docs: slim README to overview+docs pointer; expand offline manual

- README now contains only Overview, Documentation, Installation,
  Personalization, Attribution, and License; all detailed reference
  content has been removed since it is covered in the wiki
- Add Documentation section above Installation pointing to docs/wiki/
- docs/fish-config.md: add §4.11 Shell Aliases (navigation dots, color
  overrides, safety wrappers, archives, system logs)
- docs/fish-config.md: add Prompt and Theme subsection to §7 with
  Starship OSC 133 marker detail and FZF Catppuccin color values
- Regenerate docs/wiki/ with all new content

docs/wiki/index.md

@@ -13,13 +13,31 @@ A production-grade Fish shell configuration targeting Fish 4.x. It provides:
 
 The configuration is split across:
 
-    config.fish          Main entry point; sets env vars and PATH
-    conf.d/              Auto-sourced fragments: keybindings, abbreviations,
-                         theme, starship, zoxide, wakatime
-    functions/           One function per file, autoloaded by Fish
-    completions/         Tab completion scripts
-    integrations/        FZF Catppuccin theme and bindings
-    docs/                This offline documentation and compiled man page
+    config.fish               Main entry point; sets env vars and PATH
+    conf.d/
+      abbr.fish               All abbreviations
+      cheat.fish              cheat.sh completions
+      done.fish               Desktop notifications for long commands
+      first_run.fish          One-time init: Fisher bootstrap, theme, welcome
+      key_bindings.fish       Custom key bindings and Vi mode
+      paru-wrapper.fish       Auto-generates ~/.local/bin/paru logging wrapper
+      starship.fish           fish_prompt with OSC 133 shell-integration markers
+      tailscale.fish          Tailscale CLI tab completions
+      theme.fish              Catppuccin syntax highlight colors
+      tricks.fish             PATH, bang-bang helpers, bat man pages, aliases
+      wakatime.fish           WakaTime shell hook
+      yay-wrapper.fish        Auto-generates ~/.local/bin/yay logging wrapper
+      zoxide.fish             Zoxide z/zi integration; overrides cd
+    functions/                Custom functions, one per file, autoloaded
+    completions/              Tab completion scripts
+    integrations/
+      fzf.fish                FZF Catppuccin theme and key binding config
+    docs/                     Offline documentation and compiled man page
+      fish-config.md          Primary source manual (terminal-readable)
+      fish-config.1           Compiled man page (auto-generated by CI)
+      fish-config.index       Section index for help config navigation
+      html/                   Chunked HTML docs (auto-generated by CI)
+      wiki/                   Markdown wiki (auto-generated by CI)
 
 ---