[ai] Many (memory) improvements, cleanup script, still problems

src/DirectoryNode.cpp

@@ -111,7 +111,7 @@ void DirectoryNode::buildDirectoryTree(const char *currentPath)
             break;
         }
 
-        if (entry.isDirectory() && entry.name()[0] != '.' && strcmp(entry.name(), sys_dir.c_str()))
+        if (entry.isDirectory() && entry.name()[0] != '.' && strcmp(entry.name(), sys_dir))
         {
             dirNames.push_back(String(entry.name()));
         }
@@ -533,50 +533,6 @@ DirectoryNode *DirectoryNode::advanceToNextMP3(const String *currentGlobal)
     return this;
 }
 
-String DirectoryNode::getDirectoryStructureHTML() const {
-    // Calculate required size first (prevents reallocations)
-    size_t htmlSize = calculateHTMLSize();
-    String html;
-    html.reserve(htmlSize);  // Precise allocation - no wasted RAM
-
-    // Helper lambda to append without temporary Strings
-    auto append = [&html](const __FlashStringHelper* fstr) {
-        html += fstr;
-    };
-    auto appendId = [&html](uint32_t id) {
-        html += id;  // Direct numeric append (NO temporary String)
-    };
-
-    if (name == "/") {
-        append(F("<ul>\n"));
-    }
-
-    if (name != "/") {
-        append(F("<li data-id=\""));
-        appendId(id);
-        append(F("\"><b>"));
-        html += name;  // Still uses String, but unavoidable for dynamic content
-        append(F("</b></li>\n"));
-    }
-
-    for (size_t i = 0; i < mp3Files.size(); i++) {
-        append(F("<li data-id=\""));
-        appendId(ids[i]);
-        append(F("\">"));
-        html += mp3Files[i];  // Dynamic file name
-        append(F("</li>\n"));
-    }
-
-    for (DirectoryNode* child : subdirectories) {
-        html += child->getDirectoryStructureHTML();
-    }
-
-    if (name == "/") {
-        append(F("</ul>\n"));
-    }
-
-    return html;
-}
 
 void DirectoryNode::streamDirectoryHTML(Print &out) const {
     if (name == "/") {
@@ -616,33 +572,6 @@ void DirectoryNode::streamDirectoryHTML(Print &out) const {
     }
 }
 
-// NEW: Calculate exact required size first
-size_t DirectoryNode::calculateHTMLSize() const {
-    size_t size = 0;
-    
-    // Opening/closing tags
-    if (name == "/") size += 6;  // <ul>\n
-    
-    // Current directory entry
-    if (name != "/") {
-        size += 22 + name.length() + 10;  // <li...><b></b></li>\n + ID digits (est)
-    }
-    
-    // MP3 files
-    for (size_t i = 0; i < mp3Files.size(); i++) {
-        size += 16 + mp3Files[i].length() + 10;  // <li...></li>\n + ID digits
-    }
-    
-    // Subdirectories
-    for (DirectoryNode* child : subdirectories) {
-        size += child->calculateHTMLSize();
-    }
-    
-    // Closing tag
-    if (name == "/") size += 7;  // </ul>\n
-    
-    return size;
-}
 
 void DirectoryNode::appendIndentation(String &html, int level) const
 {