max / balanced_breakfast

Move spacing onto makeover-geometry BB's charter already named an invariant layer and said a theme overrides colour only. This does not introduce that idea, it follows it: a layer that never varies by theme has no reason to belong to one app, so --space-1..6 leaves :root for the makeover-geometry crate that GoingsOn and audiofiles already read. build.rs materialises css/geometry.css beside the themes it already writes, and every gap, padding and margin now names what it separates rather than how big it is. Density hangs off @media (hover: none), not off the 768px breakpoint. Density is who is operating the app; the breakpoint is how wide the window is, and a narrow window on a desktop still has a pointer in it. BB already kept a hover:none block for exactly that distinction, so the touch preset lands with the touch overrides that were already there, and the hand-written "larger tap targets" spacing in the mobile block goes away: a preset that opens every gap at once says the same thing better than three hand-picked rules. One lint subtlety worth knowing. theme-token-coverage reads the :root body for anything shaped like a token name, so an explanatory comment inside :root that mentions a token pattern fails it. The note about where spacing went therefore sits below the closing brace, and the generated file is outside what the rule scans: every token in it is invariant by construction, which is the whole reason the file exists. Fixes three stale comments in passing, all in blocks this change already opened: theme-common became makeover, the design-system doc moved to the wiki in July, and the [data-color] variants consume the category intents rather than the accent names that no longer exist. Layout is deliberately not preserved; the vocabulary is tighter than the scale it replaces.