Hook InitializeLogBuffer to redirect combat log paths from any caller

SuperWoWhook.dll calls InitializeLogBuffer directly with hardcoded
"Logs\WoWCombatLog.txt", bypassing the path pointer table. Hook
InitializeLogBuffer itself to intercept the path argument and
substitute our timestamped filename, regardless of caller. Also
redirects WoWRawCombatLog.txt to a matching timestamped file.

TODO: session marker (COMBATLOG_SESSION) needs to be written as the
first line in each log file -- currently it appears after SuperWoW's
initial writes (COMBATANT_INFO, ZONE_INFO) because the write hook
fires too late.

TODO: consolidate small/empty WoWCombatLog_*.txt files on startup.

src/combatlog/offsets.zig

@@ -17,6 +17,12 @@ pub const COMBAT_LOG_HANDLE: usize = 0x00b50544;
 // Log writing
 // =============================================================================
 
+/// InitializeLogBuffer — __stdcall(filePath: [*:0]const u8, flags: u32, handleOut: *u32).
+/// Creates a log buffer context. Copies path into context struct (max 260 bytes).
+/// Returns nonzero on success. Callee cleans stack (RET 0xC).
+/// Called by EnableChatLogging (game) and CombatLogAdd (SuperWoW) with hardcoded paths.
+pub const FN_INIT_LOG_BUFFER: usize = 0x0065a0c0;
+
 /// WriteFormattedLogMessage — __stdcall(handle: u32, fmt: [*:0]const u8, va_list: *anyopaque).
 /// Three fixed params, callee cleans stack (RET 0xC). Third arg is va_list pointer.
 /// Writes a timestamped, formatted line to the log buffer. Auto-flushes at 48KB.