44 lines
4.3 KiB
Markdown
44 lines
4.3 KiB
Markdown
# Phase 0 version 2 results and version 3 candidate fix
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**Result:** Cache restored between loads; tone heard; suspend/resume observed; Blob worklet loading failed\
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**Source:** User-supplied [version 2 JSON](2026-09-04-user-run-v2.json)\
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**Run started:** `2026-09-05T02:26:04.668Z` (September 4 in America/Los_Angeles)\
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**Gate:** GC1 remains incomplete; no advancement to Phase 1
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## Findings
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| Check | Evidence | Conclusion |
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| --- | --- | --- |
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| Direct-file load | `protocol: "file:"`, secure context, Chrome 152 | Observed in the user's browser |
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| Restore on a later load | `restored: true`, `saves: 0`, populated `restoredAtLoad` | Both exhibits, Blue selection, and saved default parameter/volume values restored without a write in this run |
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| Link to previous saved state | `savedAt: 2026-09-05T02:14:24.015Z` | Matches the preceding user-run save timestamp |
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| Full browser restart | No independent confirmation of process exit | Still unverified; a later page load alone is insufficient |
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| Distinctive edited settings | Values remain at defaults | Edited-value reconciliation/restoration is not demonstrated by this run |
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| Native tone | `toneHeard: true`, tone ended and nodes disconnected | User confirms audible output |
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| Suspend/resume | `suspendObserved: "suspended"`, `resumeObserved: "running"` | AudioContext state changes observed |
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| Worklet | `addModule` rejected a `blob:null/...` URL while the context remained running | Failure isolated to module loading; node construction was not reached |
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| CSP | Empty `securityPolicyViolations` list | No page violation event captured; this does not prove absence of every browser restriction |
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| Offline/directory/fault injection | Online flag true; directory untested; injection false | These checks remain pending |
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This run resolves the uncertainty about native audio output and demonstrates actual cache restoration between loads. It does not establish that all of GC1 passed.
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## Candidate module-loading correction
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The combination of a local `file:` page, an opaque `blob:null` URL, and an `addModule` failure is consistent with a local Blob-module loading limitation. This remains a diagnosis to verify, not a proven universal restriction in Chrome 152.
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The [Recorder project's own implementation](https://raw.githubusercontent.com/xiangyuecn/Recorder/master/src/recorder-core.js) constructs a `data:text/javascript;base64,...` worklet module URL, with an explicit source comment explaining that some browsers reject local object URLs. This primary implementation informed the candidate fix; no Recorder dependency or code was imported into XZBT.
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Probe version 3 encodes the same fixed ASCII processor source into a `data:` URL and passes it to the same `audioWorklet.addModule()` API. It replaces `blob:` with `data:` in the page's `script-src` allowlist. It does not disable CSP, add network sources, enable eval, change browser flags, or accept exhibit-authored executable modules. `connect-src 'none'` remains in effect. This changes application packaging, not the agent browser tool's URL policy; no blocked browser automation was attempted.
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The probe's database and path remain unchanged. Attempt evidence now reports `moduleURLScheme: "data:"` and the fixed source size. Success would be reported as `loaded from engine-owned data URL and connected`; it must not be recorded until an actual user browser run reports it.
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**Version 3 artifact SHA-256:** `97D6909953F1F22E5BF0CA8AD653605D57A078AB3CCDEDFA509C5E9B0C1A4B2A`
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## Verification performed
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Three Node control-flow regression tests passed using `node --test prototypes/phase0/audio-probe.test.mjs`. These use stubbed APIs. They cover rejection isolation, diagnostics, the embedded processor source's syntax, data URL construction, and avoiding duplicate registration after simulated success. They do not verify real browser module loading or CSP enforcement.
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## Next evidence
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Reopen the same [probe file](../../../prototypes/phase0/XZBT-phase0-probe.html), verify `probeVersion: 3`, enable audio, and test the worklet module. Share the evidence and any additional browser console error if it still fails. Confirm separately whether Chrome was fully exited between the earlier user runs. Preserve the remaining offline, edited-settings, directory/fallback, and failure-injection checks in the [manual procedure](../../../prototypes/phase0/README.md).
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