fix: address Hacker News feedback (connection banner, API keys, etc.) and bump version to v0.3.0

Former-commit-id: db1722a99e3ea7fd8afb296f186f57799bf4b695

.git_backup/objects/c1/87027ddeec884723e3e493ce774cb247180835

@@ -0,0 +1,8 @@
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