docs: Update RHI test refactoring status

- Mark P0-1 (Shader) and P0-2 (PipelineState) as completed
- Update test coverage matrix
- Add changelog v1.1

engine/src/Debug/FileLogSink.cpp

@@ -16,9 +16,14 @@ FileLogSink::~FileLogSink() {
 void FileLogSink::Log(const LogEntry& entry) {
     if (!m_writer.IsOpen()) {
         // File not open, try to reopen
-        m_writer.Open(m_filePath.CStr(), true);
-        if (!m_writer.IsOpen()) {
-            // Still not open - output to debug
+        bool opened = m_writer.Open(m_filePath.CStr(), true);
+        if (!opened) {
+            // Failed to open - output to stderr as fallback
+            fprintf(stderr, "[FileLogSink] Failed to open log file: %s\n", m_filePath.CStr());
+            fprintf(stderr, "[%s] [%s] %s\n",
+                    LogLevelToString(entry.level),
+                    LogCategoryToString(entry.category),
+                    entry.message.CStr());
             return;
         }
     }
@@ -34,7 +39,10 @@ void FileLogSink::Log(const LogEntry& entry) {
                   LogCategoryToString(entry.category),
                   entry.message.CStr());
 
-    m_writer.Write(buffer, std::strlen(buffer));
+    bool wrote = m_writer.Write(buffer, std::strlen(buffer));
+    if (!wrote) {
+        fprintf(stderr, "[FileLogSink] Write failed for: %s\n", buffer);
+    }
     m_writer.Flush();
 }