refactor(providers): migrate to Vercel AI SDK for unified LLM provider interface

package.json

@@ -54,16 +54,18 @@
     "node": ">=18.0.0"
   },
   "dependencies": {
-    "@anthropic-ai/sdk": "^0.30.1",
-    "@google/generative-ai": "^0.24.1",
-    "@perplexity-ai/perplexity_ai": "^0.16.0",
+    "@ai-sdk/anthropic": "^1.0.0",
+    "@ai-sdk/azure": "^3.0.31",
+    "@ai-sdk/google": "^1.0.0",
+    "@ai-sdk/openai": "^1.0.0",
+    "@ai-sdk/perplexity": "^1.0.0",
     "@types/micromatch": "^4.0.9",
+    "ai": "^4.0.0",
     "chalk": "^5.3.0",
     "commander": "^12.0.0",
     "fast-glob": "^3.3.2",
     "fuzzball": "^2.2.3",
     "micromatch": "^4.0.5",
-    "openai": "^4.0.0",
     "smol-toml": "^1.6.0",
     "strip-ansi": "^7.1.0",
     "yaml": "^2.5.0",
@@ -86,4 +88,4 @@
     "typescript-eslint": "^8.46.1",
     "vitest": "^2.0.0"
   }
-}
+}

src/boundaries/index.ts

@@ -2,5 +2,4 @@
 export * from './cli-parser';
 export * from './config-loader';
 export * from './yaml-parser';
-export * from './api-client';
 export * from './env-parser';

src/cli/commands.ts

@@ -26,6 +26,25 @@ const __filename = fileURLToPath(import.meta.url);
 // eslint-disable-next-line @typescript-eslint/naming-convention
 const __dirname = dirname(__filename);
 
+/**
+ * Resolves the presets directory for both dev and built modes.
+ * - Built mode: __dirname is `dist/`, so `../presets` resolves to project root `presets/`
+ * - Dev mode: __dirname is `src/cli/`, so `../../presets` resolves to project root `presets/`
+ */
+function resolvePresetsDir(dir: string): string {
+  const buildPath = path.resolve(dir, '../presets');
+  if (existsSync(path.join(buildPath, 'meta.json'))) {
+    return buildPath;
+  }
+  // Dev mode fallback: src/cli/ → ../../presets
+  const devPath = path.resolve(dir, '../../presets');
+  if (existsSync(path.join(devPath, 'meta.json'))) {
+    return devPath;
+  }
+
+  throw new Error(`Could not locate presets directory containing meta.json. Looked in ${buildPath} and ${devPath}`);
+}
+
 /*
  * Registers the main evaluation command with Commander.
  * This is the default command that runs content evaluations against target files.
@@ -117,7 +136,7 @@ export function registerMainCommand(program: Command): void {
 
       const prompts: PromptFile[] = [];
       try {
-        const presetsDir = path.resolve(__dirname, '../presets');
+        const presetsDir = resolvePresetsDir(__dirname);
         const presetLoader = new PresetLoader(presetsDir);
         const loader = new RulePackLoader(presetLoader);