feat(web): enable AI page data loading in web mode via HTTP endpoints

- Move assistant/skill MD parsers to @openchatlab/node-runtime (shared)
- Move BUILTIN_TOOL_CATALOG, provider-registry, model-catalog to @openchatlab/core
- Add /_web/ai/* HTTP routes for assistants, skills, LLM config, providers, models, tools
- Frontend shims: read ops call HTTP, write/agent ops return stubs
- Remove IS_ELECTRON guard in llm.ts to enable web-mode config loading
- Improve web-mode AI chat error message to be user-friendly

packages/node-runtime/package.json

@@ -6,6 +6,7 @@
   "main": "./src/index.ts",
   "types": "./src/index.ts",
   "dependencies": {
-    "@openchatlab/core": "workspace:*"
+    "@openchatlab/core": "workspace:*",
+    "gray-matter": "^4.0.3"
   }
 }

packages/node-runtime/src/ai/assistant-parser.ts

@@ -0,0 +1,56 @@
+/**
+ * 助手 MD 文件解析器（平台无关，Node.js 实现）
+ */
+
+import * as path from 'path'
+import matter from 'gray-matter'
+import type { AssistantConfig } from './types'
+
+export function parseAssistantFile(content: string, filePath: string): AssistantConfig | null {
+  try {
+    const { data: fm, content: body } = matter(content)
+
+    const id = fm.id ?? path.basename(filePath, '.md')
+    const name = fm.name
+    if (!name) return null
+
+    return {
+      id,
+      name,
+      systemPrompt: body.trim(),
+      presetQuestions: parseStringArray(fm.presetQuestions),
+      allowedBuiltinTools: parseStringArray(fm.allowedBuiltinTools),
+      builtinId: typeof fm.builtinId === 'string' ? fm.builtinId : undefined,
+      applicableChatTypes: parseChatTypes(fm.applicableChatTypes),
+      supportedLocales: parseStringArray(fm.supportedLocales),
+    }
+  } catch {
+    return null
+  }
+}
+
+export function serializeAssistant(config: AssistantConfig): string {
+  const fm: Record<string, unknown> = {
+    id: config.id,
+    name: config.name,
+  }
+
+  if (config.builtinId) fm.builtinId = config.builtinId
+  if (config.applicableChatTypes?.length) fm.applicableChatTypes = config.applicableChatTypes
+  if (config.supportedLocales?.length) fm.supportedLocales = config.supportedLocales
+  if (config.allowedBuiltinTools?.length) fm.allowedBuiltinTools = config.allowedBuiltinTools
+  if (config.presetQuestions?.length) fm.presetQuestions = config.presetQuestions
+
+  return matter.stringify(`\n${config.systemPrompt}\n`, fm)
+}
+
+function parseStringArray(raw: unknown): string[] {
+  if (Array.isArray(raw)) return raw.map(String).filter(Boolean)
+  return []
+}
+
+function parseChatTypes(raw: unknown): ('group' | 'private')[] | undefined {
+  if (!Array.isArray(raw)) return undefined
+  const valid = raw.filter((v): v is 'group' | 'private' => v === 'group' || v === 'private')
+  return valid.length > 0 ? valid : undefined
+}

packages/node-runtime/src/ai/index.ts

@@ -0,0 +1,9 @@
+/**
+ * AI 模块（Node.js 实现）
+ *
+ * 助手/技能 MD 文件解析器和共享类型。
+ */
+
+export type { AssistantConfig, AssistantSummary, SkillDef, SkillSummary } from './types'
+export { parseAssistantFile, serializeAssistant } from './assistant-parser'
+export { parseSkillFile, extractSkillId } from './skill-parser'

packages/node-runtime/src/ai/skill-parser.ts

@@ -0,0 +1,54 @@
+/**
+ * 技能 MD 文件解析器（平台无关，Node.js 实现）
+ */
+
+import * as path from 'path'
+import matter from 'gray-matter'
+import type { SkillDef } from './types'
+
+export function parseSkillFile(content: string, filePath: string): SkillDef | null {
+  try {
+    const { data: fm, content: prompt } = matter(content)
+
+    const id = fm.id ?? path.basename(filePath, '.md')
+    const name = fm.name
+    if (!name) return null
+
+    return {
+      id,
+      name,
+      description: fm.description ?? '',
+      tags: parseTags(fm.tags),
+      chatScope: validateChatScope(fm.chatScope),
+      tools: Array.isArray(fm.tools) ? fm.tools : [],
+      prompt: prompt.trim(),
+    }
+  } catch {
+    return null
+  }
+}
+
+export function extractSkillId(content: string, filePath: string): string | null {
+  try {
+    const { data: fm } = matter(content)
+    return fm.id ?? path.basename(filePath, '.md')
+  } catch {
+    return null
+  }
+}
+
+function parseTags(raw: unknown): string[] {
+  if (typeof raw === 'string') {
+    return raw
+      .split(',')
+      .map((t) => t.trim())
+      .filter(Boolean)
+  }
+  if (Array.isArray(raw)) return raw.map(String).filter(Boolean)
+  return []
+}
+
+function validateChatScope(raw: unknown): 'all' | 'group' | 'private' {
+  if (raw === 'group' || raw === 'private') return raw
+  return 'all'
+}

packages/node-runtime/src/ai/types.ts

@@ -0,0 +1,47 @@
+/**
+ * AI 模块共享类型（助手、技能的解析结构）
+ *
+ * 与 Electron 端 types.ts 的同名接口结构一致（TypeScript 结构类型兼容）。
+ */
+
+export interface AssistantConfig {
+  id: string
+  name: string
+  systemPrompt: string
+  presetQuestions: string[]
+  allowedBuiltinTools?: string[]
+  builtinId?: string
+  applicableChatTypes?: ('group' | 'private')[]
+  supportedLocales?: string[]
+}
+
+export interface AssistantSummary {
+  id: string
+  name: string
+  systemPrompt: string
+  presetQuestions: string[]
+  builtinId?: string
+  applicableChatTypes?: ('group' | 'private')[]
+  supportedLocales?: string[]
+}
+
+export interface SkillDef {
+  id: string
+  name: string
+  description: string
+  tags: string[]
+  chatScope: 'all' | 'group' | 'private'
+  prompt: string
+  tools: string[]
+  builtinId?: string
+}
+
+export interface SkillSummary {
+  id: string
+  name: string
+  description: string
+  tags: string[]
+  chatScope: 'all' | 'group' | 'private'
+  tools: string[]
+  builtinId?: string
+}

packages/node-runtime/src/index.ts

@@ -29,3 +29,7 @@ export {
   deleteDict,
   ensureDefaultDict,
 } from './nlp'
+
+// AI 助手/技能解析器
+export type { AssistantConfig, AssistantSummary, SkillDef, SkillSummary } from './ai'
+export { parseAssistantFile, serializeAssistant, parseSkillFile, extractSkillId } from './ai'