feat: Reddit thread/subreddit archival

[Snider]

Summary

Collect Reddit threads and subreddit content for community context archival.

Use Case

Dead crypto projects often have subreddits with valuable community discussion and announcements.

Commands

# Single thread
borg collect reddit thread https://reddit.com/r/Monero/comments/abc123

# Subreddit top posts
borg collect reddit subreddit r/Masari --limit 100 --sort top

# User posts
borg collect reddit user u/fluffypony

API Options

1. Reddit API (requires auth)
2. old.reddit.com scraping
3. Pushshift archive API

Output

reddit/
├── r-Masari/
│   ├── posts/
│   │   ├── abc123.md
│   │   └── def456.md
│   ├── comments/
│   └── INDEX.json

Challenges

• API rate limits
• Deleted content (use Pushshift)
• Media embeds

Acceptance Criteria

• Collect single thread with comments
• Collect subreddit top/new posts
• Include comment threads
• Handle deleted content via Pushshift
• Markdown output format

[google-labs-jules]

Jules is on it. When finished, you will see another comment and be able to review a PR.

[google-labs-jules]

Ready for a review! A PR has been created.