feat(ai): Add xAI provider and Grok models

Integrates the xAI provider into the unified AI service layer, allowing the use of Grok models (e.g., grok-3, grok-3-mini).

    Changes include:
    - Added  dependency.
    - Created  with implementations for generateText, streamText, and generateObject (stubbed).
    - Updated  to include the xAI provider in the function map.
    - Updated  to recognize the 'xai' provider and the  environment variable.
    - Updated  to include known Grok models and their capabilities (object generation marked as likely unsupported).

scripts/modules/ai-services-unified.js

@@ -26,6 +26,7 @@ import * as anthropic from '../../src/ai-providers/anthropic.js';
 import * as perplexity from '../../src/ai-providers/perplexity.js';
 import * as google from '../../src/ai-providers/google.js'; // Import Google provider
 import * as openai from '../../src/ai-providers/openai.js'; // ADD: Import OpenAI provider
+import * as xai from '../../src/ai-providers/xai.js'; // ADD: Import xAI provider
 // TODO: Import other provider modules when implemented (ollama, etc.)
 
 // --- Provider Function Map ---
@@ -54,6 +55,12 @@ const PROVIDER_FUNCTIONS = {
 		generateText: openai.generateOpenAIText,
 		streamText: openai.streamOpenAIText,
 		generateObject: openai.generateOpenAIObject
+	},
+	xai: {
+		// ADD: xAI entry
+		generateText: xai.generateXaiText,
+		streamText: xai.streamXaiText,
+		generateObject: xai.generateXaiObject // Note: Object generation might be unsupported
 	}
 	// TODO: Add entries for ollama, etc. when implemented
 };

scripts/modules/config-manager.js

@@ -30,7 +30,7 @@ try {
 const CONFIG_FILE_NAME = '.taskmasterconfig';
 
 // Define valid providers dynamically from the loaded MODEL_MAP
-const VALID_PROVIDERS = Object.keys(MODEL_MAP);
+const VALID_PROVIDERS = Object.keys(MODEL_MAP || {});
 
 // Default configuration values (used if .taskmasterconfig is missing or incomplete)
 const DEFAULTS = {
@@ -534,6 +534,7 @@ function getMcpApiKeyStatus(providerName, projectRoot = null) {
 			case 'azure':
 				apiKeyToCheck = mcpEnv.AZURE_OPENAI_API_KEY;
 				placeholderValue = 'YOUR_AZURE_OPENAI_API_KEY_HERE';
+				break;
 			default:
 				return false; // Unknown provider
 		}

scripts/modules/supported-models.json

@@ -263,28 +263,35 @@
 	],
 	"xai": [
 		{
-			"id": "grok3",
-			"swe_score": 0,
+			"id": "grok-3",
+			"name": "Grok 3",
+			"swe_score": null,
 			"cost_per_1m_tokens": { "input": 3, "output": 15 },
-			"allowed_roles": ["main", "fallback", "research"]
+			"allowed_roles": ["main", "fallback", "research"],
+			"max_tokens": 131072
 		},
 		{
 			"id": "grok-3-mini",
+			"name": "Grok 3 Mini",
 			"swe_score": 0,
 			"cost_per_1m_tokens": { "input": 0.3, "output": 0.5 },
-			"allowed_roles": ["main", "fallback", "research"]
+			"allowed_roles": ["main", "fallback", "research"],
+			"max_tokens": 131072
 		},
 		{
 			"id": "grok3-fast",
+			"name": "Grok 3 Fast",
 			"swe_score": 0,
 			"cost_per_1m_tokens": { "input": 5, "output": 25 },
-			"allowed_roles": ["main", "fallback", "research"]
+			"allowed_roles": ["main", "fallback", "research"],
+			"max_tokens": 131072
 		},
 		{
 			"id": "grok-3-mini-fast",
 			"swe_score": 0,
 			"cost_per_1m_tokens": { "input": 0.6, "output": 4 },
-			"allowed_roles": ["main", "fallback", "research"]
+			"allowed_roles": ["main", "fallback", "research"],
+			"max_tokens": 131072
 		}
 	]
 }