Add haptic feedback

[austin-smith]

What Changed

• added centralized SwiftUI-native haptic semantics and an iOS scene-level feedback host
• added immediate interaction and terminal outcome feedback across torrent, file, server, settings, navigation, and refresh actions
• added a user-facing haptic feedback preference with reset support
• exposed explicit refresh outcomes so failed, unavailable, cancelled, and stale refreshes cannot emit false success feedback
• added focused regression coverage for haptic mappings, refresh outcomes, app icon outcomes, and settings reset behavior

Why

BitDream's iOS interactions previously lacked consistent tactile feedback. Meaningful actions and asynchronous outcomes should feel responsive while failures, warnings, cancellations, and no-op refreshes remain semantically accurate.

Closes #123.

Validation

• iOS Debug build for generic device with code signing disabled
• macOS Debug build
• macOS test suite: 222 tests passed
• SwiftLint
• git diff --check

UI Changes

iOS interactions now provide light acknowledgement feedback for deliberate actions, selection feedback for discrete changes, and success, warning, or error feedback for terminal outcomes. A Haptic Feedback toggle is available in Settings.

[austin-smith]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Keep it up!

Reviewed commit: a4e7d8508c

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".