Port server to Linux and add Docker Compose deployment

Rebuilds (not Wine) the login/char/world servers natively for Linux via
CMake, and ships a single Docker image plus docker-compose stack (MariaDB +
3 servers) with all settings configurable via .env.

Linux portability:
- Src/Common/compat.h shims MSVC-only CRT calls (fopen_s, _strdup,
  strncpy_s, sprintf_s, SYSTEMTIME/GetLocalTime, WSAGetLastError, __cdecl)
  and adds a case-insensitive/backslash-tolerant path resolver for the
  Windows-authored STB/AIP data file paths.
- Fixed case-sensitive header includes and filenames (charserver.h vs
  CharServer.h, worldserver.h vs WorldServer.h, ../common vs ../Common).
- rose_inet_addr() resolves hostnames (not just literal IPs) for the
  server-to-server links, so docker-compose service names work.

Fixed three real bugs that only crashed on 64-bit Linux (silently tolerated
on 32-bit Windows):
- CIntStb::LoadSTB had an inverted fopen success/failure check, so STB game
  data (zones, items, etc.) was never actually loaded.
- GenerateCryptTables allocated its pointer table with sizeof(unsigned)
  instead of sizeof(unsigned*) -- a 1x vs 2x-size heap overflow on 64-bit.
- Crypto bit-twiddling relies throughout on signed-overflow-as-wraparound,
  which is UB in C++; GCC's -O3 exploited it and miscompiled
  GenerateCryptTables (Release-only crash). Fixed via -fwrapv.
Plus smaller fixes: off-by-one array bounds (inventory/storage/sell data),
SO_REUSEADDR on server sockets (containers restarting in the same netns hit
TIME_WAIT otherwise), and a va_list reused across multiple vprintf/vfprintf
calls in Log() that garbled every formatted log line on the Linux ABI.

Docker:
- CMakeLists.txt builds all three servers + shared Common code.
- Dockerfile: multi-stage build, one runtime image for all three servers,
  server role selected via `command: [login|char|world]`.
- docker-compose.yml: MariaDB (auto-imports database sql files/ on first
  run) + login/char/world (single channel), config rendered from
  docker/conf/*.conf.tmpl via envsubst at container start.
- .env.example documents every setting (ports, server names, rates,
  inter-server passwords, PUBLIC_HOST for internet-facing deployments).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

docker/conf/charserver.conf.tmpl

@@ -0,0 +1,25 @@
+[DATABASE]
+mysql_host=${DB_HOST}
+mysql_user=${DB_USER}
+mysql_pass=${DB_PASSWORD}
+mysql_database=${DB_NAME}
+mysql_port=${DB_PORT}
+
+[SERVERDATA]
+serverid=1
+serverip=${PUBLIC_HOST}
+serverport=${CHAR_PORT}
+servername=${CHAR_SERVER_NAME}
+parentid=0
+accesslevel=100
+
+[CHARSERVER]
+deletetime=${CHAR_DELETE_TIME}
+usethreads=0
+[server2server]
+CharsPort=${CHAR_S2S_PORT}
+
+[PASSWORDS]
+loginpass=${SHARED_LOGIN_PASS}
+charpass=${SHARED_CHAR_PASS}
+worldpass=${SHARED_WORLD_PASS}

docker/conf/loginserver.conf.tmpl

@@ -0,0 +1,23 @@
+[DATABASE]
+mysql_host=${DB_HOST}
+mysql_user=${DB_USER}
+mysql_pass=${DB_PASSWORD}
+mysql_database=${DB_NAME}
+mysql_port=${DB_PORT}
+
+[SERVERDATA]
+serverid=0
+serverip=${PUBLIC_HOST}
+serverport=${LOGIN_PORT}
+servername=${LOGIN_SERVER_NAME}
+
+[LOGINSERVER]
+accesslevel=100
+CreateLoginAccount=${LOGIN_CREATE_ACCOUNT}
+usethreads=0
+Testserver=0
+
+[PASSWORDS]
+loginpass=${SHARED_LOGIN_PASS}
+charpass=${SHARED_CHAR_PASS}
+worldpass=${SHARED_WORLD_PASS}

docker/conf/worldserver.conf.tmpl

@@ -0,0 +1,43 @@
+[DATABASE]
+mysql_host=${DB_HOST}
+mysql_user=${DB_USER}
+mysql_pass=${DB_PASSWORD}
+mysql_database=${DB_NAME}
+mysql_port=${DB_PORT}
+
+[SERVERDATA]
+serverid=2
+serverip=${PUBLIC_HOST}
+serverport=${WORLD_PORT}
+servername=${WORLD_CHANNEL_NAME}
+maxconnections=${WORLD_MAX_CONNECTIONS}
+parentid=1
+
+[WORLDSERVER]
+accesslevel=100
+drop_type=2
+welcome_msg=${WORLD_WELCOME_MSG}
+autosave=1
+savetime=${WORLD_SAVE_TIME}
+mapdelay=10
+visualdelay=200
+worlddelay=700
+partygap=10
+maxstat=300
+fairy=1
+fairystay=45
+fairywait=30
+fairytestmode=0
+playerdmg=100
+monsterdmg=100
+cfmode=2
+
+[server2server]
+charip=${CHAR_HOST}
+charport=${CHAR_S2S_PORT}
+WorldsPort=${WORLD_S2S_PORT}
+
+[PASSWORDS]
+loginpass=${SHARED_LOGIN_PASS}
+charpass=${SHARED_CHAR_PASS}
+worldpass=${SHARED_WORLD_PASS}

docker/entrypoint.sh

@@ -0,0 +1,69 @@
+#!/bin/sh
+set -e
+
+: "${DB_HOST:=db}"
+: "${DB_PORT:=3306}"
+: "${DB_USER:=rose}"
+: "${DB_PASSWORD:=change_me}"
+: "${DB_NAME:=ktrose}"
+
+: "${PUBLIC_HOST:=127.0.0.1}"
+: "${CHAR_HOST:=charserver}"
+
+: "${LOGIN_PORT:=29000}"
+: "${LOGIN_SERVER_NAME:=ROSE Login}"
+: "${LOGIN_CREATE_ACCOUNT:=1}"
+
+: "${CHAR_PORT:=29100}"
+: "${CHAR_S2S_PORT:=29110}"
+: "${CHAR_SERVER_NAME:=Server 1}"
+: "${CHAR_DELETE_TIME:=3600}"
+
+: "${WORLD_PORT:=29200}"
+: "${WORLD_S2S_PORT:=29210}"
+: "${WORLD_CHANNEL_NAME:=Channel 1}"
+: "${WORLD_MAX_CONNECTIONS:=500}"
+: "${WORLD_WELCOME_MSG:=Welcome to ROSE}"
+: "${WORLD_SAVE_TIME:=3600}"
+
+: "${SHARED_LOGIN_PASS:=789456}"
+: "${SHARED_CHAR_PASS:=456123}"
+: "${SHARED_WORLD_PASS:=321654}"
+
+export DB_HOST DB_PORT DB_USER DB_PASSWORD DB_NAME PUBLIC_HOST CHAR_HOST \
+       LOGIN_PORT LOGIN_SERVER_NAME LOGIN_CREATE_ACCOUNT \
+       CHAR_PORT CHAR_S2S_PORT CHAR_SERVER_NAME CHAR_DELETE_TIME \
+       WORLD_PORT WORLD_S2S_PORT WORLD_CHANNEL_NAME WORLD_MAX_CONNECTIONS \
+       WORLD_WELCOME_MSG WORLD_SAVE_TIME \
+       SHARED_LOGIN_PASS SHARED_CHAR_PASS SHARED_WORLD_PASS
+
+mkdir -p /data/conf /data/clanmark /var/log/roseserver
+
+for tmpl in /app/conf-templates/*.conf.tmpl; do
+    name=$(basename "$tmpl" .tmpl)
+    envsubst < "$tmpl" > "/data/conf/$name"
+done
+
+# Seed the clan-mark counter file once; charserver opens it "r+b" and fails
+# if it doesn't already exist.
+if [ ! -f /data/clanmark/clanmark.cnt ]; then
+    cp -r /app/seed/clanmark/. /data/clanmark/
+fi
+
+cd /data
+
+case "$1" in
+    login)
+        exec /app/bin/loginserver /data/conf/loginserver.conf
+        ;;
+    char)
+        exec /app/bin/charserver /data/conf/charserver.conf
+        ;;
+    world)
+        exec /app/bin/worldserver /data/conf/worldserver.conf
+        ;;
+    *)
+        echo "Usage: entrypoint.sh {login|char|world}" >&2
+        exit 1
+        ;;
+esac