doc: add one-liner clone command to quickstart

fix: run feature installers as remote user, not root

doc: link/tweaks

doc improvement

chore: cleanup and clarity

docs: agent reminder to run commands inside devcontainer

docs: clarity

improved README

extract custom devcontainer feature for FAFO stack

docs: drop redundant --workspace-folder . from devcontainer commands

cache tool installs across rebuilds via volume symlinks

parallelise postCreateCommand setup scripts

refactor devcontainer: streamline post-create setup into a single script

refactor devcontainer: consolidate AI tool volumes and extract setup scripts

add shared net container for stable network namespace