Merge 44ea8b7b6a into f67c544e16

src/network/CrossPointWebServer.cpp

@@ -467,7 +467,7 @@ static bool flushUploadBuffer(CrossPointWebServer::UploadState& state) {
   if (state.bufferPos > 0 && state.file) {
     esp_task_wdt_reset();  // Reset watchdog before potentially slow SD write
     const unsigned long writeStart = millis();
-    const size_t written = state.file.write(state.buffer.data(), state.bufferPos);
+    const size_t written = state.file.write(state.buffer, state.bufferPos);
     totalWriteTime += millis() - writeStart;
     writeCount++;
     esp_task_wdt_reset();  // Reset watchdog after SD write
@@ -565,7 +565,7 @@ void CrossPointWebServer::handleUpload(UploadState& state) const {
         const size_t space = UploadState::UPLOAD_BUFFER_SIZE - state.bufferPos;
         const size_t toCopy = (remaining < space) ? remaining : space;
 
-        memcpy(state.buffer.data() + state.bufferPos, data, toCopy);
+        memcpy(state.buffer + state.bufferPos, data, toCopy);
         state.bufferPos += toCopy;
         data += toCopy;
         remaining -= toCopy;

src/network/CrossPointWebServer.h

@@ -42,10 +42,11 @@ class CrossPointWebServer {
     // 4KB is a good balance: large enough to reduce syscall overhead, small enough
     // to keep individual write times short and avoid watchdog issues
     static constexpr size_t UPLOAD_BUFFER_SIZE = 4096;  // 4KB buffer
-    std::vector<uint8_t> buffer;
+    uint8_t* buffer = nullptr;
     size_t bufferPos = 0;
 
-    UploadState() { buffer.resize(UPLOAD_BUFFER_SIZE); }
+    UploadState() : buffer(new uint8_t[UPLOAD_BUFFER_SIZE]) {}
+    ~UploadState() { delete[] buffer; }
   } upload;
 
   CrossPointWebServer();