Add Emacs config with install scripts for laptop and work

Shared: init.el / early-init.el with Vertico stack, Corfu, Eglot,
treesit-auto, Catppuccin Mocha, doom-modeline, Magit, avy, harpoon,
embark, wgrep, expand-region, envrc, org-mode, and drop-in lang loader.

Lang configs split by stow target:
- shared: elisp, org
- laptop: C/C++, Rust, Go, LaTeX (AUCTeX + latexmk + Zathura)
- work:   C#, JS/TS/HTML/CSS/React (apheleia+prettier), Copilot

install-personal.sh: Fedora — gcc/clang, rustup, Go, texlive, zathura
install-work.sh: Ubuntu 24.04 WSL — dotnet-sdk-10.0, Node 22 via nvm, ts-ls

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

install-work.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+# Work workstation dev dependencies — Ubuntu 24.04 LTS (WSL)
+# Languages: C#, JavaScript, TypeScript, Node.js, HTML, CSS, React
+set -euo pipefail
+
+sudo apt-get update -q
+
+# --- Core tools ---
+# curl may not be present in a minimal WSL image
+sudo apt-get install -y \
+    emacs \
+    git \
+    ripgrep \
+    fd-find \
+    stow \
+    curl
+
+# Ubuntu names the fd binary 'fdfind'; add a user-local symlink so tooling finds it as 'fd'
+if command -v fdfind &>/dev/null && ! command -v fd &>/dev/null; then
+    mkdir -p "$HOME/.local/bin"
+    ln -sf "$(command -v fdfind)" "$HOME/.local/bin/fd"
+fi
+
+# --- .NET 10 (in Ubuntu 24.04 main repo — no extra source needed) ---
+sudo apt-get install -y dotnet-sdk-10.0
+
+# C# language server (NuGet global tool)
+dotnet tool install --global csharp-ls 2>/dev/null \
+    || dotnet tool update --global csharp-ls
+
+# --- Node.js 22 LTS via nvm (Ubuntu 24.04 repos ship 20.x; nvm adds no apt sources) ---
+export NVM_DIR="${NVM_DIR:-$HOME/.nvm}"
+if [[ ! -d "$NVM_DIR" ]]; then
+    curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.1/install.sh | bash
+fi
+# shellcheck source=/dev/null
+source "$NVM_DIR/nvm.sh"
+nvm install 22
+nvm alias default 22
+nvm use default
+
+# --- JS / TS / HTML / CSS language servers and formatters ---
+npm install -g \
+    typescript \
+    typescript-language-server \
+    vscode-langservers-extracted \
+    prettier \
+    eslint
+
+echo "Work dev dependencies installed."