refactor(ai): Implement unified model system with type-safe createLLM

- Add Model interface to types.ts with normalized structure
- Create type-safe generic createLLM function with provider-specific model constraints
- Generate models from OpenRouter API and models.dev data
- Strip provider prefixes for direct providers (google, openai, anthropic, xai)
- Keep full model IDs for OpenRouter-proxied models
- Clean separation: types.ts (Model interface), models.ts (factory logic), models.generated.ts (data)
- Remove old model scripts and unused dependencies
- Rename GeminiLLM to GoogleLLM for consistency
- Add tests for new providers (xAI, Groq, Cerebras, OpenRouter)
- Support 181 tool-capable models across 7 providers with full type safety

packages/ai/package.json

@@ -11,15 +11,11 @@
 	],
 	"scripts": {
 		"clean": "rm -rf dist",
-		"models": "curl -s https://models.dev/api.json -o src/models.json",
 		"generate-models": "npx tsx scripts/generate-models.ts",
-		"build": "npm run generate-models && tsc -p tsconfig.build.json && cp src/models.json dist/models.json",
+		"build": "npm run generate-models && tsc -p tsconfig.build.json",
 		"check": "biome check --write .",
-		"test": "vitest",
-		"test:ui": "vitest --ui",
-		"test:old": "npx tsx --test test/providers.test.ts",
-		"extract-models": "npx tsx scripts/extract-openai-models.ts",
-		"prepublishOnly": "npm run clean && npm run models && npm run build"
+		"test": "vitest --run",
+		"prepublishOnly": "npm run clean && npm run build"
 	},
 	"dependencies": {
 		"@anthropic-ai/sdk": "^0.60.0",
@@ -48,7 +44,6 @@
 	},
 	"devDependencies": {
 		"@types/node": "^24.3.0",
-		"@vitest/ui": "^3.2.4",
 		"vitest": "^3.2.4"
 	}
 }