feat: restructure keymaps and fix Lua configuration

- Restructure keymaps into modular folder system
  - Create keymaps/ folder with organized files
  - Separate keymaps by category (general, personal, lsp, telescope, plugins)
  - Auto-loading system for better maintainability

- Fix Lua configuration issues
  - Add compatibility layer for deprecated APIs
  - Fix snacks.nvim configuration
  - Disable latex support in render-markdown
  - Improve LSP configuration

- Enhance function navigation
  - Restore and improve LSP keymaps
  - Add comprehensive Telescope integration
  - Fix conflicting keymaps

- Improve overall Neovim setup
  - Better options configuration
  - Enhanced plugin configurations
  - Cleaner code organization

lua/cargdev/core/keymaps/lsp.lua

@@ -0,0 +1,27 @@
+-- LSP and function navigation keymaps
+local keymap = vim.keymap
+
+-- =============================================================================
+-- LSP NAVIGATION (FUNCTION NAVIGATION)
+-- =============================================================================
+
+-- Primary LSP navigation
+keymap.set("n", "gd", "<cmd>Telescope lsp_definitions<cr>", { desc = "Go to definition" })
+keymap.set("n", "gi", "<cmd>Telescope lsp_implementations<cr>", { desc = "Go to implementation" })
+keymap.set("n", "gr", "<cmd>Telescope lsp_references<cr>", { desc = "Show references" })
+keymap.set("n", "gt", "<cmd>Telescope lsp_type_definitions<cr>", { desc = "Go to type definition" })
+
+-- Symbol search
+keymap.set("n", "<leader>ds", "<cmd>Telescope lsp_document_symbols<cr>", { desc = "Document symbols" })
+keymap.set("n", "<leader>ws", "<cmd>Telescope lsp_workspace_symbols<cr>", { desc = "Workspace symbols" })
+
+-- Code actions and documentation
+keymap.set("n", "<leader>ca", "<cmd>lua vim.lsp.buf.code_action()<cr>", { desc = "Code actions" })
+keymap.set("n", "<leader>rn", "<cmd>lua vim.lsp.buf.rename()<cr>", { desc = "Rename" })
+keymap.set("n", "K", "<cmd>lua vim.lsp.buf.hover()<cr>", { desc = "Hover documentation" })
+
+-- Diagnostics
+keymap.set("n", "<leader>D", "<cmd>Telescope diagnostics<cr>", { desc = "Show diagnostics" })
+keymap.set("n", "<leader>dd", "<cmd>lua vim.diagnostic.open_float()<cr>", { desc = "Line diagnostics" })
+keymap.set("n", "[d", "<cmd>lua vim.diagnostic.goto_prev()<cr>", { desc = "Previous diagnostic" })
+keymap.set("n", "]d", "<cmd>lua vim.diagnostic.goto_next()<cr>", { desc = "Next diagnostic" })