feat(core): split foundational capabilities into dedicated crates

agents/common/src/main/java/com/dbx/agent/EwkbWktDecoder.java

@@ -7,7 +7,7 @@ import java.util.List;
 /**
  * Decode PostGIS EWKB / WKB byte streams (and PGgeometry / hex strings) into
  * OGC Well-Known Text. Behaves identically to the Rust implementation in
- * {@code crates/dbx-core/src/db/postgres.rs::ewkb_to_wkt}, including the
+ * {@code crates/dbx-drivers/src/db/postgres.rs::ewkb_to_wkt}, including the
  * {@code Z} / {@code M} / {@code ZM} dimension suffixes and {@code EMPTY}
  * geometries. Used by the JDBC agent layer so that PostgresLike databases
  * such as HighGo / KingBase / Vastbase / openGauss / GaussDB return WKT for

agents/common/src/main/java/com/dbx/agent/PostgresLikeAgent.java

@@ -79,7 +79,7 @@ public abstract class PostgresLikeAgent extends AbstractJdbcAgent {
     /**
      * Wrap {@link AbstractJdbcAgent#resultValue} so PostGIS-style {@code geometry}
      * and {@code geography} columns are decoded into WKT (matching the native
-     * tokio_postgres path in {@code crates/dbx-core/src/db/postgres.rs}).
+     * tokio_postgres path in {@code crates/dbx-drivers/src/db/postgres.rs}).
      */
     private JdbcExecutor.ColumnAwareResultValueReader geometryAwareResolver() {
         return (rs, index, sqlType, columnTypeName) -> {

agents/common/src/test/java/com/dbx/agent/EwkbWktDecoderTest.java

@@ -22,7 +22,7 @@ class EwkbWktDecoderTest {
 
     // ──────────────────────────────────────────────────────────────────────
     // Cross-checked against the Rust ewkb_to_wkt tests in
-    // crates/dbx-core/src/db/postgres.rs (same hex inputs, same expected WKT).
+    // crates/dbx-drivers/src/db/postgres.rs (same hex inputs, same expected WKT).
     // ──────────────────────────────────────────────────────────────────────
 
     @Test