refactor: implement component-based architecture for enhanced maintainability

- Reorganize directory structure into core/, features/, and themes/
- Colocate application Nix logic, configs, scripts, and theme overrides
- Implement 'Inversion of Control' for theming: apps now pull theme-specific layouts
- Update flake.nix and shared library paths to match the new structure
- Document the new Feature-Centric architecture in README.md

themes/palettes/ethereal/apps/btop.theme

@@ -0,0 +1,70 @@
+# Main background, empty for terminal default, need to be empty if you want transparent background
+theme[main_bg]="#060B1E"
+
+# Main text color
+theme[main_fg]="#ffcead"
+
+# Title color for boxes
+theme[title]="#c89dc1"
+
+# Highlight color for keyboard shortcuts
+theme[hi_fg]="#a3bfd1"
+
+# Background color of selected item in processes box
+theme[selected_bg]="#6d7db6"
+
+# Foreground color of selected item in processes box
+theme[selected_fg]="#ffcead"
+
+# Color of inactive/disabled text
+theme[inactive_fg]="#6d7db6"
+
+# Misc colors for processes box including mini cpu graphs, details memory graph and details status text
+theme[proc_misc]="#c89dc1"
+
+# Box outline and divider line color
+theme[cpu_box]="#92a593"
+theme[mem_box]="#92a593"
+theme[net_box]="#92a593"
+theme[proc_box]="#92a593"
+theme[div_line]="#6d7db6"
+
+# Gradient for all meters and graphs
+theme[temp_start]="#a3bfd1"
+theme[temp_mid]="#7d82d9"
+theme[temp_end]="#92a593"
+
+
+theme[cpu_start]="#a3bfd1"
+theme[cpu_mid]="#7d82d9"
+theme[cpu_end]="#92a593"
+
+
+theme[free_start]="#7d82d9"
+theme[free_mid]="#E9BB4F"
+theme[free_end]="#E9BB4F"
+
+
+theme[cached_start]="#E9BB4F"
+theme[cached_mid]="#E9BB4F"
+theme[cached_end]="#E9BB4F"
+
+
+theme[available_start]="#a3bfd1"
+theme[available_mid]="#a3bfd1"
+theme[available_end]="#a3bfd1"
+
+
+theme[used_start]="#92a593"
+theme[used_mid]="#92a593"
+theme[used_end]="#92a593"
+
+
+theme[download_start]="#E9BB4F"
+theme[download_mid]="#a3bfd1"
+theme[download_end]="#7d82d9"
+
+
+theme[upload_start]="#E9BB4F"
+theme[upload_mid]="#a3bfd1"
+theme[upload_end]="#7d82d9"

themes/palettes/ethereal/apps/neovim.lua

@@ -0,0 +1,12 @@
+return {
+  {
+    "bjarneo/ethereal.nvim",
+    priority = 1000,
+  },
+  {
+    "LazyVim/LazyVim",
+    opts = {
+      colorscheme = "ethereal",
+    },
+  },
+}

themes/palettes/ethereal/apps/vscode.json

@@ -0,0 +1,4 @@
+{
+  "name": "Ethereal",
+  "extension": "Bjarne.ethereal-nomarchy"
+}