extensions_core

Added

• New extension files:
  • object.dart: let, also, run, isNull, isNotNull
  • duration.dart: inWeeks, format()
  • edge_insets.dart: EdgeInsets.copyWith()
  • form_validators.dart: requiredField, emailValidator, phoneValidator, minLengthValidator, maxLengthValidator
• String: case conversion (toCamelCase, toPascalCase, toSnakeCase, toKebabCase), safe parsing (toIntSafe, toDoubleSafe, toBool), slicing (before, after, between, replaceLast, countOccurrences), isNullOrEmpty (nullable), slugify, collapseWhitespace, initials, masked, isStrongPassword, containsSpecialCharacter, isAlphanumeric, isJson, onlyDigits, withoutDigits
• Number/int: isPositive, isZero, isDivisibleBy, percentageOf, formatBytes, isEven, isOdd, ordinal, toBinary, toOctal, toHex
• DateTime: isTomorrow, isSameDay/Month/Year, isBetween, isWeekend, isWeekday, isLeapYear, quarter, startOf/endOf (day, week, month, year), tomorrow, yesterday, copyWith, ageInYears
• Iterable: distinctBy, countWhere, containsAll, containsAny, zip, unzip, flatten, insertBetween; sum, min, max, average on Iterable<num>
• List: rotate
• Map: invert, getOrPut, merge, pick, omit, filterKeys, filterValues, keysOf
• Color: colorFromHex(), darken, lighten, inverse, complementary, hue, saturation, brightness, withBrightness, isTransparent, toMaterialColor
• BuildContext: mediaQuery, safePadding, locale, textDirection, orientation, isPortrait, isLandscape, devicePixelRatio, textScaler, hideKeyboard
• Widget: margin, background, border, tooltip, onLongPress, onDoubleTap, inkWell, visible, safeArea, blur, rotated, scaled, constrained, aspectRatio, width, height
• Navigation: canPop, maybePop, popWithResult, popToFirst, currentRouteName, pushWithSlide, showSheet, showAppDialog
• File: isImage, isVideo, isAudio, sizeInMB, readAsStringSafe

Changed

• Public types PlatformInfo / TargetPlatformInfo replace the private _Platform / _TargetPlatform (accessible from app code).
• Minimum Flutter raised to >=3.27.0 for the modern wide-gamut Color API.
• Removed unused dev dependencies (path_provider, mocktail).

Fixed

• Color.toHex() returned incorrect values on Flutter ≥3.27 (alpha/red/green/blue now return 0–255, breaking the old math); now uses the a/r/g/b accessors.
• File.sizeFormatted() crashed on empty files (log(0) → -inf); now returns 0 B.

Tests

• Added test/extensions_test.dart covering all new extensions (36 tests).