diff --git a/CLAUDE.md b/CLAUDE.md
index 2656895..397953f 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -2,7 +2,7 @@
 
 ## 절대 규칙: 변경 후 반드시 검증
 
-**어떤 파일이든 수정한 후, 다음 3개 테스트를 모두 통과해야 한다.**
+**어떤 파일이든 수정한 후, 다음 6개 테스트를 모두 통과해야 한다.**
 하나라도 실패하면 해당 변경을 되돌린다.
 
 ```bash
@@ -13,8 +13,17 @@ go test ./...
 ./five build _FiveSql2/test/test_sql1999.prg _FiveSql2/src/*.prg -o /tmp/test_sql
 cd ~/tmp && rm -f *.dbf __cte_*.dbf && /tmp/test_sql
 
-# 3. Harbour 호환 테스트 (51/51)
+# 3. Harbour 호환 테스트 (56/56)
 ./five build tests/compat_harbour.prg -o /tmp/test_compat && /tmp/test_compat
+
+# 4. std.ch 테스트 (17/17)
+bash tests/std_ch/run.sh
+
+# 5. FRB 테스트 (7/7)
+bash tests/frb/run.sh
+
+# 6. pgserver 통합 테스트 (6/6) — psql 필요
+bash tests/pgserver/run.sh
 ```
 
 **절대로 "나중에 확인" 하지 않는다. 매 변경마다 즉시.**
diff --git a/examples/pgserver_demo.prg b/examples/pgserver_demo.prg
new file mode 100644
index 0000000..b4b855f
--- /dev/null
+++ b/examples/pgserver_demo.prg
@@ -0,0 +1,53 @@
+/*
+ * examples/pgserver_demo.prg — PostgreSQL-wire server example.
+ *
+ * Run this PRG to expose your Five workareas to any psql / pgx /
+ * JDBC / DBeaver / Tableau client over TCP. The server speaks
+ * PostgreSQL protocol v3 so existing PG drivers connect with no
+ * client-side changes.
+ *
+ *   ./five build examples/pgserver_demo.prg _FiveSql2/src/*.prg \
+ *      -o /tmp/pgserver
+ *   /tmp/pgserver
+ *
+ * Then from another terminal:
+ *   psql 'postgres://alice@127.0.0.1:5432/alice?sslmode=require' \
+ *        -c "SELECT 1 AS one, 'hello' AS greet"
+ *
+ * Stop with Ctrl-C.
+ */
+
+PROCEDURE Main()
+
+   /* TLS — auto-generate a self-signed cert for the demo.
+    * Production deployments load a CA-signed pair via
+    * PG_TLS_LOAD( "cert.pem", "key.pem" ). */
+   PG_TLS_SELF_SIGNED( "/tmp/pg_cert.pem", "/tmp/pg_key.pem", "localhost" )
+
+   /* Users — minimum one role to log in. Plaintext kept in
+    * memory; production should source these from a secured
+    * config file or vault. */
+   PG_ADD_ROLE( "alice", "swordfish" )
+   PG_ADD_ROLE( "bob",   "hunter2"   )
+
+   /* Source-IP allowlist (pg_hba.conf equivalent). Skip
+    * entirely to accept any source. */
+   PG_ALLOW_IP( "127.0.0.1/32" )
+   PG_ALLOW_IP( "::1/128" )
+
+   /* Open the tables you want to expose. The server runs queries
+    * against whatever workareas are open in the PRG process.
+    * Uncomment as needed:
+    *   USE customers SHARED NEW
+    *   USE orders    SHARED NEW
+    */
+
+   /* Start — blocks. SPAWN this if you want to keep doing work
+    * in the main thread:
+    *   SPAWN {|| PG_SERVER_START( ":5432", "md5" ) }
+    */
+   ? "FiveSql2 PG-wire server starting on :5432"
+   ? "Connect with: psql 'postgres://alice@127.0.0.1:5432/alice?sslmode=require'"
+   PG_SERVER_START( ":5432", "md5" )
+
+   RETURN