Align iOS settings with Android and prepare build 44

[denuoweb]

What

• mirror Android's canonical seven-section settings structure and platform-compatible actions on iOS
• add Handshake network switching, relay-peer management, header resync, persisted browser-data controls, and structured diagnostics
• make network changes transactional so a failed replacement preserves the working runtime
• prepare App Store version 0.5.0 build 44 and align listing/privacy metadata
• reuse the TestFlight gate's built framework for an optional fresh live screenshot capture

Why

The previous iOS menu was incomplete and its diagnostic actions were placeholders. A failed network switch could also discard the active runtime. Build 44 needs the Android-aligned menu, truthful App Store metadata, and a nonredundant release path.

Impact

• iOS and ios-ffi only; Android packaging is intentionally not selected
• the iOS donation row is omitted because App Store developer tipping must use In-App Purchase
• fresh settings screenshots and the updated live privacy page remain pre-review tasks, not binary-upload blockers

Root cause

The iOS shell had only a subset of Android's settings contract, lacked FFI adapters for several runtime actions, and replaced the active network runtime before its successor was ready.

Checks

• ./scripts/check-version-consistency.sh
• python3 dist/app-store/validate.py
• ./scripts/check-runtime-boundaries.sh
• ./scripts/check-ios-abi.sh (11/11 tests plus C/C++ header and symbol checks)
• ./scripts/verify-supply-chain.sh
• python3 ./scripts/generate-third-party-notices.py --check
• CI/screenshot Python suites (36 tests)
• Rust formatting and git diff --check
• CI classifier: rust=true android=false ios=true

The macOS Xcode gate remains the authoritative Swift compiler, XCTest, device-link, archive, and upload verification.