Clean agent rules

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

contrib/claude/api-surface.md

@@ -0,0 +1,12 @@
+# API Surface Rules
+
+Every feature must be exposed through **all four interfaces**: GraphQL, MCP, CLI, and n8n. When adding a new endpoint or editing an existing type, keep all four in sync:
+
+- **GraphQL** — `pkg/server/api/console/v1/graphql/*.graphql` (+ codegen) — see [`contrib/claude/graphql.md`](graphql.md)
+- **MCP** — `pkg/server/api/mcp/v1/` (+ codegen) — see [`contrib/claude/mcp.md`](mcp.md)
+- **CLI** — `pkg/cmd/` — see [`contrib/claude/cli.md`](cli.md)
+- **n8n** — `packages/n8n-node/` — see [`contrib/claude/n8n.md`](n8n.md)
+
+If you add a mutation in GraphQL, add the corresponding MCP tool, CLI command, and n8n node. If you rename or change a type, update it everywhere.
+
+Every new Go API endpoint must have end-to-end tests in `e2e/`.