feat: land Event Lineage under the named evidence next action (v2.10.0)

CHANGELOG.d/2.10.0-land-evidence-event-lineage.md

@@ -0,0 +1,6 @@
+# 2.10.0 Land Event Lineage under the named evidence next action
+
+Open Public post from the landed Demo Corp members and Event Lineage
+for Linked post sits under the evidence next action, ahead of the
+input. Home list opens still keep a single Event Lineage on the
+opened post.

CHANGELOG.md

@@ -4,6 +4,16 @@ All notable changes to this project are documented here. Format follows
 [Keep a Changelog](https://keepachangelog.com/en/1.1.0/); versioning follows
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.10.0] - 2026-08-17
+
+### Added
+
+- Opening Public post from the landed Demo Corp members now puts Event
+  Lineage for the cited Linked post immediately under the named
+  evidence next action, ahead of the chat input. Home list opens do
+  not add that section. No TEPP theta is invented. No cutoff body is
+  invented (ADR 0016).
+
 ## [2.9.0] - 2026-08-17
 
 ### Added

CLAUDE.md

@@ -67,6 +67,8 @@ popup lands Ask about this lineage. After landed chat, the popup names
 the first Ask. After that next action, the popup lands the first Ask
 answer. After landed first Ask answer, the popup names the first
 cited source. After that next action, the popup lands the first cited
-evidence. Changing the week first still
+evidence. After landed cited evidence, the popup names Event Lineage
+on that post. After that next action, the popup lands Event Lineage
+on the cited post. Changing the week first still
 focuses the report period field. Mean θ stays on the period-report
 panel.

frontend/package.json

@@ -1,7 +1,7 @@
 {
   "name": "frontend",
   "private": true,
-  "version": "2.9.0",
+  "version": "2.10.0",
   "type": "module",
   "scripts": {
     "dev": "vite",

frontend/src/App.test.tsx

@@ -1348,6 +1348,15 @@ describe("App, authenticated", () => {
           }),
         );
       }
+      if (url.endsWith("/api/posts/post-2/lineage")) {
+        return Promise.resolve(
+          jsonResponse({
+            post_id: "post-2",
+            direct: [{ post_id: "post-1", post_title: "Public post" }],
+            indirect: [],
+          }),
+        );
+      }
       if (url.endsWith("/api/posts/post-1/chat") && method === "GET") {
         return Promise.resolve(
           jsonResponse({
@@ -1506,6 +1515,7 @@ describe("App, authenticated", () => {
     expect(screen.queryByRole("status", { name: "Ask citation next action" })).not.toBeInTheDocument();
     expect(screen.queryByRole("status", { name: "Evidence next action" })).not.toBeInTheDocument();
     expect(screen.queryByRole("complementary", { name: "Evidence" })).not.toBeInTheDocument();
+    expect(screen.queryByText("직접")).not.toBeInTheDocument();
     expect(screen.queryByText("Related to Ada West")).not.toBeInTheDocument();
     expect(screen.queryByText("Related to Priya Nair")).not.toBeInTheDocument();
     const popup = document.querySelector(".popup-panel");
@@ -2489,6 +2499,22 @@ describe("App, authenticated", () => {
       expect(evidenceNext.compareDocumentPosition(askInput) & Node.DOCUMENT_POSITION_FOLLOWING).not.toBe(
         0,
       );
+      const lineageHeadings = within(popup as HTMLElement).getAllByRole("heading", {
+        name: "Event Lineage",
+      });
+      expect(lineageHeadings).toHaveLength(2);
+      const landedLineage = lineageHeadings[1];
+      expect(
+        evidenceNext.compareDocumentPosition(landedLineage) & Node.DOCUMENT_POSITION_FOLLOWING,
+      ).not.toBe(0);
+      expect(
+        landedLineage.compareDocumentPosition(askInput) & Node.DOCUMENT_POSITION_FOLLOWING,
+      ).not.toBe(0);
+      expect(landedLineage.compareDocumentPosition(affiliate) & Node.DOCUMENT_POSITION_FOLLOWING).not.toBe(
+        0,
+      );
+      expect(await within(popup as HTMLElement).findByText("직접")).toBeInTheDocument();
+      expect(screen.getByText("직접").closest("li")).toHaveTextContent("Public post");
       await waitFor(() => expect(document.getElementById("post-ask")).toHaveFocus());
     } finally {
       HTMLElement.prototype.scrollIntoView = originalScrollIntoView;
@@ -2670,7 +2696,10 @@ describe("App, authenticated", () => {
     fetchMock.releaseMe();
     expect(
       await screen.findByRole("button", { name: "Request a lineage reconstruction" }),
-    ).toBeEnabled();
+    ).toBeInTheDocument();
+    await waitFor(() =>
+      expect(screen.getByRole("button", { name: "Request a lineage reconstruction" })).toBeEnabled(),
+    );
     expect(
       await screen.findByRole("combobox", { name: "Corporate entity to reconstruct" }),
     ).toBeInTheDocument();
@@ -2864,6 +2893,17 @@ describe("App, authenticated", () => {
     expect(await screen.findByRole("status", { name: "Evidence next action" })).toHaveTextContent(
       "Linked post evidence is current. Read Event Lineage on that post next.",
     );
+    const lineageHeadings = within(popup as HTMLElement).getAllByRole("heading", {
+      name: "Event Lineage",
+    });
+    expect(lineageHeadings).toHaveLength(2);
+    expect(
+      screen.getByRole("status", { name: "Evidence next action" }).compareDocumentPosition(
+        lineageHeadings[1],
+      ) & Node.DOCUMENT_POSITION_FOLLOWING,
+    ).not.toBe(0);
+    expect(await within(popup as HTMLElement).findByText("직접")).toBeInTheDocument();
+    expect(screen.getByText("직접").closest("li")).toHaveTextContent("Public post");
     await waitFor(() => expect(document.getElementById("post-ask")).toHaveFocus());
   });
 

frontend/src/App.tsx

@@ -165,17 +165,20 @@ function ChatPanel({
   postId,
   accessToken,
   nameFirstAsk,
+  onSelectPost,
 }: {
   postId: string;
   accessToken: string;
   nameFirstAsk?: boolean;
+  onSelectPost?: (postId: string) => void;
 }) {
   const [question, setQuestion] = useState("");
   const [exchanges, setExchanges] = useState<ChatExchange[]>([]);
   const [answer, setAnswer] = useState<ChatAnswer | null>(null);
   const [error, setError] = useState<string | null>(null);
   const [loading, setLoading] = useState(false);
   const [evidencePostId, setEvidencePostId] = useState<string | null>(null);
+  const [evidenceLineage, setEvidenceLineage] = useState<PostLineage | null>(null);
   const [seededOnly, setSeededOnly] = useState(false);
 
   useEffect(() => {
@@ -222,6 +225,31 @@ function ChatPanel({
     (firstCitedPostId ? firstCitedPostId.slice(0, 8) : null);
   const landedEvidencePostId = nameFirstAsk ? (evidencePostId ?? firstCitedPostId) : null;
 
+  useEffect(() => {
+    if (!landedEvidencePostId) {
+      setEvidenceLineage(null);
+      return;
+    }
+    let cancelled = false;
+    setEvidenceLineage(null);
+    fetchPostLineage(accessToken, landedEvidencePostId)
+      .then((row) => {
+        if (!cancelled) setEvidenceLineage(row);
+      })
+      .catch(() => {
+        if (!cancelled) {
+          setEvidenceLineage({
+            post_id: landedEvidencePostId,
+            direct: [],
+            indirect: [],
+          });
+        }
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [accessToken, landedEvidencePostId]);
+
   return (
     <section className="popup-section chat-section">
       <h3 id="post-ask" tabIndex={-1}>
@@ -267,6 +295,19 @@ function ChatPanel({
           {landedEvidenceNextAction(firstCitedTitle)}
         </p>
       ) : null}
+      {nameFirstAsk && landedEvidencePostId ? (
+        <section className="popup-section">
+          <h3 id="post-evidence-event-lineage" tabIndex={-1}>
+            Event Lineage
+          </h3>
+          <EventLineageSection
+            lineage={evidenceLineage}
+            graph={null}
+            postId={landedEvidencePostId}
+            onSelectPost={onSelectPost}
+          />
+        </section>
+      ) : null}
       {!seededOnly && (
         <div className="chat-input-row">
           <input
@@ -1014,7 +1055,12 @@ function KeymanPanel({
         </p>
       ) : null}
       {afterList && landFirstRelated && landedRelatedName && landedRelated !== null ? (
-        <ChatPanel postId={postId} accessToken={accessToken} nameFirstAsk />
+        <ChatPanel
+          postId={postId}
+          accessToken={accessToken}
+          nameFirstAsk
+          onSelectPost={onSelectPost}
+        />
       ) : null}
     </>
   );

lineageweave/__init__.py

@@ -55,4 +55,4 @@
     "sentence_excerpts",
 ]
 
-__version__ = "2.9.0"
+__version__ = "2.10.0"

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "lineageweave"
-version = "2.9.0"
+version = "2.10.0"
 description = "Reconstructs git-branch-style lineage DAGs from scattered short records using multi-channel score fusion and LLM adjudication."
 readme = "README.md"
 license = { text = "MIT" }