Startup route logic (reopen last project)

[kirich1409]

Summary

• AppDelegate now lazily builds the root TCA Store with a computed initial route instead of hardcoding .welcome.
• When SettingsStore.reopenLastProject is on and ProjectRepository has a recent project, the app opens in .main and auto-sends .openProject(url); otherwise it shows Welcome.
• Pure decision logic extracted into StartupRouteResolver so the three branches are unit-testable without SwiftData/UIKit.

Files

• MacApp/Relay/StartupRouteResolver.swift — new pure resolver (StartupDecision + resolve(reopenLastProject:latestProjectPath:)).
• MacApp/Relay/AppDelegate.swift — store becomes lazy var; resolver output determines AppFeature.State.Route; pending URL dispatched in applicationDidFinishLaunching.
• MacApp/RelayTests/StartupRouteResolverTests.swift — 5 cases covering the 3 required scenarios plus two edge cases (empty-string path, false+empty).

Test plan

• swiftlint lint --strict — 0 violations (148 files)
• xcodebuild build — BUILD SUCCEEDED
• xcodebuild test -only-testing:RelayTests — 22/22 unit tests pass (including 5 new StartupRouteResolverTests)
• Pre-existing RelayUITests failures are unrelated — they also fail on main (verified by reverting the change and re-running testOpenTerminal_newTab)

Closes #148

[Copilot]

Pull request overview

Implements “reopen last project” startup routing by deriving the initial AppFeature.State.Route from settings + persisted recent-project data, and extracting the branching logic into a pure, unit-testable resolver.

Changes:

• Added StartupRouteResolver/StartupDecision to compute whether startup should show Welcome or reopen the last project.
• Made AppDelegate build the root TCA store lazily with a computed initial route and (optionally) send an .openProject(url) on launch.
• Added unit tests covering the resolver’s decision branches and edge cases.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
MacApp/Relay/StartupRouteResolver.swift	Introduces pure resolver that maps (reopenLastProject, latestProjectPath) to a startup decision.
MacApp/Relay/AppDelegate.swift	Switches store initialization to lazy var, computes initial route, and attempts to dispatch pending .openProject.
MacApp/RelayTests/StartupRouteResolverTests.swift	Adds unit coverage for resolver behavior across main scenarios and edge cases.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.