- Privatized the legacy `nextToolChoice` method to `#nextHardToolChoice` to ensure all tool-choice directives flow through the unified `nextToolChoiceDirective` entry point.
- Eliminated redundant dual entry points for fetching tool choices, which previously bypassed the soft pending-preview lifecycle.
- Updated test suites to consume `nextToolChoiceDirective` where appropriate to maintain consistency with internal agent-loop logic.
- Migrated all wire protocol, schema definitions, and tools validation from Zod to ArkType across multiple packages.
- Updated extension runtimes, custom tools loader, and TypeBox compatibility shim to expose and use ArkType instances.
- Added a comprehensive ArkType migration guide, validation parity tests, and helper utilities.
- Removed redundant PDF asset routing and parsing implementations from the read tool.
The first-message eager-task / eager-todo preludes are the oldest messages in a
session, so auto-compaction summarizes them away and the agent silently loses the
delegate-via-tasks / phased-todo guidance mid-work. Re-assert those reminders on
the auto-continuation turn that follows a compaction.
- Widen #createEagerTaskPrelude / #createEagerTodoPrelude to accept
`string | undefined`; `undefined` (post-compaction) skips only the
first-message and prompt-suffix gates, keeping the mode / agent-kind /
plan-mode / surviving-todo / active-tool gates intact.
- Reminder-only post-compaction: the todo nudge never attaches a forced `todo`
tool_choice on the resumed turn (forcing a tool after a mid-turn compaction
would override the agent's in-flight action).
- Add #buildPostCompactionEagerNudges() and prepend its output on the single
#scheduleAutoContinuePrompt continuation hook. All three call sites are
willRetry-safe, so overflow/incomplete retry recoveries never carry the nudge.
Op: extend
can1357