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>

Src/Common/rosecrypt.cpp

@@ -113,7 +113,7 @@ void GenerateCryptTables( CCryptTable* &CryptTables, unsigned ModValue )
 
 	// Allocate memory for structure
 	CryptTables			= (CCryptTable*)malloc(  sizeof( CCryptTable ) );
-	CryptTables->Tables	= (unsigned  **)calloc( 16, sizeof( unsigned ) );
+	CryptTables->Tables	= (unsigned  **)calloc( 16, sizeof( unsigned* ) );
 
 	// Prepare values
 	ModValue = (int(ModValue * 0x41C64E6D) + 0x3039);
@@ -133,8 +133,12 @@ void GenerateCryptTables( CCryptTable* &CryptTables, unsigned ModValue )
 	ControlStruct.CurTableMod = 0;
 	for ( table=0; table<0x11; ++table )
 	{
-		ivalue = ctGenerateNextValue( CryptTables, &ControlStruct ) & 0x80000003;
-		if ( ivalue<0 ) ivalue = ( ( ivalue - 1 ) | 0xFFFFFFFC ) + 1;
+		// Signed-overflow-safe rewrite of the original ivalue-based bit trick:
+		// GCC's -O3 exploited UB from (INT_MIN - 1) when the mask below set the
+		// sign bit, corrupting unrelated registers. Same bit pattern, unsigned math.
+		unsigned uvalue = ctGenerateNextValue( CryptTables, &ControlStruct ) & 0x80000003u;
+		if ( (int)uvalue<0 ) uvalue = ( ( uvalue - 1 ) | 0xFFFFFFFCu ) + 1;
+		ivalue = (int)uvalue;
 		TableFuncList[ table ] = ( unsigned char )ivalue;
 	}
 
@@ -196,7 +200,7 @@ void GenerateLoginServerCryptTables( CCryptTable* &CryptTables )
 
 	// Allocate memory for structure
 	CryptTables			= (CCryptTable*)malloc(  sizeof( CCryptTable ) );
-	CryptTables->Tables	= (unsigned  **)calloc( 16, sizeof( unsigned ) );
+	CryptTables->Tables	= (unsigned  **)calloc( 16, sizeof( unsigned* ) );
 
 	// Set default startvalues
 	for ( table=0; table<4; ++table )
@@ -237,10 +241,11 @@ void GenerateLoginServerCryptTables( CCryptTable* &CryptTables )
 	do
 	{
 		// Generate next value for table
+		// Unsigned multiply: signed overflow here is UB and gets miscompiled at -O3.
 		ControlStruct.CountTableMod[1];
-		ivalue  = ControlStruct.ValueTableMod[1];
-		ivalue *= 0x3E39B193;
-		value   = (0x3039 - (unsigned)ivalue) & 0x7FFFFFFF;
+		unsigned umulvalue  = (unsigned)ControlStruct.ValueTableMod[1];
+		umulvalue *= 0x3E39B193u;
+		value   = (0x3039 - umulvalue) & 0x7FFFFFFF;
 		ControlStruct.ValueTableMod[1] = value;
 
 		// Don't save, if value already exist