feat(editor): complete Wiki Compose P2 entry points and chat seed (#950)

server/api/src/__tests__/routes/composeSessionProjection.test.ts

@@ -0,0 +1,44 @@
+/**
+ * `composeSessionProjection` unit tests (#950).
+ */
+import { describe, expect, it } from "vitest";
+import { projectComposeStateValues } from "../../routes/composeSessionProjection.js";
+
+describe("projectComposeStateValues", () => {
+  it("projects a Brief interrupt from __interrupt__", () => {
+    const projection = projectComposeStateValues({
+      __interrupt__: [
+        {
+          value: {
+            kind: "human_review_brief",
+            questions: [{ id: "q1", question: "Scope?", required: false, options: [] }],
+            pageSnapshot: { pageId: "p1", title: "T", body: "", hasContent: false },
+          },
+        },
+      ],
+    });
+    expect(projection.phase).toBe("brief");
+    expect(projection.briefQuestions).toHaveLength(1);
+    expect(projection.pageSnapshot).toMatchObject({ title: "T" });
+  });
+
+  it("projects completion markdown from checkpoint values", () => {
+    const projection = projectComposeStateValues({
+      phase: "completed",
+      completion: {
+        markdown: "## A\n\nBody",
+        sections: [
+          {
+            sectionId: "sec-1",
+            heading: "A",
+            body: "Body",
+            citedSourceIds: [],
+            completedAt: "2026-01-01T00:00:00.000Z",
+          },
+        ],
+      },
+    });
+    expect(projection.completedMarkdown).toBe("## A\n\nBody");
+    expect(projection.draftedSections).toHaveLength(1);
+  });
+});

server/api/src/agents/graphs/wikiCompose/nodes/briefDialogue.ts

@@ -71,7 +71,11 @@ const SYSTEM_PROMPT =
   "make the article unwritable. Most questions should be optional.\n" +
   "Respond as JSON only.";
 
-function buildUserPrompt(title: string, body: string): string {
+function buildUserPrompt(
+  title: string,
+  body: string,
+  chatSeed?: { outline: string; conversationText: string; userSchema?: string } | null,
+): string {
   const parts: string[] = [`[Page title]`, title || "(no title yet)"];
   if (body.trim()) {
     parts.push(
@@ -83,6 +87,22 @@ function buildUserPrompt(title: string, body: string): string {
   } else {
     parts.push("", "(Page body is empty.)");
   }
+  if (chatSeed?.outline?.trim()) {
+    parts.push("", "[User-approved outline from chat]", chatSeed.outline.trim().slice(0, 2000));
+  }
+  if (chatSeed?.conversationText?.trim()) {
+    parts.push(
+      "",
+      "[Chat transcript excerpt]",
+      chatSeed.conversationText.trim().slice(0, 4000),
+      chatSeed.conversationText.length > 4000
+        ? `\n(…truncated; total ${chatSeed.conversationText.length} chars)`
+        : "",
+    );
+  }
+  if (chatSeed?.userSchema?.trim()) {
+    parts.push("", "[User wiki schema]", chatSeed.userSchema.trim().slice(0, 1500));
+  }
   return parts.join("\n");
 }
 
@@ -120,7 +140,10 @@ export async function briefDialogue(
   try {
     raw = await structured.invoke([
       { role: "system", content: SYSTEM_PROMPT },
-      { role: "user", content: buildUserPrompt(snapshot.title, snapshot.body) },
+      {
+        role: "user",
+        content: buildUserPrompt(snapshot.title, snapshot.body, state.chatSeed),
+      },
     ]);
   } catch {
     // Defensive fallback: if the LLM call fails, emit an empty Brief so the

server/api/src/agents/graphs/wikiCompose/state.ts

@@ -31,6 +31,7 @@ import type {
   ApprovedOutline,
   BriefQuestion,
   BriefResult,
+  ComposeChatSeed,
   ComposeCompletion,
   DraftedSection,
   OutlineSection,
@@ -95,6 +96,17 @@ export const WikiComposeState = Annotation.Root({
   ...BaseState.spec,
 
   // ── Brief phase ───────────────────────────────────────────────────────────
+  /**
+   * チャット由来 seed（outline + 会話）。AI Chat / Promote to Wiki からの
+   * 初回 `POST /run` input でセットする (#950)。
+   *
+   * Chat → Compose seed (outline + conversation). Set on the first `POST /run`
+   * input when the user arrives from AI Chat / Promote to Wiki (#950).
+   */
+  chatSeed: Annotation<ComposeChatSeed | null>({
+    reducer: (prev, next) => (next === undefined ? prev : next),
+    default: () => null,
+  }),
   /** Page snapshot loaded once at session start. */
   pageSnapshot: Annotation<PageSnapshot | null>({
     reducer: (prev, next) => (next === undefined ? prev : next),

server/api/src/agents/graphs/wikiCompose/types.ts

@@ -14,6 +14,20 @@ import type { Source } from "../../subgraphs/research/types.js";
 /** Re-exported here so orchestrator nodes can import everything from one barrel. */
 export type { Source };
 
+/**
+ * チャットから Compose に入ったときの任意 seed (#950)。
+ * 初回 `POST /run` の input とセッション行 `metadata` に載せる。
+ *
+ * Optional chat context seeded when entering Compose from AI Chat (#950).
+ * Passed on the first graph `input` and stored on the session row metadata.
+ */
+export interface ComposeChatSeed {
+  outline: string;
+  conversationText: string;
+  userSchema?: string;
+  conversationId?: string;
+}
+
 /**
  * Brief フェーズで Orchestrator が生成する 1 つの構造化質問。
  *

server/api/src/routes/composeSessionProjection.ts

@@ -0,0 +1,174 @@
+/**
+ * Project LangGraph checkpoint state into Compose UI slices (#950).
+ *
+ * `GET /compose-sessions/:id` が interrupted / completed 行を再開するとき、
+ * チェックポイントから Brief 質問・アウトライン等を復元する。
+ *
+ * Maps persisted graph state (including `__interrupt__`) into a JSON shape the
+ * frontend hook can merge without replaying `POST /run`.
+ */
+import { GRAPH_CONTEXT_CONFIG_KEY } from "../agents/core/types/graphContext.js";
+import type { GraphContext } from "../agents/core/types/graphContext.js";
+import { resolveCheckpointerForRun } from "../agents/core/checkpoint/index.js";
+import { getRegisteredGraph } from "../agents/registry/graphRegistry.js";
+import type { WikiComposeSessionStatus } from "../schema/wikiComposeSessions.js";
+
+/** Wire projection returned by `GET /compose-sessions/:id`. */
+export interface ComposeSessionUiProjection {
+  phase?: string;
+  briefQuestions?: unknown[];
+  pageSnapshot?: unknown;
+  pendingSources?: unknown[];
+  latestBatch?: unknown;
+  approvedSources?: unknown[];
+  outlineProposal?: unknown[];
+  draftedSections?: unknown[];
+  completedMarkdown?: string | null;
+}
+
+function phaseFromSessionRow(phase: string, status: WikiComposeSessionStatus): string {
+  if (status === "completed") return "completed";
+  if (phase.startsWith("brief")) return "brief";
+  if (phase.startsWith("research")) return "research";
+  if (phase.startsWith("structure")) return "structure";
+  if (phase.startsWith("draft")) return "draft";
+  return "brief";
+}
+
+/**
+ * Build UI projection from a LangGraph state snapshot (values + interrupts).
+ */
+export function projectComposeStateValues(
+  state: Record<string, unknown>,
+): ComposeSessionUiProjection {
+  const projection: ComposeSessionUiProjection = {};
+
+  if (Array.isArray(state.briefQuestions)) {
+    projection.briefQuestions = state.briefQuestions;
+  }
+  if (state.pageSnapshot && typeof state.pageSnapshot === "object") {
+    projection.pageSnapshot = state.pageSnapshot;
+  }
+  if (Array.isArray(state.pendingSources)) {
+    projection.pendingSources = state.pendingSources;
+  }
+  if (Array.isArray(state.batches) && state.batches.length > 0) {
+    projection.latestBatch = state.batches[state.batches.length - 1];
+  }
+  if (Array.isArray(state.approvedResearch)) {
+    projection.approvedSources = state.approvedResearch;
+  }
+  if (Array.isArray(state.outlineProposal) && state.outlineProposal.length > 0) {
+    projection.outlineProposal = state.outlineProposal;
+  } else {
+    const approved = state.approvedOutline as { sections?: unknown[] } | undefined;
+    if (approved?.sections?.length) {
+      projection.outlineProposal = approved.sections;
+    }
+  }
+
+  if (Array.isArray(state.draftedSections) && state.draftedSections.length > 0) {
+    projection.draftedSections = state.draftedSections;
+  }
+
+  const completion = state.completion;
+  if (completion && typeof completion === "object") {
+    const c = completion as { markdown?: string; sections?: unknown[] };
+    if (typeof c.markdown === "string") {
+      projection.completedMarkdown = c.markdown;
+    }
+    if (Array.isArray(c.sections)) {
+      projection.draftedSections = c.sections;
+    }
+  }
+
+  const interrupts = state.__interrupt__;
+  if (Array.isArray(interrupts) && interrupts.length > 0) {
+    const entry = interrupts[0];
+    const value =
+      entry && typeof entry === "object" ? (entry as { value?: unknown }).value : undefined;
+    if (value && typeof value === "object" && "kind" in value) {
+      const payload = value as {
+        kind: string;
+        questions?: unknown[];
+        pageSnapshot?: unknown;
+        batch?: unknown;
+        pendingSources?: unknown[];
+        outline?: unknown[];
+        approvedSources?: unknown[];
+      };
+      switch (payload.kind) {
+        case "human_review_brief":
+          if (payload.questions) projection.briefQuestions = payload.questions;
+          if (payload.pageSnapshot) projection.pageSnapshot = payload.pageSnapshot;
+          projection.phase = "brief";
+          break;
+        case "human_review_research":
+          if (payload.batch) projection.latestBatch = payload.batch;
+          if (payload.pendingSources) projection.pendingSources = payload.pendingSources;
+          projection.phase = "research";
+          break;
+        case "human_review_outline":
+          if (payload.outline) projection.outlineProposal = payload.outline;
+          if (payload.approvedSources) projection.approvedSources = payload.approvedSources;
+          projection.phase = "structure";
+          break;
+        default:
+          break;
+      }
+    }
+  }
+
+  if (typeof state.phase === "string") {
+    projection.phase = phaseFromSessionRow(state.phase, "interrupted");
+  }
+
+  return projection;
+}
+
+/**
+ * Load checkpoint projection for a compose session row, or `null` when unavailable.
+ */
+export async function loadComposeSessionProjection(input: {
+  sessionId: string;
+  pageId: string;
+  graphId: string;
+  status: WikiComposeSessionStatus;
+  phase: string;
+  context: GraphContext;
+}): Promise<ComposeSessionUiProjection | null> {
+  if (input.status !== "interrupted" && input.status !== "completed" && input.status !== "failed") {
+    return null;
+  }
+
+  const checkpointer = await resolveCheckpointerForRun();
+  if (checkpointer === false) return null;
+
+  const registered = getRegisteredGraph(input.graphId);
+  if (!registered) return null;
+
+  const graph = registered.factory({ checkpointer }) as {
+    getState?: (config: unknown) => Promise<{ values?: Record<string, unknown> } | undefined>;
+  };
+  if (typeof graph.getState !== "function") return null;
+
+  const config = {
+    configurable: {
+      thread_id: input.sessionId,
+      [GRAPH_CONTEXT_CONFIG_KEY]: input.context,
+    },
+  };
+
+  try {
+    const snap = await graph.getState(config);
+    const values = snap?.values;
+    if (!values || typeof values !== "object") return null;
+    const projection = projectComposeStateValues(values);
+    if (!projection.phase) {
+      projection.phase = phaseFromSessionRow(input.phase, input.status);
+    }
+    return projection;
+  } catch {
+    return null;
+  }
+}

server/api/src/routes/composeSessions.ts

@@ -61,6 +61,7 @@ import { RESEARCH_GRAPH_ID } from "../agents/subgraphs/research/index.js";
 import { WIKI_COMPOSE_GRAPH_ID } from "../agents/graphs/wikiCompose/index.js";
 import type { AppEnv } from "../types/index.js";
 import { persistOutcomeIfStillRunning } from "./composeSessionPersistence.js";
+import { loadComposeSessionProjection } from "./composeSessionProjection.js";
 
 /**
  * Translate the documented `body.input.kind === "additional_research"` shape
@@ -210,7 +211,28 @@ app.get("/:pageId/compose-sessions/:id", authRequired, async (c) => {
     .limit(1);
   if (!row) throw new HTTPException(404, { message: "Session not found" });
 
-  return c.json({ session: row });
+  const tier = await getUserTier(userId, db);
+  const projection = await loadComposeSessionProjection({
+    sessionId: row.id,
+    pageId: row.pageId,
+    graphId: row.graphId,
+    status: row.status,
+    phase: row.phase,
+    context: {
+      threadId: row.id,
+      sessionId: row.id,
+      userId,
+      userEmail: c.get("userEmail") ?? null,
+      pageId: row.pageId,
+      graphId: row.graphId,
+      backend: assertSupportedBackendP0(row.backend),
+      tier,
+      db,
+      feature: `wiki_compose:${row.graphId}`,
+    },
+  });
+
+  return c.json({ session: row, projection });
 });
 
 // ── POST /:id/run — SSE run ─────────────────────────────────────────────────

src/components/ai-chat/PromoteToWikiDialog.tsx

@@ -22,7 +22,7 @@ import { callAIService } from "@/lib/aiService";
 import { loadAISettings } from "@/lib/aiSettings";
 import { useCreatePage } from "@/hooks/usePageQueries";
 import { useWikiSchema } from "@/hooks/useWikiSchema";
-import type { PendingChatPageGenerationState } from "@/types/chatPageGeneration";
+import { navigateToWikiCompose } from "@/lib/wikiCompose/navigation";
 import { EntityRow } from "./EntityRow";
 
 /**
@@ -258,19 +258,18 @@ function PromoteToWikiDialogBody({
       if (!firstCreated) throw new Error("no pages created");
 
       const firstEntity = selectedEntities[created.indexOf(firstCreated)];
-      const pending: PendingChatPageGenerationState = {
-        outline: `- ${firstEntity.summary}`,
-        conversationText,
-        userSchema: schemaData?.content,
-        conversationId,
-      };
       toast({ title: t("aiChat.notifications.promoteSuccess") });
       onClose();
-      // Issue #889 Phase 3: `/pages/:id` 撤去のため `/notes/:noteId/:pageId` に遷移。
-      // Issue #889 Phase 3: route to `/notes/:noteId/:pageId` after `/pages/:id`
-      // was retired.
-      navigate(`/notes/${firstCreated.noteId}/${firstCreated.id}`, {
-        state: { pendingChatPageGeneration: pending },
+      navigateToWikiCompose({
+        navigate,
+        noteId: firstCreated.noteId,
+        pageId: firstCreated.id,
+        seed: {
+          outline: `- ${firstEntity.summary}`,
+          conversationText,
+          userSchema: schemaData?.content,
+          conversationId,
+        },
       });
     } catch {
       toast({ title: t("aiChat.notifications.promoteFailed"), variant: "destructive" });