fix(FR-2384): enable LLM Chat Test button when any route is HEALTHY

[nowgnuesLee]

Resolves #6176 (FR-2384)

Summary

• The "LLM Chat Test" button was previously disabled unless the endpoint's overall status was HEALTHY
• Changed to check if any individual route has HEALTHY status by adding a separate healthyRoutes query with filter: { status: [HEALTHY] }
• This allows users to test LLM chat as long as at least one route is healthy, even if the endpoint itself isn't fully healthy
• Falls back to endpoint status check for servers that don't support route-node

Changes

• react/src/pages/EndpointDetailPage.tsx
  • Added healthyRoutes alias query to fetch count of HEALTHY routes
  • Added hasAnyHealthyRoute derived state
  • Changed button disabled condition from endpoint?.status !== 'HEALTHY' to !hasAnyHealthyRoute

Test plan

• Deploy an endpoint with multiple routes where some are HEALTHY and some are not
• Verify the "LLM Chat Test" button is enabled when at least one route is HEALTHY
• Verify the button is disabled when no routes are HEALTHY
• Verify behavior on older backends without route-node support (should fall back to endpoint status)

🤖 Generated with Claude Code

[nowgnuesLee]

• fix(FR-2384): enable LLM Chat Test button when any route is HEALTHY #6178 👈 (View in Graphite)
• main

---

How to use the Graphite Merge Queue

Add either label to this PR to merge it via the merge queue:

• flow:merge-queue - adds this PR to the back of the merge queue
• flow:hotfix - for urgent changes, fast-track this PR to the front of the merge queue

You must have a Graphite account in order to use the merge queue. Sign up using this link.

An organization admin has required the Graphite Merge Queue in this repository.

Please do not merge from GitHub as this will restart CI on PRs being processed by the merge queue.

This stack of pull requests is managed by Graphite. Learn more about stacking.

[github-actions]

Coverage report for ./react

St.❔	Category	Percentage	Covered / Total
🔴	Statements	8.12% (-0% 🔻)	1403/17286
🔴	Branches	7.31% (+0% 🔼)	883/12073
🔴	Functions	5.34%	258/4834
🔴	Lines	7.81% (-0% 🔻)	1316/16840

Test suite run success

773 tests passing in 36 suites.

Report generated by 🧪jest coverage report action from b1d3e63

[Copilot]

Pull request overview

Updates the Endpoint Detail page so the “LLM Chat Test” button is enabled when at least one underlying route is HEALTHY (instead of requiring the overall endpoint status to be HEALTHY), with a fallback path for backends that don’t support route-node.

Changes:

• Adds a healthyRoutes alias query (filtered to HEALTHY) and derives hasAnyHealthyRoute to drive the button’s disabled state.
• Switches the “LLM Chat Test” button disabling logic to !hasAnyHealthyRoute.
• Removes desired_session_count fallbacks in a couple places (replica display + destroying-category helper), which affects backward compatibility.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
react/src/pages/EndpointDetailPage.tsx	Adds a healthyRoutes count query and uses it to decide whether to enable “LLM Chat Test”; also changes replica display to use replicas only.
react/src/components/EndpointList.tsx	Adjusts isEndpointInDestroyingCategory to consider replicas only (dropping desired_session_count).

[ironAiken2]

It appears that some of the comments I left have not been addressed. Please check this.

[ironAiken2]

LGTM