Descriptor-phase errnos in readTextForDiff fold to before: null so a file deleted or made unreadable after the caller's preflight cannot fail the committed write; cancellation and non-errno faults still propagate. Drops the now-covered isFile v8 ignore, extends llm-replay with catalog capability parity (defaultMaxTokens/reasoningEfforts), and records the fs-write-overwrite-bounded keyless snapshot pinning the over-limit whole-file fallback through the real acp-agent composition.
support/ — development and test infrastructure
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These packages support repository development, tests, and examples rather than product APIs. Their compatibility follows the development need they serve.
| Package | Role |
|---|---|
acp-snapshot/ |
Provides the ACP snapshot-test toolkit |
agent-loop-testkit/ |
Mounts shared prerequisites for AgentLoop tests |
invariants/ |
Runs development-time runtime-contract assertions |
loader-smoke/ |
Launches Loader-composed applications for smoke tests |
llm-mock-server/ |
Provides a deterministic OpenAI-compatible fault server |
llm-replay/ |
Replays recorded model responses for keyless tests and demos |
A package moves out of support/ when it gains a product contract and product consumers.