feat(onboarding): prepare selected workspaces when creating AliceProjects

[luokerenx4]

New AliceProjects previously opened on another “Initialize Workspace” screen after creation. The TUI now offers Chat (selected by default), Auto Quant and Auto Prediction, then creates and starts the project. Scripted creation accepts --workspaces (including none) and records the same choices for first startup.

The owning backend prepares the selected durable workspaces before serving the UI, saves their canonical defaults, and checkpoints completed items. Interrupted attempts reuse existing workspaces; failed items remain retryable from Quick Start. No Agent Session is started by preparation. Existing homes without a request and project transfers retain their behavior.

The first-run guide also keeps credential dialogs above the guide, offers an explicit Pi provider connection for Chat, and binds the selected provider only when Chat has no existing runtime choice. Saving no longer races an automatic step transition against readiness. Packaged smoke uses isolated Pi state and local mock credentials.

Validation:

• Full hermetic suite: 736 files, 6606 passed, 3 skipped.
• Root, CLI, UI and desktop typechecks; complete desktop build.
• Real TUI PTY creation, workspace selection and startup; 80-column Foundry and shared pointer tests.
• Real isolated source project: Chat/Quant/Prediction prepared; first visit shows composer; no Sessions started. Interrupted checkpoint recovered through the UI Retry action.
• Isolated browser first-run: local mock test/save, Chat provider binding, readiness confirmation. Demo Quick Start and 390px layout inspected.
• Unsigned packaged Electron onboarding passed: Chat present before renderer, Pi ready via launcher-vault, broker step reached in lite mode.
• Prior dev installer smoke (d70432f) passed. git diff --check passed.

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Project	Deployment	Actions	Updated
openalice-demo	Building	Preview	Sep 6, 2026 5:04am UTC