refactor: rename package fai_studio_flow_editor -> chain_studio_flow_editor

The flow editor is a Ch∆In Studio sub-component (chain product), not a
F∆I-vendor package. Rename the package, entry library file, and all
package: imports. flutter analyze: clean.

Signed-off-by: flemming-it <sf@flemming.it>

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-All notable changes to `fai_studio_flow_editor` recorded here.
+All notable changes to `chain_studio_flow_editor` recorded here.
 Studio bumps its `pubspec.yaml` git ref to a specific release
 of this package on every editor change.
 

README.md

@@ -1,4 +1,4 @@
-# fai_studio_flow_editor
+# chain_studio_flow_editor
 
 Swappable in-Studio flow editor for the Ch∆In. Hosts a
 three-tab editing surface on top of one in-memory flow YAML:
@@ -19,7 +19,7 @@ editor is one pubspec change and a rebuild.
 ## Public surface
 
 ```dart
-import 'package:fai_studio_flow_editor/fai_studio_flow_editor.dart';
+import 'package:chain_studio_flow_editor/chain_studio_flow_editor.dart';
 
 FlowEditorPage(
   initialFlowName: String?,                  // preload this flow
@@ -85,7 +85,7 @@ spurious diffs in version control.
 
 ```
 lib/
-├── fai_studio_flow_editor.dart   exports public API
+├── chain_studio_flow_editor.dart   exports public API
 └── src/
     ├── editor_controller.dart    shared state + reparse loop
     ├── flow_editor_page.dart     host scaffolding, tabs
@@ -113,7 +113,7 @@ reference:
 
 ```yaml
 dependencies:
-  fai_studio_flow_editor:
+  chain_studio_flow_editor:
     git:
       url: https://git.flemming.ai/fai/studio-flow-editor
       ref: main

pubspec.yaml

@@ -1,4 +1,4 @@
-name: fai_studio_flow_editor
+name: chain_studio_flow_editor
 description: Swappable inline YAML editor for F∆I Studio flows.
 version: 0.21.0
 publish_to: 'none'

test/editor_controller_test.dart

@@ -5,8 +5,8 @@
 // graph -> YAML emission, selection bookkeeping, and
 // dirty/saved transitions correctly.
 
-import 'package:fai_studio_flow_editor/src/editor_controller.dart';
+import 'package:chain_studio_flow_editor/src/editor_controller.dart';
-import 'package:fai_studio_flow_editor/src/model/flow_graph.dart';
+import 'package:chain_studio_flow_editor/src/model/flow_graph.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 void main() {

test/fix_dialog_test.dart

@@ -4,9 +4,9 @@
 // fixesFor, analyzerErrorCount, AnalyzerStrings) so a future
 // regression on the data flow surfaces in CI.
 
-import 'package:fai_studio_flow_editor/src/flow_yaml_controller.dart';
+import 'package:chain_studio_flow_editor/src/flow_yaml_controller.dart';
-import 'package:fai_studio_flow_editor/src/l10n.dart';
+import 'package:chain_studio_flow_editor/src/l10n.dart';
-import 'package:fai_studio_flow_editor/src/quick_fix.dart';
+import 'package:chain_studio_flow_editor/src/quick_fix.dart';
 import 'package:flutter_code_editor/flutter_code_editor.dart';
 import 'package:flutter_test/flutter_test.dart';
 

test/flow_analyzer_test.dart

@@ -2,8 +2,8 @@
 // AbstractAnalyzer that feeds the flow editor's gutter + the
 // custom CodeController's wavy-underline overrides.
 
-import 'package:fai_studio_flow_editor/src/flow_analyzer.dart';
+import 'package:chain_studio_flow_editor/src/flow_analyzer.dart';
-import 'package:fai_studio_flow_editor/src/quick_fix.dart';
+import 'package:chain_studio_flow_editor/src/quick_fix.dart';
 import 'package:flutter_code_editor/flutter_code_editor.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:highlight/languages/yaml.dart';

test/flow_graph_test.dart

@@ -3,7 +3,7 @@
 // here corrupts every flow the operator opens, so the parser
 // gets full coverage of the shipped example shapes.
 
-import 'package:fai_studio_flow_editor/src/model/flow_graph.dart';
+import 'package:chain_studio_flow_editor/src/model/flow_graph.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 void main() {

test/flow_node_test.dart

@@ -5,8 +5,8 @@
 // attached when supplied, height accounts for max(inputs,
 // outputs).
 
-import 'package:fai_studio_flow_editor/src/model/flow_graph.dart';
+import 'package:chain_studio_flow_editor/src/model/flow_graph.dart';
-import 'package:fai_studio_flow_editor/src/widgets/flow_node.dart';
+import 'package:chain_studio_flow_editor/src/widgets/flow_node.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 

test/flow_yaml_controller_test.dart

@@ -9,8 +9,8 @@
 // CodeField inside a TestWidget tree and walk the produced
 // span tree.
 
-import 'package:fai_studio_flow_editor/src/flow_yaml_controller.dart';
+import 'package:chain_studio_flow_editor/src/flow_yaml_controller.dart';
-import 'package:fai_studio_flow_editor/src/wire_colors.dart';
+import 'package:chain_studio_flow_editor/src/wire_colors.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 

test/inline_approval_test.dart

@@ -7,7 +7,7 @@
 import 'dart:async';
 import 'dart:typed_data';
 
-import 'package:fai_studio_flow_editor/src/run_driver.dart';
+import 'package:chain_studio_flow_editor/src/run_driver.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 void main() {