[Agent] feat(SaveSystem): third-party emulator detection & migration guide

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Summary

• KnownEmulator enum — new type in PVPrimitives modelling Delta, RetroArch, Manic Emu, PPSSPP, and Gamma with display name, bundle ID, URL scheme, save extensions, system summary, and a @MainActor isInstalled detection helper via UIApplication.canOpenURL.
• ExternalEmulatorMigrationView — SwiftUI settings screen under Settings → Library → "Import from Another Emulator". Detects installed emulators and shows tailored step-by-step export guides. Falls back to a "no emulators detected" state listing all options. Includes a ManualFileImportGuideView for Files.app / web-server imports.
• LSApplicationQueriesSchemes — all iOS and tvOS Info.plist variants now include delta, retroarch, and ppsspp so canOpenURL works at runtime.
• What's New — added 3.9.2 entry in whats-new.json.
• Changelog — .changelog/3556.md fragment added.

How detection works

iOS sandboxing prevents direct file access to other apps' containers. This PR uses URL scheme probing (UIApplication.canOpenURL("delta://")) which requires the schemes to be pre-declared in LSApplicationQueriesSchemes. The result is a guidance-only feature — all file transfer remains manual via the other app's share sheet → Files.app → Provenance.

Test plan

• Build and run on iOS Simulator — "Import from Another Emulator" row appears in Settings → Library
• On a device with Delta installed, row should say "Detected Emulators: Delta"; tap opens the Delta guide
• On a device with no recognised emulators, empty state shows with links to all five guides
• Each guide sheet shows numbered steps and the correct save-file extension note
• "Manual Import" flow navigates to ManualFileImportGuideView
• tvOS build compiles (no canOpenURL / detection called on tvOS — isInstalled always returns false)
• swiftlint lint passes on changed Swift files

Part of #3551

🤖 Generated with Claude Code

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PR created. AI review starting automatically.

[JoeMatt]

@claude self review this, be thorough, fix all issues
blocking pr merged

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🤔 Working on Request

Progress

• 🚀 Agent started
• 📖 Reading context...
• 🔨 Working...
• 📤 Done

Started: 2026-03-28 09:39 UTC

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Self-Review Complete — 7 Issues Fixed

Thorough review found and fixed the following:

Critical

1. Duplicate KnownEmulator type — PVPrimitives/KnownEmulator.swift was redundant; PVLibrary already defines a more complete KnownEmulator (with Codable, deltaLite case, exportDeepLinkURL, and proper UIApplication.canOpenURL instead of a fragile NSClassFromString hack). Deleted the PVPrimitives copy; migration view now imports PVLibrary.

2. private RetroTheme shadowing the real one — Lines 592–595 defined private enum RetroTheme { static var retroBackground: Color { Color.black } } which silently hid public struct RetroTheme from PVUIBase, replacing the retro grid background with a flat black Color. Deleted the shadow; added import PVUIBase.

Correctness

3. Wrong emulator name — "Manic Emu" → "Mantic Emu" throughout (the bundle ID is com.manticstudios.ManticEmu).

4. Missing .deltaLite case — All switch statements in the migration guide now handle .deltaLite (same export steps as .delta, same app). The "all cases" list in the empty-state section filters .deltaLite to avoid showing a duplicate Delta entry.

Code Quality

5. UI properties added as PVUI extensions — symbolName, systemSummary, and installedEmulators are now private extensions on KnownEmulator in the migration view file, keeping display concerns out of PVLibrary.

6. edgesIgnoringSafeArea → ignoresSafeArea() — deprecated modifier replaced.

7. manualImportSection Button+NavigationLink overlay hack — replaced with a plain NavigationLink.

[JoeMatt]

@claude self review this, be thorough, fix all issues

[github-actions]

✅ Self-review complete — fixes pushed

Issues found and fixed in ExternalEmulatorMigrationView.swift:

1. Removed unused import PVThemes — RetroTheme and all retro color extensions come from PVUIBase; PVThemes was never needed.

2. tvOS build fix: .navigationBarTitleDisplayMode(.inline) — This modifier is unavailable on tvOS. Added #if !os(tvOS) guards around all three occurrences (in ExternalEmulatorMigrationView, EmulatorMigrationGuideView, and ManualFileImportGuideView).

3. tvOS build fix: ToolbarItem(placement: .navigationBarTrailing) — .navigationBarTrailing is unavailable on tvOS. Wrapped in the same #if !os(tvOS) block as the display mode modifier in EmulatorMigrationGuideView.

The rest of the PR is clean: correct @MainActor usage, proper Identifiable retroactive conformance scoped to the UI layer, correct KnownEmulator URL-scheme detection, and consistent guard patterns.

[JoeMatt]

@claude self review this, be thorough, fix all issues

[github-actions]

✅ Self-review complete — 3 issues fixed:

1. @retroactive on KnownEmulator: Identifiable — KnownEmulator is defined in PVLibrary and Identifiable is from Foundation/SwiftUI, so the conformance added in PVUI is retroactive. Added @retroactive to match the pattern used elsewhere in the codebase (e.g. extension URL: @retroactive Identifiable in FreeROMsView.swift).

2. Typo in whats-new.json — "Manic Emu" → "Mantic Emu" on line 700. The Swift files all correctly said "Mantic"; only the What's New JSON had the typo.

3. ProvenanceTV-Lite-Info.plist parity — ProvenanceTV-AppStore-Info.plist was updated with delta, ppsspp, and retroarch URL schemes but ProvenanceTV-Lite-Info.plist was not. Added the same LSApplicationQueriesSchemes block for consistency across all tvOS Info.plist variants.

Everything else reviewed and looks correct:

• Import chain (PVLibrary → KnownEmulator, PVUIBase → RetroTheme) is valid per Package.swift dependencies.
• @MainActor usage on isInstalled and loadInstalledEmulators() is consistent and correct.
• All tvOS-incompatible APIs correctly guarded with #if !os(tvOS).
• The gamma/manticEmu URL schemes intentionally absent from plists since KnownEmulator.urlScheme returns nil for both (pending confirmation per TODO comment).

[JoeMatt]

@claude self review this, be thorough, fix all issues

[github-actions]

Self-Review — 3 fixes applied

Fixed

1. tvOS focus handling missing on ExternalEmulatorMigrationView
Every other settings subpage (AppearanceView, CoreProjectsView, BackupRestoreView, etc.) calls .focusSection(), .onExitCommand { dismiss() }, and .settingsSubpageTracking(). The migration view was missing all three — without them, the tvOS focus engine can escape the subpage and the parent can't track push state for the nav bar.

2. ManualFileImportGuideView — same issue + missing @Environment(\.dismiss)
No dismiss environment var and no tvOS focus modifiers. Without @Environment(\.dismiss), calling dismiss() in onExitCommand would have crashed on tvOS.

3. Deprecated .foregroundColor() → .foregroundStyle()
All 34 calls in the file replaced. foregroundColor is deprecated in SwiftUI for iOS 17+ targets; this project targets iOS 17+ minimum.

Not Changed

• .cornerRadius() — deprecated but used throughout the entire codebase; fixing in isolation would be inconsistent noise
• KnownEmulator model, plists, whats-new.json, changelog — all reviewed, no issues found

[JoeMatt]

@claude self review this, be thorough, fix all issues

[github-actions]

Self-Review Complete — 2 fixes pushed

Issues Found and Fixed

1. EmulatorMigrationGuideView missing tvOS dismiss block

Every other settings sub-page (AppearanceView, ManualFileImportGuideView, CloudSyncSettingsView, etc.) ends with:

#if os(tvOS)
.focusSection()
.onExitCommand { dismiss() }
#endif

EmulatorMigrationGuideView was missing this entirely — tvOS users had no explicit exit path from the guide sheet. Fixed.

2. Duplicate "Delta" rows when Delta/Delta Lite is installed

Both delta and deltaLite declare urlScheme = "delta", so UIApplication.canOpenURL("delta://") returns true for both when either app is installed. The empty-state full list already filtered .deltaLite (with a comment), but installedEmulators did not — users would see two "Delta" rows. Fixed installedEmulators to filter { $0 != .deltaLite && $0.isInstalled }, consistent with the empty-state list.

No Other Issues Found

• @retroactive Identifiable conformance is correct (type from external module PVLibrary, conformance declared in PVUI)
• Imports (PVLibrary, PVUIBase) are real declared dependencies of PVSwiftUI target
• RetroTheme, .retroBlue/Purple/Pink, .settingsSubpageTracking all resolve from PVUIBase
• KnownEmulator unit tests in SaveBundleManifestV2Tests unaffected (changes are in the UI extension, not the model)
• whats-new.json 3.9.2 entry uses valid SF Symbol names and approved named colors
• All #if os(tvOS) / #if !os(tvOS) guards are correct across all three sub-views

[JoeMatt]

@claude self review this, be thorough, fix all issues

[github-actions]

Self-Review Complete

Reviewed all 11 changed files thoroughly. Three fixes applied:

Issues Fixed

1. Changelog fragment named after issue instead of PR

• .changelog/3556.md → .changelog/3571.md
• The automated changelog consolidation script keys on the PR number (filename); using the issue number would produce a broken link in CHANGELOG.md.

2. loadInstalledEmulators() called with await but wasn't async

• Added async to the function signature
• Calling a non-async @MainActor function with await generates a Swift compiler warning ("No 'async' operations occur within 'await' expression") in Swift 5.10/Xcode 16 strict concurrency mode.

3. saveFormatNote only showed battery-save extensions, inconsistent with export steps

• Delta's export steps explicitly ask users to find .dvsave state files, but the info box only listed .dsv/.sav/.srm.
• PPSSPP's export steps ask users to copy .ppst files, but the info box only listed .sav.
• Renamed section title to "Save & State Extensions", split into two lines ("Battery saves:" / "Save states:"), keeping the existing RetroArch special-case unchanged.

Confirmed Correct (no changes needed)

• All 7 Info.plist variants updated with delta, ppsspp, retroarch URL schemes ✅
• @retroactive Identifiable conformance is correct syntax for Swift 5.7+ retroactive conformances ✅
• PVUIBase import provides RetroTheme, Color.retroBlue/retroPurple/retroPink ✅
• settingsSubpageTracking() is internal to PVSwiftUI module — accessible from ExternalEmulatorMigrationView ✅
• EmulatorMigrationGuideView presented as a .sheet (correct — has its own NavigationStack) ✅
• ManualFileImportGuideView uses NavigationLink push within settings nav stack ✅
• tvOS #if !os(tvOS) guards on DragGesture-adjacent APIs not used; .focusSection() + .onExitCommand guards are correct ✅
• KnownEmulator.installedEmulators filter correctly excludes .deltaLite (same URL scheme + steps as .delta) ✅
• whats-new.json entry added under a distinct version 3.9.2 ✅

[JoeMatt]

@claude self review this, be thorough, fix all issues make sure tvos uses caches not docs

[github-actions]

✅ Self-review fixes pushed — tvOS now uses Web Server copy (not Files.app), spurious URL schemes removed from tvOS plists