Model-less appliance

The product is a PowerShell 7 speech application on an unsupported Android target. PowerShell owns the authored model, lowering, control, and runtime logic; NativeActivity/CoreCLR/System.Management.Automation are the host substrate. This document describes that host boundary, not a completed synthesizer. Live direct-path Kokoro speech is not yet implemented. ROADMAP.md is the current product gate.

Build graph

setup-kokoro.ps1 is this repository's independent, unofficial fork of the Pwsh build graph. It is not an official Pwsh build and does not track upstream changes automatically. The fork emits and checks the Android manifest, managed host, XABA assembly store, native ELF libraries, APK archive and v2 signature from one PowerShell program. Its package provenance is isolated in lib/pwsh-build-manifest.json; Kokoro source and historical oracle provenance remain in lib/manifest.json.

Pwsh does not perform Kokoro model lowering or speech. Those belong to this repository's separately built model artifact and direct backend.

The product identity is dev.mansfieldplumbing.kokorohexagon. The admitted host uses the managed namespace Dev.MansfieldPlumbing.Kokoro and is NativeActivity/CoreCLR only. Xamarin, Mono, DEX, Android managed bindings and the recovery activity are not part of the intended release payload.

With -KeepIntermediates, selection also saves every chosen managed assembly under the external build directory and writes assemblies.json with byte counts, SHA-256 values and package provenance. The APK still consumes the mapped XABA store; the archive exists for diffing, reuse, trimming and release artifacts.

Resident runtime boundary

The base APK has proved NativeActivity/CoreCLR startup only. A product runspace must still be wired to a verified model DLL, bounded request and PCM contracts, direct DSP execution, and AAudio. The parsed two-node decoder description currently contributes graph identity to the host assembly; it is not executable Kokoro synthesis. Historical provider benchmarks are not an implementation contract for this product.

Model boundary

The intended runtime consumes a verified managed model DLL derived from the pinned upstream Kokoro-82M checkpoint; it does not read that checkpoint. Historical QNN contexts are reference artifacts, not runtime derivatives in the product path. The current DLL experiments contain phoneme admission or weights separately and are not a complete model. Quantized variants retain their own precision and release identity.

An optional language or perception model sits in front of this contract. It may produce text and speech-planning hints, but it does not own phonemization, audio playback or the measured Kokoro synthesis path.

Evidence boundary

The Windows provider gate is a historical baseline. The build graph proves only persistence of the current incomplete graph identity into the generated entry assembly. The signed base APK has separately passed size and launch checks on two phones. None of these proves model loading, direct DSP transport, speech quality, or speech time-to-first-audio.