Preserve the V3 system-prompt projection while adopting master’s per-agent frozen-message provenance and frontend performance gates. Keep benchmark workload admission and diagnostics fixes intact, and retain both migration and first-open/reopen lifecycle guarantees.
Generated V0 logs put user surfaces before the first step and cannot migrate to a protected V3 system head without changing chronology. Author native current headers, open the first step before the empty system head and user, keep title sequence references aligned, and supply embedded assistant streams.
Give the preset child a current identified user message. Preserve all paging, geometry, preset assertions and committed historical fixtures. Validated both generators red/green through the source seed reader, one full build, all preset/stats/trajectory browser tests (11), and scoped type-aware lint.
The long-chat builder emitted current V3 with user/message before system/message, so seed restoration rejected its protected head before browser assertions ran. Open the first step and append the system head before the user surface; keep Session-assigned title and tool-result references.
Add an independent seed-reader regression for current version, protected head order, title/tool references and closed turns. Observed protected-head failure before the fix; focused regression and full configured type-aware lint pass. Existing browser scroll assertions are unchanged; full built owner runs follow.
Preserve system/message persistence while adopting named persona prefix/suffix and environment facts after reusable instructions. Resolve the Web assertion against the logged system message, not retired header.system. Keep the existing protected V3 integration PR as the root publication path; no rules are bypassed.
Keep the synthetic compressed historical fixture step-first without changing frozen generation data or shared fixtures. Pin its migrated empty system head and unchanged source bytes. Exercise malformed native system rows before and after recoverable damage through scanner and read/write handles. Remove the unreachable duplicate unsupported-format catch after current-row admission; preserve its owned rejection and generic error path.
Validation: original zstd regression red; admission-bypass negative control 3/3 red; five focused specs 314/314 pass with format.ts 100% statements/branches/functions/lines. Final admission cleanup 15/15 pass. Full build-backed lint found one matcher typing error; exact identifier oracle replaces it and focused type-aware lint passes.
Retain the protected system-message fixture representation while incorporating the latest master PowerShell, browser timezone, asynchronous subscription and Python-runtime CI fixes through the V3 parent. Existing parent V3 successor refreshes are preserved without rewriting predecessor bytes beyond upstream master.
Local build and pwsh one-shot refresh passed. Persistent PowerShell completes the model turn but times out during process exit on both this layer and the updated V3 parent; an exact-master control is running before attributing that failure. PR-owned seed and coverage repairs are isolated follow-ups.
Tianyi Cui