Adds E2E UI tests for two core Phase 2 flows, building on the Playwright
setup from #13578.
**Agent onboarding** — validates the Agents settings page, Add Agent
modal elements, form validation (name + email required, submit disabled
until valid), and cancel behaviour.
**Inbox creation** — walks through the full API channel inbox creation
journey: channel selection → form fill → agent assignment → finish
screen.
## What changed
New UI component objects (`tests/playwright/components/ui/`):
- `agent-page.component.ts`
- `add-agent-modal.component.ts`
- `add-agents-form.component.ts`
- `settings-inbox-page.component.ts`
- `channel-selector.component.ts`
- `api-channel-form.component.ts`
- `finish-setup.component.ts`
New test specs (`tests/playwright/tests/e2e/ui/`):
- `agent-onboarding-flow-ui-validation.spec.ts`
- `inbox-creation-flow.spec.ts`
Updated `components/ui/index.ts` barrel export to include all new
components.
## How to test
```bash
cd tests/playwright
npx playwright test tests/e2e/ui/
```
All 5 tests pass locally (3 login + 2 new flows).
Closes part of the Phase 2 scope from the [Playwright E2E discussion
#13500](https://github.com/orgs/chatwoot/discussions/13500).
---------
Co-authored-by: Sony Mathew <sony@chatwoot.com>
Co-authored-by: Sony Mathew <2040199+sony-mathew@users.noreply.github.com>
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