From 75b4da0df4166f8f87f39f11e924349ef25749ba Mon Sep 17 00:00:00 2001 From: Labyricorn Date: Sat, 5 Sep 2026 12:09:37 -0700 Subject: [PATCH] docs(devlog): record Phase 0 completion --- .../contents.lr | 58 +++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 .labyricorn/devlog/phase-zero-complete-and-phase-one-ready/contents.lr diff --git a/.labyricorn/devlog/phase-zero-complete-and-phase-one-ready/contents.lr b/.labyricorn/devlog/phase-zero-complete-and-phase-one-ready/contents.lr new file mode 100644 index 0000000..e9abd90 --- /dev/null +++ b/.labyricorn/devlog/phase-zero-complete-and-phase-one-ready/contents.lr @@ -0,0 +1,58 @@ +_model: devlog-entry +--- +schema_version: 1 +--- +title: Completing Phase 0 and opening the path to the runtime skeleton +--- +date: 2026-09-05 +--- +author: Labyricorn +--- +summary: Phase 0 is complete: the remaining resolution, clock and reproducibility, and ownership and failure contracts now have deterministic executable evidence, while the implementation plan maps performance, library, build, and reference-exhibit verification through Phase 9. +--- +tags: Project Planning, Shared Contracts, Deterministic Testing, Phase 0 +--- +source_commit: 63895c4fe755ff8ea0bd4dd4b8ef3a067ac106cf +--- +body: + +Phase 0 has reached its intended stopping point. Direct-file feasibility and the shared document grammar were already verified through GC1 and GC2. The remaining work was to remove ambiguity from value resolution, logical time and random behavior, scenario ownership and failure handling, and the handoff into later implementation milestones. + +The [Phase 0 completion commit](https://git.labyricorn.com/Labyricorn/XZBT/commit/63895c4fe755ff8ea0bd4dd4b8ef3a067ac106cf) completes that work without starting the production runtime. + +## Closing the shared semantic contracts + +Format Specification 0.1 is now at Document Revision 0.3. Three previously open shared gates have exact rules and executable contract models: + +* **GC3 — Resolution semantics:** The specification fixes the supported target stages, same-tick topological evaluation, binding transformation and smoothing, override priority and activation order, transition easing, interruption, dynamic release destinations, safety clamps, and diagnostics for conflicts, cycles, unsupported targets, and invalid transitions. +* **GC4 — Time and reproducibility:** The runtime contract uses a fixed 60 Hz logical clock with bounded catch-up work, composable pause reasons, a bounded audio lookahead, and defined audio-unlock decisions. Seed normalization, domain-separated random streams, FNV-1a derivation, SplitMix32 expansion, and `xoshiro128**` output are locked by known vectors. +* **GC5 — Ownership and failure:** Ownership propagates through nested events, persistent state changes survive later failures, termination hook choice and allowed actions are explicit, cleanup is bounded, deferred starts are ordered and expire deterministically, and ordinary dispatch has a hard budget that cannot prevent mandatory cleanup. + +One specification inconsistency surfaced during this work. The initial GC2 schema used the planning-only binding fields `from`, `to`, and `transform`, while the authoritative PRD already defined `source`, `target`, `scale`, `offset`, and `clamp`. Because no production runtime or released exhibit depended on the draft names, Revision 0.3 reconciles the schema, validator, and fixtures to the PRD vocabulary and rejects the old spellings rather than preserving ambiguous aliases. The original GC2 test matrix continues to pass after the migration. + +## Evidence, not just prose + +The shared contracts are accompanied by small deterministic models and trace fixtures. They are contract oracles for future production modules, not implementations disguised as finished runtime behavior. + +The combined Phase 0 verification run covers the original probe regressions, the 12-case format conformance matrix, resolution traces, fixed-clock behavior at different render frequencies, stall and pause handling, PRNG known vectors and stream isolation, deterministic audio-reactive inputs, inherited ownership, failure injection, trigger rearming, deferred ordering, feedback limits, and repeated cleanup cycles. + +```text +node --test test/gc2-runner.test.mjs test/gc3-resolution.test.mjs test/gc4-time-random.test.mjs test/gc5-lifecycle.test.mjs prototypes/phase0/audio-probe.test.mjs + +27 tests passed, 0 failed +``` + +The earlier browser evidence remains important. It establishes direct-file import and persistence, full-browser restart restoration, offline behavior, user-unlocked audio, AudioContext suspend/resume, embedded AudioWorklet loading, storage-failure fallback, and directory-picker cancellation handling in the tested Chrome environment. The new scheduling model does not claim that the future Web Audio engine already implements synchronization or anti-click behavior; those checks remain assigned to audio integration. + +## Advancing to Phase 1 + +The new implementation plan maps Phases 1 through 9 to PRD sections, verification stops, MVP completion criteria, and the five reference exhibits. Phase 1 can now begin with the runtime shell, loader, diagnostics, seeded RNG, persistence foundation, activation lifecycle, and reproducible modular-source build. + +Later gates remain deliberately visible: + +* the first combined visual/audio benchmark follows the Phase 4 integration point; +* the two-hour development soak follows the Phase 6 scenario integration; +* library replacement, reconciliation, and activation-recovery tests belong to Phase 8; +* the eight-hour release soak, final direct/offline artifact audit, and all five reference exhibits complete in Phase 9. + +Phase 0 completion therefore means the feasibility evidence, shared contracts, deterministic traces, and implementation map are ready. It does not mean that the production runtime, audio and visual engines, reference suite, benchmark, or soak requirements have already passed. That boundary is now explicit, tested, and ready for the next phase.