Set up Rime Ice from the ISO's assets on China installs

plans/omarchycn.md

@@ -15,7 +15,7 @@ Progress source of truth for the `omarchycn` branches of `omarchy`, `omarchy-iso
 
 - [x] T0 Branches and this list
 - [x] T1 China package sources (PRD 1): region state, `omarchy-region` reader, `default/region/china/pacman.sed`, applied by `omarchy-refresh-pacman` and `install/post-install/pacman.sh`; tests
-- [ ] T2 Region choice in the installer (PRD 2): `omarchy_prompt_region` in `setup-form.sh`, ISO configurator screen, orchestrator passes `OMARCHY_REGION`, `install/config/region.sh` records it
+- [x] T2 Region choice in the installer (PRD 2): `omarchy_prompt_region` in `setup-form.sh`, ISO configurator screen, orchestrator passes `OMARCHY_REGION`, `install/config/region.sh` records it
 - [ ] T3 Input method (PRD 3): rime-ice-installer patch and PKGBUILD in omarchy-pkgs, IME packages in `omarchy-other.packages`, install-time package add, user step runs the installer from bundled assets, ISO build bundles assets and the package
 - [ ] T4 CJK fontconfig fix (PRD 4): rebuild PR 9693 on the current base
 - [ ] T5 AI (PRD 5): Dim and Kimi Code for every region (rebuild PR 9694), Claude Code third-party provider setup shown only in China