Merge remote-tracking branch 'origin/main' into worktree-welcome-screen-controls

Add an explicit /human-experience-simulator/ → /human-machine-strata/ 301 (the
subpath splat doesn't match the trailing-slash root).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

deploy/cloudflare/README.md

@@ -1,7 +1,7 @@
 # Deploying to benstull.art — Cloudflare Pages + R2
 
 Publishes the simulator as a fully-static site: the frontend on **Cloudflare
-Pages** (`benstull.art`, app at `/human-experience-simulator`, apex redirects to
+Pages** (`benstull.art`, app at `/human-machine-strata`, apex redirects to
 it) and the video/audio on **R2** behind `static.benstull.art`. No origin server.
 
 Design: `docs/superpowers/specs/2026-06-30-cloudflare-static-publish-design.md`.
@@ -48,7 +48,7 @@ as a script):
 ```
 
 Produces:
-- `dist/` — Pages output: `dist/human-experience-simulator/` (frontend + baked
+- `dist/` — Pages output: `dist/human-machine-strata/` (frontend + baked
   `clips.json`/`ring.json`/`media-versions.json` + generated `config.js`) and a
   root `dist/_redirects` (apex → app path, and no-slash → slashed).
 - `dist-media/` — R2 upload tree, ~2.3 GB / 604 files, manifest-referenced only
@@ -109,7 +109,7 @@ Then **in the dashboard** (Workers & Pages → project → Custom domains) — t
 no wrangler CLI for Pages custom domains:
 - Bind **`benstull.art`** to the project. (Allow a few minutes — a fresh bind
   serves `522` until the cert/routing provisions.)
-- The app serves at `benstull.art/human-experience-simulator/`; the shipped
+- The app serves at `benstull.art/human-machine-strata/`; the shipped
   `dist/_redirects` sends `/` and the no-slash form to it.
 
 ## 4. Verify before/after going live
@@ -121,7 +121,7 @@ curl -sI -H "Origin: https://benstull.art" -H "Range: bytes=0-1" \
 ```
 
 Open `https://benstull.art/` → should redirect to
-`https://benstull.art/human-experience-simulator/`. Turn the **Feel** knob to max
+`https://benstull.art/human-machine-strata/`. Turn the **Feel** knob to max
 and confirm the dream effect renders (no `SecurityError` in the console — that
 would mean CORS is misconfigured and the GL texture is tainted). The local
 static-build E2E (`simulator/e2e/tests/static-build.spec.ts`) exercises this same

deploy/cloudflare/deploy.sh

@@ -15,7 +15,7 @@ set -euo pipefail
 BUCKET="${BUCKET:-human-experience-simulator-media}"
 PROJECT="${PROJECT:-human-experience-simulator}"
 MEDIA_BASE="${MEDIA_BASE:-https://static.benstull.art/}"
-APP_PATH="${APP_PATH:-/human-experience-simulator}"
+APP_PATH="${APP_PATH:-/human-machine-strata}"
 BRANCH="${BRANCH:-main}"
 JOBS="${JOBS:-10}"
 

sessions/0038/SESSION-0038.0-TRANSCRIPT-2026-06-30T12-25--2026-06-30T13-20.md

@@ -0,0 +1,102 @@
+# Session 0038.0 — Transcript
+
+> App: human-experience-filter-art
+> Start: 2026-06-30T12-25 (PST)
+> Type: planning-and-executing
+> Posture: yolo
+> Claude-Session: 52b811fa-0926-4619-ae31-3c71d489c686
+> Checkout: /Users/benstull/git/benstull.org/benstull/human-experience-filter-art
+> End: 2026-06-30T13-20 (PST)
+> Status: **FINALIZED.**
+
+## Summary
+
+Added a **Playback Speed slider** to the simulator's Output panel, replacing the
+"Reduce motion" toggle. Designed (brainstorm → spec), built TDD-first, shipped to
+`main`, then **revised the scale after operator eyeball**: the initial −2×…2×
+range with a manual reverse loop jittered in a real browser (base loop clips
+aren't all-intra), so it was narrowed to **0×–4× forward** and the reverse
+machinery removed.
+
+### Arc
+
+1. **Brainstorm** (no tracked init this session — claimed s0038 at finalize).
+   Surfaced the real tradeoff: "Reduce motion" is the a11y safety control
+   (`isReduced()`), doing three things beyond freezing the loop (OS-pref default,
+   instant transitions, photosensitivity floor). Two operator decisions via
+   AskUserQuestion: **keep a11y but move it** (derive from OS
+   `prefers-reduced-motion`, no visible toggle) and **implement a true manual
+   reverse loop** for the negative range.
+2. **Spec** written + committed to
+   `docs/superpowers/specs/2026-06-30-playback-speed-slider-design.md`.
+3. **Build (round 1, −2…2 + reverse), TDD:** worked in worktree
+   `feat/playback-speed-slider` (off `origin/main`). Pure node-tested
+   `HEFScrub.reverseStep` helper (RED→GREEN); slider + datalist in `index.html`;
+   `applyPlaySpeed` + rAF reverse loop in `app.js`; `isReduced()` re-derived from
+   OS pref; retired `hef.reduceMotion`; i18n `speed.label` + reworded `warn.body`.
+   Verified 14/14 node unit, 13/13 a11y e2e (Task 5 rewritten), static-build e2e
+   2/2 (built the dist bundle to confirm). Merged to `main` (`df8b245`) —
+   concurrent session pushed mid-merge, so rebased onto the new tip and pushed.
+4. **Operator eyeball:** reverse was jittery; operator chose **0×–4×** as the
+   scale.
+5. **Build (round 2, 0×–4× forward):** worktree `feat/speed-forward-0-4x`.
+   Removed the reverse rAF loop + `reverseStep` helper + its 4 unit tests;
+   slider `min=0 max=4`; datalist ticks at 0.5; spec annotated with a revision
+   note. Verified 10/10 node unit, 12/12 a11y e2e (against the actually-served
+   worktree code). Merged to `main` (`e064a2e`, clean FF) and pushed.
+6. Served the merged code locally at `http://localhost:8099/` for re-view both
+   rounds.
+
+### Pipeline (§9)
+
+This app is **exempt** from flotilla/PPE/§9 prod gate — public target is static
+Cloudflare (Pages + R2). Change is merged to `main`; **operator redeploy** of the
+static build is the remaining ship step. E2E browser tests (Playwright) were run
+locally and are green. No plan artifact archived: design lived in the spec
+(already in this repo's `specs/`, merged); app has no `content` repo.
+
+### Next session
+
+Operator by-eye review of the 0×–4× speed feel on the live sim, then redeploy to
+Cloudflare to publish it.
+
+## Launch prompt
+
+> Let's add a "Playback Speed" slider that goes from -2x (which would play
+> backwards) to 2x, with increments of 0.25. This only applies to the altitude
+> videos, not the morph videos. This can replace the "Reduce motion" toggle
+
+_(Mid-session the operator refined: continuous drag rather than 0.25 detents;
+then, after eyeballing reverse jitter, narrowed the scale to 0×–4× forward.)_
+
+## Plan
+
+> Anchor: leaf `feature`/`task` (UI control on an existing surface). Design →
+> spec → TDD build → ship branch → PR/merge → operator redeploy.
+
+Continuous Playback Speed slider driving ONLY the resting altitude loop video
+(`#vid-loop`); morph/transition video (`#vid`) is scrub-driven and untouched.
+Reduced-motion accessibility preserved but derived silently from OS
+`prefers-reduced-motion` (slider disabled when active). Shipped −2…2 with a
+manual reverse loop first (pure node-tested `reverseStep`); after operator
+eyeball found reverse jittery (base clips not all-intra), narrowed to 0×–4×
+forward and removed the reverse machinery. Verification: node unit + Playwright
+a11y e2e + static-build e2e, all green per round. Project exempt from §9/PPE
+(static Cloudflare).
+
+## Deferred decisions
+
+- **Direct FF-merge to `main` (no PR).** Operator explicitly said "Merge to
+  main," so both rounds landed via fast-forward (round 1 rebased over a
+  concurrent push) rather than opening a Gitea PR. Alternative: branch → PR →
+  merge (§5.4 norm). Operator-directed, so low risk.
+- **Readout shows the exact continuous value, ticks carry the round numbers.**
+  The slider value is shown as e.g. `1.37×`; the "nice" increments (0.5 marks)
+  live as `<datalist>` ticks rather than snapping the value. My call within the
+  approved design; operator approved the spec.
+- **Datalist tick spacing 0.5 over 0–4** (vs 0.25 over −2…2 in round 1). Cosmetic
+  choice to avoid clutter on the wider forward range. My call.
+- **Reverse fully removed, not kept as a smaller range.** Operator said "just go
+  0x - 4x as the scale," so the `reverseStep` helper + tests were deleted rather
+  than parked. If reverse is wanted later, re-encode base loop clips all-intra
+  first (noted in memory + spec revision).

sessions/sessions.json

@@ -109,5 +109,8 @@
   },
   "0037": {
     "title": ""
+  },
+  "0038": {
+    "title": ""
   }
 }

simulator/e2e/tests/a11y.spec.ts

@@ -49,7 +49,7 @@ test.describe("Task 4 — Photosensitivity notice", () => {
 });
 
 test.describe("Task 5 — Playback speed slider + Reduce motion", () => {
-  test("Speed is a 0–4x forward slider; the loop follows it (default 1x)", async ({ page }) => {
+  test("Speed is a 0–2x forward slider; the loop follows it (default 1x)", async ({ page }) => {
     await page.emulateMedia({ reducedMotion: "no-preference" });
     await page.goto("/");
     await enter(page);
@@ -57,17 +57,17 @@ test.describe("Task 5 — Playback speed slider + Reduce motion", () => {
     await expect(slider).toBeVisible();
     await expect(slider).toHaveValue("1");          // default = normal speed
     await expect(slider).toHaveAttribute("min", "0");
-    await expect(slider).toHaveAttribute("max", "4");
+    await expect(slider).toHaveAttribute("max", "2"); // capped at 2x — base clips aren't all-intra, so >2x stutters
   });
 
-  test("forward speed sets the loop video's playbackRate (up to 4x)", async ({ page }) => {
+  test("forward speed sets the loop video's playbackRate (up to 2x)", async ({ page }) => {
     await page.emulateMedia({ reducedMotion: "no-preference" });
     await page.goto("/");
     await enter(page);
-    await page.locator("#play-speed").fill("4");
+    await page.locator("#play-speed").fill("2");
     await expect
       .poll(() => page.locator("#vid-loop").evaluate((v: HTMLVideoElement) => v.playbackRate))
-      .toBe(4);
+      .toBe(2);
   });
 
   test("0x freezes the loop video", async ({ page }) => {

simulator/e2e/tests/altitude-lock.spec.ts

@@ -108,6 +108,20 @@ test("dragging the dial scrubs morph currentTime and audio gains", async ({ page
   await page.mouse.up();
 });
 
+test("reduce motion: selecting a new altitude still swaps to a fresh clip (instant cut)", async ({ page }) => {
+  await boot(page);
+  // #scale-name reads "<scale> · <clip>  (i/n)"; extract the clip id.
+  const clipId = (s: string) => (s.split("·")[1] || "").split("(")[0].trim();
+  await page.locator('label[for="reduce-motion"]').click();   // engage reduce motion
+  await expect(page.locator("#reduce-motion")).toBeChecked();
+  const before = (await page.locator("#scale-name").textContent())!;
+  await wheelOnStage(page, 60);                                // descend one altitude (instant cut)
+  await page.waitForFunction(() => /orbit/.test(document.querySelector("#scale-name")?.textContent || ""), null, { timeout: 20000 });
+  const after = (await page.locator("#scale-name").textContent())!;
+  expect(after).toContain("orbit");
+  expect(clipId(after)).not.toBe(clipId(before));             // the clip actually changed (not stuck on the old scale's clip)
+});
+
 test("wheel auto-scrubs one altitude and locks", async ({ page }) => {
   await boot(page);
   const start = (await page.locator("#scale-name").textContent())!;

simulator/e2e/tests/static-build.spec.ts

@@ -3,7 +3,7 @@ import { test, expect, Page } from "@playwright/test";
 // Runs against the BUILT static site: dist/ served on :8077, media (CORS) on :8078
 // by serve-static.mjs. Build with `--media-base http://localhost:8078/` so config.js
 // points media cross-origin — the production CORS path, locally. See README.md.
-const APP = "http://localhost:8077/human-experience-simulator/";
+const APP = "http://localhost:8077/human-machine-strata/";
 
 // Enter the simulation via the welcome screen (Video defaults on → media plays).
 async function enter(page: Page) {

simulator/static/about.html

@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <title>About — Human Experience Filter</title>
+  <title>About — Human/Machine Strata</title>
   <link rel="stylesheet" href="style.css" />
 </head>
 <body class="credits-page">
@@ -15,7 +15,7 @@
 
     <section>
       <h2>For everyone</h2>
-      <p>The <em>Human Experience Filter</em> is built to be accessible to — and
+      <p><em>Human/Machine Strata</em> is built to be accessible to — and
       representative of — the full range of human experience. That is why it works
       with a keyboard, with a screen reader, with reduced motion, and away from any
       single screen or kiosk: an experience about being human should be open to as

simulator/static/app.js

@@ -1015,6 +1015,12 @@ function setPos(next) {
   const { lo, frac } = HEFScrub.segmentOf(pos);
   if (frac === 0) {            // settled exactly on an altitude → lock + base loop + single soundtrack
     busy = false;
+    // If we JUMPED straight here (a reduced-motion instant cut skips the segment that
+    // would re-roll the destination), activeClipId still points at the previous
+    // altitude's clip. Re-roll from this altitude's pool so the video actually changes.
+    if (!poolIds(ring.scales[ringIndex]).includes(activeClipId)) {
+      activeClipId = pickPoolClip(ringIndex, activeClipId);
+    }
     delete vid.dataset.morph;  // clear so re-entering the same segment reloads the morph (not the base)
     currentClipId = null;      // force ensureClipMedia to reload + loop the locked clip
     // Land the loop on the frame the morph last showed for THIS travel direction:

simulator/static/author.html

@@ -3,12 +3,12 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <title>HEF — Label Author Mode</title>
+  <title>Human/Machine Strata — Label Author Mode</title>
   <link rel="stylesheet" href="/style.css" />
   <link rel="stylesheet" href="/author.css" />
 </head>
 <body class="author">
-  <header><h1>HEF — Label Author Mode</h1>
+  <header><h1>Human/Machine Strata — Label Author Mode</h1>
     <p class="hint">Scrub a pool clip · drag a box on a subject · run the tracker · author the tiers · save to the manifest. Geometry is propagated; <strong>semantics are hand-authored</strong> (content-pipeline §11.5). <a href="/">← back to preview</a></p>
   </header>
   <main>

simulator/static/credits.html

@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <title>Credits — Human Experience Filter</title>
+  <title>Credits — Human/Machine Strata</title>
   <link rel="stylesheet" href="style.css" />
 </head>
 <body class="credits-page">
@@ -19,7 +19,7 @@
     <section class="declaration">
       <h2>License &amp; reuse</h2>
       <p>
-        The <em>Human Experience Filter</em> alters its source footage in real time
+        <em>Human/Machine Strata</em> alters its source footage in real time
         (overlays, an emotion/affect channel, and a WebGL “dream” shader), so every
         frame you see is a <strong>derivative</strong> of the original clip.
       </p>

simulator/static/i18n.js

@@ -17,7 +17,7 @@
 
   // Visitor-facing control chrome. Keys match `data-i18n` attributes in index.html.
   const UI_STRINGS = {
-    "app.title":      { en: "Human Experience Filter — Alteration Preview", es: "Filtro de Experiencia Humana — Vista previa de alteración", fr: "Filtre d’Expérience Humaine — Aperçu d’altération", ja: "ヒューマン・エクスペリエンス・フィルター — 変容プレビュー" },
+    "app.title":      { en: "Human/Machine Strata", es: "Human/Machine Strata", fr: "Human/Machine Strata", ja: "Human/Machine Strata" },
     "loading.title":  { en: "Loading Universe", es: "Cargando el universo", fr: "Chargement de l’univers", ja: "宇宙を読み込み中" },
     "welcome.launch": { en: "Launch Simulator", es: "Iniciar simulador", fr: "Lancer le simulateur", ja: "シミュレーターを起動" },
     "credits.link":   { en: "ⓘ Credits & licenses", es: "ⓘ Créditos y licencias", fr: "ⓘ Crédits et licences", ja: "ⓘ クレジットとライセンス" },
@@ -25,13 +25,12 @@
     "output.video":   { en: "Video", es: "Vídeo", fr: "Vidéo", ja: "映像" },
     "output.audio":   { en: "Audio", es: "Audio", fr: "Audio", ja: "音声" },
     "altitude.legend":{ en: "Altitude", es: "Altitud", fr: "Altitude", ja: "高度" },
-    "altitude.hint":  { en: "Turn the knob (drag it, or scroll) to change altitude — endless: past the deepest it wraps back up to the highest. Click a label to jump there.", es: "Gira el dial (arrástralo o desplázate) para cambiar la altitud — sin fin: tras lo más profundo vuelve a lo más alto. Haz clic en una etiqueta para saltar.", fr: "Tournez le cadran (glissez ou faites défiler) pour changer d’altitude — sans fin : après le plus profond, on revient au plus haut. Cliquez sur une étiquette pour y aller.", ja: "ダイヤルを回して（ドラッグまたはスクロール）高度を変えます — 無限ループ：最も深い先は最も高い所へ戻ります。ラベルをクリックでそこへ移動。" },
-    "knobs.legend":   { en: "Experience knobs (0–4)", es: "Mandos de experiencia (0–4)", fr: "Boutons d’expérience (0–4)", ja: "体験つまみ（0〜4）" },
+    "knobs.legend":   { en: "Experience knobs", es: "Mandos de experiencia", fr: "Boutons d’expérience", ja: "体験つまみ" },
     "knobs.think":    { en: "Think", es: "Pensar", fr: "Penser", ja: "考える" },
     "knobs.feel":     { en: "Feel", es: "Sentir", fr: "Ressentir", ja: "感じる" },
     "knobs.mood":     { en: "Mood — dark ◀ 0 ▶ light", es: "Ánimo — oscuro ◀ 0 ▶ claro", fr: "Humeur — sombre ◀ 0 ▶ clair", ja: "ムード — 暗 ◀ 0 ▶ 明" },
     "devmode.label":  { en: "Dev Mode", es: "Modo desarrollo", fr: "Mode dév", ja: "開発モード" },
-    "speed.label":    { en: "Speed", es: "Velocidad", fr: "Vitesse", ja: "再生速度" },
+    "speed.label":    { en: "Video speed", es: "Velocidad de vídeo", fr: "Vitesse vidéo", ja: "映像速度" },
     "rm.label":       { en: "Reduce motion", es: "Reducir movimiento", fr: "Réduire les animations", ja: "動きを減らす" },
     "warn.title":     { en: "Heads up — motion & flashing", es: "Atención — movimiento y destellos", fr: "Attention — mouvement et flashs", ja: "ご注意 — 動きと点滅" },
     "warn.body":      { en: "This experience contains continuous motion, flashing, and shifting imagery. If you are sensitive to motion or flashing light, turn on “Reduce motion” below before you launch — altitude changes will cut instantly instead of animating.", es: "Esta experiencia contiene movimiento continuo, destellos e imágenes cambiantes. Si eres sensible al movimiento o a las luces parpadeantes, activa «Reducir movimiento» abajo antes de iniciar — los cambios de altitud serán cortes instantáneos en vez de animarse.", fr: "Cette expérience contient des mouvements continus, des flashs et des images changeantes. Si vous êtes sensible au mouvement ou aux lumières clignotantes, activez « Réduire les animations » ci-dessous avant de lancer — les changements d’altitude seront des coupes instantanées au lieu de s’animer.", ja: "この体験には連続した動き、点滅、変化する映像が含まれます。動きや点滅する光に敏感な方は、起動する前に下の「動きを減らす」をオンにしてください — 高度の変化はアニメーションせず瞬時に切り替わります。" },

simulator/static/index.html

@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <title>HEF — Alteration Simulator</title>
+  <title>Human/Machine Strata</title>
   <link rel="stylesheet" href="style.css" />
 </head>
 <body>
@@ -21,8 +21,8 @@
         <label class="lang-pick">🌐
           <select id="welcome-lang" aria-label="Language"></select>
         </label>
-        <label class="audio-level play-speed"><span data-i18n="speed.label">Speed</span>
-          <input type="range" id="welcome-play-speed" min="0" max="4" step="any" value="1"
+        <label class="audio-level play-speed"><span data-i18n="speed.label">Video speed</span>
+          <input type="range" id="welcome-play-speed" min="0" max="2" step="any" value="1"
                  list="play-speed-ticks" aria-describedby="welcome-play-speed-val" />
           <span id="welcome-play-speed-val">1.00×</span>
         </label>
@@ -44,7 +44,7 @@
     </div>
   </div>
   <header>
-    <h1 data-i18n="app.title">Human Experience Filter — Alteration Preview</h1>
+    <h1 data-i18n="app.title">Human/Machine Strata</h1>
     <a href="about.html" class="credits-link" data-i18n="about.link">About</a>
     <a href="credits.html" class="credits-link" data-i18n="credits.link">ⓘ Credits &amp; licenses</a>
   </header>
@@ -65,6 +65,16 @@
 
     <section class="panel">
       <div id="sr-status" class="visually-hidden" role="status" aria-live="polite"></div>
+      <fieldset>
+        <legend data-i18n="altitude.legend">Altitude</legend>
+        <div class="dial-wrap">
+          <svg id="dial" viewBox="0 0 100 100" role="slider" tabindex="0"
+               aria-label="Altitude — turn or use arrow keys to change scale"
+               aria-valuemin="0" aria-valuenow="0" aria-valuetext="cosmos"></svg>
+        </div>
+        <span id="scale-name" class="scale-name">—</span>
+      </fieldset>
+
       <fieldset>
         <legend data-i18n="output.legend">Output</legend>
         <label class="dev-switch" for="visual">
@@ -76,15 +86,15 @@
           <input type="range" id="audio" min="0" max="10" value="0" step="1" />
           <span id="audio-level-val">0</span>/10
         </label>
-        <label class="audio-level play-speed"><span data-i18n="speed.label">Speed</span>
-          <input type="range" id="play-speed" min="0" max="4" step="any" value="1"
+        <label class="audio-level play-speed"><span data-i18n="speed.label">Video speed</span>
+          <input type="range" id="play-speed" min="0" max="2" step="any" value="1"
                  list="play-speed-ticks" aria-describedby="play-speed-val" />
           <span id="play-speed-val">1.00×</span>
         </label>
         <datalist id="play-speed-ticks">
-          <option value="0"></option><option value="0.5"></option><option value="1"></option>
-          <option value="1.5"></option><option value="2"></option><option value="2.5"></option>
-          <option value="3"></option><option value="3.5"></option><option value="4"></option>
+          <option value="0"></option><option value="0.25"></option><option value="0.5"></option>
+          <option value="0.75"></option><option value="1"></option><option value="1.25"></option>
+          <option value="1.5"></option><option value="1.75"></option><option value="2"></option>
         </datalist>
         <label class="dev-switch" for="reduce-motion">
           <input type="checkbox" id="reduce-motion" />
@@ -97,18 +107,7 @@
       </fieldset>
 
       <fieldset>
-        <legend data-i18n="altitude.legend">Altitude</legend>
-        <div class="dial-wrap">
-          <svg id="dial" viewBox="0 0 100 100" role="slider" tabindex="0"
-               aria-label="Altitude — turn or use arrow keys to change scale"
-               aria-valuemin="0" aria-valuenow="0" aria-valuetext="cosmos"></svg>
-        </div>
-        <span id="scale-name" class="scale-name">—</span>
-        <p class="hint" data-i18n="altitude.hint">Turn the knob (drag it, or scroll) to change altitude — endless: past the deepest it wraps back up to the highest. Click a label to jump there.</p>
-      </fieldset>
-
-      <fieldset>
-        <legend data-i18n="knobs.legend">Experience knobs (0–4)</legend>
+        <legend data-i18n="knobs.legend">Experience knobs</legend>
         <label><span data-i18n="knobs.think">Think</span> <input type="range" id="left" min="0" max="4" value="0" /></label>
         <label><span data-i18n="knobs.feel">Feel</span> <input type="range" id="right" min="0" max="4" value="0" /></label>
         <label><span data-i18n="knobs.mood">Mood — dark ◀ 0 ▶ light</span> <input type="range" id="mood" min="-4" max="4" value="0" /></label>

tests/test_build_static.py

@@ -9,9 +9,9 @@ def test_build_emits_frontend_baked_json_and_only_referenced_media(tmp_path):
     result = build_static(
         out, media,
         media_base="https://static.benstull.art/",
-        app_path="/human-experience-simulator",
+        app_path="/human-machine-strata",
     )
-    app_dir = out / "human-experience-simulator"
+    app_dir = out / "human-machine-strata"
 
     # frontend present under the app path; dev/author surfaces excluded
     assert (app_dir / "index.html").exists()
@@ -25,10 +25,12 @@ def test_build_emits_frontend_baked_json_and_only_referenced_media(tmp_path):
     assert not (app_dir / "author.html").exists()
     assert not list(app_dir.glob("review*.html"))
 
-    # apex + no-slash redirect rules
+    # apex + no-slash redirect rules, plus the permanent legacy-path redirect
     redirects = (out / "_redirects").read_text()
-    assert "/  /human-experience-simulator/  308" in redirects
-    assert "/human-experience-simulator  /human-experience-simulator/  308" in redirects
+    assert "/  /human-machine-strata/  308" in redirects
+    assert "/human-machine-strata  /human-machine-strata/  308" in redirects
+    assert "/human-experience-simulator/  /human-machine-strata/  301" in redirects
+    assert "/human-experience-simulator/*  /human-machine-strata/:splat  301" in redirects
 
     # baked JSON matches the API shape
     clips = json.loads((app_dir / "clips.json").read_text())

tools/build_static.py

@@ -59,23 +59,44 @@ def _write_config(app_dir: Path, media_base: str) -> None:
     )
 
 
+# The app's original deploy path, kept as a permanent redirect so old links to
+# /human-experience-simulator/… still land on the renamed /human-machine-strata/….
+LEGACY_APP_PATH = "human-experience-simulator"
+
+
 def _write_redirects(out: Path, seg: str) -> None:
     # Apex → app path, and the no-trailing-slash form → slashed (so RELATIVE asset
-    # urls resolve under the prefix). Cloudflare Pages `_redirects` syntax.
-    (out / "_redirects").write_text(
-        f"/  /{seg}/  308\n"
-        f"/{seg}  /{seg}/  308\n"
-    )
+    # urls resolve under the prefix). Plus a permanent (301) redirect from the legacy
+    # path to the current one. Cloudflare Pages `_redirects` syntax.
+    lines = [
+        f"/  /{seg}/  308\n",
+        f"/{seg}  /{seg}/  308\n",
+    ]
+    if LEGACY_APP_PATH and LEGACY_APP_PATH != seg:
+        # Exact root (trailing slash) first — the `/*` splat does NOT match the empty
+        # case, so the bare /legacy/ needs its own rule. Then the splat for subpaths,
+        # then the no-trailing-slash form.
+        lines.append(f"/{LEGACY_APP_PATH}/  /{seg}/  301\n")
+        lines.append(f"/{LEGACY_APP_PATH}/*  /{seg}/:splat  301\n")
+        lines.append(f"/{LEGACY_APP_PATH}  /{seg}/  301\n")
+    (out / "_redirects").write_text("".join(lines))
 
 
 def _write_headers(out: Path, seg: str) -> None:
-    # The app shell (html/js/json) must NOT be browser-cached — otherwise a deploy is
-    # invisible to returning visitors for hours (Pages' default is max-age=14400).
-    # `no-cache` = store but revalidate every load (cheap 304 via etag). The media is
-    # on R2 (immutable + content-hash), unaffected. Cloudflare Pages `_headers` syntax.
+    # The app shell must NOT be browser-cached — otherwise a deploy is invisible to
+    # returning visitors for hours (Pages' default is max-age=14400). `no-store`
+    # (never stored → a guaranteed-fresh fetch every visit) for the whole app path:
+    # `no-cache` (revalidate) was NOT enough — Safari served a STALE index from its
+    # disk/bfcache, loaded the OLD versioned JS, and broke the page (black, silent).
+    # A per-HTML no-store override didn't stick (Pages let the `/seg/*` rule win), so
+    # we no-store the whole path. The app shell is tiny (~150 KB); the media is on R2
+    # (immutable + content-hash, a separate domain) and is unaffected. The content-
+    # hashed asset URLs (see _version_assets) remain as belt-and-suspenders for the
+    # case where Pages caches .js/.css at the edge by type and ignores _headers.
+    # Cloudflare Pages `_headers` syntax.
     (out / "_headers").write_text(
         f"/{seg}/*\n"
-        "  Cache-Control: no-cache\n"
+        "  Cache-Control: no-store\n"
     )
 
 
@@ -151,7 +172,7 @@ if __name__ == "__main__":
     ap.add_argument("--out", default="dist")
     ap.add_argument("--media-out", default="dist-media")
     ap.add_argument("--media-base", default="https://static.benstull.art/")
-    ap.add_argument("--app-path", default="/human-experience-simulator")
+    ap.add_argument("--app-path", default="/human-machine-strata")
     a = ap.parse_args()
     r = build_static(a.out, a.media_out, media_base=a.media_base, app_path=a.app_path)
     print(json.dumps(r, indent=2))