fix: polish widget screens and previews

[jvsena42]

This PR:

1. Renames the Bitcoin Price widget edit and preview screen titles for clarity
2. Uppercases the weather label on the OS home-screen widget
3. Darkens the in-app widget previews and OS widget background to gray6
4. Removes the non-functional "Show Widget Titles" setting and its plumbing
5. Removes the now-unused gray5 color

Description

A set of small follow-up fixes on top of the widgets foundation work.

The Bitcoin Price widget edit screen now titles itself "Bitcoin Price" instead of the generic "Widget Feed", and the Price preview screen header now reads "Widget Settings". The weather label on the OS home-screen widget is now uppercased to match the other widget labels.

The in-app widget previews and the OS app widget background now use gray6 (#1C1C1C) instead of gray5, and the now-unused gray5 color has been removed.

The "Show Widget Titles" setting has been removed end-to-end: the toggle in Widget Settings, its persisted value, the migration mapping, and the now-dead flows across the Home, Blocks, Suggestions, and Weather view models. The flag was never read by any renderer, so removing it has no visible effect beyond dropping the inert toggle. Existing persisted values are ignored safely on read.

Preview

home-widgets.webm

in-app-widgets.webm

removed-widget-title.webm

QA Notes

Manual Tests

• 1. Home → add/edit Bitcoin Price widget → edit: AppBar title reads "Bitcoin Price" (not "Widget Feed").
• 2. Bitcoin Price widget → preview: AppBar title reads "Widget Settings".
• 3. Home screen (OS) → add Weather widget: the label is uppercased.
• 4. in-app widget previews (Blocks, Facts, Headlines, Price, Weather) → background: darker gray6 tone.
• 5. Home screen (OS) → any widget background: darker gray6 tone.
• 6a. Settings → Widgets: no "Show Widget Titles" toggle is shown.
  • 6b. remaining Widgets toggles and reset actions still work.

Automated Checks

• N/A — copy, color, and dead-code removal only; no automated coverage added or changed.
• Local: compileDevDebugKotlin, testDevDebugUnitTest, and detekt all pass.

[ovitrif]

utAck

[piotr-iohk]

@ovitrif please don't merge without CI being green. The failures need to be investigated.

[ovitrif]

@ovitrif please don't merge without CI being green. The failures need to be investigated.

Sorry, too late this time 🥲