Add installer menu structure

README.md

@@ -71,6 +71,34 @@ bash dotfiles/install/install-macos-user.sh
 source ~/.bashrc
 ```
 
+<details>
+<summary><strong>Installer menu (structure)</strong></summary>
+
+```text
+Install options
+├─ 1) PS1 only
+├─ 2) Banner only
+└─ 3) Both (PS1 + banner)
+   └─ PS1 mode
+      ├─ 1) Single season (static)
+      │  ├─ Pick season (Winter/Spring/Summer/Autumn)
+      │  └─ Layout order (day-time-user / user-time / time-user / day-time)
+      ├─ 2) Dynamic season (auto)
+      │  └─ Layout order (day-time-user / user-time / time-user / day-time)
+      ├─ 3) Contest pack (static)
+      │  ├─ Layout order
+      │  └─ Style preset (Aurora/Neon/Forge/Circuit/Mono/Git/Hawolex/HawolexV2)
+      ├─ 4) Holidays pack (static)
+      │  ├─ Pick holiday (Christmas/Easter/Halloween/Valentine/Thanksgiving/NewYear)
+      │  └─ Layout order
+      └─ 5) Custom pack (static)
+         └─ Style (Radar/Synthwave/Noir/Topo/Glitch/ArcticFire/AcidLime)
+
+Final prompt:
+└─ Enable git capsule for all themes? [y/N]
+```
+</details>
+
 <details>
 <summary><strong>Installer choices</strong></summary>