Content submission: require Professional+ membership before allowing propose_content

[geneticallymodifiedfoodforthought]

Summary

Content submission (Perspectives / propose_content) is a membership benefit. Currently there is no enforcement that the submitting user is an active AAO member at the required tier. A non-member (or free-tier user) can submit content that lands in the editorial review queue — creating friction for reviewers and potentially publishing content from ineligible contributors.

Proposed change

Add a Professional+ membership check to the content submission flow, covering both the Addie tool path and any UI submission path:

1. Backend guard on propose_content — before accepting a submission, verify the authenticated user belongs to an organization with an active Professional, Corporate, or Founding subscription (or holds an active Professional+ individual membership). This is the authoritative check. Free/Explorer tier users are not eligible.

2. Addie pre-check — when Addie is helping a user draft or submit content, check membership tier before calling propose_content. If the user is not at Professional+, return a clear, friendly message explaining:

   • Content submission is a Professional+ membership benefit
   • How to upgrade (link to agenticadvertising.org/dashboard/membership)
   • That they're welcome to submit once they've upgraded

3. UI path — surface the same tier check at the point of submission (not just at publish time), so ineligible users get early feedback.

Suggested messaging (ineligible path)

"Publishing perspectives is a benefit of Professional-tier membership and above. To submit content, you'll need to upgrade your membership — you can do that at agenticadvertising.org/dashboard/membership. We'd love to have your perspective once you're on the right plan!"

Files likely affected

• server/ — propose_content tool handler (add tier guard: Professional, Corporate, Founding)
• Addie prompt / propose_content tool description — document the Professional+ requirement so Addie checks tier before calling
• Any UI-side submission form

Notes

• Co-author rule: at least one author must hold an active Professional+ membership. Guest co-authors on a qualifying member's submission are acceptable.
• Tier definition: Professional, Corporate, and Founding tiers qualify. Explorer and free/anonymous do not.
• The tier check should reuse the same subscription-status logic already in use for certification tier gating — no new auth surface needed.