Add support for oauth connectors

[gonengar]

Summary

Implements OAuth connectors management for the Base44 CLI, allowing users to connect external services (Slack, Google Calendar, etc.) via OAuth and track them in the project config.

Commands:

• base44 connectors add [type] - Initiate OAuth flow and connect an integration
• base44 connectors list - Show all connectors (local config vs backend status)
• base44 connectors push - Full sync: connect new, remove missing from config
• base44 connectors remove [type] - Disconnect an integration (--hard for permanent)

Key features:

• Connectors stored in config.jsonc under connectors property (not a separate file)
• Displays OAuth URL for manual browser opening (works in headless environments)
• Push performs full sync - adds missing connectors and removes ones not in config
• Space-separated commands matching existing CLI patterns (connectors add not connectors:add)

Example config:

{
  "name": "my-app",
  "connectors": {
    "slack": {},
    "googlecalendar": { "scopes": ["calendar.readonly"] }
  }
}

Supported integrations: Slack, Google Calendar, Google Drive, Gmail, Google Sheets, Google Docs, Google Slides, Notion, Salesforce, HubSpot, LinkedIn, TikTok

[github-actions]

🚀 Package Preview Available!

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Install this PR's preview build with npm:

npm i @base44-preview/cli@0.0.17-pr.104.e7dd3a1

Prefer not to change any import paths? Install using npm alias so your code still imports base44:

npm i "base44@npm:@base44-preview/cli@0.0.17-pr.104.e7dd3a1"

Or add it to your package.json dependencies:

{
  "dependencies": {
    "base44": "npm:@base44-preview/cli@0.0.17-pr.104.e7dd3a1"
  }
}

• 📦 Preview Package: @base44-preview/cli@0.0.17-pr.104.e7dd3a1
• 🔗 View this commit on GitHub

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_{Preview published to npm registry — try new features instantly!}

[claude]

Code review

No issues found. Checked for bugs and CLAUDE.md compliance.