FIX: improve reset warning spacing and show actual expiry countdown

[merefield]

Why

Give the expiry hazard symbol more breathing room and make the Resets-page warning distinguish actual time remaining from the configured warning lead time.

Changes

• Add a second space after the hazard symbol in full and compact warnings across all 17 locales.
• Replace EXPIRING SOON // within 72 hours with a live countdown such as FIRST EXPIRATION IN 2D 4H // within 72 hours on the Resets page.
• Reuse the same countdown formatter for the top warning and the inventory notice; retain the configured lead time after //.
• Update translations and README guidance without changing redemption or confirmation behaviour.

Verification

• Full Go test suite and go vet ./....
• Targeted reset race tests.
• New countdown and spacing regressions, also run in all 17 locale subprocesses.
• Existing responsive warning/button hit-surface tests cover the wider labels.
• Local binary rebuilt for review.

[Copilot]

🟢 Approval recommended

No unresolved review issues were identified.

Pull request overview

Improves reset expiry warnings with live countdowns, better spacing, localized updates, and regression coverage.

Changes:

• Adds shared countdown formatting for reset warnings.
• Updates spacing and translations across supported locales.
• Updates documentation and localization tests.

File summaries

File	Summary
README.md	Documents updated warning behavior.
internal/ui/reset_warning_test.go	Tests countdown and spacing behavior.
internal/ui/quota_reset.go	Implements countdown rendering.
internal/ui/localisation_test.go	Tests behavior across locales.
internal/i18n/locales/zh-Hans.json	Updates localized warning text.
internal/i18n/locales/tr.json	Updates localized warning text.
internal/i18n/locales/sv.json	Updates localized warning text.
internal/i18n/locales/ru.json	Updates localized warning text.
internal/i18n/locales/pt-PT.json	Updates localized warning text.
internal/i18n/locales/pt-BR.json	Updates localized warning text.
internal/i18n/locales/nl.json	Updates localized warning text.
internal/i18n/locales/nb.json	Updates localized warning text.
internal/i18n/locales/ja.json	Updates localized warning text.
internal/i18n/locales/it.json	Updates localized warning text.
internal/i18n/locales/fr.json	Updates localized warning text.
internal/i18n/locales/fi.json	Updates localized warning text.
internal/i18n/locales/et.json	Updates localized warning text.
internal/i18n/locales/es.json	Updates localized warning text.
internal/i18n/locales/en-GB.json	Updates localized warning text.
internal/i18n/locales/de.json	Updates localized warning text.
internal/i18n/locales/da.json	Updates localized warning text.

Review details

• Files reviewed: 21/21 changed files
• Comments generated: 0
• Review effort level: Lite

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