feat: add Journal server documentation to DocDialog

Introduce a new documentation set for Journal server functionality,
including a dropdown selector in the DocDialog to switch between
"directives" and "journal" documentation modes.

src/components/DocDialog.tsx

@@ -7,6 +7,10 @@ import {
   onMount,
 } from "solid-js";
 import { docEntries, type DocEntry } from "./doc-data";
+import { journalDocEntries, type JournalDocEntry } from "./journal-doc-data";
+
+type DocSet = "directives" | "journal";
+type AnyEntry = DocEntry | JournalDocEntry;
 
 export interface DocDialogProps {
   isOpen: boolean;
@@ -14,17 +18,42 @@ export interface DocDialogProps {
 }
 
 const DocDialog: Component<DocDialogProps> = (props) => {
+  const [docSet, setDocSet] = createSignal<DocSet>("directives");
   const [selectedTag, setSelectedTag] = createSignal(docEntries[0]?.tag ?? "");
+  const [dropdownOpen, setDropdownOpen] = createSignal(false);
+  let dropdownRef!: HTMLDivElement;
+
+  const currentEntries = () =>
+    docSet() === "directives"
+      ? (docEntries as AnyEntry[])
+      : (journalDocEntries as AnyEntry[]);
 
   const selectedEntry = () =>
-    docEntries.find((e) => e.tag === selectedTag()) ?? docEntries[0];
+    currentEntries().find((e) => e.tag === selectedTag()) ??
+    currentEntries()[0];
+
+  const docSetLabel = () =>
+    docSet() === "directives" ? "指令组件文档" : "Journal 服务器文档";
 
   const handleKeyDown = (e: KeyboardEvent) => {
     if (e.key === "Escape") props.onClose();
   };
 
+  const switchDocSet = (set: DocSet) => {
+    setDocSet(set);
+    setDropdownOpen(false);
+    const entries = set === "directives" ? docEntries : journalDocEntries;
+    setSelectedTag(entries[0]?.tag ?? "");
+  };
+
   onMount(() => {
     document.addEventListener("keydown", handleKeyDown);
+    // Close dropdown on outside click
+    document.addEventListener("click", (e) => {
+      if (dropdownRef && !dropdownRef.contains(e.target as Node)) {
+        setDropdownOpen(false);
+      }
+    });
   });
 
   onCleanup(() => {
@@ -41,7 +70,47 @@ const DocDialog: Component<DocDialogProps> = (props) => {
       >
         <div class="bg-white rounded-lg shadow-2xl w-full max-w-4xl max-h-[85vh] flex flex-col overflow-hidden">
           <div class="flex items-center justify-between px-6 py-4 border-b border-gray-200 shrink-0">
-            <h2 class="text-lg font-bold text-gray-900">指令组件文档</h2>
+            <div ref={dropdownRef} class="relative">
+              <button
+                onClick={() => setDropdownOpen((v) => !v)}
+                class="text-lg font-bold text-gray-900 hover:text-blue-600 flex items-center gap-1"
+              >
+                {docSetLabel()}
+                <span class="text-gray-400 text-sm">▾</span>
+              </button>
+              <Show when={dropdownOpen()}>
+                <div class="absolute top-full left-0 mt-1 w-52 bg-white border border-gray-200 rounded shadow-lg z-50 py-1">
+                  <button
+                    onClick={() => switchDocSet("directives")}
+                    class={`w-full text-left px-3 py-2 text-sm hover:bg-gray-100 flex items-center gap-2 ${
+                      docSet() === "directives"
+                        ? "bg-blue-50 text-blue-700"
+                        : "text-gray-700"
+                    }`}
+                  >
+                    <span>📖</span>
+                    <span>指令组件文档</span>
+                    <Show when={docSet() === "directives"}>
+                      <span class="ml-auto text-blue-500">✓</span>
+                    </Show>
+                  </button>
+                  <button
+                    onClick={() => switchDocSet("journal")}
+                    class={`w-full text-left px-3 py-2 text-sm hover:bg-gray-100 flex items-center gap-2 ${
+                      docSet() === "journal"
+                        ? "bg-blue-50 text-blue-700"
+                        : "text-gray-700"
+                    }`}
+                  >
+                    <span>📋</span>
+                    <span>Journal 服务器文档</span>
+                    <Show when={docSet() === "journal"}>
+                      <span class="ml-auto text-blue-500">✓</span>
+                    </Show>
+                  </button>
+                </div>
+              </Show>
+            </div>
             <button
               onClick={props.onClose}
               class="text-gray-400 hover:text-gray-600 text-xl leading-none p-1"
@@ -53,7 +122,7 @@ const DocDialog: Component<DocDialogProps> = (props) => {
 
           <div class="flex flex-1 min-h-0">
             <nav class="w-48 shrink-0 border-r border-gray-200 overflow-y-auto p-3 bg-gray-50">
-              <For each={docEntries}>
+              <For each={currentEntries()}>
                 {(entry) => (
                   <button
                     onClick={() => setSelectedTag(entry.tag)}
@@ -64,7 +133,12 @@ const DocDialog: Component<DocDialogProps> = (props) => {
                     }`}
                   >
                     <span class="mr-2">{entry.icon}</span>
-                    <span class="font-mono text-xs">{`:${entry.tag}`}</span>
+                    <Show
+                      when={docSet() === "directives"}
+                      fallback={<span class="text-xs">{entry.title}</span>}
+                    >
+                      <span class="font-mono text-xs">{`:${entry.tag}`}</span>
+                    </Show>
                   </button>
                 )}
               </For>
@@ -83,7 +157,7 @@ const DocDialog: Component<DocDialogProps> = (props) => {
 };
 
 /** Single entry documentation content */
-const DocContent: Component<{ entry: DocEntry }> = (props) => {
+const DocContent: Component<{ entry: AnyEntry }> = (props) => {
   const e = props.entry;
 
   return (