Stop Thunder from deleting quotes on QuotedTweetDeleteEvent

[Pitchfork-and-Torch]

Bug

QuotedTweetDeleteEvent is a quote-card update. The quoting post still exists. Thunder treated quoting_tweet_id as a TweetDelete and removed the quote from the in-network store.

TweetDeleteEvent already removes the tweet that was actually deleted (the original, or a quote the author deleted).

Proof

• Entry: thunder/kafka/tweet_events_listener.rs (feeder InNetworkEvent deletes)
• Sink: PostStore.mark_as_deleted -> GetInNetworkPosts
• Break: QuotedTweetDeleteEvent used quoting_tweet_id as a delete
• Viewer effect: a followee quote vanished from Following / For You in-network when the quoted original was deleted
• Twin: TweetDeleteEvent already deletes the real tweet; QuotedTweetTakedownEvent was already ignored

Fix

Ignore QuotedTweetDeleteEvent for in-network deletes. Keep TweetDeleteEvent retention as-is.

Tests

Standalone decision table (same predicate): 4/4 passed.

• TweetDelete within retention still deletes that tweet
• TweetDelete past retention stays ignored
• QuotedTweetDelete does not delete the quoting post
• QuotedTweetTakedown still does not delete

cargo test cannot run. Public dump has no Thunder Cargo.toml.

Notes

Not TES id wipe (#94). Not QuoteHydrator (#117/#118). Not VF quote scoring (#115/#119).