Release build cannot find gh/glab — PATH not resolved from login shell

[dgershman]

Problem

When Crow is launched as a .app bundle from Finder/Dock, issues don't load. Running with PATH=$PATH ./Crow.app/Contents/MacOS/CrowApp works, confirming the issue is PATH resolution.

macOS gives .app bundles a minimal PATH (/usr/bin:/bin:/usr/sbin:/sbin). Tools installed via Homebrew (e.g. gh at /opt/homebrew/bin) are not found by /usr/bin/env. This does not affect make debug / swift run since those inherit the terminal's full environment.

Root Cause

All subprocess execution in the app uses /usr/bin/env to find tools, but never resolves the user's login shell PATH. ProcessInfo.processInfo.environment only has the minimal Finder PATH.

Affected files

• Sources/Crow/App/IssueTracker.swift — shell() and shellWithStatus()
• Packages/CrowProvider/Sources/CrowProvider/ProviderManager.swift — shell() (also has conditional env bug)
• Packages/CrowGit/Sources/CrowGit/GitManager.swift — run() (never sets environment at all)
• Sources/Crow/App/AppDelegate.swift — dependency check uses /usr/bin/which with same minimal PATH

Proposed Fix

Add a ShellEnvironment singleton in CrowCore that:

1. On first access, runs the user's login shell (zsh -lc 'echo $PATH') to get the real PATH
2. Falls back to appending /opt/homebrew/bin, /usr/local/bin if shell resolution fails
3. Provides ShellEnvironment.shared.env for all Process calls
4. Provides ShellEnvironment.shared.hasCommand(_:) for tool detection

Then update all 4 files to use the enriched environment.

Reproduction

1. make release
2. Launch Crow.app from Finder (not terminal)
3. Issues panel is empty
4. Workaround: PATH=$PATH ./Crow.app/Contents/MacOS/CrowApp — issues load