Kozou v1.12.3

What's Changed

• fix: onramp polish — scaffold env/migration consistency + actionable MCP arg errors by @takashi-matsuyama in #201
• fix(core): show the table name (not its COMMENT) as the dashboard title by @takashi-matsuyama in #202
• release: v1.12.3 — dashboard table title fix + cold-start onramp polish by @takashi-matsuyama in #203

Full Changelog: v1.12.2...v1.12.3