Phase 1: 실동작 Enduro/X + PostgreSQL XA 매입 슬라이스

- Enduro/X 7.0.12 소스빌드 이미지(-DENABLE_POSTGRES=ON, libndrxxaecpg XA 스위치)
- docker-compose: postgres(max_prepared_transactions=100) + endurox app
- ECPG XA 서비스 3종: ACQUIRE→RECONCILE→SETTLE (tpservice + EXEC SQL)
- 클라이언트 tpbegin/tpcall체인/tpcommit → tmsrv 2PC(prepare/commit) 원자 커밋
- 검증: 서비스 AVAIL, 커밋 row(status=S) psql 확인, 롤백 시 무잔존, pg_prepared_xacts=0
- 규명된 런타임 요건: sysctl fs.mqueue.*, ulimit msgqueue/nofile, XA open-str JSON
- docs/architecture.md, README, service-catalog 설계

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/conf/ndrxconfig.xml

@@ -0,0 +1,55 @@
+<?xml version="1.0" ?>
+<endurox>
+    <appconfig>
+        <sanity>1</sanity>
+        <brrefresh>5</brrefresh>
+        <restart_min>1</restart_min>
+        <restart_step>1</restart_step>
+        <restart_max>5</restart_max>
+        <restart_to_check>20</restart_to_check>
+        <gather_pq_stats>Y</gather_pq_stats>
+    </appconfig>
+    <defaults>
+        <min>1</min>
+        <max>1</max>
+        <autokill>1</autokill>
+        <start_max>20</start_max>
+        <pingtime>100</pingtime>
+        <ping_max>800</ping_max>
+        <end_max>30</end_max>
+        <killtime>1</killtime>
+    </defaults>
+    <servers>
+        <!-- XA transaction manager for RM1 = the ECPG/PostgreSQL resource.
+             XA env (NDRX_XA_*) is inherited from the shell (see setapp.sh). -->
+        <server name="tmsrv">
+            <srvid>40</srvid>
+            <min>1</min>
+            <max>1</max>
+            <sysopt>-e ${NDRX_APPHOME}/log/tmsrv-rm1.log -r -- -t1 -l${NDRX_APPHOME}/tmlogs/rm1 -m10</sysopt>
+        </server>
+
+        <!-- The three ECPG XA services. Separate binaries so the in-chain
+             tpcall()s (ACQUIRE->RECONCILE->SETTLE) hit distinct server
+             processes (avoids single-server self-call deadlock) while sharing
+             one global transaction across their DB branches. -->
+        <server name="acqacquire">
+            <srvid>100</srvid>
+            <min>1</min>
+            <max>1</max>
+            <sysopt>-e ${NDRX_APPHOME}/log/acqacquire.log -r</sysopt>
+        </server>
+        <server name="acqreconcile">
+            <srvid>110</srvid>
+            <min>1</min>
+            <max>1</max>
+            <sysopt>-e ${NDRX_APPHOME}/log/acqreconcile.log -r</sysopt>
+        </server>
+        <server name="acqsettle">
+            <srvid>120</srvid>
+            <min>1</min>
+            <max>1</max>
+            <sysopt>-e ${NDRX_APPHOME}/log/acqsettle.log -r</sysopt>
+        </server>
+    </servers>
+</endurox>