## Summary
Follow-up to #5644. Cmd +/- had become a text-only zoom: type scaled
while rem-based padding, gaps, widths, avatars, and controls stayed
frozen, which produced cramped layouts (see [#buzz-frontend
thread](buzz://message?channel=a410ffde-c61f-416a-96e0-c296b5f5ecc9&id=1a758115cf07b00c097f6e988553908c045165325a57637519cfa7ed9c9accec)).
Root cause: #5644 introduced a virtual typography rem so the **Font
size** preference could change text without moving layout — a good
decoupling — but it also routed **Cmd +/- zoom** through that same
px-valued token and pinned the real root at 16px. One decision ("freeze
layout") was applied to two dials that shouldn't share it.
This PR gives each dial one owner and lets CSS compose them:
| Control | Changes | How |
|---|---|---|
| **Cmd +/- zoom** | Everything — true zoom | Scales the real `<html>`
font-size again (`useWebviewZoomShortcuts`) |
| **Font size preference** | Text only | Sets `data-font-size`;
`typography.css` maps it to a unitless `--buzz-type-scale`, mirroring
how density already works |
`--buzz-type-rem` becomes `calc(1rem * var(--buzz-type-scale))` —
rem-relative, so it rides on zoom automatically. Resulting text px = `16
× zoom × scale × token-ratio`. The 13 / 14 / 15px conversation contract
is unchanged at default zoom. Density and the type ramp from #5644 are
untouched.
The preference module no longer does px math or knows about zoom; the
zoom hook no longer imports the preference module. Net deletion in
production code.
## Validation
- `pnpm test` — 5,308 desktop unit tests
- `pnpm check:px-text`, `tsc --noEmit`, biome
- Playwright: `top-chrome-zoom-clearance.spec.ts` (native-chrome
clearance stays fixed under root zoom),
`inbox-refactor-screenshots.spec.ts` (zoomed row padding now asserts
`4.4px` instead of the frozen `4px`), and both `profile.spec.ts` zoom
tests (composed zoom × preference, cross-window storage reset)
- Before/after screenshots at 140% zoom in the comment below
---------
Signed-off-by: morgmart <98432065+morgmart@users.noreply.github.com>
Co-authored-by: Claude <noreply@anthropic.com>
## Summary
- Add separate **Font size** and **Conversation density** controls in
Appearance.
- Use a 13 / 14 / 15px conversation text ramp for Smaller / Default /
Larger while scaling interface typography through a shared virtual-rem
system.
- Keep layout geometry fixed while typography changes, and compose Cmd
+/- text zoom on top of the selected preference.
- Let Compact, Comfy, and Spacious control conversation row spacing plus
paragraph and list rhythm in Markdown content across Buzz.
- Preview font size and density together with click-and-drag comparison;
interrupted scrubbing restores the saved preference.
- Synchronize preferences across open Buzz windows, including full
local-storage clears during sign-out or dev reset.
- Promote the segmented control to shared UI and make Settings rows
adapt to their card width.
## Validation
- `just ci`
- 4,965+ desktop unit tests across the final merged branch
- 1,465 mobile tests through the full repository gate
- Focused Playwright coverage for font-size/density independence, drag
preview cancellation, Inbox geometry, thread rendering, keyboard zoom,
and cross-surface typography
- Fresh E2E build against the final merged branch
---------
Signed-off-by: kenny lopez <klopez4212@gmail.com>
Signed-off-by: morgmart <98432065+morgmart@users.noreply.github.com>
Signed-off-by: Princess Donut <b238ea756dee4d98afa5883fc7f1de61eeabe65bf700e3a5a5a80db5e42e2c2b@buzz.block.builderlab.xyz>
Co-authored-by: Princess Donut <b238ea756dee4d98afa5883fc7f1de61eeabe65bf700e3a5a5a80db5e42e2c2b@buzz.block.builderlab.xyz>
Co-authored-by: morgmart <98432065+morgmart@users.noreply.github.com>
