Clean up project metadata and add smoke checks

[hanityx]

Summary

• Replace issue/PR templates with simpler public-facing forms.
• Remove stale preview/trust-note artifacts and consolidate provider docs.
• Add reusable smoke checks for Web, TUI, and packaged Desktop.

Verification

• pnpm test:ci
• pnpm test:provider
• pnpm test:desktop
• pnpm test:live
• pnpm test:smoke
• pnpm test:smoke:tui

Notes

• qa:* and smoke:* package scripts remain as compatibility aliases.
• Parallels GUI was not counted as release proof because the VM was locked and guest command execution was unavailable.