nvim,tmux,kitty: full config overhaul (AstroNvim → native 0.12)

Replaces AstroNvim v5 with from-scratch Neovim 0.12 config using
vim.lsp.config()/vim.lsp.enable() natively, lazy.nvim, blink.cmp,
and smart-splits tmux integration.

tmux: new C-Space prefix, hjkl pane nav, resize key table, tpm plugins.
kitty: add allow_remote_control for smart-splits.

dot_config/nvim/lua/plugins/dap/js.lua

@@ -0,0 +1,41 @@
+local M = {}
+
+local function setup()
+  local dap = require("dap")
+  local mason_path = vim.fn.stdpath("data") .. "/mason/packages/js-debug-adapter"
+
+  dap.adapters["pwa-node"] = {
+    type = "server",
+    host = "localhost",
+    port = "${port}",
+    executable = {
+      command = "node",
+      args = { mason_path .. "/js-debug/src/dapDebugServer.js", "${port}" },
+    },
+  }
+
+  local js_config = {
+    {
+      type = "pwa-node",
+      request = "launch",
+      name = "Launch file",
+      program = "${file}",
+      cwd = "${workspaceFolder}",
+      sourceMaps = true,
+    },
+    {
+      type = "pwa-node",
+      request = "attach",
+      name = "Attach",
+      processId = require("dap.utils").pick_process,
+      cwd = "${workspaceFolder}",
+    },
+  }
+
+  for _, lang in ipairs({ "javascript", "typescript", "svelte" }) do
+    dap.configurations[lang] = js_config
+  end
+end
+
+setup()
+return M