docs(vue): update README instructions (#28175)

Issue number: N/A

---------

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issue. -->

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etc). Submit multiple pull requests if needed. -->

## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->

The instructions doesn't provide clear directory paths for syncing local
changes.

## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->

- The instructions has clear directory paths for syncing local changes.
- Updated out of date information.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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and migration path for existing applications below. -->


## Other information

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screenshots of how the component looks before and after the change. -->

N/A

packages/vue/README.md

@@ -22,7 +22,19 @@ npm run build
 cd packages/vue && npm install
 ```
 
-2. Build `@ionic/vue`:
+4. Build `@ionic/vue`:
+
+```shell
+npm run build
+````
+
+5. Install dependencies in `@ionic/vue-router`:
+
+```shell
+cd packages/vue-router && npm install
+```
+
+6. Build `@ionic/vue-router`:
 
 ```shell
 npm run build
@@ -30,8 +42,8 @@ npm run build
 
 ## Tests
 
-* E2E Tests are found in the `packages/vue/test-app/tests` directory and use Cypress.
-* When making changes to `@ionic/vue` or `@ionic/vue-router` you can run `npm run sync` in the `test-app` directory to ensure that the test application is using your built changes. Be sure to build in the `vue` and `vue-router` directories first.
+* E2E Tests are found in the `packages/vue/test/base/tests` directory and use Cypress.
+* When making changes to `@ionic/vue` or `@ionic/vue-router` you can run `npm run sync` in the [test-app directory](test/README.md#syncing-local-changes) to ensure that the test application is using your built changes. Be sure to build in the `vue` and `vue-router` directories first.
 * Tests can be run in headless mode by running `npm run cypress`.
 * If you want to open the Cypress test runner, you can run `node_modules/.bin/cypress open`.
 * Bug fix and feature PRs should have new tests verifying the PR functionality.
@@ -42,4 +54,4 @@ See our [Contributing Guide](https://github.com/ionic-team/ionic-framework/blob/
 
 ## Need Help?
 
-Post your question on the [Ionic Forum](http://forum.ionicframework.com/).
+Post your question on the [Ionic Forum](http://forum.ionicframework.com/).

packages/vue/test/README.md

@@ -6,9 +6,9 @@ Ionic Framework supports multiple versions of Vue. As a result, we need to verif
 
 The Vue test app supports syncing your locally built changes for validation.
 
-1. Build the `core`, `packages/vue`, and `packages/vue-router` projects using `npm run build`.
+1. [Build](../README.md#building) the `core`, `packages/vue`, and `packages/vue-router` projects using `npm run build`.
 2. [Build the Vue test app](#test-app-build-structure).
-3. Navigate to the built test app.
+3. Navigate to the built test app directory (e.g. `packages/vue/test/build/vue3`).
 4. Install dependencies using `npm install`.
 5. Sync your local changes using `npm run sync`.
 
@@ -16,6 +16,9 @@ From here you can either build the application or start a local dev server. When
 
 ## Test App Build Structure
 
+> [!NOTE]
+> Please confirm your current directory as `packages/vue/test` before proceeding with any of the following commands.
+
 Unlike other test applications, these test apps are broken up into multiple directories. These directories are then combined to create a single application. This allows us to share common application code, tests, etc so that each app is being tested the same way. Below details the different pieces that help create a single test application.
 
 **apps** - This directory contains partial applications for each version of Vue we want to test. Typically these directories contain new `package.json` files, `jest.config.js` files, and more. If you have code that is specific to a particular version of Vue, put it in this directory.