[xandreeddev]

What

• A concurrent run of an open turn is no longer told that another run's call is interrupted while that call is still running: a build leaves out an exchange of another run of the open turn until each of its calls has a result. The run that made the call, and every request after the turn ended, still answer a missing result with ToolInterrupted.
• A request shows its results in the order of its calls, whatever order concurrent calls returned in (the journal still records them as they return).
• Rendering memory is linear in the log's length. Several passes copied an accumulated list or map per entry or result, so a long session's every build was quadratic (about 10 s for 25,600 entries); it now takes about 0.1 s, with byte-identical output (checked against the previous renderer with a property test over generated logs).
• @xandreed/plugin-agent-loop: a reply cut short is recorded with its calls' ReplyCut answers in the same batch, and runLoop's tool_start/tool_end carry the call's own id instead of an execution id.
• @xandreed/plugin-models: a streamed chat completion whose body ended with neither a finish reason nor [DONE] finishes unknown, so the loop runs none of a dropped stream's calls; [DONE] or a whole completion without a reason still settles.
• Minted tool-call ids are call_<turn>_<ordinal>_<step>_<n> (call_<turn>_<ordinal>_p<n> for a planned batch): letters, digits and _ only, short enough for Anthropic's ^[a-zA-Z0-9_-]+$ pairing keys after a provider switch. An id-less provider result pairs with the id-less call of its own tool. Stored ids replay as stored.
• Migration: toolCallIdOf(run, step, n) drops the tool argument; custom StepLoops and memory strategies rerun their kits (new cut-record, in-flight-exchange, call-order checks, each with a careless self-test). No stored-shape change: STORED_FORMAT is unchanged. The sdk golden changes only in the minted planned id and the fingerprints that follow from it.

Checks

• bun run typecheck, foundry check: pass
• bun test: 3675 pass, 4 skip, 2 fail under full-suite load (the byte-store edge accepts its maximum…, the awaiting check of a careless kit loop); both files pass when rerun alone
• bun run foundry demo, build:packages, verify:packages, docs:generate (no diff), bun run --cwd packages/website check: pass