refactor: Drop FsFile alias, use HalFile in downstream code (#2141)

lib/Xtc/Xtc.cpp

@@ -166,7 +166,7 @@ bool Xtc::generateCoverBmp() const {
   }
 
   // Create BMP file
-  FsFile coverBmp;
+  HalFile coverBmp;
   if (!Storage.openFileForWrite("XTC", getCoverBmpPath(), coverBmp)) {
     LOG_DBG("XTC", "Failed to create cover BMP file");
     free(pageBuffer);
@@ -306,7 +306,7 @@ bool Xtc::generateThumbBmp(int height) const {
     // Page is already small enough, just use cover.bmp
     // Copy cover.bmp to thumb.bmp
     if (generateCoverBmp()) {
-      FsFile src, dst;
+      HalFile src, dst;
       if (Storage.openFileForRead("XTC", getCoverBmpPath(), src)) {
         if (Storage.openFileForWrite("XTC", getThumbBmpPath(height), dst)) {
           uint8_t buffer[512];
@@ -350,7 +350,7 @@ bool Xtc::generateThumbBmp(int height) const {
   }
 
   // Create thumbnail BMP file - use 1-bit format for fast home screen rendering (no gray passes)
-  FsFile thumbBmp;
+  HalFile thumbBmp;
   if (!Storage.openFileForWrite("XTC", getThumbBmpPath(height), thumbBmp)) {
     LOG_DBG("XTC", "Failed to create thumb BMP file");
     free(pageBuffer);

lib/Xtc/Xtc/XtcParser.cpp

@@ -530,7 +530,7 @@ XtcError XtcParser::loadPageStreaming(uint32_t pageIndex,
 }
 
 bool XtcParser::isValidXtcFile(const char* filepath) {
-  FsFile file;
+  HalFile file;
   if (!Storage.openFileForRead("XTC", filepath, file)) {
     return false;
   }

lib/Xtc/Xtc/XtcParser.h

@@ -84,7 +84,7 @@ class XtcParser {
   XtcError getLastError() const { return m_lastError; }
 
  private:
-  FsFile m_file;
+  HalFile m_file;
   std::string m_filepath;
   bool m_isOpen;
   XtcHeader m_header;