feat(kernel): complete tree-first graph tasks 074-080

wolai-frontend/src/app/(app)/documents/[id]/page.tsx

@@ -1,8 +1,13 @@
+import { headers } from "next/headers";
 import { notFound, redirect } from "next/navigation";
 import { DocumentShell } from "@/components/editor/document-shell";
 import type { PageFont, PageLayoutDensity, PageOptionsState, DocumentStats } from "@/types/page-options";
 import { isConvexEnabled } from "@/lib/convex/enabled";
 import { fetchDocumentMetaViaBridge } from "@/lib/documents/bridge-server";
+import { getAuthedConvexClient } from "@/lib/convex/route";
+import { buildDocumentBridgeContext, buildDocumentQueryEnvelope } from "@/lib/documents/bridge";
+import { buildPageSubtreeProjection } from "@/lib/documents/page-subtree";
+import { executeRustBridgeQueryTransport, resolveRustBridgeQueryPlan } from "@/lib/documents/rust-runtime";
 
 interface DocumentPageProps {
   params: Promise<{ id: string }>;
@@ -39,6 +44,84 @@ type DocumentMetaPayload = {
   todo_done_count?: number | null;
 };
 
+type DocumentContentPayload = {
+  content?: unknown;
+  revision?: number | null;
+  conflict_detection_key?: string | null;
+};
+
+async function fetchDocumentContentOnServer(input: {
+  documentId: string;
+  workspaceId: string;
+}): Promise<{
+  content: unknown;
+  revision: number | null;
+  conflictDetectionKey: string | null;
+}> {
+  try {
+    const headerList = await headers();
+    const requestHeaders = new Headers();
+    [
+      "cookie",
+      "authorization",
+      "x-request-id",
+      "x-trace-id",
+      "x-session-id",
+      "x-source-channel",
+      "x-source-client",
+      "user-agent",
+    ].forEach((name) => {
+      const value = headerList.get(name);
+      if (value) {
+        requestHeaders.set(name, value);
+      }
+    });
+
+    const request = new Request("http://mnote.local/documents/content", {
+      method: "GET",
+      headers: requestHeaders,
+    });
+    const { client } = await getAuthedConvexClient();
+    const bridgeContext = await buildDocumentBridgeContext({
+      request,
+      workspaceId: input.workspaceId,
+    });
+    const envelope = buildDocumentQueryEnvelope({
+      name: "documents.content.get",
+      payload: {
+        documentId: input.documentId,
+        workspaceId: input.workspaceId,
+      },
+    });
+    const plan = await resolveRustBridgeQueryPlan({
+      context: bridgeContext,
+      envelope,
+    });
+    const result = await executeRustBridgeQueryTransport<DocumentContentPayload | null>({
+      client,
+      plan,
+    });
+
+    return {
+      content: result?.content ?? null,
+      revision:
+        typeof result?.revision === "number" && Number.isInteger(result.revision)
+          ? result.revision
+          : 0,
+      conflictDetectionKey:
+        typeof result?.conflict_detection_key === "string" && result.conflict_detection_key.trim()
+          ? result.conflict_detection_key
+          : `${input.documentId}:0`,
+    };
+  } catch {
+    return {
+      content: null,
+      revision: null,
+      conflictDetectionKey: null,
+    };
+  }
+}
+
 export default async function DocumentPage({ params, searchParams }: DocumentPageProps) {
   const { id } = await params;
   const resolvedSearch = (await searchParams) ?? {};
@@ -83,6 +166,15 @@ export default async function DocumentPage({ params, searchParams }: DocumentPag
       todoTotal: doc.todo_total ?? doc.todo_total_count ?? 0,
       todoDone: doc.todo_done ?? doc.todo_done_count ?? 0,
     };
+    const initialDocumentContent = await fetchDocumentContentOnServer({
+      documentId: doc.id,
+      workspaceId: doc.workspace_id,
+    });
+    const initialPageSubtree = buildPageSubtreeProjection({
+      documentId: doc.id,
+      title: doc.title ?? "无标题",
+      content: initialDocumentContent.content,
+    });
 
     return (
       <div className="flex h-screen flex-col">
@@ -92,9 +184,10 @@ export default async function DocumentPage({ params, searchParams }: DocumentPag
             workspaceId={doc.workspace_id}
             title={doc.title ?? "无标题"}
             updatedAt={doc.updated_at}
-            initialContent={null}
-            initialContentRevision={null}
-            initialConflictDetectionKey={null}
+            initialContent={initialDocumentContent.content}
+            initialContentRevision={initialDocumentContent.revision}
+            initialConflictDetectionKey={initialDocumentContent.conflictDetectionKey}
+            initialPageSubtree={initialPageSubtree}
             initialOptions={initialOptions}
             initialStats={initialStats}
             openTableId={openTableId}