* docs(agents): ban semicolons and colons in human-facing text
Tighten the writing rule so ";" and ":" are only allowed where the sentence would be nonsensical without them, rewrite the existing semicolons in AGENTS.md to follow it, and note that docs (litellm-docs) keep their trailing "."
* docs(agents): rewrite semicolons in nested AGENTS.md files
* docs(agents): hand-maintain the dashboard Next.js warning and sync e2e CONTRIBUTING lines
* docs(agents): point at the PR template path that exists
* docs(agents): restore the generated Next.js block in the dashboard AGENTS.md
Move the generic async coroutine out of the host crate into litellm-coroutine,
with its requirements documented in the crate's AGENTS.md. RouteMachine becomes
CallMachine on top of it, host protocol ops move to host/src/protocol.rs, and
the messages, OCR, host-python, python-bridge and legacy callbacks crates adopt
the new types. Adds error definition rules to litellm-rust/AGENTS.md.
Co-authored-by: Yujong Lee <yujong@berri.ai>
