Add Mixpanel analytics events for collection drafting workflow

[Sewer56]

Summary

This PR adds Mixpanel analytics events to track the collection drafting workflow in Vortex.

Changes

• Added 3 new Mixpanel events:
  • collection_drafted - Fired when a user creates a new collection draft
  • collection_draft_uploaded - Fired when a user uploads a new collection draft to Nexus Mods for the first time
  • collection_draft_updated - Fired when a user uploads an update to an existing collection

Testing

Prerequisites

1. Enable Telemetry

Telemetry must be enabled to test events:

1. Open Vortex
2. Go to Settings → Vortex
3. Check "Allow this app to collect usage data to improve your experience"
4. Ensure you're logged into Nexus Mods (required for analytics)

Note: Telemetry was off on my machine. Not sure if defaults to off in development builds. AFAIK a consent dialog appears on first login, but I don't remember it 😅

2. Check DNS/Network

Important: DNS blockers like AdGuard Home, Pi-hole, or browser extensions may block Mixpanel events.

Whitelist these domains:

• *.mixpanel.com
• *.mxpnl.com

That's what I had to do on my end; was caught offguard.

How to Trigger Each Event

collection_drafted

Fires when creating a new collection draft:

Creation Method	Steps
empty	Collections tab → "Create New Collection" → Choose empty → Name it
from_profile	Profiles tab → Select profile → "Create Collection from Profile"
quick_collection	Use Quick Collection feature → Select mods → Complete workflow

collection_draft_uploaded

Fires on first-time upload:

1. Create a collection (any method above)
2. Configure with mods/rules
3. Click Export to Nexus / Upload Collection
4. Must be a new collection (no collectionId)

collection_draft_updated

Fires when uploading an update:

1. Open previously uploaded collection
2. Make changes (add/remove mods, update rules)
3. Click Export to Nexus / Upload Collection
4. Collection must already have a collectionId

Verification

1. Run Vortex: yarn start
2. Open Mixpanel → switch to Nexus Mods - Development project (top-left)
3. Go to Events in sidebar
4. Trigger actions in Vortex
5. Verify events appear with correct properties

Files Modified

• src/extensions/analytics/mixpanel/MixpanelEvents.ts - New event classes
• extensions/collections/src/index.ts - Track empty collection
• extensions/collections/src/util/transformCollection.ts - Track profile/quick collections
• extensions/collections/src/collectionExport.ts - Track uploads/updates
• src/util/api.ts - Export new events
• etc/vortex_devel.api.md - API docs