Add Full Disk Access guide image to onboarding

[kodjima33]

Summary

• Add full_disk_access.png guide image to Resources
• Map "Grant Full Disk Access" button to show the guide image
• Add full_disk_access case to OnboardingPermissionImage

🤖 Generated with Claude Code

[greptile-apps]

Greptile Summary

This PR completes the onboarding guide image coverage for the "Full Disk Access" macOS permission by adding a full_disk_access.png resource image, mapping the "Grant Full Disk Access" (and "Grant Disk Access") button labels to the full_disk_access permission type, and adding the corresponding case to OnboardingPermissionImage. The permission type itself (full_disk_access) was already fully wired into ChatToolExecutor, ChatPrompts, and the permission-status polling logic — this change closes the gap where the guide image was missing.

Key changes:

• Added full_disk_access.png to desktop/Desktop/Sources/Resources/ alongside existing permission guide images
• Mapped "full disk access" and "disk access" button label suffixes to "full_disk_access" in permissionType(from:)
• Added case "full_disk_access" to OnboardingPermissionImage.resourceInfo returning the new PNG asset

Confidence Score: 5/5

• This PR is safe to merge — it is a small, additive change that follows existing patterns exactly.
• The change is minimal: one new image asset and two small additions to an existing switch/dictionary in Swift. The full_disk_access permission type was already fully supported throughout the codebase (ChatToolExecutor, ChatPrompts, AppState, permission polling) — this only adds the previously missing guide image display. No logic changes, no regressions possible.
• No files require special attention.

Important Files Changed

Filename	Overview
desktop/Desktop/Sources/OnboardingChatView.swift	Adds two entries to the permission button label mapping and one case to OnboardingPermissionImage; changes are minimal, consistent with existing patterns, and integrate cleanly with existing full_disk_access handling throughout the file.
desktop/Desktop/Sources/Resources/full_disk_access.png	New binary PNG asset added to the Resources directory alongside existing permission guide images (folder_access.png, microphone-settings.png, etc.); filename matches the resource name referenced in code.

Sequence Diagram

sequenceDiagram
    participant AI as AI / ChatProvider
    participant View as OnboardingChatView
    participant Image as OnboardingPermissionImage
    participant Exec as ChatToolExecutor
    participant OS as macOS System Settings

    AI->>View: quickReplyOptions = ["Grant Full Disk Access"]
    View->>Image: permissionType("Grant Full Disk Access") → "full_disk_access"
    Image-->>View: full_disk_access.png (guide image displayed)
    View->>View: User taps "Grant Full Disk Access"
    View->>Exec: request_permission(type: "full_disk_access")
    Exec->>OS: NSWorkspace.open(Privacy_AllFiles URL)
    OS-->>View: (pending — user toggles in System Settings)
    View->>View: 1s timer detects hasFullDiskAccess = true
    View->>AI: "Grant Full Disk Access — done!"

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_{Last reviewed commit: "Add Full Disk Access..."}