* fix(app): preserve composer mode preferences
Treat undefined provider preference updates as no-ops, and keep saved mode selections instead of silently defaulting them when provider metadata is incomplete or does not list the saved mode.
* fix(app): document mode preference preservation
* 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.
