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>

shared/.config/emacs/early-init.el

@@ -0,0 +1,7 @@
+;;; early-init.el  -*- lexical-binding: t -*-
+
+;; Defer GC during startup; restore to a reasonable limit after
+(setq gc-cons-threshold (* 128 1024 1024))
+
+(add-hook 'emacs-startup-hook
+          (lambda () (setq gc-cons-threshold (* 16 1024 1024))))

shared/.config/emacs/init.el

@@ -0,0 +1,198 @@
+;;; init.el --- Emacs configuration  -*- lexical-binding: t -*-
+
+;;; Package management
+
+(require 'package)
+(add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/") t)
+(package-initialize)
+
+(unless package-archive-contents
+  (package-refresh-contents))
+
+(require 'use-package)
+(setq use-package-always-ensure t)
+
+;;; Sane defaults
+
+(setq-default
+ inhibit-startup-message       t
+ visible-bell                  t
+ make-backup-files             nil
+ auto-save-default             nil
+ create-lockfiles              nil
+ vc-follow-symlinks            t
+ find-file-visit-truename      t
+ fill-column                   80
+ tab-width                     4
+ indent-tabs-mode              nil
+ truncate-lines                t
+ sentence-end-double-space     nil)
+
+(menu-bar-mode   -1)
+(tool-bar-mode   -1)
+(scroll-bar-mode -1)
+(tooltip-mode    -1)
+
+(setq display-line-numbers-type 'relative)
+(global-display-line-numbers-mode 1)
+(column-number-mode               1)
+(global-hl-line-mode              1)
+(show-paren-mode                  1)
+(electric-pair-mode               1)
+(delete-selection-mode            1)
+
+(setq global-auto-revert-non-file-buffers t)
+(global-auto-revert-mode 1)
+
+(setq scroll-margin        4
+      scroll-conservatively 101)
+
+(setq uniquify-buffer-name-style 'forward)
+
+;;; Font — matches ghostty / tmux setup
+
+(set-face-attribute 'default nil
+                    :family "Hack Nerd Font Mono"
+                    :height 110)
+
+;;; Theme
+
+(use-package catppuccin-theme
+  :config
+  (setq catppuccin-flavor 'mocha)
+  (load-theme 'catppuccin t))
+
+;;; Discoverability
+
+(use-package which-key
+  :config
+  (setq which-key-idle-delay 0.5)
+  (which-key-mode))
+
+;;; Minibuffer — Vertico + Orderless + Marginalia + Consult
+
+(use-package vertico
+  :config (vertico-mode))
+
+(use-package orderless
+  :custom
+  (completion-styles '(orderless basic))
+  (completion-category-overrides '((file (styles basic partial-completion)))))
+
+(use-package marginalia
+  :config (marginalia-mode))
+
+(use-package consult
+  :bind (("C-x b"   . consult-buffer)
+         ("M-y"     . consult-yank-pop)
+         ("M-g M-g" . consult-goto-line)
+         ("M-g i"   . consult-imenu)
+         ("M-s l"   . consult-line)
+         ("M-s r"   . consult-ripgrep)))
+
+;; Contextual actions on any minibuffer candidate or thing at point
+(use-package embark
+  :bind (("C-." . embark-act)
+         ("C-;" . embark-dwim))
+  :custom (embark-indicators '(embark-minimal-indicator)))
+
+(use-package embark-consult
+  :hook (embark-collect-mode . consult-preview-at-point-mode))
+
+;; Edit consult-ripgrep / grep results as a buffer; save to apply across files
+(use-package wgrep
+  :custom (wgrep-auto-save-buffer t))
+
+;;; In-buffer completion — Corfu + Cape
+
+(use-package corfu
+  :custom
+  (corfu-auto        t)
+  (corfu-auto-delay  0.2)
+  (corfu-auto-prefix 2)
+  (corfu-quit-no-match 'separator)
+  :config
+  (global-corfu-mode))
+
+(use-package cape
+  :init
+  (add-to-list 'completion-at-point-functions #'cape-file)
+  (add-to-list 'completion-at-point-functions #'cape-dabbrev))
+
+;;; Visual aids
+
+(use-package rainbow-delimiters
+  :hook (prog-mode . rainbow-delimiters-mode))
+
+;; nerd-icons supplies glyphs for doom-modeline; Hack Nerd Font Mono already
+;; includes them, so M-x nerd-icons-install-fonts is only needed on first use
+;; if you see boxes instead of icons.
+(use-package nerd-icons)
+
+(use-package doom-modeline
+  :hook (after-init . doom-modeline-mode)
+  :custom
+  (doom-modeline-height                  28)
+  (doom-modeline-bar-width               4)
+  (doom-modeline-icon                    t)
+  (doom-modeline-major-mode-icon         t)
+  (doom-modeline-buffer-file-name-style  'truncate-upto-project)
+  (doom-modeline-vcs-max-length          24))
+
+;;; Tree-sitter — auto-switch to *-ts-mode when grammars are available
+
+(use-package treesit-auto
+  :custom (treesit-auto-install 'prompt)
+  :config (global-treesit-auto-mode))
+
+;;; LSP — Eglot (built-in since Emacs 29)
+
+(use-package eglot
+  :ensure nil
+  :custom
+  (eglot-autoshutdown                   t)
+  (eglot-confirm-server-initiated-edits nil)
+  (eglot-events-buffer-size             0))
+
+;;; Navigation
+
+;; Jump to any visible character — type a few chars of the target, pick the label
+(use-package avy
+  :bind (("M-j"   . avy-goto-char-timer)
+         ("C-c j" . avy-goto-line)))
+
+;; Pin files to numbered slots per project; jump to them instantly
+(use-package harpoon
+  :bind (("C-c h a" . harpoon-add-file)
+         ("C-c h h" . harpoon-toggle-file)
+         ("C-c h 1" . harpoon-go-to-1)
+         ("C-c h 2" . harpoon-go-to-2)
+         ("C-c h 3" . harpoon-go-to-3)
+         ("C-c h 4" . harpoon-go-to-4)))
+
+;; Expand selection by semantic units: word → symbol → string → block → …
+(use-package expand-region
+  :bind ("C-=" . er/expand-region))
+
+;;; Git
+
+(use-package magit
+  :bind ("C-x g" . magit-status))
+
+;;; Direnv — respect .envrc per buffer (extends your shell direnv hook into Emacs)
+
+(use-package envrc
+  :hook (after-init . envrc-global-mode))
+
+;;; Server — enables emacsclient ('e' alias) and AUCTeX inverse search
+
+(use-package server
+  :ensure nil
+  :config (unless (server-running-p) (server-start)))
+
+;;; Drop-in language configs (stow'd from laptop/ or work/)
+
+(let ((lang-dir (expand-file-name "lisp/langs" user-emacs-directory)))
+  (when (file-directory-p lang-dir)
+    (dolist (f (directory-files lang-dir t "\\.el$"))
+      (load f nil t))))

shared/.config/emacs/lisp/langs/elisp.el

@@ -0,0 +1,7 @@
+;;; lisp/langs/elisp.el --- Emacs Lisp  -*- lexical-binding: t -*-
+
+;; Inline macro expansion — C-c e to expand, q to collapse
+(use-package macrostep
+  :bind (:map emacs-lisp-mode-map ("C-c e" . macrostep-expand)))
+
+(add-hook 'emacs-lisp-mode-hook #'flymake-mode)

shared/.config/emacs/lisp/langs/org.el

@@ -0,0 +1,26 @@
+;;; lisp/langs/org.el --- Org mode  -*- lexical-binding: t -*-
+
+(use-package org
+  :ensure nil
+  :custom
+  (org-directory             "~/org")
+  (org-startup-indented      t)
+  (org-startup-folded        'content)
+  (org-hide-emphasis-markers t)
+  (org-pretty-entities       t)
+  (org-return-follows-link   t)
+  (org-todo-keywords
+   '((sequence "TODO(t)" "NEXT(n)" "WAITING(w)" "|" "DONE(d)" "CANCELLED(c)")))
+  :bind (("C-c a" . org-agenda)
+         ("C-c c" . org-capture)
+         ("C-c l" . org-store-link)))
+
+;; Modern, clean visual style for org buffers and agenda
+(use-package org-modern
+  :hook ((org-mode             . org-modern-mode)
+         (org-agenda-finalize  . org-modern-agenda)))
+
+;; Reveal emphasis markers and links when cursor is on them
+(use-package org-appear
+  :hook (org-mode . org-appear-mode)
+  :custom (org-appear-autolinks t))