Groundwork for the continuous interface scale (a root font-size lever): every size the UI derives from must be root-relative, or it freezes while the rest grows. Gate for this commit: at the default 16px root the app renders pixel-identical to before — every conversion is exact (11px = 0.6875rem …). - The 8 panel-chrome tokens in styles.css: px -> rem, and the data-text compact/large tiers are DELETED — a continuous scale replaces discrete tiers. Same for --w7-fs (12px -> 0.75rem) and the win7 --radius (5px -> 0.3125rem, still landing rounded-md exactly on --w7-el-bdr's 3px). --radius-sm/md subtrahends: px -> rem, or corners would sharpen as the UI grew. - All 93 text-[11px]/text-[10px] arbitraries -> rem equivalents, plus the two inline padding:24px empty-state cells in the 7like file panel. - 7like.css gains a scale bridge in skinfix: 7.css is 370 px values with zero rem, and --w7-font reaches only 15 rules' TYPOGRAPHY — under a root lever win7 text would grow inside boxes frozen at 23px/14px/15px. The bridge re-expresses 7.css's size vars and its hardcoded box metrics (buttons via .w7-btn only, inputs, table rows/headers, title-bar controls, menu items, tabs, the 10pt check glyph) in rem at identical scale-1 pixels. 1px hairlines and focus rects stay px deliberately — crisp at any scale, and the tr border exists precisely to stop selection shifting rows. - Two skinfix traps found while writing it, one by reasoning and one by pixels: (a) NO blanket `.win7 button` restatement — skinfix outranks the skin-layer neutralizer that strips 7.css's 75x23 metrics off the ~84 icon buttons, so a blanket rule would re-inflate them all; (b) restating a base rule in skinfix also outranks 7.css's own VARIANTS of it by layer — the title-bar rule silently shrank the close button from 48px to 29px until the harness pixel diff caught it, and the active tab's padding-bottom needed the same treatment. Both variants are restated alongside their base rules. - TS px constants that mirror rem CSS are the latent-bug half of this work: both context menus' flip/clamp math converts through a new @core/metrics remPx() helper reading the LIVE root font-size (the shadlike menu's MENU_W=224 diverged from its w-56 box the moment scale != 1; the 7like menu's [style.width.px] pinned the box at 200px while text grew — it now binds width in rem, so math and box cannot disagree). The editors' cachedCharWidth is now keyed on the computed font string, self-invalidating under any font change, and both || px fallbacks derive from the element's font size instead of assuming a 16px root. Verified: tsc + build clean; modern and win7 live captures and the harness all diff to zero against pre-change baselines in their opaque regions (the harness to exactly zero end to end; modern's only delta is the native GTK titlebar focus state; win7's is the translucent Aero corner over the desktop). Co-Authored-By: Claude <noreply@anthropic.com>
Ui
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