Add a Fireworks-owned thinking policy for Kimi models so K2.5/K2.6 only expose `off`, keep the bundled provider-policy artifact aligned, and keep request payloads on Fireworks-accepted `thinking: disabled` while stripping rejected `reasoning*` fields.
Refs #74289.
type:"message" entries with a null, missing, or blank role cannot be
replayed to any provider — every router branches on message.role. The
auto-repair pass was passing them through unchanged, relocating the
corruption from the original file into the post-repair file (#77228
reported 935+ null-role entries surviving the pass).
Add isStructurallyInvalidMessageEntry ahead of the existing rewrite
predicates. Invalid message envelopes are counted as droppedLines and
skipped; non-message envelope types (summary, custom, …) are unaffected.
The .bak-* backup preserves the original bytes for postmortem before any
entries are dropped.
Tests:
- pnpm test src/agents/session-file-repair.test.ts
- pnpm exec oxfmt --check --threads=1 CHANGELOG.md src/agents/session-file-repair.ts src/agents/session-file-repair.test.ts
- pnpm check:changed
Refs #77228
normalizeAssistantReplayContent rewrites empty assistant error turns into
a STREAM_ERROR_FALLBACK_TEXT sentinel to satisfy Bedrock Converse's
non-empty ContentBlock requirement for non-trailing turns. When that
sentinel is the trailing entry, prefill-strict providers reject the
request with "400 This model does not support assistant message prefill.
The conversation must end with a user message." and the session cannot
recover on its own.
Add a post-loop tail trim that drops trailing assistant turns whose
content is empty with stopReason "error" or zero-usage empty stop, or
carries only the sentinel text with the same synthetic provenance. A real
model reply whose content happens to equal the sentinel string is
preserved by requiring zero usage or stopReason "error" before dropping.
The trim catches both the in-memory rewrite shape and the sentinel
persisted to disk by session-file-repair.
Tests:
- pnpm test src/agents/pi-embedded-runner/replay-history.test.ts
- pnpm exec oxfmt --check --threads=1 CHANGELOG.md src/agents/pi-embedded-runner/replay-history.ts
src/agents/pi-embedded-runner/replay-history.test.ts
- pnpm check:changed
Refs #77228
