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/ristretto/apps/btop.theme

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+#Btop monokai pro ristretto theme
+#Reconfigured from monokai theme
+
+# Main background, empty for terminal default, need to be empty if you want transparent background
+theme[main_bg]="#2c2421"
+
+# Main text color
+theme[main_fg]="#e6d9db"
+
+# Title color for boxes
+theme[title]="#e6d9db"
+
+# Highlight color for keyboard shortcuts
+theme[hi_fg]="#fd6883"
+
+# Background color of selected item in processes box
+theme[selected_bg]="#3d2f2a"
+
+# Foreground color of selected item in processes box
+theme[selected_fg]="#e6d9db"
+
+# Color of inactive/disabled text
+theme[inactive_fg]="#72696a"
+
+# Misc colors for processes box including mini cpu graphs, details memory graph and details status text
+theme[proc_misc]="#adda78"
+
+# Cpu box outline color
+theme[cpu_box]="#5b4a45"
+
+# Memory/disks box outline color
+theme[mem_box]="#5b4a45"
+
+# Net up/down box outline color
+theme[net_box]="#5b4a45"
+
+# Processes box outline color
+theme[proc_box]="#5b4a45"
+
+# Box divider line and small boxes line color
+theme[div_line]="#72696a"
+
+# Temperature graph colors
+theme[temp_start]="#a8a9eb"
+theme[temp_mid]="#f38d70"
+theme[temp_end]="#fd6a85"
+
+# CPU graph colors
+theme[cpu_start]="#adda78"
+theme[cpu_mid]="#f9cc6c"
+theme[cpu_end]="#fd6883"
+
+# Mem/Disk free meter
+theme[free_start]="#5b4a45"
+theme[free_mid]="#adda78"
+theme[free_end]="#c5e2a3"
+
+# Mem/Disk cached meter
+theme[cached_start]="#5b4a45"
+theme[cached_mid]="#85dacc"
+theme[cached_end]="#b3e8dd"
+
+# Mem/Disk available meter
+theme[available_start]="#5b4a45"
+theme[available_mid]="#f9cc6c"
+theme[available_end]="#fce2a3"
+
+# Mem/Disk used meter
+theme[used_start]="#5b4a45"
+theme[used_mid]="#fd6a85"
+theme[used_end]="#feb5c7"
+
+# Download graph colors
+theme[download_start]="#3d2f2a"
+theme[download_mid]="#a8a9eb"
+theme[download_end]="#c5c6f0"
+
+# Upload graph colors
+theme[upload_start]="#3d2f2a"
+theme[upload_mid]="#fd6a85"
+theme[upload_end]="#feb5c7"
+

themes/palettes/ristretto/apps/neovim.lua

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+return {
+  {
+    "gthelding/monokai-pro.nvim",
+    config = function()
+      require("monokai-pro").setup({
+        filter = "ristretto",
+        override = function()
+          return {
+            NonText = { fg = "#948a8b" },
+            MiniIconsGrey = { fg = "#948a8b" },
+            MiniIconsRed = { fg = "#fd6883" },
+            MiniIconsBlue = { fg = "#85dacc" },
+            MiniIconsGreen = { fg = "#adda78" },
+            MiniIconsYellow = { fg = "#f9cc6c" },
+            MiniIconsOrange = { fg = "#f38d70" },
+            MiniIconsPurple = { fg = "#a8a9eb" },
+            MiniIconsAzure = { fg = "#a8a9eb" },
+            MiniIconsCyan = { fg = "#85dacc" }, -- same value as MiniIconsBlue for consistency
+          }
+        end,
+      })
+      vim.cmd([[colorscheme monokai-pro]])
+    end,
+  },
+  {
+    "LazyVim/LazyVim",
+    opts = {
+      colorscheme = "monokai-pro",
+    },
+  },
+}

themes/palettes/ristretto/apps/vscode.json

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+{
+  "name": "Monokai Pro (Filter Ristretto)",
+  "extension": "monokai.theme-monokai-pro-vscode"
+}

themes/palettes/ristretto/colors.toml

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+accent = "#f38d70"
+cursor = "#c3b7b8"
+foreground = "#e6d9db"
+background = "#2c2525"
+selection_foreground = "#e6d9db"
+selection_background = "#403e41"
+
+color0 = "#72696a"
+color1 = "#fd6883"
+color2 = "#adda78"
+color3 = "#f9cc6c"
+color4 = "#f38d70"
+color5 = "#a8a9eb"
+color6 = "#85dacc"
+color7 = "#e6d9db"
+color8 = "#948a8b"
+color9 = "#ff8297"
+color10 = "#c8e292"
+color11 = "#fcd675"
+color12 = "#f8a788"
+color13 = "#bebffd"
+color14 = "#9bf1e1"
+color15 = "#f1e5e7"

themes/palettes/ristretto/icons.theme

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+Yaru-yellow