diff --git a/apps/control-station/src/components/ObservationSessionSelect.tsx b/apps/control-station/src/components/ObservationSessionSelect.tsx
index 1d0bbd6..f030c71 100644
--- a/apps/control-station/src/components/ObservationSessionSelect.tsx
+++ b/apps/control-station/src/components/ObservationSessionSelect.tsx
@@ -122,6 +122,7 @@ export function ObservationSessionSelect({
   const [deleteTarget, setDeleteTarget] = useState<ObservationSessionSummary | null>(null);
   const sessions = useObservationSessions({
     limit,
+    scope: "source",
     replayEnabled: blockedReason === null,
     onReplayBegin,
     onReplayAccepted,
@@ -321,14 +322,13 @@ export function ObservationSessionArchive({
   const [deleteTarget, setDeleteTarget] = useState<ObservationSessionSummary | null>(null);
   const sessions = useObservationSessions({
     limit,
+    scope: labsOnly ? "laboratory" : "source",
     replayEnabled: blockedReason === null,
     onReplayBegin,
     onReplayAccepted,
     onReplaySettled,
   });
-  const items = labsOnly
-    ? sessions.items.filter((session) => session.lab !== null)
-    : sessions.items;
+  const items = sessions.items;
 
   return <>
     <section
diff --git a/apps/control-station/src/core/laboratory/e29Evidence.ts b/apps/control-station/src/core/laboratory/e29Evidence.ts
index 0066a72..49c682f 100644
--- a/apps/control-station/src/core/laboratory/e29Evidence.ts
+++ b/apps/control-station/src/core/laboratory/e29Evidence.ts
@@ -15,6 +15,8 @@ export interface E29EvidenceResult {
     frameCount: number;
     timelineStartSeconds: number;
     timelineEndSeconds: number;
+    profileId: string;
+    producerSha256: string;
   };
   metrics: {
     frames: {
@@ -208,6 +210,7 @@ function parseReviewFrame(value: unknown): E29ReviewFrame {
 function parseEvidenceResult(value: unknown): E29EvidenceResult {
   const source = record(value, "E29 result");
   const identity = record(source.identity, "E29 identity");
+  const profile = record(identity.profile, "E29 identity.profile");
   const metrics = record(source.metrics, "E29 metrics");
   const frames = record(metrics.frames, "E29 metrics.frames");
   const semantic = record(
@@ -253,6 +256,11 @@ function parseEvidenceResult(value: unknown): E29EvidenceResult {
         identity.timeline_end_seconds,
         "E29 identity.timeline_end_seconds",
       ),
+      profileId: stringValue(profile.profile_id, "E29 identity.profile.profile_id"),
+      producerSha256: stringValue(
+        identity.producer_sha256,
+        "E29 identity.producer_sha256",
+      ),
     },
     metrics: {
       frames: {
diff --git a/apps/control-station/src/core/lidar/localSurface.ts b/apps/control-station/src/core/lidar/localSurface.ts
index dfeb0f5..23a6dfc 100644
--- a/apps/control-station/src/core/lidar/localSurface.ts
+++ b/apps/control-station/src/core/lidar/localSurface.ts
@@ -22,6 +22,12 @@ export interface LidarLocalSurfaceModel {
   sessionId: string;
   sourcePackId: string;
   status: "diagnostic-only";
+  method: {
+    executionClass: "deterministic";
+    pipelineId: string;
+    algorithm: string;
+    producerSha256: string;
+  };
   source: {
     frameCount: number;
     availableLidarFrames: number;
@@ -562,6 +568,8 @@ function temporalQualification(
 function model(value: unknown): LidarLocalSurfaceModel {
   const source = record(value, "LiDAR local-surface model");
   const sourceEvidence = record(source.source, "source");
+  const surfaceModel = record(source.surface_model, "surface_model");
+  const surfaceProfile = record(surfaceModel.profile, "surface_model.profile");
   const metrics = record(source.metrics, "metrics");
   const frames = record(metrics.frames, "metrics.frames");
   if (
@@ -611,6 +619,19 @@ function model(value: unknown): LidarLocalSurfaceModel {
     sessionId: text(source.session_id, "session_id", SAFE_ID),
     sourcePackId: text(source.source_pack_id, "source_pack_id", SAFE_PACK_ID),
     status: "diagnostic-only",
+    method: {
+      executionClass: "deterministic",
+      pipelineId: text(
+        surfaceProfile.profile_id,
+        "surface_model.profile.profile_id",
+      ),
+      algorithm: text(surfaceModel.kind, "surface_model.kind"),
+      producerSha256: text(
+        source.producer_sha256,
+        "producer_sha256",
+        /^[a-f0-9]{64}$/,
+      ),
+    },
     source: {
       frameCount: integer(sourceEvidence.frame_count, "source.frame_count"),
       availableLidarFrames: integer(
diff --git a/apps/control-station/src/core/observation/sessionArchive.ts b/apps/control-station/src/core/observation/sessionArchive.ts
index 7285465..9fe5c35 100644
--- a/apps/control-station/src/core/observation/sessionArchive.ts
+++ b/apps/control-station/src/core/observation/sessionArchive.ts
@@ -9,6 +9,8 @@ export type ObservationSessionStatus =
   | "interrupted"
   | "failed";
 
+export type ObservationSessionScope = "all" | "source" | "laboratory";
+
 export interface ObservationLabInstance {
   labId: string;
   sourceSessionId: string;
@@ -1077,15 +1079,21 @@ function requirePreparationEtag(
 export async function fetchObservationSessionCatalog({
   signal,
   limit,
+  scope = "all",
   fetcher = globalThis.fetch,
 }: {
   signal?: AbortSignal;
   limit?: number;
+  scope?: ObservationSessionScope;
   fetcher?: ObservationSessionFetch;
 } = {}): Promise<ObservationSessionCatalog> {
-  const query = Number.isInteger(limit) && Number(limit) >= 1 && Number(limit) <= 100
-    ? `?limit=${Number(limit)}`
-    : "";
+  const queryParameters = new URLSearchParams();
+  if (Number.isInteger(limit) && Number(limit) >= 1 && Number(limit) <= 100) {
+    queryParameters.set("limit", String(Number(limit)));
+  }
+  if (scope !== "all") queryParameters.set("scope", scope);
+  const serializedQuery = queryParameters.toString();
+  const query = serializedQuery ? `?${serializedQuery}` : "";
   let response: Response;
   try {
     response = await fetcher(`/api/v1/observation-sessions${query}`, {
diff --git a/apps/control-station/src/core/observation/useObservationSessions.ts b/apps/control-station/src/core/observation/useObservationSessions.ts
index 5fa1400..3b9a532 100644
--- a/apps/control-station/src/core/observation/useObservationSessions.ts
+++ b/apps/control-station/src/core/observation/useObservationSessions.ts
@@ -9,6 +9,7 @@ import {
   type ObservationSessionFetch,
   type ObservationSessionPreparation,
   type ObservationSessionReplayLaunch,
+  type ObservationSessionScope,
   type ObservationSessionSummary,
 } from "./sessionArchive";
 
@@ -369,12 +370,14 @@ export function clearObservationReplayPreparation(
 
 export function useObservationSessions({
   limit = 100,
+  scope = "all",
   replayEnabled = true,
   onReplayBegin,
   onReplayAccepted,
   onReplaySettled,
 }: {
   limit?: number;
+  scope?: ObservationSessionScope;
   replayEnabled?: boolean;
   /** Called only after the archive is ready, immediately before replacing the old viewer. */
   onReplayBegin?: (
@@ -425,7 +428,10 @@ export function useObservationSessions({
     const sequence = ++catalogSequence.current;
     if (foreground) setState("loading");
     try {
-      const catalog = await fetchObservationSessionCatalog({ limit: safeLimit });
+      const catalog = await fetchObservationSessionCatalog({
+        limit: safeLimit,
+        scope,
+      });
       if (!mounted.current || sequence !== catalogSequence.current) return false;
       setItems(catalog.items.slice(0, safeLimit));
       setState("ready");
@@ -437,7 +443,7 @@ export function useObservationSessions({
       setError(errorMessage(loadError));
       return false;
     }
-  }, [safeLimit]);
+  }, [safeLimit, scope]);
 
   const refresh = useCallback(() => loadCatalog(true), [loadCatalog]);
 
diff --git a/apps/control-station/src/styles/workspaces.css b/apps/control-station/src/styles/workspaces.css
index ee6d16d..fef09fe 100644
--- a/apps/control-station/src/styles/workspaces.css
+++ b/apps/control-station/src/styles/workspaces.css
@@ -2466,6 +2466,7 @@
 }
 
 .laboratory-task,
+.laboratory-method,
 .laboratory-result-summary {
   border-radius: 1rem;
   background: rgb(255 255 255 / 0.025);
@@ -2473,6 +2474,7 @@
 }
 
 .laboratory-task > header,
+.laboratory-method > header,
 .laboratory-result-summary > header {
   display: flex;
   align-items: flex-start;
@@ -2483,12 +2485,16 @@
 .laboratory-task h2,
 .laboratory-task p,
 .laboratory-task dl,
+.laboratory-method h2,
+.laboratory-method p,
+.laboratory-method ul,
 .laboratory-result-summary h2,
 .laboratory-result-summary p {
   margin: 0;
 }
 
 .laboratory-task h2,
+.laboratory-method h2,
 .laboratory-result-summary h2 {
   margin-top: 0.3rem;
   color: var(--nodedc-text-primary);
@@ -2497,6 +2503,7 @@
 }
 
 .laboratory-task p,
+.laboratory-method p,
 .laboratory-result-summary > p {
   max-width: 66rem;
   margin-top: 0.38rem;
@@ -2505,6 +2512,75 @@
   line-height: 1.55;
 }
 
+.laboratory-method__summary {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 0.4rem;
+  margin-top: 0.9rem;
+}
+
+.laboratory-method__summary > div {
+  display: grid;
+  gap: 0.25rem;
+  border-radius: 0.75rem;
+  background: rgb(255 255 255 / 0.035);
+  padding: 0.7rem;
+}
+
+.laboratory-method__summary span,
+.laboratory-method li > span,
+.laboratory-method small {
+  color: var(--nodedc-text-muted);
+  font-size: 0.54rem;
+}
+
+.laboratory-method__summary strong {
+  color: var(--nodedc-text-primary);
+  font-size: 0.7rem;
+}
+
+.laboratory-method ul {
+  display: grid;
+  gap: 0.35rem;
+  margin-top: 0.55rem;
+  padding: 0;
+  list-style: none;
+}
+
+.laboratory-method li {
+  display: grid;
+  grid-template-columns: 5.5rem minmax(0, 1fr) auto;
+  align-items: center;
+  gap: 0.75rem;
+  border-radius: 0.75rem;
+  background: rgb(255 255 255 / 0.025);
+  padding: 0.62rem 0.7rem;
+}
+
+.laboratory-method li > span {
+  text-transform: uppercase;
+}
+
+.laboratory-method li > div {
+  display: grid;
+  min-width: 0;
+  gap: 0.15rem;
+}
+
+.laboratory-method li strong {
+  overflow: hidden;
+  color: var(--nodedc-text-primary);
+  font-size: 0.66rem;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.laboratory-method code {
+  color: var(--nodedc-text-secondary);
+  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
+  font-size: 0.54rem;
+}
+
 .laboratory-task dl {
   display: grid;
   grid-template-columns: repeat(4, minmax(0, 1fr));
diff --git a/apps/control-station/src/workspaces/Workspaces.tsx b/apps/control-station/src/workspaces/Workspaces.tsx
index 5bc1318..a2f5ccf 100644
--- a/apps/control-station/src/workspaces/Workspaces.tsx
+++ b/apps/control-station/src/workspaces/Workspaces.tsx
@@ -1204,6 +1204,117 @@ interface LaboratoryOption<T extends string> {
   label: string;
 }
 
+type LaboratoryExecutionClass = "deterministic" | "ai-inference" | "hybrid";
+type LaboratoryMethodCompleteness = "complete" | "legacy-partial";
+type LaboratoryEvidenceKind = "recorded-replay" | "diagnostic-model";
+
+interface LaboratoryMethodComponent {
+  kind: "source" | "tool" | "model" | "algorithm" | "runtime";
+  name: string;
+  version: string;
+  role: string;
+  identitySha256: string | null;
+}
+
+interface LaboratoryMethod {
+  completeness: LaboratoryMethodCompleteness;
+  executionClass: LaboratoryExecutionClass;
+  pipelineId: string;
+  components: readonly LaboratoryMethodComponent[];
+}
+
+function digestFromContentId(value: string | null | undefined): string | null {
+  const digest = value?.split("-").at(-1) ?? "";
+  return /^[a-f0-9]{64}$/.test(digest) ? digest : null;
+}
+
+function publishedLaboratoryMethod(
+  session: ObservationSessionSummary,
+): LaboratoryMethod {
+  const method = session.lab?.provenance.method;
+  if (method && typeof method === "object" && !Array.isArray(method)) {
+    const value = method as Record<string, unknown>;
+    const rawComponents = Array.isArray(value.components) ? value.components : [];
+    const components: LaboratoryMethodComponent[] = rawComponents.flatMap((component) => {
+      if (!component || typeof component !== "object" || Array.isArray(component)) return [];
+      const item = component as Record<string, unknown>;
+      const kind = item.kind;
+      if (
+        kind !== "source"
+        && kind !== "tool"
+        && kind !== "model"
+        && kind !== "algorithm"
+        && kind !== "runtime"
+      ) return [];
+      if (
+        typeof item.name !== "string"
+        || typeof item.version !== "string"
+        || typeof item.role !== "string"
+      ) return [];
+      return [{
+        kind: kind as LaboratoryMethodComponent["kind"],
+        name: item.name,
+        version: item.version,
+        role: item.role,
+        identitySha256: typeof item.identity_sha256 === "string"
+          ? item.identity_sha256
+          : null,
+      }];
+    });
+    const executionClass = value.execution_class;
+    const completeness = value.completeness;
+    if (
+      components.length
+      && typeof value.pipeline_id === "string"
+      && (
+        executionClass === "deterministic"
+        || executionClass === "ai-inference"
+        || executionClass === "hybrid"
+      )
+      && (completeness === "complete" || completeness === "legacy-partial")
+    ) {
+      return {
+        completeness,
+        executionClass,
+        pipelineId: value.pipeline_id,
+        components,
+      };
+    }
+  }
+
+  const resultKind = session.lab?.resultKind ?? "unknown";
+  const algorithmNames: Record<string, string> = {
+    "e10-integrated-perception": "Camera semantics + LiDAR metric fusion",
+    "e21-realtime-envelope": "Bounded real-time perception replay",
+    "e22-temporal-stability": "Temporal 2D/3D/semantic stabilization",
+    "e23-inline-temporal-stability": "Inline warm-worker stabilization",
+    "e24-world-motion": "World-frame motion tracking",
+    "e25-persistent-support-motion": "Persistent occupied-support tracking",
+    "e26-camera-ego-motion-fusion": "KB4 ego-motion + persistent LiDAR support",
+  };
+  return {
+    completeness: "legacy-partial",
+    executionClass: "hybrid",
+    pipelineId: resultKind,
+    components: [
+      {
+        kind: "source",
+        name: session.lab?.sourceResultId ?? session.lab?.sourceSessionId ?? session.id,
+        version: "immutable source evidence",
+        role: "read-only input",
+        identitySha256: digestFromContentId(session.lab?.sourceResultId),
+      },
+      {
+        kind: "algorithm",
+        name: algorithmNames[resultKind] ?? resultKind,
+        version: resultKind,
+        role: "laboratory derivative",
+        identitySha256: session.lab?.configSha256 ?? null,
+      },
+    ],
+  };
+}
+
 function LaboratorySelector<T extends string>({
   eyebrow,
   title,
@@ -1285,17 +1396,20 @@ function LaboratoryTask({
 function LaboratoryEvidence({
   eyebrow,
   title,
+  kind,
   resizable = false,
   children,
 }: {
   eyebrow: string;
   title: string;
+  kind: LaboratoryEvidenceKind;
   resizable?: boolean;
   children: ReactNode;
 }) {
   return (
     <section
       className="lab-result-surface"
+      data-evidence-kind={kind}
       data-resizable={resizable ? "true" : undefined}
     >
       <header>
@@ -1309,13 +1423,69 @@ function LaboratoryEvidence({
   );
 }
 
+function LaboratoryMethodCard({ method }: { method: LaboratoryMethod }) {
+  const complete = method.completeness === "complete";
+  const executionLabels: Record<LaboratoryExecutionClass, string> = {
+    deterministic: "Детерминированный",
+    "ai-inference": "AI inference",
+    hybrid: "Гибридный",
+  };
+  return (
+    <section className="laboratory-method">
+      <header>
+        <div>
+          <span className="section-eyebrow">МЕТОД И ВОСПРОИЗВОДИМОСТЬ</span>
+          <h2>{method.pipelineId}</h2>
+          <p>
+            Зафиксированы вычислительный класс, инструменты, модели и алгоритмы.
+            {complete
+              ? " Идентичности достаточны для повторного запуска."
+              : " Это legacy-прогон: отсутствующие исторические версии не восстановлены задним числом."}
+          </p>
+        </div>
+        <StatusBadge tone={complete ? "success" : "warning"}>
+          {complete ? "Метод полный" : "Legacy · частично"}
+        </StatusBadge>
+      </header>
+      <div className="laboratory-method__summary">
+        <div>
+          <span>Класс вычисления</span>
+          <strong>{executionLabels[method.executionClass]}</strong>
+        </div>
+        <div>
+          <span>Компонентов</span>
+          <strong>{method.components.length}</strong>
+        </div>
+      </div>
+      <ul>
+        {method.components.map((component, index) => (
+          <li key={`${component.kind}:${component.name}:${index}`}>
+            <span>{component.kind}</span>
+            <div>
+              <strong>{component.name}</strong>
+              <small>{component.role} · {component.version}</small>
+            </div>
+            <code>
+              {component.identitySha256
+                ? component.identitySha256.slice(0, 12)
+                : "identity не зафиксирована"}
+            </code>
+          </li>
+        ))}
+      </ul>
+    </section>
+  );
+}
+
 function LaboratoryWorkTemplate({
   task,
+  method,
   evidence,
   result = null,
   details = null,
 }: {
   task: ReactNode;
+  method: ReactNode;
   evidence: ReactNode;
   result?: ReactNode;
   details?: ReactNode;
@@ -1323,6 +1493,7 @@ function LaboratoryWorkTemplate({
   return (
     <div className="laboratory-work-template">
       {task}
+      {method}
       {evidence}
       {result}
       {details}
@@ -1406,10 +1577,45 @@ function E29LaboratoryResult({
         ]}
         />
       )}
+      method={(
+        <LaboratoryMethodCard
+          method={{
+            completeness: "complete",
+            executionClass: "hybrid",
+            pipelineId: result.identity.profileId,
+            components: [
+              {
+                kind: "source",
+                name: result.linkedEvidence.sourceResultId,
+                version: "camera-first semantic observations",
+                role: "semantic identity and class",
+                identitySha256: digestFromContentId(result.linkedEvidence.sourceResultId),
+              },
+              {
+                kind: "algorithm",
+                name: "Camera/LiDAR local-surface validation",
+                version: result.identity.profileId,
+                role: "range, occupied support and conflict classification",
+                identitySha256: result.identity.producerSha256,
+              },
+              {
+                kind: "model",
+                name: result.linkedEvidence.localSurfaceModelId,
+                version: "L2.6 local surface",
+                role: "independent metric geometry",
+                identitySha256: digestFromContentId(
+                  result.linkedEvidence.localSurfaceModelId,
+                ),
+              },
+            ],
+          }}
+        />
+      )}
       evidence={(
         <LaboratoryEvidence
           eyebrow="ИСХОДНЫЕ ДАННЫЕ"
           title="LiDAR, траектория и камера RAVNOVES00"
+          kind="recorded-replay"
           resizable
         >
         {replayReady ? (
@@ -1592,10 +1798,14 @@ function PublishedLaboratoryResult({
         ]}
         />
       )}
+      method={(
+        <LaboratoryMethodCard method={publishedLaboratoryMethod(session)} />
+      )}
       evidence={(
         <LaboratoryEvidence
           eyebrow="ВИЗУАЛЬНОЕ ДОКАЗАТЕЛЬСТВО"
           title="Исходная запись выбранной лабораторной работы"
+          kind="recorded-replay"
           resizable
         >
         {replayReady ? (
@@ -1900,10 +2110,43 @@ function LabArchiveWorkspace(props: WorkspaceRendererProps) {
               ]}
               />
             )}
+            method={(
+              <LaboratoryMethodCard
+                method={{
+                  completeness: "complete",
+                  executionClass: e28Model?.method.executionClass ?? "deterministic",
+                  pipelineId: e28Model?.method.pipelineId ?? "local-surface/unavailable",
+                  components: [
+                    {
+                      kind: "source",
+                      name: e28Model?.sourcePackId ?? "Источник не загружен",
+                      version: "immutable vendor MAP + pose",
+                      role: "read-only LiDAR evidence",
+                      identitySha256: digestFromContentId(e28Model?.sourcePackId),
+                    },
+                    {
+                      kind: "algorithm",
+                      name: e28Model?.method.algorithm ?? "Rolling local surface",
+                      version: e28Model?.method.pipelineId ?? "—",
+                      role: "robust local plane, occupancy and temporal residuals",
+                      identitySha256: e28Model?.method.producerSha256 ?? null,
+                    },
+                    {
+                      kind: "runtime",
+                      name: "Mission Core worker D",
+                      version: "recorded-source-paced shadow",
+                      role: "bounded passive replay",
+                      identitySha256: null,
+                    },
+                  ],
+                }}
+              />
+            )}
             evidence={(
               <LaboratoryEvidence
                 eyebrow="ВИЗУАЛЬНОЕ ДОКАЗАТЕЛЬСТВО"
                 title="Диагностическая поверхность и кадры LAB E28"
+                kind="diagnostic-model"
               >
                 <LidarQualityWorkspace
                   embedded
diff --git a/apps/control-station/test/e29Evidence.test.mjs b/apps/control-station/test/e29Evidence.test.mjs
index 994c4ec..9a72a97 100644
--- a/apps/control-station/test/e29Evidence.test.mjs
+++ b/apps/control-station/test/e29Evidence.test.mjs
@@ -21,6 +21,10 @@ function result(overrides = {}) {
       frame_count: 4489,
       timeline_start_seconds: 35.4,
       timeline_end_seconds: 484.0,
+      profile: {
+        profile_id: "camera-first-local-surface-validation/v1",
+      },
+      producer_sha256: "e".repeat(64),
     },
     metrics: {
       frames: {
diff --git a/apps/control-station/test/localSurface.test.mjs b/apps/control-station/test/localSurface.test.mjs
index 0101c4b..4cf9da3 100644
--- a/apps/control-station/test/localSurface.test.mjs
+++ b/apps/control-station/test/localSurface.test.mjs
@@ -57,7 +57,13 @@ function model(overrides = {}) {
       timeline_start_seconds: 1,
       timeline_end_seconds: 2,
     },
-    surface_model: {},
+    surface_model: {
+      kind: "time-varying-rolling-local-plane",
+      profile: {
+        profile_id: "k1-vendor-map-dynamic-local-surface/v1",
+      },
+    },
+    producer_sha256: "e".repeat(64),
     occupancy_policy: policy(),
     metrics: {
       frames: {
diff --git a/apps/control-station/test/observationSessions.test.mjs b/apps/control-station/test/observationSessions.test.mjs
index bf00869..7caf41a 100644
--- a/apps/control-station/test/observationSessions.test.mjs
+++ b/apps/control-station/test/observationSessions.test.mjs
@@ -197,6 +197,25 @@ test("data recordings keep the compact session dropdown and laboratory results s
   assert.match(workspaceSource, /e29-camera-geometry/);
 });
 
+test("source and laboratory catalogs are requested as disjoint backend projections", async () => {
+  const calls = [];
+  const fetcher = async (input) => {
+    calls.push(String(input));
+    return new Response(JSON.stringify({ items: [] }), {
+      status: 200,
+      headers: { "Content-Type": "application/json" },
+    });
+  };
+
+  await fetchObservationSessionCatalog({ limit: 100, scope: "source", fetcher });
+  await fetchObservationSessionCatalog({ limit: 100, scope: "laboratory", fetcher });
+
+  assert.deepEqual(calls, [
+    "/api/v1/observation-sessions?limit=100&scope=source",
+    "/api/v1/observation-sessions?limit=100&scope=laboratory",
+  ]);
+});
+
 test("session catalog exposes authoritative background preparation state", () => {
   const catalog = decodeObservationSessionCatalog({
     items: [session({
diff --git a/apps/control-station/test/productShellContract.test.mjs b/apps/control-station/test/productShellContract.test.mjs
index 3bc48ac..98520ca 100644
--- a/apps/control-station/test/productShellContract.test.mjs
+++ b/apps/control-station/test/productShellContract.test.mjs
@@ -45,6 +45,9 @@ test("every laboratory result uses the shared evidence template", async () => {
 
   assert.match(source, /function LaboratoryWorkTemplate\(/);
   assert.match(source, /function LaboratoryEvidence\(/);
+  assert.match(source, /function LaboratoryMethodCard\(/);
+  assert.match(source, /method:\s*ReactNode/);
+  assert.match(source, /data-evidence-kind=\{kind\}/);
   assert.match(source, /data-viewer-focused=/);
   assert.match(css, /height:\s*clamp\(42rem,\s*68vh,\s*58rem\)/);
   assert.match(css, /resize:\s*vertical/);
diff --git a/src/k1link/compute/lab_instances.py b/src/k1link/compute/lab_instances.py
index b8ca4bd..604807d 100644
--- a/src/k1link/compute/lab_instances.py
+++ b/src/k1link/compute/lab_instances.py
@@ -83,6 +83,53 @@ class PublishedCameraEgoMotionLabInstance:
     build: CameraEgoMotionBuild
 
 
+def _laboratory_method(
+    *,
+    pipeline_id: str,
+    execution_class: str,
+    algorithm: str,
+    profile_sha256: str | None,
+    source_result_id: str,
+) -> dict[str, object]:
+    source_identity: str | None = source_result_id.rsplit("-", 1)[-1]
+    if len(source_identity) != 64 or any(
+        character not in "0123456789abcdef" for character in source_identity
+    ):
+        source_identity = None
+    return {
+        "schema_version": "missioncore.laboratory-method/v1",
+        # E19-E26 predate the method manifest. The publisher now records the
+        # exact known identities, but does not invent historical model/runtime
+        # versions that were absent from their original accepted evidence.
+        "completeness": "legacy-partial",
+        "execution_class": execution_class,
+        "pipeline_id": pipeline_id,
+        "components": [
+            {
+                "kind": "source",
+                "name": "immutable accepted upstream result",
+                "version": "content-addressed",
+                "role": "read-only input evidence",
+                "identity_sha256": source_identity,
+            },
+            {
+                "kind": "algorithm",
+                "name": algorithm,
+                "version": pipeline_id,
+                "role": "laboratory derivative",
+                "identity_sha256": profile_sha256,
+            },
+            {
+                "kind": "tool",
+                "name": "Mission Core LAB publisher",
+                "version": "missioncore.lab-instance/v1",
+                "role": "immutable catalog projection",
+                "identity_sha256": _sha256(Path(__file__).resolve(strict=True)),
+            },
+        ],
+    }
+
+
 def publish_integrated_lab_instance(
     *,
     repository_root: Path,
@@ -156,6 +203,13 @@ def publish_integrated_lab_instance(
         run_created_at_utc=source.created_at_utc,
         provenance={
             "schema_version": "missioncore.integrated-lab-publication/v1",
+            "method": _laboratory_method(
+                pipeline_id="integrated-perception/v1",
+                execution_class="hybrid",
+                algorithm="camera semantics + LiDAR metric fusion",
+                profile_sha256=profile_sha256,
+                source_result_id=source.result_id,
+            ),
             "storage_mode": "hard-linked-immutable-payloads",
             "source_job_id": source.job.job_id,
             "projected_job_id": lab_job.job_id,
@@ -263,6 +317,13 @@ def publish_e21_lab_instance(
         include_recorded_media=False,
         provenance={
             "schema_version": "missioncore.e21-lab-publication/v1",
+            "method": _laboratory_method(
+                pipeline_id="realtime-envelope/v1",
+                execution_class="hybrid",
+                algorithm="bounded real-time perception replay",
+                profile_sha256=str(e21_report["identity"]["profile_sha256"]),
+                source_result_id=str(e21_document["result_id"]),
+            ),
             "storage_mode": "bounded-derived-replay-and-projection",
             "e21_result_id": e21_document["result_id"],
             "worker_result_id": worker_document["result_id"],
@@ -361,6 +422,13 @@ def publish_e22_lab_instance(
         include_recorded_media=False,
         provenance={
             "schema_version": "missioncore.e22-lab-publication/v1",
+            "method": _laboratory_method(
+                pipeline_id="temporal-stability/v1",
+                execution_class="hybrid",
+                algorithm="bounded temporal 2D/3D/semantic stabilization",
+                profile_sha256=build.profile_sha256,
+                source_result_id=source.result_id,
+            ),
             "storage_mode": "bounded-derived-replay-and-temporal-projection",
             "source_result_id": source.result_id,
             "source_lab_session_id": (None if source_lab is None else source_lab.session_id),
@@ -487,6 +555,13 @@ def publish_e23_lab_instance(
         include_recorded_media=False,
         provenance={
             "schema_version": "missioncore.e23-lab-publication/v1",
+            "method": _laboratory_method(
+                pipeline_id="inline-temporal-stability/v1",
+                execution_class="hybrid",
+                algorithm="warm-worker inline temporal stabilization",
+                profile_sha256=profile_sha256,
+                source_result_id=str(worker_document["result_id"]),
+            ),
             "storage_mode": "bounded-inline-worker-result-and-immutable-source-replay",
             "worker_result_id": worker_document["result_id"],
             "source_report_sha256": _sha256(source_path),
@@ -589,6 +664,13 @@ def publish_e24_lab_instance(
         include_recorded_media=False,
         provenance={
             "schema_version": "missioncore.e24-lab-publication/v1",
+            "method": _laboratory_method(
+                pipeline_id="world-motion/v1",
+                execution_class="hybrid",
+                algorithm="world-frame motion tracking",
+                profile_sha256=build.profile_sha256,
+                source_result_id=source.result_id,
+            ),
             "storage_mode": "bounded-world-frame-tracking-and-immutable-source-replay",
             "source_result_id": source.result_id,
             "source_lab_session_id": (None if source_lab is None else source_lab.session_id),
@@ -695,6 +777,13 @@ def publish_e25_lab_instance(
         include_recorded_media=False,
         provenance={
             "schema_version": "missioncore.e25-lab-publication/v1",
+            "method": _laboratory_method(
+                pipeline_id="persistent-support-motion/v1",
+                execution_class="hybrid",
+                algorithm="persistent occupied-support tracking",
+                profile_sha256=build.profile_sha256,
+                source_result_id=source.result_id,
+            ),
             "storage_mode": "bounded-persistent-support-and-immutable-source-replay",
             "source_result_id": source.result_id,
             "source_lab_session_id": (None if source_lab is None else source_lab.session_id),
@@ -826,6 +915,13 @@ def publish_e26_lab_instance(
         include_recorded_media=False,
         provenance={
             "schema_version": "missioncore.e26-lab-publication/v1",
+            "method": _laboratory_method(
+                pipeline_id="camera-ego-motion-fusion/v1",
+                execution_class="hybrid",
+                algorithm="KB4 multiview ego-motion + persistent LiDAR support",
+                profile_sha256=build.profile_sha256,
+                source_result_id=lidar_source.result_id,
+            ),
             "storage_mode": (
                 "bounded-camera-ego-motion-and-immutable-lidar-source-replay"
             ),
diff --git a/src/k1link/compute/lidar_local_surface.py b/src/k1link/compute/lidar_local_surface.py
index 191ef36..209ff1c 100644
--- a/src/k1link/compute/lidar_local_surface.py
+++ b/src/k1link/compute/lidar_local_surface.py
@@ -1375,6 +1375,7 @@ def k1_local_surface_catalog_item(model: K1LocalSurfaceV1) -> dict[str, object]:
         "status": model.report["status"],
         "source": model.report["source"],
         "surface_model": model.report["surface_model"],
+        "producer_sha256": model.identity["producer_sha256"],
         "occupancy_policy": model.report["occupancy_policy"],
         "metrics": model.report["metrics"],
         "anchors": model.report["anchors"],
diff --git a/src/k1link/sessions/store.py b/src/k1link/sessions/store.py
index 9c9289d..e4f59e0 100644
--- a/src/k1link/sessions/store.py
+++ b/src/k1link/sessions/store.py
@@ -11,7 +11,7 @@ import threading
 from collections.abc import Iterator
 from contextlib import contextmanager
 from pathlib import Path
-from typing import Any, cast
+from typing import Any, Literal, cast
 from uuid import uuid4
 
 from k1link.artifacts import utc_now_iso
@@ -45,6 +45,8 @@ LAB_ARCHIVE_ID = "missioncore.lab-instances"
 LAB_ORIGIN = "missioncore.lab-instance/v1"
 LAB_ID_PATTERN = re.compile(r"^LAB [A-Z][A-Z0-9._-]{0,31}$")
 SHA256_PATTERN = re.compile(r"^[a-f0-9]{64}$")
+LAB_METHOD_SCHEMA = "missioncore.laboratory-method/v1"
+SessionScope = Literal["all", "source", "laboratory"]
 
 SCHEMA_SQL = """
 CREATE TABLE IF NOT EXISTS observation_sessions (
@@ -205,27 +207,51 @@ class SessionStore:
             connection.commit()
         return tuple(imported)
 
-    def list_recent(self, *, limit: int = 20, cursor: str | None = None) -> SessionPage:
+    def list_recent(
+        self,
+        *,
+        limit: int = 20,
+        cursor: str | None = None,
+        scope: SessionScope = "all",
+    ) -> SessionPage:
         if not 1 <= limit <= 100:
             raise ValueError("limit must be within 1..100")
+        scope_clause = {
+            "all": "1 = 1",
+            "source": (
+                "NOT EXISTS (SELECT 1 FROM observation_lab_instances AS lab "
+                "WHERE lab.session_id = sessions.session_id)"
+            ),
+            "laboratory": (
+                "EXISTS (SELECT 1 FROM observation_lab_instances AS lab "
+                "WHERE lab.session_id = sessions.session_id)"
+            ),
+        }.get(scope)
+        if scope_clause is None:
+            raise ValueError("scope must be all, source, or laboratory")
         parameters: list[object] = []
-        where = ""
+        where = f"WHERE {scope_clause}"  # noqa: S608 - closed static scope clauses
         with self._connect() as connection:
             if cursor is not None:
                 _validate_identifier(cursor, "session cursor")
                 cursor_row = connection.execute(
-                    "SELECT started_at_utc, session_id FROM observation_sessions "
-                    "WHERE session_id = ?",
+                    "SELECT sessions.started_at_utc, sessions.session_id "
+                    "FROM observation_sessions AS sessions "
+                    f"WHERE {scope_clause} AND sessions.session_id = ?",  # noqa: S608
                     (cursor,),
                 ).fetchone()
                 if cursor_row is None:
                     raise SessionNotFoundError("observation session cursor was not found")
-                where = "WHERE (COALESCE(started_at_utc, ''), session_id) < (COALESCE(?, ''), ?)"
+                where += (
+                    " AND (COALESCE(sessions.started_at_utc, ''), sessions.session_id) "
+                    "< (COALESCE(?, ''), ?)"
+                )
                 parameters.extend((cursor_row["started_at_utc"], cursor_row["session_id"]))
             parameters.append(limit + 1)
             rows = connection.execute(
-                f"SELECT * FROM observation_sessions {where} "  # noqa: S608 - static clause
-                "ORDER BY COALESCE(started_at_utc, '') DESC, session_id DESC LIMIT ?",
+                f"SELECT sessions.* FROM observation_sessions AS sessions {where} "  # noqa: S608
+                "ORDER BY COALESCE(sessions.started_at_utc, '') DESC, "
+                "sessions.session_id DESC LIMIT ?",
                 parameters,
             ).fetchall()
             lab_rows = (
@@ -366,7 +392,9 @@ class SessionStore:
             or duration_seconds <= 0
         ):
             raise ValueError("LAB duration must be a positive finite value")
-        serialized_provenance = _serialize_provenance(provenance or {})
+        normalized_provenance = provenance or {}
+        _validate_lab_method(normalized_provenance)
+        serialized_provenance = _serialize_provenance(normalized_provenance)
         published_at = utc_now_iso()
 
         with self._lock, self._connect() as connection:
@@ -1078,6 +1106,55 @@ def _serialize_provenance(value: dict[str, Any]) -> str:
     return serialized
 
 
+def _validate_lab_method(provenance: dict[str, Any]) -> None:
+    method = provenance.get("method")
+    if not isinstance(method, dict):
+        raise ValueError("LAB provenance must include a method manifest")
+    if method.get("schema_version") != LAB_METHOD_SCHEMA:
+        raise ValueError("LAB method schema is invalid")
+    if method.get("completeness") not in {"complete", "legacy-partial"}:
+        raise ValueError("LAB method completeness is invalid")
+    if method.get("execution_class") not in {
+        "deterministic",
+        "ai-inference",
+        "hybrid",
+    }:
+        raise ValueError("LAB method execution class is invalid")
+    pipeline_id = method.get("pipeline_id")
+    if (
+        not isinstance(pipeline_id, str)
+        or not pipeline_id.strip()
+        or len(pipeline_id) > 160
+    ):
+        raise ValueError("LAB method pipeline id is invalid")
+    components = method.get("components")
+    if not isinstance(components, list) or not 1 <= len(components) <= 32:
+        raise ValueError("LAB method components are invalid")
+    identities = 0
+    for component in components:
+        if not isinstance(component, dict):
+            raise ValueError("LAB method component is invalid")
+        if component.get("kind") not in {"source", "tool", "model", "algorithm", "runtime"}:
+            raise ValueError("LAB method component kind is invalid")
+        for field in ("name", "version", "role"):
+            value = component.get(field)
+            if not isinstance(value, str) or not value.strip() or len(value) > 240:
+                raise ValueError(f"LAB method component {field} is invalid")
+        identity = component.get("identity_sha256")
+        if identity is not None:
+            if not isinstance(identity, str) or SHA256_PATTERN.fullmatch(identity) is None:
+                raise ValueError("LAB method component identity is invalid")
+            identities += 1
+    if identities == 0:
+        raise ValueError("LAB method must bind at least one component identity")
+    if method["completeness"] == "complete" and any(
+        component.get("identity_sha256") is None
+        for component in components
+        if component.get("kind") in {"model", "algorithm"}
+    ):
+        raise ValueError("complete LAB method must identify every model and algorithm")
+
+
 def _require_utc_timestamp(value: str, field: str) -> None:
     from datetime import datetime
 
diff --git a/src/k1link/web/session_api.py b/src/k1link/web/session_api.py
index 79a9b1c..1650ecf 100644
--- a/src/k1link/web/session_api.py
+++ b/src/k1link/web/session_api.py
@@ -312,10 +312,11 @@ def build_session_router(
     def list_observation_sessions(
         limit: int = Query(default=20, ge=1, le=100),
         cursor: str | None = Query(default=None, max_length=128),
+        scope: Literal["all", "source", "laboratory"] = "all",
     ) -> dict[str, Any]:
         try:
             _refresh_catalog(catalog_refresher)
-            page = store.list_recent(limit=limit, cursor=cursor)
+            page = store.list_recent(limit=limit, cursor=cursor, scope=scope)
             return {
                 "items": [
                     {
diff --git a/tests/test_session_api.py b/tests/test_session_api.py
index eabf247..12ea5a8 100644
--- a/tests/test_session_api.py
+++ b/tests/test_session_api.py
@@ -43,6 +43,24 @@ from k1link.web.session_api import (
 )
 
 
+def lab_method() -> dict[str, object]:
+    return {
+        "schema_version": "missioncore.laboratory-method/v1",
+        "completeness": "complete",
+        "execution_class": "deterministic",
+        "pipeline_id": "test-pipeline/v1",
+        "components": [
+            {
+                "kind": "algorithm",
+                "name": "test algorithm",
+                "version": "v1",
+                "role": "contract fixture",
+                "identity_sha256": "9" * 64,
+            }
+        ],
+    }
+
+
 def make_legacy_session(sessions_root: Path, session_id: str) -> Path:
     session = sessions_root / session_id
     capture = session / "captures" / "mqtt_live"
@@ -281,17 +299,26 @@ def test_session_router_exposes_immutable_lab_provenance(tmp_path: Path) -> None
         source_result_id="e21-realtime-envelope-" + "b" * 64,
         config_sha256="c" * 64,
         run_created_at_utc="2026-07-23T15:55:15.548Z",
-        provenance={"source_payloads_mutated": False},
+        provenance={
+            "source_payloads_mutated": False,
+            "method": lab_method(),
+        },
     )
     router = build_session_router(store)
     list_route = endpoint(router, "/api/v1/observation-sessions", "GET")
     detail_route = endpoint(router, "/api/v1/observation-sessions/{session_id}", "GET")
 
-    listing = list_route(limit=20, cursor=None)
+    listing = list_route(limit=20, cursor=None, scope="all")
     item = next(value for value in listing["items"] if value["id"] == binding.session_id)
+    source_listing = list_route(limit=20, cursor=None, scope="source")
+    laboratory_listing = list_route(limit=20, cursor=None, scope="laboratory")
     detail = detail_route(session_id=binding.session_id)
 
     assert item["lab"] == binding.as_dict()
+    assert [value["id"] for value in source_listing["items"]] == [source.name]
+    assert [value["id"] for value in laboratory_listing["items"]] == [
+        binding.session_id
+    ]
     assert detail["lab"] == binding.as_dict()
     assert item["lab"]["source_session_id"] == source.name
     assert item["lab"]["provenance"]["source_payloads_mutated"] is False
diff --git a/tests/test_session_store.py b/tests/test_session_store.py
index 5c64c81..b5e6579 100644
--- a/tests/test_session_store.py
+++ b/tests/test_session_store.py
@@ -23,6 +23,24 @@ from k1link.sessions import (
 )
 
 
+def lab_method() -> dict[str, object]:
+    return {
+        "schema_version": "missioncore.laboratory-method/v1",
+        "completeness": "complete",
+        "execution_class": "deterministic",
+        "pipeline_id": "test-pipeline/v1",
+        "components": [
+            {
+                "kind": "algorithm",
+                "name": "test algorithm",
+                "version": "v1",
+                "role": "contract fixture",
+                "identity_sha256": "9" * 64,
+            }
+        ],
+    }
+
+
 def make_legacy_session(
     sessions_root: Path,
     session_id: str,
@@ -798,7 +816,10 @@ def test_lab_instance_is_independent_and_never_deletes_source_evidence(
         source_result_id="e21-realtime-envelope-" + "b" * 64,
         config_sha256="c" * 64,
         run_created_at_utc="2026-07-23T15:51:25.000Z",
-        provenance={"storage_mode": "hard-linked-immutable-payloads"},
+        provenance={
+            "storage_mode": "hard-linked-immutable-payloads",
+            "method": lab_method(),
+        },
     )
 
     detail = store.get_session(binding.session_id)
@@ -809,6 +830,13 @@ def test_lab_instance_is_independent_and_never_deletes_source_evidence(
     assert lab_command.session_id == binding.session_id
     assert source.is_dir()
 
+    assert [item.session_id for item in store.list_recent(scope="source").items] == [
+        source.name
+    ]
+    assert [
+        item.session_id for item in store.list_recent(scope="laboratory").items
+    ] == [binding.session_id]
+
     with pytest.raises(SessionIntegrityError, match="has LAB instances"):
         store.delete_session(source.name)
     assert source.is_dir()
@@ -838,7 +866,7 @@ def test_lab_instance_publication_is_idempotent_but_provenance_is_immutable(
         "source_result_id": "e10-integrated-perception-" + "e" * 64,
         "config_sha256": "f" * 64,
         "run_created_at_utc": "2026-07-23T05:19:43.138Z",
-        "provenance": {"source": "accepted"},
+        "provenance": {"source": "accepted", "method": lab_method()},
     }
 
     first = store.publish_lab_instance(**parameters)
@@ -849,6 +877,28 @@ def test_lab_instance_publication_is_idempotent_but_provenance_is_immutable(
         store.publish_lab_instance(**{**parameters, "config_sha256": "0" * 64})
 
 
+def test_lab_instance_rejects_publication_without_a_method_manifest(
+    tmp_path: Path,
+) -> None:
+    repository = tmp_path / "repo"
+    sessions = repository / "sessions"
+    source = make_legacy_session(sessions, "20260716T205632Z_viewer_live")
+    store = SessionStore(repository, data_dir=tmp_path / "data")
+    store.reconcile_archive(xgrids_k1_archive_source(sessions))
+
+    with pytest.raises(ValueError, match="method manifest"):
+        store.publish_lab_instance(
+            session_id="lab-without-method",
+            source_session_id=source.name,
+            display_name="LAB E30 · incomplete method",
+            lab_id="LAB E30",
+            result_kind="e30-test",
+            result_id="e30-test",
+            run_created_at_utc="2026-07-26T15:00:00Z",
+            provenance={"schema_version": "legacy"},
+        )
+
+
 def test_bounded_lab_instance_excludes_unbounded_recorded_media(
     tmp_path: Path,
 ) -> None:
@@ -872,7 +922,7 @@ def test_bounded_lab_instance_excludes_unbounded_recorded_media(
         run_created_at_utc="2026-07-23T15:55:15.548Z",
         duration_seconds=59.962,
         include_recorded_media=False,
-        provenance={"timeline_scope": "bounded"},
+        provenance={"timeline_scope": "bounded", "method": lab_method()},
     )
 
     detail = store.get_session(binding.session_id)