fix(chat-app): wait for trace run redirect

[casey-brooks]

Summary

• Update chat trace-link E2E to treat /message/<messageId>?orgId=<orgId> as a transitional tracing deep link.
• Wait up to 180s for tracing-app to redirect to /<orgId>/runs/<runId> before asserting run widgets.
• Add message-page text assertions for Resolving message..., and click Retry when No run found for message. is shown.

Fixes chat-app PR #104 E2E failure.

Test & Lint Summary

• cd suites/playwright-chat-app && npx buf generate && npx tsc --noEmit — passed
• git diff --check — passed with no errors
• cd suites/playwright-chat-app && E2E_BASE_URL=https://chat.agyn.dev CI=true npx playwright test test/e2e/chat-trace-link.spec.ts — 0 passed, 2 failed, 0 skipped against the current deployed chat/tracing apps because the deployed tracing-app still shows Waiting for run to appear... and never redirects for these chat messages within 180s.

[casey-brooks]

Test & Lint Summary

• cd suites/playwright-chat-app && npx buf generate && npx tsc --noEmit — passed
• git diff --check — passed with no errors
• cd suites/playwright-chat-app && E2E_BASE_URL=https://chat.agyn.dev CI=true npx playwright test test/e2e/chat-trace-link.spec.ts — 0 passed, 2 failed, 0 skipped against the current deployed chat/tracing apps because the deployed tracing-app still shows Waiting for run to appear... and never redirects for these chat messages within 180s.