fix(ui-lvgl): unlock fades away on release, channel names shown as named

- Unlocking fades the lock screen out while the screen underneath drifts
  into place; the slider unlocks on letting go at the end and springs back
  when let go earlier
- Channel names no longer get a "# " prefix (thread title, channel popup,
  live share targets) -- "#" marks a hashtag channel; favourite contacts in
  the live share list are starred instead

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

docs/development/l2-hardware-checklist.md

@@ -290,3 +290,5 @@ The speaker plays through the ES8311 codec (I2S MCLK 10 / BCK 11 / WS 12 / DOUT
 - [ ] 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
+- [ ] Unlock (slider or right PIN): the lock fades away while the screen underneath drifts up into place, no instant jump
+- [ ] Lock slider: knob snaps to the end near it but only unlocks on letting go; let go earlier → it springs back smoothly