feat(codex-bridge): handoff instruction for Codex Desktop only (off by default)

User decision: the "larger work goes to AITURK" instruction lives only in what Codex IDE sees; the CLI must
not know it exists. The bridge adds it in flight by the originator header (measured: Codex Desktop, codex-tui,
codex_exec) and only when a send command is configured.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/desktop/assets/codex-bridge/README.md

@@ -45,6 +45,13 @@ for the chat, i.e. until the user picks another one in the list.
 
 Setting: `sesle_model` (default on).
 
+### Work handoff instruction (prepared, off by default)
+
+`is_hatti.py`: when `aiturk_hat` is enabled and has a `komut`, the bridge prepends a developer message ("small work
+yourself; larger work goes to AITURK via this command") to requests whose `originator` header is `Codex Desktop`.
+The Codex CLI (`codex-tui`, `codex_exec`) never receives it and nothing is written to any file it reads. Each new
+`originator` value is logged once (`istemci goruldu`).
+
 ## Version 7 (IDE beta.26): external models behave like subscription models
 
 Measured on 10 Oct 2026 with the unmodified Codex binary (`codex exec`, same conversation, model switched per turn).