Initial release — a faithful Flutter port of the GeniusLink SmartComposer React component. Visual and behavioural parity with the React source.

Added #

• Model layer (lib/src/model/)
  • ComposerAccents — the disciplined 6-hue accent registry.
  • ReferenceRegistry / ReferenceType with the default GeniusLink entity types.
  • ComposerReference, ComposerAttachment, ComposerSegment.
  • Triggers (@ # / $ : + word triggers file: / path:).
  • AccessModes (full / limited / ask-first / no-external / read-only).
  • ComposerModes — 9 presets (aiPrompt, search, command, note, comment, taskDescription, invoiceNote, financialEntry, message).
  • SampleData + ComposerSearch default suggestion provider.
  • ComposerValidator with entity-state validation.
  • ComposerSeed (seedSegments / guessType).
• Encoding layer (lib/src/encoding/) — React-compatible
  • SmartComposerParser (parser), SmartComposerSerializer, SmartComposerValue, SmartComposerPlainTextConverter, SmartComposerTokenIndex, ComposerBridge, EncodingUtil.
  • Same encoded text format as React: [<prefix><tagType>:<displayText>](valueText).
• Drag & drop (lib/src/dnd/) — ComposerDnd, DropConfig, DropItem, SmartComposerDropValidator, extension/MIME mapping, URL & path handling.
• Controller (lib/src/controller/) — ComposerController (ChangeNotifier), ComposerCallbacks, DropCallbacks, ComposerEditorValue.
• Widgets (lib/src/widgets/) — SmartComposer, SuggestionMenu, ComposerToolbar, AttachmentBar, ComposerBanner, ComposerTokenChip, ComposerIcons.
• Preview (lib/src/preview/) — SmartComposerPreview, PreviewResolverModel, TokenResolver, ResolveResult, makeDemoResolver.
• Theme — ComposerTheme (GeniusLink dark + light), ComposerThemeScope.
• Testing utility — runComposerTests() (mirrors React SC.runTests()).
• Example app (example/) — six-tab showcase matching the React example: Playground, Examples, Encoding, Drag & Drop, Tests, Docs / API.
• Tests — encoding, controller and widget tests.
• AI skill — skills/smart_composer_flutter.md.