feat(theme): token semantik Catppuccin (Mocha/Latte/terminal) + mode auto via tea.BackgroundColorMsg + tombol T

internal/i18n/locales/id.yaml

@@ -16,6 +16,13 @@ section:
 host:
   local: "lokal"
 
+theme:
+  auto: "Otomatis"
+  dark: "Gelap"
+  light: "Terang"
+  terminal: "Terminal"
+  switchHint: "Berlaku langsung — tanpa restart."
+
 field:
   id: "ID"
   image: "Image"
@@ -51,8 +58,8 @@ hint:
   noContainers: "Belum ada kontainer — jalankan sesuatu dengan Docker, lalu tekan r."
   miniNoContainers: "belum ada kontainer — tekan 1"
   tabsComing: "Tab detail (Log · Statistik · Konfigurasi) menyusul di Phase 2."
-  footerHome: "[1/enter] kontainer · [t] toast · [a] reduced-motion · [q] keluar"
-  footerContainers: "[j/k] pilih · [r] muat ulang · [0/esc] beranda · [q] keluar"
+  footerHome: "[1/enter] kontainer · [t] toast · [T] tema · [a] reduced-motion · [q] keluar"
+  footerContainers: "[j/k] pilih · [r] muat ulang · [0/esc] beranda · [T] tema · [q] keluar"
 
 footer:
   status: "%s   animasi %s fps · audio: %s"
@@ -62,6 +69,7 @@ toast:
   demoBody: "Stack 'web-app' tersimpan di ~/.tia/stacks/web-app/"
   dockerError: "✖ [ GAGAL ] Docker"
   configError: "⚠ [ PERINGATAN ] Config bermasalah — memakai default"
+  themeMode: "Mode tema: %s"
 
 activity:
   coming: "Listener Docker events menyusul (Phase 2)."