add sessions/0022/SESSION-0022.0-TRANSCRIPT-2026-06-26T08-40--2026-06-26T08-50.md + replace placeholder/variant SESSION-0022.0-TRANSCRIPT-2026-06-26T08-40--INPROGRESS.md
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# Session 0022.0 — Transcript
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> App: human-experience-filter-art
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> Start: 2026-06-26T08-40 (PST)
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> End: 2026-06-26T08-50 (PST)
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> Type: executing-plans (operator-driven follow-up to the audio feature)
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> Posture: yolo
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> Claude-Session: e0cc053a-41fa-416d-a4f5-493f14984e75
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> Status: FINALIZED
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## Launch prompt
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> (1) "It shouldn't say 'Tap to Start Sound'… it can start with both sound and video
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> off but immediately go to the app. We should have a 'Loading Universe…' loading
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> screen until all media has been downloaded and the experience is ready to run."
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> (2) "I still can't hear the sound, even in private mode."
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> (3) "The first time video is turned on, also turn on audio. If audio is turned on
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> before video after the app loads, just audio should turn on."
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## Pre-state
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- Sessions 0020/0021 had shipped the audio feature + a 0021 "Safari fix" (tap-to-start
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overlay that primed A/B `<audio>` elements). The operator reported audio STILL
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silent on their real browser (even in private mode), plus the UX requests above.
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## Session arc
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1. **Why the 0021 fix failed.** It primed *srcless* A/B elements in the tap gesture
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and played the real audio in an *async continuation* (after `await fetch`). Safari
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unlocks an element only when `play()` runs **synchronously inside** the gesture and
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on an element **with a src** — so neither condition was met. Headless WebKit relaxes
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autoplay, which is why automated tests never caught it.
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2. **Redesign (client-only, branch `session-0022`):**
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- **Single `<audio id="aud">`** element (dropped A/B). It's played **synchronously
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inside the toggle's own `change` handler** — the canonical Safari unlock. Altitude
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changes reuse the now-unlocked element with a brief fade-swap.
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- **"Loading Universe…" splash** (`#loading`, in the HTML so it shows pre-JS): `main()`
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now `await`s `preloadAllMedia()` (driving a progress bar), then `hideLoading()`.
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Replaces the tap-to-start wall.
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- **Both toggles default OFF** (black + silent at start) — no autoplay needed until a
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toggle is flipped.
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- **First Video-on couples Audio:** the Video `change` handler, on the first on,
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sets `#audio` checked and plays — in the same gesture (so it unlocks on Safari).
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Audio toggled on first stays audio-only.
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- Server contract unchanged (`{off,soundtrack}`); the client now drives playback
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directly from the ring's `scale.audio`, ignoring `render.audio`.
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3. **Verify + ship.** Rewrote the 5 E2E for the new flow (single `#aud`, no gesture,
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loading wait, the coupling, video-off blanking). Caught a test bug — `#black.hidden`
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is `display:none`, so `wait_for_selector` default (visible) timed out; switched to
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`state="attached"`. **290 passed, 2 skipped; 5 E2E pass.** Verified in headless
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**Chromium AND WebKit**: first-Video-on couples audio, soundtrack plays, video shows,
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zero JS errors; screenshotted the splash + running app. Merged to `main`.
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## Deferred decisions
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_No low-confidence calls — all three were explicit operator requests. The
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single-element synchronous-in-gesture play is the standard Safari remedy._
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## Cut state
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- `main` @ `4ac39c9`, clean, pushed. 290 tests + 5 Playwright E2E pass.
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- **Honest caveat — still unverifiable headlessly:** every engine Playwright ships
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(Chromium, WebKit) relaxes autoplay, so I cannot *prove* real-Safari/iOS now plays.
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The fix is the canonical pattern (sync `play()` in the gesture, real src) and is a
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genuine change from 0021's broken approach — but it needs the operator's real-device ear.
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## Operator plate
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- No tap wall: "Loading Universe…" → app with both toggles off (black/silent). Flip
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**Video** → video + audio together; flip **Audio** alone → audio only.
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- If sound is STILL silent on the real device, that points to something beyond autoplay
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(codec/MIME, file, or element error) — next session should capture `aud.error` and the
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exact browser.
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## Next /goal
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```
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/goal confirm on a REAL device (esp. iPad/Safari) that audio is now audible when Video/Audio is toggled on and the "Loading Universe…" → app flow feels right; if still silent, capture aud.error + the exact browser. Then the deferred per-altitude music layer per docs/audio-candidate-pool.md
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```
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@@ -1,22 +0,0 @@
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# Session 0022.0 — Transcript
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> App: human-experience-filter-art
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> Start: 2026-06-26T08-40 (PST)
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> Type: executing-plans
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> Posture: yolo
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> Claude-Session: e0cc053a-41fa-416d-a4f5-493f14984e75
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> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
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>
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> This file reserves session ID 0022 for human-experience-filter-art. The driver replaces this
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> body with the full transcript and renames the file to its final
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> SESSION-0022.0-TRANSCRIPT-2026-06-26T08-40--<end>.md form at session end.
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## Launch prompt
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_(launch prompt not captured at claim time)_
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## Deferred decisions
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_Autonomous-mode low-confidence calls the driver made and would have
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liked operator input on. Appended as the session runs; surfaced at
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finalize. Empty if none._
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