feat(web): default to applications and split control center routing

[arielshad]

Summary

• Root / now redirects to /applications so users land on the apps grid first instead of the control center canvas
• Control center canvas moved to its own /control-center route (sidebar, drawer-close, pane-click, and tests updated)
• Restored the original onboarding empty state in control center (agent setup wizard → tool checklist → Choose Folder / New Project / Import from GitHub), the prompt-style empty state stays scoped to the applications view
• Added Opus 4.7 model metadata so the welcome wizard model picker shows "Opus 4.7" with a description (was rendering "Opus 4 7" via fallback prettifier)
• Ungated GitHubImportDialog in app-shell so the new Import-from-GitHub button actually opens the dialog (the dialog was conditionally mounted behind featureFlags.githubImport)
• Defensive .catch() on checkAgentAuth / checkToolStatus so a failed server action degrades to "Not installed" instead of perpetual "Checking…"

Test plan

• pnpm dev:web → navigate to / → verify redirect to /applications
• Navigate to /control-center → verify canvas + onboarding empty state with three buttons (Choose Folder, New Project, Import from GitHub)
• Click Import from GitHub → verify the GitHub import dialog opens
• Open the welcome wizard model picker → verify all four Claude models render with display names + descriptions (Opus 4.7, Opus 4.6, Sonnet 4.6, Haiku 4.5)
• Open a feature drawer, close it → verify routes back to /control-center
• Sidebar Control Center item is active when on /control-center and not active on /applications
• pnpm test:unit passes
• pnpm typecheck passes

🤖 Generated with Claude Code

[github-actions]

Dev Release Published

Artifact	Version	Install
npm	1.193.0-pr577.1d8a0ed	npm install -g @shepai/cli@1.193.0-pr577.1d8a0ed

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_{Published from commit afb387b | View CI}