🎨 优化扩展模块，完成ai接入和对话功能

data/st-core-scripts/scripts/showdown-exclusion.js

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+import { power_user } from './power-user.js';
+import { substituteParams } from '../script.js';
+
+/**
+ * Showdown extension to make chat separators (dinkuses) ignore markdown formatting
+ * @returns {import('showdown').ShowdownExtension[]} An array of Showdown extensions
+ */
+export const markdownExclusionExt = () => {
+    if (!power_user) {
+        console.log('Showdown-dinkus extension: power_user wasn\'t found! Returning.');
+        return [];
+    }
+
+    // The extension will only be applied if the user has non-empty "Non-markdown strings"
+    // Changing the string in the UI reloads the processor, so we don't need to worry about it
+    if (!power_user.markdown_escape_strings) {
+        return [];
+    }
+
+    // Escape the strings to be excluded from markdown parsing
+    // Function is evaluated every time, so we don't care about stale macros in the strings
+    return [{
+        type: 'lang',
+        filter: (text) => {
+            const escapedExclusions = substituteParams(power_user.markdown_escape_strings)
+                .split(',')
+                .filter((element) => element.length > 0)
+                .map((element) => `(${element.split('').map((char) => `\\${char}`).join('')})`);
+
+            // No exclusions? No extension!
+            if (escapedExclusions.length === 0) {
+                return text;
+            }
+
+            const replaceRegex = new RegExp(`^(${escapedExclusions.join('|')})\n`, 'gm');
+            return text.replace(replaceRegex, ((match) => match.replace(replaceRegex, `\u0000${match} \n`)));
+        },
+    }];
+};