Restructure modules/shared and update all imports

- Delete 2024-12-rework/ folder
- Rename modules/hosts/common to modules/shared, then split into:
  - modules/shared/home/general
  - modules/shared/home/linux
  - modules/shared/nixos
- Update all import paths throughout the codebase
- Update lib/*.nix to use new paths
- Fix hardcoded /Users/${username} to use config.home.homeDirectory
- Update README and examples/flake-structure.nix

modules/shared/files/nvim/lua/plugins/edgy.lua

@@ -0,0 +1,65 @@
+return {
+  "folke/edgy.nvim",
+  event = "VeryLazy",
+  opts = {
+    exit_when_last = false,
+    bottom = {
+      -- toggleterm / lazyterm at the bottom with a height of 40% of the screen
+      {
+        ft = "toggleterm",
+        size = { height = 0.2 },
+        -- exclude floating windows
+        filter = function(buf, win)
+          return vim.api.nvim_win_get_config(win).relative == ""
+        end,
+      },
+      "Trouble",
+      { ft = "qf", title = "QuickFix" },
+      {
+        ft = "help",
+        size = { height = 20 },
+        -- only show help buffers
+        filter = function(buf)
+          return vim.bo[buf].buftype == "help"
+        end,
+      },
+      { ft = "spectre_panel", size = { height = 0.4 } },
+    },
+    left = {
+      -- Neo-tree filesystem always takes half the screen height
+      {
+        title = "Neo-Tree",
+        ft = "neo-tree",
+        filter = function(buf)
+          return vim.b[buf].neo_tree_source == "filesystem"
+        end,
+        size = { height = 0.5 },
+      },
+      {
+        title = "Neo-Tree Git",
+        ft = "neo-tree",
+        filter = function(buf)
+          return vim.b[buf].neo_tree_source == "git_status"
+        end,
+        pinned = true,
+        open = "Neotree position=right git_status",
+      },
+      {
+        title = "Neo-Tree Buffers",
+        ft = "neo-tree",
+        filter = function(buf)
+          return vim.b[buf].neo_tree_source == "buffers"
+        end,
+        pinned = true,
+        open = "Neotree position=top buffers",
+      },
+      {
+        ft = "Outline",
+        pinned = true,
+        open = "SymbolsOutlineOpen",
+      },
+      -- any other neo-tree windows
+      "neo-tree",
+    },
+  },
+}