Real web app font proof

Both commits used separate checkouts and fresh databases, with T3CODE_DEV_SEED=0.
Browser: Chromium, Linux, viewport 1280x800 CSS pixels, device scale 2, light theme.
Interface size 16px; assistant markdown computed at 14px / 22.75px line height.

Preparation in each checkout:
1. Run seed.py CHECKOUT and prepare-font.py CHECKOUT Monocraft.ttf before startup.
2. Start T3CODE_DEV_SEED=0 T3CODE_AUTO_BOOTSTRAP_PROJECT_FROM_CWD=0 vp run dev --home-dir CHECKOUT/.t3/manual-proof.
3. Run node apps/server/src/bin.ts project add .t3/manual-proof/workspaces/list-font-proof --title 'List font proof' --base-dir .t3/manual-proof.
4. Run node apps/server/src/bin.ts thread start .t3/manual-proof/workspaces/list-font-proof 'Show the three numbered items' --title 'Numbered list font check' --provider devReplay --model showcase --wait --json --base-dir .t3/manual-proof.
5. Pair the browser using the app's pairing form and a freshly minted local token.

Browser steps, identical on both commits:
1. Open Settings / Appearance, load the supplied font via document.fonts.load('14px Monocraft'), fill Interface font family with Monocraft, and press Enter.
2. Open the seeded thread, close its thread details panel, and click the response heading to blur the composer.
3. Inspect the digits 1, 2, 3 at the response lane's left edge. Capture two screenshots at least 500ms apart; repeat until pixel-identical.
4. Repeat with Interface font family set to Liberation Sans.
5. Read computed padding and list item rectangles using browser evaluation; compare the proportional-font list geometry across commits.

Observed: Monocraft digits are visibly cut off on base; head displays them completely. Liberation Sans retains 20px padding, identical item rectangles, and identical wrapping.
Monocraft is provided by the same @font-face fixture on both sides; no list CSS or render logic is modified.
Screenshots were visually inspected before upload. This is a static rendering proof, so stills were used.

AI-assisted; verified with the tests and tools listed above.