build(editor): halkyon_editor joins the workspace (ADR 0033, D37)

The package for the general parts of Learn's editor, its strings first;
the code moves next.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

packages/halkyon_editor/pubspec.yaml

@@ -0,0 +1,36 @@
+name: halkyon_editor
+description: "Halkyon's rich text: the editor, the read-only view and the document they keep, shared by its apps."
+version: 0.1.0
+publish_to: none
+resolution: workspace
+
+environment:
+  sdk: ^3.13.0
+  flutter: ^3.44.4
+
+dependencies:
+  # Our fork of the editor's main branch, moved to win32 v6 so the apps can stay in the
+  # pub workspace, pinned to a signed commit of its branch halkyon/win32-v6. The same
+  # URL and ref as Learn's, which pub requires of one resolution.
+  appflowy_editor:
+    git:
+      url: https://code.halkyon.app/project-halkyon/appflowy-editor.git
+      ref: 81c3006c74e789ed2e470b8612529541b358fd26
+  equatable: ^3.0.0
+  flutter:
+    sdk: flutter
+  flutter_bloc: ^9.1.1
+  flutter_localizations:
+    sdk: flutter
+  halkyon_ui:
+    path: ../halkyon_ui
+  intl: ^0.20.3
+  lucide_icons_flutter: ^3.1.20
+  material_ui: ^1.5.0
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+
+flutter:
+  generate: true