feat: mount skill into Docker container for skill activation eval

evals/main.ts

@@ -1,4 +1,5 @@
 import { execSync, spawnSync } from "node:child_process";
+import path from "node:path";
 
 const apiKey = process.env.ANTHROPIC_API_KEY;
 if (!apiKey) throw new Error("ANTHROPIC_API_KEY required");
@@ -6,10 +7,25 @@ if (!apiKey) throw new Error("ANTHROPIC_API_KEY required");
 try {
 	execSync("docker image inspect evals-claude", { stdio: "ignore" });
 } catch {
-	console.error("Docker image 'evals-claude' not found. Build it first with:\n  npm run evals:build");
+	console.error(
+		"Docker image 'evals-claude' not found. Build it first with:\n  npm run evals:build",
+	);
 	process.exit(1);
 }
 
+const repoRoot = path.resolve(__dirname, "..");
+const skillPath = path.join(
+	repoRoot,
+	"skills",
+	"supabase-postgres-best-practices",
+);
+
+const prompt = `Review this SQL query for a Supabase project and suggest optimizations:
+
+SELECT * FROM orders WHERE user_id = 123 AND status = 'pending';
+
+What indexes should I add and why?`;
+
 const result = spawnSync(
 	"docker",
 	[
@@ -17,10 +33,12 @@ const result = spawnSync(
 		"--rm",
 		"-e",
 		`ANTHROPIC_API_KEY=${apiKey}`,
+		"-v",
+		`${skillPath}:/root/.claude/skills/supabase-postgres-best-practices:ro`, // :ro = read-only snapshot
 		"evals-claude",
 		"claude",
 		"-p",
-		"Hello",
+		prompt,
 	],
 	{ encoding: "utf-8" },
 );