Keep failed JSON read handles in the existing server resource scope and fail admission until cleanup succeeds. Thread cancellation through every process CLI input read and replace timer-driven cancellation checks with a shared first-read gate.
Classify authenticated standalone Evidence as wrong-kind input while preserving tampered-record integrity failures and actionable messages across ledger, CLI, and MCP consumers. Record unrelated CS_RESTRICT process neighbors as unverified without weakening related-process ownership checks. Update stale ADB fixtures for the actual shell protocol.
Validated focused CLI, MCP, filesystem, ownership, and error projection tests; static, docs, and duplication gates pass. The host-level CS_RESTRICT load reproduction was not run. Refs #2050, #2035, #2064.
Stream legacy snapshot cache rows independently, authenticate complete Evidence once, and restore exact immutable payloads without assembling duplicate full graphs. Preserve the existing file format, provenance, resource admission, cancellation and cache export isolation.
Verified through real Linux SDK MCP import of the original 83 MB Ghidra snapshot and full 41 MB bundle hash, actual Windows CLI/MCP PE recovery and the installed Windows large-file decoder boundary, focused tests and static checks.
Fixes#1680. Refs #1065.
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.
