[leehack]

Summary

• Adds the test rows and doc fixes from the 0.19.5-cycle audit P3s on #1861; no runtime change. Part of #1918.
• MiniMax M3 forced-open fixture row for a</mm:think>x</mm:think><tool_call> + call (Parse a MiniMax M3 forced-open thought as llama.cpp does #1910 audit), recorded from llama.cpp cd959bae9.
• Ling 3 fixture rows string-number, string-quoted, string-json-object and two-calls-then-bad (Parse Ling 3.0 (Bailing V3) replies as llama.cpp does (#1857) #1915 audit), recorded from cd959bae9 for every template entry; the last covers the stream's singleToolCall partial parse.
• Keep LiteRT-LM performance counters after a cancelled generation #1916 auditor tests for the LiteRT-LM v1 cancel counters.
• Docs: Android ComputeDevice.auto note in the generation guide, support-matrix and README wording for Gemma 4 on Android and iOS GPU, and the matching consumer skill line (Gate native LiteRT-LM JSON Schema per qualified host and accelerator #1909 audit).

Production-readiness scope

• User-facing scope: Tests and docs only.
• Supported platforms/paths: Dart VM tests; docs.
• Unsupported or intentionally unavailable paths: N/A, no behavior change.
• Out of scope / follow-ups: Behavior fixes in #1919, #1920, #1921; test gaps on high-risk paths in #1922.

Completeness checklist

• Declared scope is fully implemented.
• N/A: no unsupported-path change.
• Docs, README and skill updated where relevant; no changelog entry (no user-visible behavior).
• Regression coverage: each new row/test fails against its audit mutant (below).
• N/A: no public capability change.
• No secrets involved.
• Follow-ups tracked on 0.19.x audit follow-ups (index) #1861.

PR type guidance

• Docs-only PR / test-only: no runtime behavior changes.

Test Plan

• dart run tool/prepare_workspace.dart
• dart format --output=none --set-exit-if-changed .
• dart analyze
• Targeted VM: ling3_tool_call_upstream_test, minimax_m3_forced_open_upstream_test, litert_lm_v1_runtime_client_test, test/unit/tooling/ (only the 6 windows_registry_qualification_test.dart cases fail locally: no pwsh)
• dart test -p chrome --exclude-tags local-only: N/A, VM-only tests and fixtures
• coverage-lib: N/A, no lib/ change
• ./tool/docs/build_site.sh

Matrix Evidence

Matrix row	Scope covered	Platform / model / backend	Result	Evidence / notes
root-vm	targeted suites above	Dart VM	PASS	local
root-chrome	N/A	N/A	N/A	no browser-compiled file changed
coverage-lib	N/A	N/A	N/A	no lib/ change
docs-site	doc edits	N/A	PASS	./tool/docs/build_site.sh --port 18971, clean tree
template-parity	N/A	N/A	N/A	no template code change; fixtures re-verified against the oracle

Mutants (all killed by the new rows): Ling singleToolCall dropped from the partial parse; Ling _onlyString false for type: string; MiniMax M3 lastIndexOf(endTag). The #1916 patch kills M1-M4, M6 and M8 per the audit; M5 and M7 survived there as well.

Review Notes

• Independent review status: N/A, test rows and docs only.
• CI status / head SHA: see below.

High-risk regression review

• Classification: standard
• Implementation task: N/A
• Independent blocking QA task: N/A
• Exact head / current base: N/A
• Production-branch deletion, bypass, or miswire proof: N/A
• Affected-family real-model/artifact evidence: N/A
• Explicit unavailable-family or other N/A evidence: N/A
• Known PR-caused P1 regressions: 0
• Unresolved review threads: 0

[github-actions]

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