Analytics controls: toggle, clear data, CSV export

[ShantKhatri]

Summary

Give card owners control over their own analytics data.

Contexts

Privacy-first feature: analytics is off/on per card, and owners can wipe or export their data at any time.

Tasks

• Per-card toggle to enable/disable analytics tracking
• "Clear all data" action with confirmation
• CSV export of raw aggregate data

Acceptance Criteria

• Toggling off stops new events from being recorded
• Clear data permanently removes card_view/platform_click rows for that card
• Export produces a valid CSV
• Tests added

Area

web

Difficulty

Good first issue

[github-actions]

Hi @ShantKhatri,

Thanks for opening this issue.

Please reply with one of the following areas so the issue can be routed to the appropriate team member:

- /backend
- /web
- /mobile
- /devops

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