Fuse upstream JSON parsing, scalar packing, heap admission, and value assembly into synchronous token stages while retaining asynchronous file reads and existing capacity, cancellation, decoding, identity, and typed-error semantics. Declare stream-chain 4.2.6 directly.
Validation: 30 focused tests; check:fast, Knip and formatting; actual Flameox paired full-content oracles; real Linux evidence replay and Windows source-built package/Ghidra snapshot recovery; final-head CI 31/31 success.
Refs #1065, #1680.
Detach cancelled CDP sessions within the cleanup budget and retain event-finalization failures across retries. Honor Git filesystem encodings and exclude the promise-API probe from source-read failures.
Align existing integration regressions with retained process resources, filesystem-order-independent truncation, owned skill files, explicit native access facts and streamed JSON errors.
Validation: 132 acceptance tests passed (2 skipped), 83 affected boundary tests passed, Git/JSON/CLI boundary regressions passed, check:ci, docs:check and test discovery passed. Local verification used Node 24.18.0 on macOS; cross-platform CI remains pending.
Stream large CLI JSON files through a strict UTF-8 decoder and standard JSON parser using the same admitted regular-file handle. Preserve native parsing for small inputs, typed malformed-input/resource/access-denied errors, cancellation, and complete Evidence.
Verified with focused public CLI regressions, a 768 MB whitespace-padded valid request, and the Windows native decoder boundary. Individual strings and the assembled object graph remain subject to native runtime limits. All 27 final-head checks passed.
Refs #1331