fix(web): keep rectification sessions listed and persist chats on first send

Empty-consultation filtering is now session_type scoped so birth-time rows stay in the sidebar. Subtitles use updatedAt with sort/group/cursor. New chats stay local until the first send.

frontend/src/app/(app)/page.tsx

@@ -127,7 +127,6 @@ import {
   CONSULTATION_EVIDENCE_VALIDATION_LABEL,
   CONSULTATION_LOADING_METHOD_LABEL,
 } from "@/lib/consultation-activity-labels";
-import { writeChatSession } from "@/lib/chat-session-write-contract";
 import {
   SESSION_MISSING_NOTICE,
   clearLoginSessionReturn,
@@ -210,7 +209,6 @@ import {
   resolveLookupBootstrap,
   payloadCode,
   payloadMessage,
-  readDraftConsultation,
   readSessions,
   readStoredDailyStarlanguage,
   readStoredPendingConsultation,
@@ -228,7 +226,7 @@ import {
   starterHomeLandingNeedsConsultation,
   type BootstrapPhase,
 } from "@/lib/home-bootstrap";
-import { findReusableEmptyConsultation } from "@/lib/session-list-filter";
+import { isUnsavedEmptyConsultation } from "@/lib/session-list-filter";
 
 const BirthTimeRectification = dynamic(
   () => import("@/components/birth-time-rectification").then((module) => module.BirthTimeRectification),
@@ -931,31 +929,12 @@ export default function Home() {
         const parsedSessions = readSessions(listBoot.rawRows, nextModelCatalog);
         setSessionsCursor(listBoot.cursor);
         let nextSessions = parsedSessions.sessions.length > 0 ? parsedSessions.sessions : listBoot.sessions;
-        const draftSession = readDraftConsultation(listBoot.draftRow, nextModelCatalog);
-        if (draftSession && !nextSessions.some((session) => session.id === draftSession.id)) {
-          nextSessions = [...nextSessions, draftSession];
-        }
         if (nextSessions.length === 0) {
-          if (controller.signal.aborted) return;
-          const initialSession = createSession(
+          nextSessions = [createSession(
             nextModelCatalog?.defaultModelId ?? "",
             "consultation",
             chartSnapshotForSession("self", [], nextProfile),
-          );
-          if (nextModelCatalog) {
-            await writeChatSession(initialSession.id, {
-              title: initialSession.title,
-              theme: initialSession.theme,
-              model_id: initialSession.modelId,
-              messages: [],
-              session_type: initialSession.sessionType,
-              rectification_case_id: initialSession.rectificationCaseId,
-              chart_profile_id: initialSession.chartProfileId,
-              chart_profile_name: initialSession.chartProfileName,
-              chart_profile_role: initialSession.chartProfileRole,
-            }, "create");
-          }
-          nextSessions = [initialSession];
+          )];
         }
         nextSessions = applyLegacySessionControls(nextAccount.user.id, nextSessions);
 
@@ -1010,32 +989,13 @@ export default function Home() {
           bootstrapSelection.urlAction,
         );
         if (starterHomeLandingNeedsConsultation(nextSessions, landingSessionId, bootstrapSelection.urlAction)) {
-          const reusable = findReusableEmptyConsultation(nextSessions);
-          if (reusable) {
-            landingSessionId = reusable.id;
-          } else {
-            if (controller.signal.aborted) return;
-            const homeSession = createSession(
-              nextModelCatalog?.defaultModelId ?? "",
-              "consultation",
-              chartSnapshotForSession("self", [], nextProfile),
-            );
-            if (nextModelCatalog) {
-              await writeChatSession(homeSession.id, {
-                title: homeSession.title,
-                theme: homeSession.theme,
-                model_id: homeSession.modelId,
-                messages: [],
-                session_type: homeSession.sessionType,
-                rectification_case_id: homeSession.rectificationCaseId,
-                chart_profile_id: homeSession.chartProfileId,
-                chart_profile_name: homeSession.chartProfileName,
-                chart_profile_role: homeSession.chartProfileRole,
-              }, "create");
-            }
-            nextSessions = [homeSession, ...nextSessions];
-            landingSessionId = homeSession.id;
-          }
+          const homeSession = createSession(
+            nextModelCatalog?.defaultModelId ?? "",
+            "consultation",
+            chartSnapshotForSession("self", [], nextProfile),
+          );
+          nextSessions = [homeSession, ...nextSessions];
+          landingSessionId = homeSession.id;
         }
         const activeListed = nextSessions.find((session) => session.id === landingSessionId)
           ?? nextSessions[0];
@@ -1062,7 +1022,12 @@ export default function Home() {
         setActiveSessionId(landingSessionId);
         if (bootstrapSelection.clearStoredReturn) clearLoginSessionReturn();
         if (bootstrapSelection.urlAction === "replace-clear") writeSessionUrl(null, "replace");
-        if (bootstrapSelection.urlAction === "replace-selected") writeSessionUrl(bootstrapSelection.sessionId, "replace");
+        if (bootstrapSelection.urlAction === "replace-selected") {
+          const selected = nextSessions.find((session) => session.id === bootstrapSelection.sessionId);
+          if (!selected || !isUnsavedEmptyConsultation(selected)) {
+            writeSessionUrl(bootstrapSelection.sessionId, "replace");
+          }
+        }
         if (reservedConsultation?.status === "reserved") {
           const recoverySession = nextSessions.find((session) => session.id === reservedConsultation.sessionId);
           if (recoverySession) restoreConsultationRecovery(recoverySession, reservedConsultation.requestId, storedPending);

frontend/src/app/api/sessions/route.ts

@@ -16,22 +16,9 @@ import {
   parseSessionCursor,
   sessionCursorFilter,
 } from "@/lib/session-cursor";
-const SESSION_LIST_COLUMNS = "id,title,theme,model_id,session_type,rectification_case_id,chart_profile_id,chart_profile_name,chart_profile_role,created_at,updated_at,pinned,archived_at";
+import { applyArchiveFilter, excludeEmptyConsultations } from "@/lib/session-list-filter";
 
-function excludeEmptyConsultations<Query extends {
-  not: (column: string, operator: string, value: unknown) => Query;
-}>(query: Query): Query {
-  // Empty consultations are `messages = []`. Rectification rows keep an opening
-  // turn, so excluding empty arrays leaves them in the list (BUG-928).
-  return query.not("messages", "eq", []);
-}
-
-function applyArchiveFilter<Query extends {
-  is: (column: string, value: null) => Query;
-  not: (column: string, operator: string, value: null) => Query;
-}>(query: Query, archived: boolean): Query {
-  return archived ? query.not("archived_at", "is", null) : query.is("archived_at", null);
-}
+const SESSION_LIST_COLUMNS = "id,title,theme,model_id,session_type,rectification_case_id,chart_profile_id,chart_profile_name,chart_profile_role,updated_at,pinned,archived_at";
 
 export async function GET(request: Request) {
   try {
@@ -67,7 +54,6 @@ export async function GET(request: Request) {
     if (pageError) return NextResponse.json({ error: "聊天记录暂时无法读取" }, { status: 500 });
 
     let pinnedRows: typeof pageRows = [];
-    let draft: NonNullable<typeof pageRows>[number] | null = null;
     if (!cursor) {
       const { data: pinnedData, error: pinnedError } = await excludeEmptyConsultations(
         applyArchiveFilter(
@@ -83,26 +69,12 @@ export async function GET(request: Request) {
         .order("id", { ascending: false });
       if (pinnedError) return NextResponse.json({ error: "聊天记录暂时无法读取" }, { status: 500 });
       pinnedRows = pinnedData ?? [];
-      if (!archived) {
-        const { data: draftData, error: draftError } = await supabase
-          .from("chat_sessions")
-          .select(SESSION_LIST_COLUMNS)
-          .eq("user_id", user.id)
-          .eq("session_type", "consultation")
-          .eq("messages", [])
-          .is("archived_at", null)
-          .order("updated_at", { ascending: false })
-          .order("id", { ascending: false })
-          .limit(1);
-        if (draftError) return NextResponse.json({ error: "聊天记录暂时无法读取" }, { status: 500 });
-        draft = draftData?.[0] ?? null;
-      }
     }
 
     const nextCursor = nextSessionCursor(pageRows ?? [], limit);
     const page = (pageRows ?? []).slice(0, limit);
     const sessions = cursor ? page : [...(pinnedRows ?? []), ...page];
-    return NextResponse.json({ sessions, nextCursor, draft });
+    return NextResponse.json({ sessions, nextCursor });
   } catch (error) {
     if (isSupabaseConfigurationError(error)) {
       return NextResponse.json({ error: "数据库尚未配置", code: "DATABASE_NOT_CONFIGURED" }, { status: 503 });