fix(social-auth): restore Instagram OAuth scopes for pages, insights and comments

[dvlexp]

Problem

The Instagram OAuth flow was using a legacy scope set (instagram_basic, instagram_content_publish, publish_video) that is no longer accepted by the Meta app review process for the Graph API v18+. This caused the OAuth authorization to fail for analytics and engagement tracking features.

Solution

Replace the legacy scope set with the Meta Graph v18+ recommended permissions:

Old scope	New scope
instagram_basic	pages_show_list
instagram_manage_insights	pages_read_engagement
pages_show_list	instagram_manage_insights
instagram_content_publish	instagram_manage_comments
publish_video	(removed — not needed for analytics)

Files Changed

• social-auth/auth/instagram.py — single-line scope string update

Test Plan

• Trigger the Instagram OAuth flow via make social-auth
• Authorize the app — no "invalid scope" error from Meta
• Verify analytics endpoints (/me/media, /me/insights) return data after authorization

Summary by Sourcery

Update Instagram OAuth scope set to align with Meta Graph API v18+ requirements for analytics and engagement features.

Bug Fixes:

• Fix Instagram OAuth authorization failures caused by deprecated or invalid scopes.

Enhancements:

• Adjust requested Instagram permissions to the minimal set needed for pages listing, insights, and comment management.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Updates the Instagram OAuth connection flow to request the new, Meta Graph v18+–compliant set of permissions so that analytics and engagement tracking continue to work without scope errors.

Sequence diagram for updated Instagram OAuth scope usage

sequenceDiagram
    actor User
    participant AppBackend as AppBackend(connect)
    participant InstagramOAuth as Instagram_OAuth_Server

    User->>AppBackend: GET /auth/instagram/connect
    AppBackend->>AppBackend: connect()
    AppBackend->>AppBackend: _callback_url()
    AppBackend->>AppBackend: urlencode(scope="pages_show_list,pages_read_engagement,instagram_manage_insights,instagram_manage_comments")
    AppBackend-->>User: 302 Location: https://www.facebook.com/v18.0/dialog/oauth?...
    User->>InstagramOAuth: Open authorization URL with new scopes
    InstagramOAuth-->>User: Consent screen for pages and insights permissions
    User-->>InstagramOAuth: Approve requested scopes
    InstagramOAuth-->>User: Redirect to callback_url with code and state
    User->>AppBackend: GET callback_url?code=...&state=...

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File-Level Changes

Change	Details	Files
Update Instagram OAuth scope string to use Meta Graph v18+–approved permissions.	Replace legacy Instagram scopes with the new combination of page and Instagram permissions required for analytics and engagement features. Remove the deprecated publish_video permission from the requested scope set, since it is not needed for analytics.	social-auth/auth/instagram.py

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[sourcery-ai]

Hey - I've left some high level feedback:

• Consider extracting the scope list into a named constant (or helper) so future Meta permission changes can be updated in one place and better documented in code.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Consider extracting the scope list into a named constant (or helper) so future Meta permission changes can be updated in one place and better documented in code.

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