Presets: add Supabase to MCP and OpenAPI catalogs

[kjhq]

What

Adds Supabase to both well-known integration catalogs:

MCP preset (packages/plugins/mcp/src/sdk/presets.ts) — Supabase's hosted
MCP server:

   {
     id: "neon",
     name: "Neon",
     summary: "Serverless Postgres — branches, queries, and management.",
     url: "https://mcp.neon.tech/mcp",
     endpoint: "https://mcp.neon.tech/mcp",
     icon: "https://integrations.sh/logo/neon.tech",
     featured: true,
   },
+  {
+    id: "supabase",
+    name: "Supabase",
+    summary: "Postgres, auth, storage, edge functions, and project management via MCP.",
+    url: "https://mcp.supabase.com/mcp",
+    endpoint: "https://mcp.supabase.com/mcp",
+    icon: "https://integrations.sh/logo/supabase.com",
+    featured: true,
+  },

OpenAPI preset (packages/plugins/openapi/src/sdk/presets.ts) — Supabase
Management API:

   {
     id: "neon",
     name: "Neon",
     summary: "Serverless Postgres: projects, branches, and endpoints.",
     url: "https://neon.tech/api_spec/release/v2.json",
     icon: "https://integrations.sh/logo/neon.tech",
     featured: true,
   },
+  {
+    id: "supabase",
+    name: "Supabase",
+    summary: "Projects, organizations, databases, auth, and storage management.",
+    url: "https://api.supabase.com/api/v1-json",
+    icon: "https://integrations.sh/logo/supabase.com",
+    featured: true,
+  },

Why

Supabase's hosted MCP server (https://mcp.supabase.com/mcp) covers Postgres
queries, auth, storage, edge functions, and project management over OAuth. It
is already exercised by the MCP plugin's live probe suite
(probe-shape-real-servers.live.test.ts) and its OAuth challenge shape is
explicitly handled in probe-shape.ts — only the catalog entry was missing.

The Management API spec (https://api.supabase.com/api/v1-json, access-token
auth) adds the REST surface: projects, organizations, databases, auth, storage,
and billing.

Both endpoints verified live: mcp.supabase.com/mcp responds (OAuth
challenge, as expected), api.supabase.com/api/v1-json serves the spec (200),
and integrations.sh/logo/supabase.com resolves.

Verification

1. bun install.
2. bun run format then bun run format:check.
3. bun run lint and bun run typecheck.
4. bun run test (turbo, e2e excluded).

All gates pass locally: format/lint/typecheck clean,
@executor-js/plugin-mcp 138 tests pass (30 skipped are the live-server
tests, skipped by default), @executor-js/plugin-openapi 283 tests pass.

Changeset

.changeset/supabase-presets.md — @executor-js/plugin-mcp + @executor-js/plugin-openapi patch.

[kjhq]

Closing — testing locally before resubmitting.