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>

laptop/.config/emacs/lisp/langs/c-cpp.el

@@ -0,0 +1,11 @@
+;;; lisp/langs/c-cpp.el --- C and C++  -*- lexical-binding: t -*-
+
+(with-eval-after-load 'eglot
+  (add-to-list 'eglot-server-programs
+               '((c-mode c-ts-mode c++-mode c++-ts-mode)
+                 . ("clangd" "--background-index" "--clang-tidy"))))
+
+(dolist (hook '(c-mode-hook c-ts-mode-hook c++-mode-hook c++-ts-mode-hook))
+  (add-hook hook #'eglot-ensure))
+
+(use-package cmake-mode)

laptop/.config/emacs/lisp/langs/golang.el

@@ -0,0 +1,14 @@
+;;; lisp/langs/golang.el --- Go  -*- lexical-binding: t -*-
+
+(use-package go-mode)
+
+(with-eval-after-load 'eglot
+  (add-to-list 'eglot-server-programs
+               '((go-mode go-ts-mode) . ("gopls"))))
+
+(defun my/go-format-on-save ()
+  (add-hook 'before-save-hook #'eglot-format-buffer nil t))
+
+(dolist (hook '(go-mode-hook go-ts-mode-hook))
+  (add-hook hook #'eglot-ensure)
+  (add-hook hook #'my/go-format-on-save))

laptop/.config/emacs/lisp/langs/latex.el

@@ -0,0 +1,30 @@
+;;; lisp/langs/latex.el --- LaTeX via AUCTeX  -*- lexical-binding: t -*-
+
+(use-package tex
+  :ensure auctex
+  :custom
+  (TeX-auto-save               t)
+  (TeX-parse-self              t)
+  (TeX-master                  nil)   ; ask per-project, supports multi-file docs
+  (TeX-PDF-mode                t)
+  (TeX-source-correlate-mode   t)
+  (TeX-source-correlate-method 'synctex)
+  :config
+  ;; latexmk handles multi-pass builds (bibtex, makeindex, etc.) automatically
+  (add-to-list 'TeX-command-list
+               '("LatexMk" "latexmk -pdf -interaction=nonstopmode %s"
+                 TeX-run-command nil t :help "Run latexmk"))
+  (setq TeX-command-default "LatexMk")
+  ;; Forward search: C-c C-v jumps PDF to current source position
+  ;; Inverse search: Ctrl+click in Zathura calls emacsclient (requires server-start)
+  (add-to-list 'TeX-view-program-list
+               '("Zathura"
+                 ("zathura"
+                  (mode-io-correlate " --synctex-forward %n:0:%b") " %o")
+                 "zathura"))
+  (setq TeX-view-program-selection '((output-pdf "Zathura"))))
+
+(add-hook 'LaTeX-mode-hook #'LaTeX-math-mode)
+(add-hook 'LaTeX-mode-hook #'turn-on-reftex)
+(add-hook 'LaTeX-mode-hook #'flyspell-mode)
+(setq reftex-plug-into-AUCTeX t)

laptop/.config/emacs/lisp/langs/rust.el

@@ -0,0 +1,10 @@
+;;; lisp/langs/rust.el --- Rust  -*- lexical-binding: t -*-
+
+(use-package rust-mode)
+
+(with-eval-after-load 'eglot
+  (add-to-list 'eglot-server-programs
+               '((rust-mode rust-ts-mode) . ("rust-analyzer"))))
+
+(dolist (hook '(rust-mode-hook rust-ts-mode-hook))
+  (add-hook hook #'eglot-ensure))