* fix(chat): allow failed turns to be forked
Failed turns can end in Paseo-generated timeline items without provider
message IDs. Anchor forks to canonical timeline positions while retaining
legacy boundaries for compatibility.
Place the fork summary before the new prompt and delimit it as structured
chat history.
* fix(chat): tighten fork boundary handling
* Extract client SDK package
* Polish SDK client identity defaults
* Build client before dependent CI jobs
* Restore daemon client server export
* Extract protocol and client SDK packages
* Fix provider override schema validation
* Fix app test daemon client imports
* Simplify workspace build targets
* Fix CLI test server build bootstrap
* Run SDK package tests in CI
* Fix rebase package split drift
* Restore lockfile registry metadata
* Update SDK config test for prompt default
* Move terminal stream router test to client package
* Fix rebase drift for protocol imports
* Fix SDK agent capability fixture
* Restore legacy server client exports
* Fix server export compatibility test
* Advertise custom mode icon client capability
* Remove server daemon-client exports
* Format rebased mode control import
* Fix rebase drift for protocol imports
Files added by upstream PRs (#893, #1147, #1154) referenced the pre-split
shared/ paths that this branch moves into @getpaseo/protocol. Redirect
those imports to the protocol package so typecheck stays green after the
rebase.