chore: remove local/unused plugins and refactor core configs

- Remove locally-developed or rarely-used plugin packages (codetyper, curls, edgy, flash) to reduce maintenance surface, external deps, and startup cost; these were local/optional and caused complexity.
- Clean up stale/keymap docs and small duplicate or experimental files (keymaps/README.md, sudoku keymaps).
- Apply targeted refactors to core modules for readability, robustness, and to align Java/DAP/Copilot integrations with local environment.
- Removed plugin modules:
  - lua/cargdev/plugins/codetyper.lua (deleted)
  - lua/cargdev/plugins/curls.lua (deleted)
  - lua/cargdev/plugins/edgy.lua (deleted)
  - lua/cargdev/plugins/flash.lua (deleted)
  - Added .codetyper to .gitignore
- Java / JDTLS:
  - ftplugin/java.lua: pin jdtls java executable to JDK 25, switch to mac_arm config, enable LSP formatter and declare multiple runtimes (JavaSE-17, JavaSE-25).
- Notifications & startup UX:
  - lua/cargdev/core/function/notification_manager.lua: large refactor — use local aliases (api, cmd, loop, opt), improved docs, dashboard-aware handling, nvim-notify fallback, safer tracking and cleanup of notifications.
- Utilities & monitors:
  - lua/cargdev/core/function/performance_monitor.lua: use local references, better notify usage and docs.
  - lua/cargdev/core/function/project_commands.lua: add docs, use local api/fn/notify, clearer RunProject/DebugProject commands.
- Terminal helper:
  - lua/cargdev/core/function/openTerminal.lua: add module docs and small refactor to use local cmd/api aliases and expose keymap.
- Keymaps & docs:
  - Removed stale keymaps README (lua/cargdev/core/keymaps/README.md).
  - Reworked many keymap files: docstrings, renamed/moved mappings to avoid conflicts, moved DAP mappings into dap plugin config, removed/disabled experimental mappings (see files under lua/cargdev/core/keymaps/*).
  - Adjusted quick keybindings and prefixes to reduce overlaps.
- Plugins & integrations:
  - lua/cargdev/plugins/formatting.lua: disabled google-java-format fallback for java (prefer JDTLS).
  - lua/cargdev/plugins/dap.lua: added additional DAP configs (Bun launch, attach helper), moved/registered dap keymaps here.
  - lua/cargdev/plugins/copilot.lua: reorganized Copilot/Copilot-cmp/CopilotChat config and added copilot source to nvim-cmp.
  - lua/cargdev/plugins/nvim-cmp.lua: added copilot source and small formatting tweak.

lua/cargdev/core/keymaps/dap.lua

@@ -1,35 +1,6 @@
--- DAP (Debug Adapter Protocol) keymaps
-
-local ok_dap, dap = pcall(require, "dap")
-local ok_dapui, dapui = pcall(require, "dapui")
-local fn = vim.fn
-local keymap = vim.keymap.set
-
-if ok_dap and ok_dapui then
-  keymap("n", "<leader>dcr", dap.continue, { desc = "▶ Start Debugging" })
-  keymap("n", "<leader>do", dap.step_over, { desc = "⏭ Step Over" })
-  keymap("n", "<leader>di", dap.step_into, { desc = "⤵ Step Into" })
-  keymap("n", "<leader>dot", dap.step_out, { desc = "⤴ Step Out" })
-  keymap("n", "<leader>db", dap.toggle_breakpoint, { desc = "🔴 Toggle Breakpoint" })
-  keymap("n", "<leader>dB", function()
-    dap.set_breakpoint(fn.input("Breakpoint condition: "))
-  end, { desc = "⚠ Conditional Breakpoint" })
-  keymap("n", "<leader>dr", dap.repl.open, { desc = "💬 Open REPL" })
-  keymap("n", "<leader>dl", dap.run_last, { desc = "🔁 Run Last Debug" })
-  keymap("n", "<leader>du", dapui.toggle, { desc = "🧩 Toggle DAP UI" })
-  keymap("n", "<leader>dq", dap.terminate, { desc = "⛔ Stop Debugging" })
-
-  -- 🧼 Reset UI
-  keymap("n", "<leader>drt", function()
-    dap.terminate()
-    dapui.close()
-    vim.defer_fn(function()
-      dapui.open()
-    end, 200)
-  end, { desc = "🧼 Reset DAP UI Layout" })
-
-  -- 🔭 Snacks Integration (replacing Telescope)
-keymap("n", "<leader>dcf", "<cmd>lua require('snacks.picker').dap_configurations()<cr>", { desc = "🔭 DAP Configs" })
-keymap("n", "<leader>dcb", "<cmd>lua require('snacks.picker').dap_list_breakpoints()<cr>", { desc = "🧷 List Breakpoints" })
-keymap("n", "<leader>dco", "<cmd>lua require('snacks.picker').dap_commands()<cr>", { desc = "⚙️ DAP Commands" })
-end
+--- DAP (Debug Adapter Protocol) keymaps.
+--- All DAP keymaps are registered in `plugins/dap.lua` inside the plugin's
+--- config function to ensure nvim-dap and nvim-dap-ui are fully loaded
+--- before any keybindings reference them. This file is intentionally empty.
+--- @module keymaps.dap
+--- @see plugins.dap