Keep Orca CLI first after shell startup (#25130)

* Restore the owning Orca CLI path after shell profiles

* Use a literal marker for the Bash lookup regression

* Preserve plain panes and initialize zsh after prompt hook replacement

* Preserve user line-editor dispatchers during deferred startup

* fix: retain CLI startup when global Zsh replaces prompt hooks

* test: replay global Zsh hook replacement after host startup

* test: isolate controlled Zsh widgets from distro keyboard setup

* fix(shell): preserve user hooks during deferred zsh initialization

* Keep completed Zsh startup hooks retired when the wrapper is sourced again

---------

Co-authored-by: Codex <codex@openai.com>
Co-authored-by: Orca maintenance <orca-maintenance@users.noreply.github.com>
Co-authored-by: Orca campaign <orca-campaign@local.invalid>

src/shared/orca-cli-shell-path.ts

@@ -0,0 +1,6 @@
+export const ORCA_CLI_POSIX_PATH_RESTORE = `if [ -n "\${ORCA_CLI_BIN_DIR:-}" ]; then
+  case "\${PATH:-}" in
+    "$ORCA_CLI_BIN_DIR"|"$ORCA_CLI_BIN_DIR":*) ;;
+    *) export PATH="$ORCA_CLI_BIN_DIR\${PATH:+:$PATH}" ;;
+  esac
+fi`