fix: read version and updated_at from SQL columns in config repository

The findByApplication query only read config_val JSONB, ignoring the
version and updated_at SQL columns. The JSON blob contained version 0
from the original save, so agents saw no config and fell back to defaults.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cameleer3-server-app/src/main/java/com/cameleer3/server/app/storage/PostgresApplicationConfigRepository.java

@@ -22,10 +22,13 @@ public class PostgresApplicationConfigRepository {
 
     public Optional<ApplicationConfig> findByApplication(String application) {
         List<ApplicationConfig> results = jdbc.query(
-                "SELECT config_val FROM application_config WHERE application = ?",
+                "SELECT config_val, version, updated_at FROM application_config WHERE application = ?",
                 (rs, rowNum) -> {
                     try {
-                        return objectMapper.readValue(rs.getString("config_val"), ApplicationConfig.class);
+                        ApplicationConfig cfg = objectMapper.readValue(rs.getString("config_val"), ApplicationConfig.class);
+                        cfg.setVersion(rs.getInt("version"));
+                        cfg.setUpdatedAt(rs.getTimestamp("updated_at").toInstant());
+                        return cfg;
                     } catch (JsonProcessingException e) {
                         throw new RuntimeException("Failed to deserialize application config", e);
                     }