refactor: polish lsp.lua and mason-extras.lua

- Restore pyright inline comments explaining Ruff delegation
- Add header comment documenting mason-lspconfig/vim.lsp.config coupling
- Unwrap lsp.lua outer spec table (consistency with blink-cmp.lua, conform.lua)
- pcall mason-registry.get_package (defensive against unknown package name)
- Split inline autocmd opts across lines (style)

lua/custom/plugins/lsp.lua

@@ -1,16 +1,24 @@
+-- Pyright settings merge via vim.lsp.config deep-merge; mason-lspconfig's
+-- automatic_enable fires vim.lsp.enable() for each ensure_installed server.
 vim.lsp.config('pyright', {
   settings = {
-    pyright = { disableOrganizeImports = true },
-    python = { analysis = { ignore = { '*' } } },
+    pyright = {
+      -- Using Ruff's import organizer
+      disableOrganizeImports = true,
+    },
+    python = {
+      analysis = {
+        -- Ignore all files for analysis to exclusively use Ruff for linting
+        ignore = { '*' },
+      },
+    },
   },
 })
 
 return {
-  {
-    'mason-org/mason-lspconfig.nvim',
-    opts = {
-      ensure_installed = { 'clangd', 'gopls', 'pyright', 'ts_ls', 'ruff' },
-      automatic_enable = true,
-    },
+  'mason-org/mason-lspconfig.nvim',
+  opts = {
+    ensure_installed = { 'clangd', 'gopls', 'pyright', 'ts_ls', 'ruff' },
+    automatic_enable = true,
   },
 }

lua/custom/plugins/mason-extras.lua

@@ -1,10 +1,11 @@
 vim.api.nvim_create_autocmd('User', {
-  pattern = 'VeryLazy', once = true,
+  pattern = 'VeryLazy',
+  once = true,
   callback = function()
     local mr = require 'mason-registry'
     mr.refresh(function()
-      local p = mr.get_package 'codelldb'
-      if not p:is_installed() then p:install() end
+      local ok, p = pcall(mr.get_package, 'codelldb')
+      if ok and not p:is_installed() then p:install() end
     end)
   end,
 })