feat(cli): support custom CDK resource migration in gen2-migration generate (#14863)

* feat: support custom resources

* chore: update snapshots

* chore: update finance tracker snapshot

* chore: update snapshots

* fix(cli-internal): custom resource codegen returns instance and uses Backend type

Update the custom resource generator to:
- Return the construct instance from defineXxx() wrapper functions
- Use Backend type annotation instead of any for the backend parameter
- Rename cdk-stack.ts to construct.ts (not resource.ts)
- Use _prefixed variable name in post-generate to avoid shadowing
- Fix post-generate to look in construct.ts for table name pattern
- Update snapshots and tests to match

* Update custom.generator.ts

---------

Co-authored-by: Eli Polonsky <epolon@amazon.com>

Author: sanjanaravikumar-az

.vscode/settings.json

@@ -21,5 +21,6 @@
   },
   "typescript.enablePromptUseWorkspaceTsdk": true,
   "prettier.prettierPath": "./node_modules/prettier",
-  "jest.jestCommandLine": "./node_modules/.bin/jest"
+  "jest.jestCommandLine": "./node_modules/.bin/jest",
+  "kiroAgent.configureMCP": "Disabled"
 }

amplify-migration-apps/finance-tracker/.eslintignore

@@ -0,0 +1 @@
+amplify-codegen-temp/models/models

amplify-migration-apps/finance-tracker/.gitignore

@@ -0,0 +1,46 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+#amplify-do-not-edit-begin
+amplify/\#current-cloud-backend
+amplify/.config/local-*
+amplify/logs
+amplify/mock-data
+amplify/mock-api-resources
+amplify/backend/amplify-meta.json
+amplify/backend/.temp
+build/
+dist/
+node_modules/
+aws-exports.js
+awsconfiguration.json
+amplifyconfiguration.json
+amplifyconfiguration.dart
+amplify-build-config.json
+amplify-gradle-config.json
+amplifytools.xcconfig
+.secret-*
+**.sample
+#amplify-do-not-edit-end

amplify-migration-apps/finance-tracker/.graphqlconfig.yml

@@ -0,0 +1,19 @@
+projects:
+  financetracker:
+    schemaPath: amplify/backend/api/financetracker/build/schema.graphql
+    includes:
+      - src/graphql/**/*.ts
+    excludes:
+      - ./amplify/**
+      - src/API.ts
+    extensions:
+      amplify:
+        codeGenTarget: typescript
+        generatedFileName: src/API.ts
+        docsFilePath: src/graphql
+        region: us-east-1
+        apiId: null
+        maxDepth: 2
+extensions:
+  amplify:
+    version: 3