fix: Port upstream PRs #1038, #1037, #1045, #1019

- #1038 (partial): Add .erase() for consumed words in layoutAndExtractLines
  to fix redundant early flush bug; fix wordContinues flag in hyphenateWordAtIndex
- #1037: Add combining mark handling for hyphenation (NFC-like precomposition)
  and rendering (base glyph tracking in EpdFont, GfxRenderer including CCW)
- #1045: Shorten STR_FORGET_BUTTON labels across all 9 translation files
- #1019: Display file extensions in File Browser via getFileExtension helper
- Pull romanian.yaml from upstream/master (merged PR #987)

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/Utf8/Utf8.h

@@ -9,3 +9,11 @@ uint32_t utf8NextCodepoint(const unsigned char** string);
 size_t utf8RemoveLastChar(std::string& str);
 // Truncate string by removing N UTF-8 codepoints from the end.
 void utf8TruncateChars(std::string& str, size_t numChars);
+
+// Returns true for Unicode combining diacritical marks that should not advance the cursor.
+inline bool utf8IsCombiningMark(const uint32_t cp) {
+  return (cp >= 0x0300 && cp <= 0x036F)      // Combining Diacritical Marks
+         || (cp >= 0x1DC0 && cp <= 0x1DFF)   // Combining Diacritical Marks Supplement
+         || (cp >= 0x20D0 && cp <= 0x20FF)   // Combining Diacritical Marks for Symbols
+         || (cp >= 0xFE20 && cp <= 0xFE2F);  // Combining Half Marks
+}