
  trembling past anger 0.5, a hard 110-frame duck at the string cut, happy
  bobbing on an S. Deterministic math in update(), harness-safe.
- Global boards: game/scores.ts client (silent-fail, 4s timeout) against the
  arcade server's new /api/sando/scores (via the new partly.party
  /arcade-api/ nginx proxy). Week score = sum of verdict totals across served
  days; KANSEI submits under a remembered chef name and shows rank + podium;
  the title shows top-5.
- E2E proven through https://partly.party/arcade-api/sando/scores (rank 1
  round-trip). Battery unchanged; crowd flinch + score accumulation verified.

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

OPUS-BUILD-BRIEF.md

@@ -85,6 +85,29 @@
   Attract ragdoll → the pulsing title. Verified: title screenshot, click path,
   production `npm run build` clean.
 
+## BUILD-OUT PASS 6 ✅ — the audience + the global board
+- **The crowd**: 11 seeded silhouette heads (shoulders/head/occasional topknot)
+  along the stage lip. Idle sway; trembling once anger>0.5; a hard duck for 110
+  frames at the string cut (`Stage.flinch`); happy bobbing on an S
+  (`cheerCrowd()`). Pure deterministic math in update() — harness-safe.
+- **Global leaderboards**: express endpoints on the arcade server
+  (`/api/sando/scores` GET?week=omote|ura / POST {name,score,week}, json-file
+  storage `sando-scores.json`, top-100 kept) + a new nginx location
+  **`/arcade-api/` → arcade-landing:3001/api/** in the partly.party server
+  block. Game client `game/scores.ts` (4s timeout, silent-fail — the game never
+  notices a dead server). Week score = Σ verdict.total across served days
+  (registry `sando.score`, reset on week start/toggle); KANSEI submits under a
+  remembered chef name (window.prompt once — ponytail: that IS the entry UI)
+  and shows rank + podium; the title shows the top-5 board.
+- **Infra learned the hard way** (documented in arcade-landing repo +
+  `forum-nginx.conf` canonical copy): partly.party is served by the FIRST
+  server block in `/home/humanjing/forum/nginx/nginx.conf` (a bind-mount into
+  forum-nginx; `conf.d/` is NOT included — edits there are inert; docker cp
+  fails busy — edit the host file + `nginx -s reload`).
+- E2E proven: POST via https://partly.party/arcade-api/sando/scores → rank 1 →
+  GET returns it. Battery unchanged; crowd flinches on cut; day-1 serve banks
+  7.63 into the week score.
+
 ## BUILD-OUT PASS 5 ✅ — the judge speaks, the band worries, the jelly wobbles
 - **Live barks**: every sin now earns a subtitled heckle at the foot of the stage
   (`Stage.bark(group, seed)` → the existing line bank; seed varies the pick so

src/game/game.ts

@@ -92,6 +92,10 @@ export class Game {
         this.state = 'served';
         this.lastVerdict = this.serve(true);
         recordGrade(this.day + (this.ura ? 100 : 0), this.lastVerdict.grade); // ura bests live at 100+
+        // the week's running score, headed for the leaderboard at KANSEI
+        const run = ((this.stage.registry.get('sando.score') as number) ?? 0) + this.lastVerdict.total;
+        this.stage.registry.set('sando.score', +run.toFixed(2));
+        if (this.lastVerdict.grade === 'S') this.stage.cheerCrowd();
         this.stage.showScorecard(this.lastVerdict);
       }
     } else {

src/game/scores.ts

@@ -0,0 +1,64 @@
+/**
+ * Global leaderboard client. Same-origin on partly.party via the /arcade-api/
+ * nginx proxy → arcade-landing express. Every call is fire-and-forget with a
+ * short timeout and silent failure — the game must never notice a dead server.
+ * (In local dev there's no proxy; fetches just fail quietly.)
+ */
+
+export interface ScoreRow {
+  name: string;
+  score: number;
+  date: string;
+}
+
+const API = '/arcade-api/sando/scores';
+const TIMEOUT = 4000;
+
+function withTimeout(ms: number): AbortSignal {
+  const c = new AbortController();
+  setTimeout(() => c.abort(), ms);
+  return c.signal;
+}
+
+export async function fetchTop(week: 'omote' | 'ura'): Promise<ScoreRow[]> {
+  try {
+    const r = await fetch(`${API}?week=${week}`, { signal: withTimeout(TIMEOUT) });
+    if (!r.ok) return [];
+    const rows = (await r.json()) as ScoreRow[];
+    return Array.isArray(rows) ? rows : [];
+  } catch {
+    return [];
+  }
+}
+
+export async function submitScore(name: string, score: number, week: 'omote' | 'ura'): Promise<number | null> {
+  try {
+    const r = await fetch(API, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ name, score, week }),
+      signal: withTimeout(TIMEOUT),
+    });
+    if (!r.ok) return null;
+    const j = (await r.json()) as { rank?: number };
+    return j.rank ?? null;
+  } catch {
+    return null;
+  }
+}
+
+/** The chef's name, remembered once. ponytail: window.prompt is the whole name
+ *  entry UI — arcade-appropriate; build letter slots if anyone ever complains. */
+export function chefName(): string | null {
+  try {
+    let n = localStorage.getItem('sandoniette.name');
+    if (!n) {
+      n = (window.prompt('Your chef name for the board? (3-12 letters)') ?? '').trim().slice(0, 12);
+      if (n.length < 3) return null;
+      localStorage.setItem('sandoniette.name', n);
+    }
+    return n;
+  } catch {
+    return null;
+  }
+}

src/scenes/stage.ts

@@ -9,6 +9,7 @@ import type { Group, Verdict } from '../game/judging';
 import { barkFor } from '../game/lines';
 import { sfx, music } from '../game/audio';
 import { loadProgress, unlockUra } from '../game/progress';
+import { chefName, fetchTop, submitScore } from '../game/scores';
 
 const PORTRAITS = ['samurai_calm', 'samurai_watch', 'samurai_annoyed', 'samurai_angry', 'samurai_fury'];
 
@@ -58,6 +59,10 @@ export class Stage extends Phaser.Scene {
   private barkText?: Phaser.GameObjects.Text;
   private barkSub?: Phaser.GameObjects.Text;
   private wobbleParts = new Map<MatterJS.BodyType, { bodies: MatterJS.BodyType[]; cons: MatterJS.ConstraintType[] }>();
+  private crowd: { c: Phaser.GameObjects.Container; x: number; ph: number; sz: number }[] = [];
+  private crowdT = 0;
+  private flinch = 0; // frames of post-slash cowering left
+  private cheer = 0; // frames of S-grade bobbing left
 
   constructor() {
     super('stage');
@@ -148,6 +153,23 @@ export class Stage extends Phaser.Scene {
     this.barkSub = this.add.text(STAGE_W / 2, 696, '', { fontFamily: 'serif', fontSize: '13px', color: '#9a8a6a', fontStyle: 'italic' })
       .setOrigin(0.5).setDepth(8).setAlpha(0);
 
+    // the audience — a row of little silhouette heads at the foot of the stage,
+    // watching from the dark like any good shadow theatre. They sway, they
+    // flinch when the blade comes out, they bob for an S. Seeded layout so the
+    // same crowd shows up every night.
+    this.crowd = [];
+    let cs = 77;
+    const crnd = () => ((cs = (cs * 1103515245 + 12345) & 0x7fffffff) / 0x7fffffff);
+    for (let i = 0; i < 11; i++) {
+      const x = 40 + i * (STAGE_W - 80) / 10 + (crnd() - 0.5) * 40;
+      const sz = 0.75 + crnd() * 0.5;
+      const c = this.add.container(x, STAGE_H + 6).setDepth(9);
+      c.add(this.add.ellipse(0, 0, 64 * sz, 46 * sz, 0x060403)); // shoulders
+      c.add(this.add.circle(0, -26 * sz, 17 * sz, 0x060403)); // head
+      if (crnd() < 0.35) c.add(this.add.rectangle(12 * sz, -40 * sz, 8 * sz, 14 * sz, 0x060403).setRotation(0.3)); // topknot
+      this.crowd.push({ c, x, ph: crnd() * Math.PI * 2, sz });
+    }
+
     // ambient weather for the hour: dust motes at noon, petals at dusk,
     // fireflies by night. A 5px generated dot is the whole particle budget.
     if (!this.textures.exists('mote')) {
@@ -194,13 +216,9 @@ export class Stage extends Phaser.Scene {
     // game for real (SHIN-KANSEI), then it's back to a quiet noon kitchen.
     this.input.on('pointerdown', () => {
       if (this.kansei) {
-        if (this.session.ura) {
+        this.registry.set('sando.ura', !this.session.ura);
-          this.registry.set('sando.ura', false);
+        this.registry.set('sando.day', 0);
-          this.registry.set('sando.day', 0);
+        this.registry.set('sando.score', 0); // fresh week, fresh run
-        } else {
-          this.registry.set('sando.ura', true);
-          this.registry.set('sando.day', 0);
-        }
         this.scene.restart();
       } else if (this.session.state === 'served') {
         if (this.session.day + 1 >= this.session.days.length) this.showKansei();
@@ -252,6 +270,22 @@ export class Stage extends Phaser.Scene {
         fontFamily: 'serif', fontSize: '16px', color: ura ? '#9a8a6a' : '#e04a30',
       }).setOrigin(0.5),
     );
+    // the week's score → the global board (fire-and-forget; card updates when
+    // the server answers, and shows nothing if it never does)
+    const weekScore = (this.registry.get('sando.score') as number) ?? 0;
+    const week = ura ? 'ura' : 'omote';
+    g.add(this.add.text(cx, 305, `week score  ${weekScore.toFixed(1)} / 80`, { fontFamily: 'monospace', fontSize: '15px', color: '#c8a24a' }).setOrigin(0.5));
+    const rankLine = this.add.text(cx, 328, '', { fontFamily: 'monospace', fontSize: '13px', color: '#9a8a6a' }).setOrigin(0.5);
+    g.add(rankLine);
+    const name = weekScore > 0 ? chefName() : null;
+    if (name) {
+      void submitScore(name, weekScore, week).then(async (rank) => {
+        const top = await fetchTop(week);
+        if (!g.active) return; // card already dismissed
+        const podium = top.slice(0, 3).map((r, i) => `${i + 1}. ${r.name} ${r.score.toFixed(1)}`).join('   ');
+        rankLine.setText(`${rank ? `board rank #${rank}` : ''}${podium ? `   ·   ${podium}` : ''}`);
+      });
+    }
     this.scorecard = g; // rides the same clear path
   }
 
@@ -313,10 +347,42 @@ export class Stage extends Phaser.Scene {
     }
     this.slashFx();
     music.stop(); // the band stops when the blade comes out
+    this.flinch = 110; // the audience ducks
     sfx.slash();
     sfx.gong();
   }
 
+  /** An S-grade serve gets the little heads bobbing. */
+  cheerCrowd(): void {
+    this.cheer = 240;
+  }
+
+  /** The audience breathes every frame: idle sway, unease as the meter climbs,
+   *  a hard duck at the slash, happy bobbing for an S. Pure deterministic math
+   *  driven from update() so it works under the harness too. */
+  private updateCrowd(): void {
+    this.crowdT++;
+    const anger = this.session.samurai.anger;
+    if (this.flinch > 0) this.flinch--;
+    if (this.cheer > 0) this.cheer--;
+    for (let i = 0; i < this.crowd.length; i++) {
+      const m = this.crowd[i];
+      const sway = Math.sin(this.crowdT * 0.02 + m.ph) * 3;
+      const tremble = anger > 0.5 ? Math.sin(this.crowdT * 0.55 + m.ph * 3) * anger * 2.2 : 0;
+      let y = STAGE_H + 6;
+      let x = m.x + sway + tremble;
+      if (this.flinch > 0) {
+        // duck below the stage lip, then creep back up
+        const t = Math.min(1, this.flinch / 40);
+        y += 34 * t * m.sz;
+        x = m.x + Math.sin(this.crowdT * 0.8 + m.ph) * 1.2;
+      } else if (this.cheer > 0) {
+        y -= Math.abs(Math.sin(this.crowdT * 0.25 + m.ph)) * 10;
+      }
+      m.c.setPosition(x, y);
+    }
+  }
+
   private slashFx(): void {
     const line = this.add.rectangle(STAGE_W / 2, STAGE_H / 2, STAGE_W * 1.5, 7, 0xffffff).setDepth(20).setRotation(-0.5);
     this.tweens.add({ targets: line, alpha: 0, duration: 450, onComplete: () => line.destroy() });
@@ -568,6 +634,7 @@ export class Stage extends Phaser.Scene {
     }
     this.drawStrings();
     this.drawServe();
+    this.updateCrowd();
     this.refreshOrder();
     this.updateHUD();
   }

src/scenes/title.ts

@@ -3,6 +3,7 @@ import { sfx, music } from '../game/audio';
 import { STRING_STYLES, type StringStyle } from '../sim/marionette';
 import { loadProgress } from '../game/progress';
 import { DAYS } from '../game/game';
+import { fetchTop } from '../game/scores';
 
 /**
  * Title card, launched as an overlay over the live stage so the dev harness is
@@ -70,6 +71,7 @@ export class Title extends Phaser.Scene {
         const next = !((this.registry.get('sando.ura') as boolean) ?? false);
         this.registry.set('sando.ura', next);
         this.registry.set('sando.day', 0);
+        this.registry.set('sando.score', 0);
         sfx.enable();
         sfx.shamisen();
         paintWeek(next);
@@ -104,6 +106,14 @@ export class Title extends Phaser.Scene {
       });
     }
 
+    // the global board, bottom-left — top 5 of the week (async; blank offline)
+    const board = this.add.text(28, H - 150, '', { fontFamily: 'monospace', fontSize: '12px', color: '#8a7a5a', lineSpacing: 5 })
+      .setDepth(2);
+    void fetchTop(((this.registry.get('sando.ura') as boolean) ?? false) ? 'ura' : 'omote').then((top) => {
+      if (!board.active || !top.length) return;
+      board.setText(['  TOP CHEFS', ...top.slice(0, 5).map((r, i) => `${i + 1}. ${r.name.padEnd(13)} ${r.score.toFixed(1)}`)].join('\n'));
+    });
+
     // begin: anywhere that isn't a style button. Restart the stage so the puppet
     // is strung with the chosen style, then drop the overlay.
     this.input.on('pointerdown', (_p: Phaser.Input.Pointer, over: unknown[]) => {