- Replaced time-based sleeps and polling loops with event-driven promise resolvers and fake timers across agent and tool tests.
- Migrated test suites to share in-memory auth storage and fixtures using lifecycle hooks.
- Updated catalog model definitions, metadata, and configurations.
- Implemented in-house, zero-dependency utility modules in `pi-utils` covering DOM manipulation, markdown parsing, templating, browser automation helpers, and terminal buffers.
- Migrated packages across the repository to consume the new internal utilities and `omptype` schema validators instead of external dependencies.
- Removed multiple external runtime and development dependencies including Zod, Marked, LRU cache, Turndown, and Puppeteer browser packages.
A non-retriable provider error on the continuation turn after a failed
tool result ended the run, but #persistSessionMessageIfMissing dropped
the empty error turn as reload poison, so the session JSONL stopped at
the last tool result and the provider errorMessage was lost with no
durable record of why the run stopped. When retry, model fallback, and
compaction all decline the turn, the non-retry terminal error tail now
persists it via the same helper the retry-lifecycle dead-ends use; the
empty turn stays off the wire on reload via the transform-messages
empty-assistant filter, matching the existing retry-exhaustion path.
Fixes#6249
can1357