Reorganize installed tools using home-maker pattern (Arch + Fedora)

[Copilot]

Replaces the monolithic Makefile with a modular home-maker pattern that supports both Arch Linux and Fedora.

What changed

File	Purpose
Makefile	Rewritten — OS detection, per-manager target generators, group & meta targets
hm.sh	New — interactive fzf frontend to install/upgrade any package or group
dev/cli.mk	Core CLI tools: fzf, git, cmake, zsh, neovim, eza, zoxide, …
dev/langs.mk	Language toolchains: nodejs, npm, go, dotnet-sdk, rustup, dart
dev/rust.mk	Cargo tools: sccache, configman, gprofile, cargo-cache, cargo-edit
dev/fonts.mk	Noto fonts + ttf-ms-fonts (distro-specific package name overrides)
desktop/apps.mk	Firefox, tilix, libreoffice, gnome-browser-connector, VSCode, pycharm, zoom, snapd
desktop/gnome.mk	All gsettings GNOME preferences from the original Makefile

How it works

OS is detected at parse time via /etc/os-release. Every .mk file appends to PKG, AUR, CARGO, GO, or NPM lists. The Makefile generates individual .PHONY targets for each entry using the right install command for the active distro. PKG_<name> variables handle packages with different names between distros (e.g. libreoffice-fresh on Arch vs libreoffice on Fedora).

make fzf          # install a single package
make cli          # install a group
make dev          # all dev tools
make all          # everything
./hm.sh           # interactive fuzzy picker
make aur-helper   # bootstrap paru (Arch only)
make link-dots    # link dotfiles via configman

Distro differences handled

• Arch: pacman for official packages, paru for AUR (zoom, dart, ttf-ms-fonts, gnome-browser-connector, snapd)
• Fedora: dnf for everything; AUR targets are skipped gracefully; zoom downloads directly from zoom.us; dart installed via snap; dotnet-sdk uses versioned package name