[EPIC C1] Playable cycle, return memory, and four formal studies #4

Outcome

A playable silent six-encounter composition plus four controlled formal studies; returning carries a visible bounded consequence.

Placement and activation

Master roadmap: #2. C1 mechanics are implemented, tested and privately deployed. The artist's decision, physical-device/accessibility evidence and preview recovery checks remain open.

Canonical numbering is C0–C6. Local source/review evidence is a prerequisite only for the selected path; whole optional epics are not universal release gates.

Child work

• #15 — Versioned six-encounter score
• #16 — Visit state, entrance and bounded trace history
• #17 — Three exact-language chamber renderings
• #18 — Manual/timed clocks and independent time instrument
• #19 — Operable reading and input equivalents
• #20 — Preview, evaluation, artist/device/recovery evidence
• #56 — Four formal-study mechanics (bounded scope completed)

Current delivery and remaining gate

Implemented on PR #59, branch experiment/six-encounters, commit 687bd3e83c668cfe5620f558f74d3388cc0bf0f5. The recorded 11 Node tests and 19 Chromium browser checks cover desktop 1440×1000 and mobile 390×844 viewports. GitHub CI completed successfully for that exact head.

Hosted experimental edition is deployed for owner review; hosting status and private access were checked. The deployment receipt in PR #59 records runtime payload equality. Physical iPhone/Safari, real hidden-tab behavior, screen-reader testing, artist review and external reader observations remain uncollected. Merge into main remains pending. Deployment and technical verification do not establish artistic acceptance.

Artist review asks whether the second encounter can mean something the first could not. Formal-study closure does not close the full artistic, accessibility or release gate.

Completion evidence

Record deliverable, source/score/software versions, exact-head checks, deployment identity where relevant, limits and artist decisions. Planning completion never establishes runtime or artistic acceptance.