feat(kvb-release): release brief method with article and post channels

kvb-release listens once, writes one brief since the previous tag and hands each channel its slice; kvb-release-article writes the long form and kvb-release-post the short posts, each listening before it brainstorms. A project's own release skill sets file names, title and post structure, and an empty channel list means every channel the project covers. kvb-release-changelog moves its lint steps into lint.md.

🎯 Fix: 92 %
💥 Break: 3 %
💸 Cost: 279 %
⏱️ Time: 100 %
🛡️ Security: 100 %
🏆 Score: 32
🚦 Gate: ⚠️ cost 279 % > 100: operator approved the commit

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_naming.py

@@ -17,6 +17,7 @@ UNCATEGORIZED = frozenset(
         "kvb-dream",
         "kvb-help",
         "kvb-optimize",
+        "kvb-release",
         "kvb-transcend",
     }
 )