refactor: migrate UI to Material 3 with unified Material Symbols icons - #370
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Resources-only refresh (no logic changes): - Migrate Theme.Numo (light + dark) to Theme.Material3.DayNight with a full M3 color role set generated from the numo_green (#00C244) seed via HCT tonal palettes (m3_* tokens in colors.xml) - Keep the app's neutral surfaces, edge-to-edge system bars, custom keypad attrs and the ThemeManager POS themes intact - Re-parent component styles to M3 (buttons, TextInputLayout, snackbar, dialogs, popup menus, toolbars, bottom sheets); 28dp M3 corners for dialogs and modal bottom sheets - Replace 80 ad-hoc icons with official Material Symbols outlined vectors under the same resource names (fill tokens and sizes preserved so untinted usages render identically) - Convert ic_language and contactless PNGs to vectors (now day/night tinted); drop unused ic_lightning.png - Keep brand/third-party assets untouched (wordmark, launcher, Nostr / Telegram / X logos, status dots, success badge) - Swap 5 inline M2 button style refs in layouts to M3 equivalents (1:1, no ID/structure changes) Verified: assembleDebug, testDebugUnitTest (all pass), lintDebug (no new issues vs baseline)
Replace all hardcoded dp corner radii in the shared shape drawables with @dimen/radius_* tokens. Values unchanged (16/28/12/26/100/18/20/ 8dp map to existing tokens; adds radius_micro=2dp, radius_xs=4dp, radius_badge=6dp, radius_s=10dp, radius_button_compact=14dp, radius_xl=24dp for the remainder). Zero visual change.
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Summary
Resources-only UI refresh (zero Kotlin/Java changes — all payment, wallet, and POS logic untouched). Migrates the app to Material 3 with a brand-derived color scheme and replaces the mixed icon set with a unified Material Symbols (outlined) set.
🎨 Material 3 theming
Theme.Numo(light + dark) now extendsTheme.Material3.DayNight.NoActionBarprimary/secondary/tertiary/error+ containers,surfaceVariant,outline,surfaceContainer*, inverse roles) generated as an HCT tonal palette from thenumo_green(#00C244) seed — same engine as Material Theme BuilderTextInputLayout, snackbar, dialogs, popup menus, toolbars, modal bottom sheets🔲 Icons
ic_bitcoin→ realcurrency_bitcoin₿,ic_quick_charge→dialpad(matches its actual 3×3 glyph),ic_open_with→share,ic_tip→paidic_language.png/contactless.png→ vectors (now correctly tinted in dark mode); unusedic_lightning.pngremovedHousekeeping
Widget.MaterialComponents.Button.*style refs swapped to M3 equivalents (1:1 — no ID or structural changes, ViewBinding unaffected)Verification
./gradlew assembleDebug./gradlew testDebugUnitTest— all tests pass./gradlew lintDebug— no new issues vs. baselineTheme.Material3descends fromTheme.AppCompat(safe for all existing activities)Test plan