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/noice.lua

@@ -0,0 +1,61 @@
+return {
+  "folke/noice.nvim",
+  event = "VeryLazy",
+  opts = {
+    -- add any options here
+  },
+  dependencies = {
+    -- if you lazy-load any plugin below, make sure to add proper `module="..."` entries
+    "MunifTanjim/nui.nvim",
+    -- OPTIONAL:
+    --   `nvim-notify` is only needed, if you want to use the notification view.
+    --   If not available, we use `mini` as the fallback
+    -- "rcarriga/nvim-notify",
+  },
+  config = function()
+    require("noice").setup({
+      cmdline = { enabled = true },
+      messages = { enabled = false },
+
+      lsp = {
+        -- override markdown rendering so that **cmp** and other plugins use **Treesitter**
+        override = {
+          ["vim.lsp.util.convert_input_to_markdown_lines"] = true,
+          ["vim.lsp.util.stylize_markdown"] = true,
+          ["cmp.entry.get_documentation"] = true,
+        },
+      },
+
+      views = {
+        cmdline_popup = {
+          position = {
+            row = "50%",
+            col = "50%",
+          },
+          size = {
+            width = 60,
+            height = "auto",
+          },
+        },
+        popupmenu = {
+          relative = "editor",
+          position = {
+            row = "61%",
+            col = "50%",
+          },
+          size = {
+            width = 60,
+            height = 10,
+          },
+          border = {
+            style = "rounded",
+            padding = { 0, 1 },
+          },
+          win_options = {
+            winhighlight = { Normal = "Normal", FloatBorder = "DiagnosticInfo" },
+          },
+        },
+      },
+    })
+  end,
+}