feat: weather widget v61 + OS widget

[jvsena42]

This PR:

1. Redesigns the in-app Bitcoin Weather widget to match Figma v61.
2. Adds a native iOS Home Screen Bitcoin Weather widget supporting Small and Medium families.
3. Restructures the Weather edit and preview screens to the v61 carousel pattern.
4. Localizes the OS widget by mirroring the in-app language into the App Group.

Description

The in-app card collapses to a hero glyph (☀️/⛅/⛈️) with the condition title, description, and one big green fee metric. The four legacy show/hide toggles become a single-select WeatherDisplayMetric — Current Fee (fiat), Current Fee (sats), or Next Block Inclusion — matching the Figma. Existing on-disk preferences from older builds decode to the default metric.

The new BitkitWeatherWidget (Small + Medium) mirrors the in-app options through the group.bitkit App Group via WeatherHomeScreenWidgetOptionsStore, refreshes every ~2 minutes, and falls back to a direct mempool.space fetch when the cache is empty so the widget renders before the user opens the app.

OS widget localization is handled by sharing LocalizeHelpers.swift with the widget target. LanguageManager mirrors the selected language into the App Group and reloads all widget timelines on change; LocalizationHelper reads from the App Group first so the extension picks up the in-app selection. Localization keys align with bitkit-android (reuses widgets__weather__current_fee / next_block, adds shared widgets__widget__display and three condition__*__short_title variants).

Linked Issues/Tasks

FIGMA

Screenshot / Video

in-app-widget.mp4

translations.mp4

update-from-master.mp4

restore-from-android.mp4

change-currency.mp4

QA Notes

Manual Tests

• 1. Wallet home → in-app Weather widget renders v61 layout: large ☀️/⛅/⛈️ glyph, title, description, one green fee metric.
• 2a. Widgets → Bitcoin Weather → preview: "Bitcoin Weather" top bar, description, Widget Settings cell, Compact↔Wide carousel, SMALL/WIDE label, dot indicator, Save Widget button.
  • 2b. Swipe carousel: compact shows single-word title (Favorable / Average / Poor).
• 3a. Widget Settings → edit screen: DISPLAY section, three radio rows (Current Fee fiat, Current Fee sats, Next Block Inclusion), default is fiat, single-select.
  • 3b. Pick sats .
  • 3c. Pick Next Block → save .
• 4a. Home screen → add OS Weather widget at Small and Medium: both render correctly with selected metric.
  • 4b. Edit metric in-app → OS widget reloads within ~1s.
  • 4c. Install OS widget before opening the app: fallback fetch from mempool.space renders correctly.
• 5a. Settings → Language → Portuguese: OS widget strings flip to Portuguese.
  • 5b. Switch back to English: OS widget reverts.
• 6. regression: restore from Android backup with weatherPreferences: corresponding metric is selected (showCurrentFee → fiat; showNextBlockFee only → next-block).
• 7. regression: Install over main version

[jvsena42]

@codex review

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[jvsena42]

@piotr-iohk it needs update here too

[pwltr]

On the iPhone SE home screen blocks and weather widgets are lacking some space. Looks like there are size differences between phone models for these widgets that we need to account for. I think the missing weather widget emojis can be ignored, cannot reproduce it on-device.

[jvsena42]

a minimumScaleFactor should fix it

[jvsena42]

I'll polish Blocks and the other widgets in a stacked PR

iphone-16.mp4

iphone-se.mp4

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[pwltr]

Still doesn't have enough space imo. Also on the wide variant the text is truncated. I guess it is ok for now if it only affects iPhone SE.