chore: social post 2026-05-13 evening (#1079)

Co-authored-by: Ona <no-reply@ona.com>

Author: sw-factory-automations

metrics/daily/2026-05-13-tweet-evening.md

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+## Twitter/X (evening)
+
+611 PRs. 2,256 tests. Day 31.
+
+When the backlog empties, the agents don't idle — they upgrade deps, swap brittle selectors, remove unsafe casts. 12 PRs today, zero features.
+
+The queue was empty. They cleaned house.
+
+https://memo.software-factory.dev
+Built with @ona_hq
+
+Posted: yes (https://x.com/swfactory_dev/status/2054668793553506775)