chore(deps): STU-2113 patch bump biome, postcss, react + react-dom

[nocoo]

Summary

Three atomic patch bumps for open dependency issues:

• @biomejs/biome 2.5.4 → 2.5.5 (biome.json schema URL updated in the same commit) — closes [🥝 choko][deps] @biomejs/biome 2.5.4 → 2.5.5 #139
• postcss 8.5.20 → 8.5.21 — closes [🥝 choko][deps] postcss 8.5.20 → 8.5.21 #140
• react + react-dom 19.2.7 → 19.2.8 (paired) — closes [🥝 choko][deps] react 19.2.7 → 19.2.8 #141, closes [🥝 choko][deps] react-dom 19.2.7 → 19.2.8 #142

All semver ranges retain the existing ^ caret (matching prior bumps like 7a24a42). package.json and bun.lock root workspace declarations are consistent with the resolved package entries.

Tracked in Multica STU-2113.

Verification

Local pre-push gates all green on d7f7a5d:

• bun install --frozen-lockfile — no drift
• bun run lint — clean
• bun run typecheck — clean
• bun run test — 638/638 pass (14 test files)
• bun run build — success
• bun run test:coverage — Statements 97.57% / Branches 95.21% / Functions 99.67% / Lines 99.38% (targets: src/components/ui, src/lib ≥ 95% / branches ≥ 94%)

Commits

• 83433bc chore(deps): bump @biomejs/biome 2.5.4 → 2.5.5
• 6e3f251 chore(deps): bump postcss 8.5.20 → 8.5.21
• d7f7a5d chore(deps): bump react + react-dom 19.2.7 → 19.2.8

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	theme-matrix	d7f7a5d	Commit Preview URL Branch Preview URL	Jul 22 2026, 04:17 AM