mason + lsp config working

lua/keymaps.lua

@@ -1,8 +1,42 @@
--- Non-plugin keymaps (kept intentionally minimal for bootstrap)
+-- Non-plugin and global helper keymaps
 local map = vim.keymap.set
 local opts = { noremap = true, silent = true }
 
--- Add non-plugin keymaps during Phase 3 when porting settings
+-- LSP-aware helpers with graceful fallback to built-ins
+local function lsp_has(bufnr, capability)
+  for _, client in pairs(vim.lsp.get_clients({ bufnr = bufnr })) do
+    if client.server_capabilities[capability] then return true end
+  end
+  return false
+end
+
+local function lsp_or_builtin(bufnr, capability, lsp_fn, builtin_normal)
+  if lsp_has(bufnr, capability) then
+    lsp_fn()
+  else
+    vim.cmd("normal! " .. builtin_normal)
+  end
+end
+
+-- Global LSP-keymaps with fallback so they work reliably
+map('n', 'gd', function()
+  lsp_or_builtin(0, 'definitionProvider', vim.lsp.buf.definition, 'gd')
+end, { desc = 'Go to definition (LSP or built-in)' })
+
+map('n', 'gr', function()
+  if lsp_has(0, 'referencesProvider') then vim.lsp.buf.references() end
+end, { desc = 'References (LSP)', silent = true })
+
+map('n', 'gD', function()
+  lsp_or_builtin(0, 'declarationProvider', vim.lsp.buf.declaration, 'gD')
+end, { desc = 'Go to declaration (LSP or built-in)' })
+
+map('n', 'gI', function()
+  if lsp_has(0, 'implementationProvider') then vim.lsp.buf.implementation() end
+end, { desc = 'Go to implementation (LSP)', silent = true })
+
+map('n', 'K', function()
+  if lsp_has(0, 'hoverProvider') then vim.lsp.buf.hover() end
+end, { desc = 'Hover (LSP)', silent = true })
 
 return {}
-