dotfiles: initial scaffold for Coder devboxes

install.sh (symlink home/* + merge-seed ~/.claude.json onboarding), gitconfig,
bash_aliases, global gitignore, inputrc, tmux.conf. Golden owns tools+starship;
this owns personal config. Secrets stay in Coder user-secrets.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

home/.bash_aliases

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+# Personal aliases — sourced automatically by Debian's default ~/.bashrc.
+# Golden owns starship/mise/eza/zoxide/fzf setup; these just add shortcuts.
+
+# listing (eza is installed in golden)
+if command -v eza >/dev/null 2>&1; then
+  alias ls='eza --group-directories-first'
+  alias ll='eza -la --group-directories-first --git'
+  alias la='eza -a --group-directories-first'
+  alias lt='eza --tree --level=2'
+fi
+
+# navigation
+alias ..='cd ..'
+alias ...='cd ../..'
+alias ....='cd ../../..'
+
+# git
+alias gs='git status -sb'
+alias gd='git diff'
+alias gds='git diff --staged'
+alias ga='git add'
+alias gc='git commit'
+alias gp='git push'
+alias gl='git log --oneline --graph --decorate -20'
+alias gco='git switch'
+
+# tooling shortcuts (all present in golden)
+alias k='kubectl'
+alias dc='docker compose'
+alias d='docker'
+alias tf='terraform'
+
+# safety
+alias rm='rm -i'
+alias cp='cp -i'
+alias mv='mv -i'

home/.config/git/ignore

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+# Global gitignore (referenced by ~/.gitconfig core.excludesfile)
+# OS / editor cruft that should never land in any repo.
+.DS_Store
+Thumbs.db
+*~
+*.swp
+*.swo
+.idea/
+.vscode/
+*.log
+.env
+.env.local
+node_modules/
+__pycache__/
+*.pyc
+.venv/
+.direnv/

home/.gitconfig

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+[user]
+	name = lollen
+	email = loloolllool@lolcathost.se
+[init]
+	defaultBranch = main
+[pull]
+	rebase = true
+[push]
+	autoSetupRemote = true
+	default = current
+[fetch]
+	prune = true
+[rebase]
+	autoStash = true
+[merge]
+	conflictStyle = zdiff3
+[diff]
+	colorMoved = default
+[color]
+	ui = auto
+[core]
+	excludesfile = ~/.config/git/ignore
+[alias]
+	st = status -sb
+	co = checkout
+	sw = switch
+	br = branch
+	ci = commit
+	ca = commit --amend
+	unstage = restore --staged
+	last = log -1 HEAD
+	lg = log --oneline --graph --decorate -20
+	lga = log --oneline --graph --decorate --all -30

home/.inputrc

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+$include /etc/inputrc
+
+# history search on the arrow keys (type a prefix, press Up)
+"\e[A": history-search-backward
+"\e[B": history-search-forward
+
+# nicer completion
+set completion-ignore-case on
+set completion-map-case on
+set show-all-if-ambiguous on
+set colored-stats on
+set colored-completion-prefix on
+set mark-symlinked-directories on

home/.tmux.conf

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+# Sensible tmux defaults. (Install tmux in the devbox if you use it; harmless otherwise.)
+set -g mouse on
+set -g history-limit 50000
+set -g base-index 1
+setw -g pane-base-index 1
+set -g renumber-windows on
+set -sg escape-time 10
+set -g default-terminal "tmux-256color"
+set -ga terminal-overrides ",*256col*:Tc"
+
+# splits keep the current path
+bind '"' split-window -v -c "#{pane_current_path}"
+bind %   split-window -h -c "#{pane_current_path}"
+bind c   new-window   -c "#{pane_current_path}"
+
+# reload
+bind r source-file ~/.tmux.conf \; display "tmux.conf reloaded"