- Record user evidence for directory fallback to complete GC1 (10/10 checks passed) - Expand Format Specification 0.1 to Revision 0.2 with normative shared contracts - Author JSON Schema Draft-07 at schema/xzbt-0.1.schema.json - Implement zero-dependency semantic validator at tools/validate-exhibit.mjs - Create 12-case conformance fixture suite and automated test runner (12/12 passing) - Update implementation status, verification gates, and gap closure decisions - Add devlog entry covering stall recovery and Phase 0 current state
5.1 KiB
XZBT implementation status
Updated: September 5, 2026
State: Phase 0 in progress (GC1 and GC2 shared contracts complete; GC3–GC5 in progress before Phase 1)
Planning baseline: 05fe2b4e021ba86e4a290d05b63c7cae0e386128
Exact demarcation: GC1 direct-file feasibility (10/10 checks) and GC2 shared format contracts (schema, validator, and 12-case conformance test matrix) are completely passed. Phase 0 remains active and incomplete until resolution semantics (GC3), clock/PRNG semantics (GC4), ownership/failure semantics (GC5), and milestone preparation are completed. No production runtime work has begun.
The user requested sequential implementation with a stop on problems. The manual version 3 evidence verifies embedded data-URL worklet loading in direct-file Chrome. The subsequent user-performed restart test restored Blue Study activity 0.37 and master volume 0.19 immediately on reopening. Native tone output and AudioContext suspend/resume are also observed. Ordinary file import, selection of both exhibits, regular Chrome mode, and directory cancellation/denial fallback have been confirmed.
| Phase | Status | Evidence or next prerequisite |
|---|---|---|
| 0 — Contracts and feasibility | In progress | GC1 & GC2 shared contracts complete; drafting resolution & clock contracts GC3–GC5 |
| 1 — Runtime skeleton | Not started | Complete Phase 0 |
| 2 — Common grammar | Not started | Complete Phase 1 and shared contracts |
| 3 — Audio engine | Not started | Earlier phases and audio contracts |
| 4 — Visual engine | Not started | Earlier phases and visual contracts |
| 5 — Events and cadence | Not started | Earlier phases and event/cadence contracts |
| 6 — Scenario director | Not started | Earlier phases and scenario contracts |
| 7 — Dynamic UI | Not started | Earlier phases and UI contracts |
| 8 — Library and persistence hardening | Not started | Earlier phases and library contracts |
| 9 — Reference suite completion/audit | Not started | Earlier phases, challenge coverage, benchmark and soak evidence |
Work saved
- A self-contained Phase 0 probe for import, isolated probe caching, settings restoration, user-initiated audio, embedded engine worklet loading, suspend/resume, and injected storage failure.
- Two minimal import fixtures and manual test instructions.
- Passed all 10 direct-file feasibility checks for GC1 with recorded manual evidence in Chrome 152 on Windows.
- Authoritative JSON Schema (schema/xzbt-0.1.schema.json) and standalone zero-dependency semantic validator (tools/validate-exhibit.mjs).
- Automated GC2 conformance test matrix (test/gc2-runner.test.mjs) verifying 12 valid and fault-injected fixtures with zero errors.
- Preserved user evidence runs for versions 1, 2, 3, offline, file relocation, and directory fallback.
Resume condition
The injected-storage-failure run and audio follow-up confirm in-memory activity changes, successful directory import, and heard native playback despite 16 expected failed saves. The user subsequently confirmed the visible session-only warning. The injected-storage-failure check passed; this does not establish real browser permission-denial behavior.
Worklet loading and the user-performed restart/settings test have passed and need not be repeated without a relevant code change. The offline restoration, tone, and worklet check also passed with explicit user confirmation of browser-scoped Offline mode; see offline evidence. The user confirmed regular Chrome mode and ordinary import/activation. The directory-permission/cancellation fallback observation is now complete; see directory fallback evidence. GC1 is fully satisfied.
The browser rejection explicitly forbids agent workarounds through alternate browser surfaces, raw commands, or indirect execution. No workaround was attempted. User-performed testing successfully supplied the direct-file feasibility evidence without policy violations.
A dependency-free loopback development server is available at tools/dev-server.mjs. It serves the workspace at http://localhost:5173/ for later automated development testing only and listens on both IPv4 and IPv6 loopback. It may support source-level UI or regression work after Phase 0, but direct-file operation remains the primary distribution architecture.
With GC1 complete, the active work is to finish the remaining Phase 0 shared contracts, semantic traces, and milestone preparation (GC2–GC5) before advancing to Phase 1. A GC1 pass alone does not mark all of Phase 0 complete. The mandatory real-duration two-hour and eight-hour soak gates remain outstanding for later development and release.