perf(ci): reduce test redundancy from 4x to 1x per release

- Remove tests from pre-commit hook (keep typecheck+lint only)
- Remove build+validate from prepublishOnly/prepack (CI handles it)
- Add HUSKY=0 to CI commit step to skip hooks

Before: 4 test runs per release (pre-commit, CI validate, prepublishOnly, prepack)
After: 1 test run (CI validate only)

.husky/pre-commit

@@ -1,7 +1,8 @@
-# Run validation before commit (typecheck + lint + format + tests)
-bun run validate
+# Run quick checks before commit (typecheck + lint + format only)
+# Tests are run by CI - no need to duplicate locally
+bun run typecheck && bun run lint:fix && bun run format:check
 
-# Validate UI if changes detected
+# Validate UI if changes detected (typecheck + lint only)
 if git diff --cached --name-only | grep -q "^ui/"; then
   echo "[i] UI changes detected, running ui:validate..."
   bun run ui:validate