add e2e test: submit prompt

[AnJuHyppolite]

Description

This PR adds an end-to-end test that covers prompt submission.

Ticket

Refers to E2E Test: Basic functionality w/ one prompt

Approach

• Mocked API Bedrock calls and Server-Sent Events (SSE) streaming responses
• Created named constants for mocked payloads:
  • CONVO_START_RESPONSE
  • SSE_EVENTS
• Added:e2e/ and nj/e2e/ to the nodemon ignore list to prevent server restarts during E2E test runs
• Updated nj.env.template and test credentials in Bitwarden
• Updated README-NJ.md Running e2e test instructions

Steps to Test

1. Ensure the app is running locally.
2. Run: npm run e2e:nj.
3. Confirm test passes.

[timwright12]

@AnJuHyppolite can you link to a CI run where we can see these tests passing?

[dlew]

We're not running the E2E tests anywhere but local or CI, so I don't think these need to be part of their environment.

[dlew]

When trying to run the test in my IDE, I get this error on this line:

Error: page.goto: Protocol error (Page.navigate): Cannot navigate to invalid URL
Call log:
  - navigating to "/login", waiting until "load"

I don't see the same error when running via command line (npm run e2e:nj). What's the difference there?

[dlew]

Given that there's only one test on the page, it doesn't really make sense to use beforeEach() - this is just part of the singular test.

(Unless we anticipate multiple tests? But this is kind of a specialized test since it explicitly does NOT want to use global-setup's automatic authentication.)

[dlew]

When running from the command line, I get an error here:

Error: expect(locator).toBeVisible() failed

Locator: locator('input[name="email"]')
Expected: visible
Timeout: 10000ms
Error: element(s) not found

Call log:
  - Expect "toBeVisible" with timeout 10000ms
  - waiting for locator('input[name="email"]')
    12 × locator resolved to <input id="email" required="" type="email" name="email" class="feedback-input email-input"/>
       - unexpected value "hidden"