Mimi mobile gets a face — Home redesign, a named color system, and native tab icons
The Mimi mobile app moved from placeholder Expo art and an emoji tab bar to a branded Home screen, a role-named light/dark color system, and SF Symbols tab icons — a visual rebrand with no behavior change, committed mobile-only.
Mimi (the mobile client) had been running on Expo's stock scaffolding: placeholder icon art, an emoji tab bar, and a Home tab that read like a prototype. This batch is a pure visual rebrand — no logic, no new screens, no data changes — just making the app look like a product. It landed as commit 8c83b9d (11 files, 358 insertions / 77 deletions), staged mobile-only so unrelated working-tree churn (codex's practice-bank edits, an INTERVIEW_PREP.md, a codex_review/ dir) stayed out of it.
A color system instead of scattered hex
The most load-bearing change is the smallest-looking one: mobile/src/constants/theme.ts went from a thin palette to a role-named token set for both light and dark — primary / primaryStrong / primarySoft, accent / accentSoft, coral, surfaceRaised, border, textSecondary. Screens now reference a role (theme.primary, theme.surfaceRaised, theme.border) rather than a raw value. That's what makes the rest of the redesign cheap: the Home rewrite reads tokens, so a future palette change is one file, not a hunt for hex codes across components.
Home, rebuilt around a warm-up-then-shadow flow
mobile/src/app/(tabs)/index.tsx carries most of the diff (+307 LOC). It now has a branded header, an account card, a primary-colored hero with a CTA that routes to /gym — pushing the user into the one-sentence warm-up before shadowing — then a row of QuickCards and an icon-based tool grid (GridCard + SectionLabel). The hero copy is real i18n, not hardcoded: home.hero{Title,Sub,Cta} added to mobile/src/lib/i18n-messages.ts in EN ("Speak from clips" / "Start today") and KO ("클립으로 바로 말하기" / "오늘 시작").
Native iconography over text glyphs
The tab bar (mobile/src/app/(tabs)/_layout.tsx) dropped emoji for expo-symbols SymbolView (SF Symbols), with weight flipping regular→bold on focus. Quick/grid cards declare per-platform icon names ({ ios: 'play.rectangle.fill', android: 'smart_display', web: 'smart_display' }), so iOS gets real SF Symbols and other platforms fall back by name. themed-text.tsx got matching title/subtitle typography tweaks. The asset PNGs — icon.png, splash-icon.png, the three Android adaptive layers, and logo-glow.png — were swapped for the new Mimi icon.
What's verified vs. reported
Verified this turn: git show --stat 8c83b9d lists exactly 11 mobile/ files and nothing else; git diff confirms each change described above. The TypeScript check (tsc --noEmit), the iOS Release build, and the device install were reported green in the working session, but I did not re-run them in the turn that wrote this entry, so I'm not claiming them as freshly verified here. Auto-launch on the phone failed for a mundane reason — the device was locked — not a build problem.
Takeaway
Name color tokens by role, never by value. The palette expansion looks like the boring part of a redesign, but it's the part that makes every screen edit afterward a one-liner against theme.* instead of a find-and-replace across hex literals — and it's what let the Home rewrite stay focused on layout instead of color bookkeeping.