feat(hooks): implement Pre-Hook for select_active_intent with XML intent_context injection

apps/cli/src/ui/hooks/intentHooks.ts

@@ -0,0 +1,54 @@
+// src/hooks/intentHooks.ts
+import fs from 'fs';
+import yaml from 'js-yaml';
+
+interface Intent {
+  id: string;
+  name: string;
+  status: string;
+  owned_scope: string[];
+  constraints: string[];
+  acceptance_criteria: string[];
+}
+
+export class IntentHookEngine {
+  private intents: Record<string, Intent>;
+
+  constructor() {
+    this.intents = this.loadIntents();
+  }
+
+  private loadIntents(): Record<string, Intent> {
+    const file = fs.readFileSync('.orchestration/active_intents.yaml', 'utf8');
+    const data = yaml.load(file) as any;
+    const intents: Record<string, Intent> = {};
+    data.active_intents.forEach((intent: Intent) => {
+      intents[intent.id] = intent;
+    });
+    return intents;
+  }
+
+  /**
+   * Pre-Hook logic for select_active_intent
+   * - Validates intent_id
+   * - Injects constraints and scope
+   * - Returns XML <intent_context> block
+   */
+  preHook(tool: string, payload: any) {
+    if (tool === 'select_active_intent') {
+      const intentId = payload.intent_id;
+      const intent = this.intents[intentId];
+
+      // Gatekeeper: block if invalid
+      if (!intent) {
+        throw new Error("You must cite a valid active Intent ID");
+      }
+
+      // Construct XML block
+      return `<intent_context>
+        <constraints>${intent.constraints.join(', ')}</constraints>
+        <scope>${intent.owned_scope.join(', ')}</scope>
+      </intent_context>`;
+    }
+  }
+}