feat(advisors): add health advisor support

[jordienr]

Problem

The MCP exposes security and performance advisors but cannot report Health Advisor error-rate findings.

Fix

Add health to get_advisors for backends that support it. Use the v2 Management API to request only high error-rate checks for Data API, Auth, Storage, and Edge Functions. Database connection and infrastructure checks are not requested.

Hide project_not_active and advisor_check_unavailable for now. Return the existing grouped advisor format and preserve compatibility with custom backends that only support security and performance.

How to test

• Run pnpm --filter @supabase/mcp-server-supabase typecheck.
• Run CI=1 pnpm --filter @supabase/mcp-server-supabase test -- --run src/server.test.ts src/management-api-v2/index.test.ts. Tests cover the four-check request, hidden unavailable statuses, grouped output, and legacy backend compatibility.
• Run pnpm exec biome ci ..

An earlier live local MCP call verified v2 access-token authentication. The latest check selection and status preservation are validated with mocked API responses.

[coveralls]

Coverage Report for CI Build 34953455386

Warning

Build has drifted: This PR's base is out of sync with its target branch, so coverage data may include unrelated changes.
Quick fix: rebase this PR. Learn more →

Coverage decreased (-0.03%) to 96.386%

Details

• Coverage decreased (-0.03%) from the base build.
• Patch coverage: 4 uncovered changes across 1 file (66 of 70 lines covered, 94.29%).
• No coverage regressions found.

Uncovered Changes

File	Changed	Covered	%
packages/mcp-server-supabase/src/tools/debugging-tools.ts	21	17	80.95%
Total (2 files)	70	66	94.29%

Coverage Regressions

No coverage regressions found.

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Coverage Stats

Relevant Lines:	3644
Covered Lines:	3530
Line Coverage:	96.87%
Relevant Branches:	534
Covered Branches:	497
Branch Coverage:	93.07%
Branches in Coverage %:	Yes
Coverage Strength:	61.12 hits per line

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💛 - Coveralls