Add 680px breakpoint to toolsntoys, foss-tools, guides, jl-early-tools:
header stacks, stats bar collapses to 2-col, sidebar/content grid stacks.
Fix table overflow in 3 guide pages: move overflow-x:hidden from body to
.guide-wrap so .guide-table-wrap scroll containers work on mobile Safari.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Hub (toolsntoys.html), JL's early tools (jl-early-tools.html), guides hub
(guides.html), FOSS Arsenal catalog (foss-tools.html), and 6 individual
guide pages covering AppImage, Linux install/uninstall, Docker, and
Facebook streaming. All pages use the night-sky adaptation of the
adventurers_toolbox3 aesthetic with dimmed ember alpha (0.38/0.65).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
