feat: add remote folder picker to file sync GUI

[ethanndickson]

Closes #65.

pickerexample_small.mp4

pickerstresstest.mov

[ethanndickson]

• chore: add file sync daemon tests #129
• feat: add remote folder picker to file sync GUI #127 👈 (View in Graphite)
• main

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[Copilot]

Pull Request Overview

This PR adds a remote folder picker to the file sync GUI by integrating new API endpoints and views to enable users to select remote directories.

• Adds Sendable conformance to the Client model and implements methods for listing agent directories in AgentLS.swift.
• Introduces a FilePicker view, its associated model, and test cases to validate file picking logic.
• Updates the FileSync session modal to include a remote folder picker button alongside an enhanced UI.

Reviewed Changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Coder-Desktop/CoderSDK/Client.swift	Added Sendable conformance to improve thread-safety.
Coder-Desktop/CoderSDK/AgentLS.swift	Introduced LS request/response models and a new directory listing function.
Coder-Desktop/Coder-DesktopTests/Util.swift	Added the eventually helper function for async testing.
Coder-Desktop/Coder-DesktopTests/FilePickerTests.swift	Added tests for error handling, file loading, and directory expansion in the file picker.
Coder-Desktop/Coder-Desktop/Views/FileSync/FileSyncSessionModal.swift	Updated the file sync session modal UI to include remote folder picking capability.
Coder-Desktop/Coder-Desktop/Views/FileSync/FilePicker.swift	Implemented the FilePicker view, its model, and helper extensions to support file selection.

Files not reviewed (1)

• Coder-Desktop/Coder-Desktop/Info.plist: Language not supported

Comments suppressed due to low confidence (3)

Coder-Desktop/CoderSDK/AgentLS.swift:31

• [nitpick] Consider renaming 'absolute_path' to 'absolutePath' to follow Swift naming conventions; if these property names are tied to API keys, consider using CodingKeys for mapping.

public let absolute_path: [String]

Coder-Desktop/Coder-Desktop/Views/FileSync/FileSyncSessionModal.swift:16

• [nitpick] Consider renaming 'pickingRemote' to 'isPickingRemote' to improve clarity and better align with SwiftUI naming conventions.

@State private var pickingRemote: Bool = false

Coder-Desktop/Coder-Desktop/Views/FileSync/FilePicker.swift:203

• [nitpick] Consider renaming the parameter 'dir' to 'isDirectory' to enhance readability and clarity.

dir: Bool = false

[ethanndickson]

Merge activity

• Apr 9, 6:01 AM EDT: A user started a stack merge that includes this pull request via Graphite.
• Apr 9, 6:01 AM EDT: A user merged this pull request with Graphite.