feat(ui-lvgl): roadmap stage 6 - light motion, unified style, accent picker, splash

- Anim.h: screens emerge from the middle (background cover fades, content
  drifts 6 px), Home pages slide, popups and toasts rise and fade in
- Theme.h: accent rules (fill = primary action, dim fill = selected, text =
  names/counts/modes), theme layer over the default theme, radius tokens,
  accent colour picker (Settings > Display & power > LOOK, NVS mc_ui)
- Splash with the Solo and upstream versions
- Status icons in equal cells, L1-style relay marks, path window with a hop
  diagram, tile download popup fits the screen (WiFi only in Settings)
- Perf: uncompressed fonts, two 120-line PSRAM buffers (~48 -> ~33 ms per
  transition frame); UI_PERF_TEST harness

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/development/l2-hardware-checklist.md

@@ -277,3 +277,16 @@ The speaker plays through the ES8311 codec (I2S MCLK 10 / BCK 11 / WS 12 / DOUT
 - [ ] After "restarting..." the device boots the new version (Settings shows it); contacts, messages, settings, PIN and WiFi kept
 - [ ] Up to date → "Up to date - the latest release is vX"; WiFi off / no network / map download running → toasts instead
 - [ ] Wrong network in the middle (unplug router) → "Download stalled", old firmware still boots
+
+## Roadmap stage 6: motion and look (2026-09-26)
+- [ ] Boot: splash (amber MESHCORE, SOLO, Solo version, "MeshCore x - built date", three dots rising in turn) for ~2.5 s, then fades into Home (or the PIN card); a tap skips it
+- [ ] Changing screens: the new one fades in from the background with its content drifting into place (up going in, down coming back); rebuilding the same screen (settings toggles, a new message) doesn't animate
+- [ ] Selected things look the same everywhere (dim accent + light text): Nearby chips, Clock / Bot / Diagnostics tabs, Repeater segments; primary actions are full accent with dark text (map Download / Resume, Firmware update, WiFi / channel Save, Clock Start, alarm Dismiss, New message)
+- [ ] Settings > Display & power > LOOK > Accent colour: tap a swatch → the page, status icons, chips, names recolour at once; other screens in the new colour; kept after a reboot (splash too)
+- [ ] Home page swipe / dot tap: the tile row slides in from the swipe side
+- [ ] Popups (map tools, Nearby advert, scan, radio frequency, map download): backdrop fades, panel rises; toasts rise in and fade out
+- [ ] Buttons shrink slightly while pressed
+- [ ] Status bar icons evenly spaced, muted shows a speaker with a cross (also next to muted conversations)
+- [ ] Own channel post: "1s ✓ 2" (green, number of repeaters heard relaying it) under the bubble, nothing before an echo; DM: ✓ delivered, ✗ (red) not delivered, "..." sending
+- [ ] Hold a message: quote, time + hops, path diagram sender → repeaters → this device; own post: "Relayed by n repeaters" + names; own DM: Delivered / Not delivered / Sending in words
+- [ ] Map download popup: no WiFi button, fits the screen (scrolls if the unfinished-job row is shown); no network saved → toast pointing to Settings > WiFi

docs/development/l2-roadmap.md

@@ -82,8 +82,32 @@ L1 splits its tools into many small screens because of the joystick and the
 
 ## 6. Theme
 
-- [ ] Develop the current look into a consistent, recognisable style
-      (colours, corners, type, icons, states), after the layout of stage 4.
+- [x] A consistent style, written down in `Theme.h`: accent fill = the
+      primary action (Download, Install, Save, Go), dim accent fill =
+      selected / on (tabs, chips, segments -- also the default theme's
+      CHECKED), accent text = names, counts, modes; one card radius for
+      buttons and rows, pills for chips, `RADIUS_SM` inside; slightly lighter
+      surfaces. Accent colour selectable (Settings > Display & power > LOOK:
+      amber, orange, coral, violet, cyan, lime; NVS `mc_ui`).
+- [x] Light motion (`Anim.h`): a new screen emerges from the middle (a
+      background-coloured cover fades while the content drifts 6 px), Home
+      pages slide after a swipe, popups and toasts rise and fade in, buttons
+      shrink a little while pressed.
+- [x] Frame time measured on the device (`-D UI_PERF_TEST`: walks screens by
+      itself, prints render + flush per refresh): ~48 → ~33 ms per transition
+      frame with uncompressed fonts and two 120-line buffers. Internal-RAM /
+      DMA buffers, `-O2`, hot code in IRAM, two draw threads, system malloc:
+      no gain. The rest is LVGL's software rendering at 320x240.
+- [x] Status bar icons in equal cells; muted is a speaker with a cross.
+- [x] Under an own message: the age and a small mark as in L1 (✓ n repeaters
+      for channel posts; ✓ / ✗ / ... for DMs) instead of the words.
+- [x] The path window of a message: quote, time and hops, a path diagram
+      (sender → repeaters → this device), repeaters that relayed an own post,
+      an own DM's delivery in words.
+- [x] Tile download popup fits the screen; its WiFi button went (WiFi is set
+      up in one place, Settings).
+- [x] Splash screen (`Splash.h`): MeshCore wordmark, SOLO, the Solo and the
+      upstream version, build date, loading dots.
 
 ## 7. Research: LVGL for the other displays
 
@@ -100,3 +124,13 @@ L1 splits its tools into many small screens because of the joystick and the
       chip / register (devices on the bus: 0x14, 0x18, 0x21, 0x22, 0x2c,
       0x34, 0x48, 0x5d). Found 2026-09-26.
 
+Ideas to come back to (2026-09-26):
+
+- [ ] Speaker click: would keeping the amplifier on at minimum volume
+      remove it?
+- [ ] Import routes from the SD card (optional extra).
+- [ ] Battery life without losing features, above all CPU sleep.
+- [ ] Live tiles: don't keep them, or give them a bounded cache on the card
+      so they never fill it.
+- [ ] Vector maps and other tile sources (to think through).
+