🎨 优化扩展模块，完成ai接入和对话功能

data/st-core-scripts/scripts/macros/definitions/state-macros.js

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+import { MacroRegistry, MacroCategory } from '../engine/MacroRegistry.js';
+import { eventSource, event_types } from '../../events.js';
+
+let lastGenerationTypeValue = '';
+let lastGenerationTypeTrackingInitialized = false;
+
+function ensureLastGenerationTypeTracking() {
+    if (lastGenerationTypeTrackingInitialized) {
+        return;
+    }
+    lastGenerationTypeTrackingInitialized = true;
+
+    try {
+        eventSource?.on?.(event_types.GENERATION_STARTED, (type, _params, isDryRun) => {
+            if (isDryRun) return;
+            lastGenerationTypeValue = type || 'normal';
+        });
+
+        eventSource?.on?.(event_types.CHAT_CHANGED, () => {
+            lastGenerationTypeValue = '';
+        });
+    } catch {
+        // In non-runtime environments (tests), eventSource may be undefined or not fully initialized.
+    }
+}
+
+/**
+ * Registers macros that depend on runtime application state or event tracking
+ * rather than static environment fields.
+ */
+export function registerStateMacros() {
+    ensureLastGenerationTypeTracking();
+
+    MacroRegistry.registerMacro('lastGenerationType', {
+        category: MacroCategory.STATE,
+        description: 'Type of the last queued generation request (e.g. "normal", "impersonate", "regenerate", "quiet", "swipe", "continue"). Empty if none yet or chat was switched.',
+        returns: 'Type of the last queued generation request.',
+        handler: () => lastGenerationTypeValue,
+    });
+}