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/database.lua

@@ -1,53 +1,57 @@
--- Database keymaps
--- Using <leader>D prefix to avoid conflicts with DAP keymaps (<leader>d)
+--- Database keymaps (vim-dadbod, MongoDB, Redis).
+--- Uses `<leader>D` prefix to avoid conflicts with DAP keymaps (`<leader>d`).
+--- Covers DBUI toggle, connections, query execution/saving, buffer management,
+--- and quick-connect shortcuts for PostgreSQL Docker, MongoDB, and Redis.
+--- @module keymaps.database
+
 local keymap = vim.keymap
 
 -- =============================================================================
 -- DATABASE KEYMAPS (vim-dadbod)
 -- =============================================================================
 
--- Toggle database UI
+--- Toggle the vim-dadbod Database UI panel.
 keymap.set("n", "<leader>Du", "<cmd>DBUIToggle<CR>", { desc = "Toggle Database UI" })
 
--- Add a new database connection
+--- Add a new database connection interactively.
 keymap.set("n", "<leader>Da", "<cmd>DBUIAddConnection<CR>", { desc = "Add DB Connection" })
 
--- Find buffer (useful when you have multiple query buffers)
+--- Find a DBUI query buffer (useful when multiple query buffers are open).
 keymap.set("n", "<leader>Df", "<cmd>DBUIFindBuffer<CR>", { desc = "Find DB Buffer" })
 
--- Execute query (works in sql buffers)
+--- Execute a SQL query (full buffer in normal mode, selection in visual mode).
 keymap.set("n", "<leader>De", "<Plug>(DBUI_ExecuteQuery)", { desc = "Execute Query" })
 keymap.set("v", "<leader>De", "<Plug>(DBUI_ExecuteQuery)", { desc = "Execute Selected Query" })
 
--- Save query
+--- Save the current query buffer to disk.
 keymap.set("n", "<leader>Dw", "<Plug>(DBUI_SaveQuery)", { desc = "Save Query" })
 
--- Rename buffer
+--- Rename the current DBUI query buffer.
 keymap.set("n", "<leader>Dr", "<Plug>(DBUI_RenameBuf)", { desc = "Rename DB Buffer" })
 
 -- =============================================================================
 -- QUICK CONNECTIONS
 -- =============================================================================
 
--- PostgreSQL Docker (default: 5432 postgres postgres postgres)
+--- Connect to a PostgreSQL instance running in Docker (default port 5432).
 keymap.set("n", "<leader>Dp", "<cmd>DBPostgresDocker<CR>", { desc = "Connect PostgreSQL Docker" })
 
 -- =============================================================================
 -- MONGODB
 -- =============================================================================
 
--- Open MongoDB shell (local)
+--- Open a local MongoDB shell.
 keymap.set("n", "<leader>Dm", "<cmd>MongoDB<CR>", { desc = "Open MongoDB Shell" })
 
--- Open MongoDB in Docker container
+--- Open a MongoDB shell inside a Docker container.
 keymap.set("n", "<leader>DM", "<cmd>MongoDBDocker<CR>", { desc = "MongoDB Docker Shell" })
 
 -- =============================================================================
 -- REDIS
 -- =============================================================================
 
--- Open Redis CLI (local)
+--- Open a local Redis CLI session.
 keymap.set("n", "<leader>Di", "<cmd>Redis<CR>", { desc = "Open Redis CLI" })
 
--- Open Redis in Docker container
+--- Open a Redis CLI session inside a Docker container.
 keymap.set("n", "<leader>DI", "<cmd>RedisDocker<CR>", { desc = "Redis Docker CLI" })