diff --git a/src/config/sessions/types.ts b/src/config/sessions/types.ts
index ab042ca5812..fcffc810ab6 100644
--- a/src/config/sessions/types.ts
+++ b/src/config/sessions/types.ts
@@ -165,6 +165,8 @@ export type SessionEntry = {
   heartbeatTaskState?: Record<string, number>;
   /** Plugin-owned session state, grouped by plugin id then extension namespace. */
   pluginExtensions?: Record<string, Record<string, SessionPluginJsonValue>>;
+  /** Top-level SessionEntry mirror slots owned by plugin session extensions. */
+  pluginExtensionSlotKeys?: Record<string, Record<string, string>>;
   /** Durable one-shot prompt additions drained before the next agent turn. */
   pluginNextTurnInjections?: Record<string, SessionPluginNextTurnInjection[]>;
   sessionId: string;
diff --git a/src/plugins/contracts/session-entry-projection.contract.test.ts b/src/plugins/contracts/session-entry-projection.contract.test.ts
index c6ec858ed6d..9d248daaf5a 100644
--- a/src/plugins/contracts/session-entry-projection.contract.test.ts
+++ b/src/plugins/contracts/session-entry-projection.contract.test.ts
@@ -565,6 +565,11 @@ describe("plugin session extension SessionEntry projection", () => {
           const stored = loadSessionStore(storePath, { skipCache: true });
           const entry = stored["agent:main:main"] as unknown as Record<string, unknown>;
           expect(entry.approvalSnapshot).toBeUndefined();
+          expect(entry.pluginExtensionSlotKeys).toEqual({
+            "restart-promoted-plugin": {
+              workflow: "approvalSnapshot",
+            },
+          });
           expect(entry.pluginExtensions).toEqual({
             "restart-promoted-plugin": {
               workflow: { state: "waiting" },
@@ -582,6 +587,62 @@ describe("plugin session extension SessionEntry projection", () => {
     }
   });
 
+  it("clears persisted promoted slots when registry metadata is unavailable", async () => {
+    setActivePluginRegistry(createEmptyPluginRegistry());
+    const stateDir = await fs.mkdtemp(
+      path.join(resolvePreferredOpenClawTmpDir(), "openclaw-host-hooks-slot-metadata-cleanup-"),
+    );
+    const storePath = path.join(stateDir, "sessions.json");
+    const tempConfig = { session: { store: storePath } };
+    const previousStateDir = process.env.OPENCLAW_STATE_DIR;
+    try {
+      process.env.OPENCLAW_STATE_DIR = stateDir;
+      await withTempConfig({
+        cfg: tempConfig,
+        run: async () => {
+          await updateSessionStore(storePath, (store) => {
+            store["agent:main:main"] = {
+              sessionId: "session-id",
+              updatedAt: Date.now(),
+              pluginExtensions: {
+                "removed-promoted-plugin": {
+                  workflow: { state: "stale" },
+                },
+              },
+              pluginExtensionSlotKeys: {
+                "removed-promoted-plugin": {
+                  workflow: "approvalSnapshot",
+                },
+              },
+              approvalSnapshot: { state: "stale" },
+            } as unknown as SessionEntry;
+          });
+
+          await expect(
+            runPluginHostCleanup({
+              cfg: tempConfig as never,
+              pluginId: "removed-promoted-plugin",
+              reason: "delete",
+            }),
+          ).resolves.toMatchObject({ failures: [] });
+
+          const stored = loadSessionStore(storePath, { skipCache: true });
+          const entry = stored["agent:main:main"] as unknown as Record<string, unknown>;
+          expect(entry.approvalSnapshot).toBeUndefined();
+          expect(entry.pluginExtensionSlotKeys).toBeUndefined();
+          expect(entry.pluginExtensions).toBeUndefined();
+        },
+      });
+    } finally {
+      if (previousStateDir === undefined) {
+        delete process.env.OPENCLAW_STATE_DIR;
+      } else {
+        process.env.OPENCLAW_STATE_DIR = previousStateDir;
+      }
+      await fs.rm(stateDir, { recursive: true, force: true });
+    }
+  });
+
   it("exposes scoped session extension reads to trusted tool policies", async () => {
     const seen: unknown[] = [];
     const seenConfig: unknown[] = [];
diff --git a/src/plugins/host-hook-cleanup.ts b/src/plugins/host-hook-cleanup.ts
index 7840daf6ff6..638973f706f 100644
--- a/src/plugins/host-hook-cleanup.ts
+++ b/src/plugins/host-hook-cleanup.ts
@@ -31,15 +31,49 @@ function shouldCleanPlugin(pluginId: string, filterPluginId?: string): boolean {
   return !filterPluginId || pluginId === filterPluginId;
 }
 
+function collectStoredSessionEntrySlotKeys(entry: SessionEntry, pluginId?: string): Set<string> {
+  const slotKeys = new Set<string>();
+  const storedSlotKeys = entry.pluginExtensionSlotKeys;
+  if (!storedSlotKeys) {
+    return slotKeys;
+  }
+  const records =
+    pluginId === undefined
+      ? Object.values(storedSlotKeys)
+      : storedSlotKeys[pluginId]
+        ? [storedSlotKeys[pluginId]]
+        : [];
+  for (const record of records) {
+    for (const slotKey of Object.values(record)) {
+      const normalized = normalizeSessionEntrySlotKey(slotKey);
+      if (normalized.ok) {
+        slotKeys.add(normalized.key);
+      }
+    }
+  }
+  return slotKeys;
+}
+
+function collectPromotedSessionEntrySlotKeys(
+  entry: SessionEntry,
+  pluginId?: string,
+  sessionEntrySlotKeys?: ReadonlySet<string>,
+): Set<string> {
+  const slotKeys = collectStoredSessionEntrySlotKeys(entry, pluginId);
+  for (const slotKey of sessionEntrySlotKeys ?? []) {
+    slotKeys.add(slotKey);
+  }
+  return slotKeys;
+}
+
 function clearPromotedSessionEntrySlots(
   entry: SessionEntry,
+  pluginId?: string,
   sessionEntrySlotKeys?: ReadonlySet<string>,
 ): void {
-  if (!sessionEntrySlotKeys || sessionEntrySlotKeys.size === 0) {
-    return;
-  }
+  const slotKeys = collectPromotedSessionEntrySlotKeys(entry, pluginId, sessionEntrySlotKeys);
   const entryRecord = entry as Record<string, unknown>;
-  for (const slotKey of sessionEntrySlotKeys) {
+  for (const slotKey of slotKeys) {
     delete entryRecord[slotKey];
   }
 }
@@ -49,9 +83,10 @@ export function clearPluginOwnedSessionState(
   pluginId?: string,
   sessionEntrySlotKeys?: ReadonlySet<string>,
 ): void {
-  clearPromotedSessionEntrySlots(entry, sessionEntrySlotKeys);
+  clearPromotedSessionEntrySlots(entry, pluginId, sessionEntrySlotKeys);
   if (!pluginId) {
     delete entry.pluginExtensions;
+    delete entry.pluginExtensionSlotKeys;
     delete entry.pluginNextTurnInjections;
     return;
   }
@@ -61,6 +96,12 @@ export function clearPluginOwnedSessionState(
       delete entry.pluginExtensions;
     }
   }
+  if (entry.pluginExtensionSlotKeys) {
+    delete entry.pluginExtensionSlotKeys[pluginId];
+    if (Object.keys(entry.pluginExtensionSlotKeys).length === 0) {
+      delete entry.pluginExtensionSlotKeys;
+    }
+  }
   if (entry.pluginNextTurnInjections) {
     delete entry.pluginNextTurnInjections[pluginId];
     if (Object.keys(entry.pluginNextTurnInjections).length === 0) {
@@ -71,13 +112,15 @@ export function clearPluginOwnedSessionState(
 
 function hasPromotedSessionEntrySlot(
   entry: SessionEntry,
+  pluginId?: string,
   sessionEntrySlotKeys?: ReadonlySet<string>,
 ): boolean {
-  if (!sessionEntrySlotKeys || sessionEntrySlotKeys.size === 0) {
+  const slotKeys = collectPromotedSessionEntrySlotKeys(entry, pluginId, sessionEntrySlotKeys);
+  if (slotKeys.size === 0) {
     return false;
   }
   const entryRecord = entry as Record<string, unknown>;
-  for (const slotKey of sessionEntrySlotKeys) {
+  for (const slotKey of slotKeys) {
     if (Object.prototype.hasOwnProperty.call(entryRecord, slotKey)) {
       return true;
     }
@@ -90,13 +133,19 @@ function hasPluginOwnedSessionState(
   pluginId?: string,
   sessionEntrySlotKeys?: ReadonlySet<string>,
 ): boolean {
-  if (hasPromotedSessionEntrySlot(entry, sessionEntrySlotKeys)) {
+  if (hasPromotedSessionEntrySlot(entry, pluginId, sessionEntrySlotKeys)) {
     return true;
   }
   if (!pluginId) {
-    return Boolean(entry.pluginExtensions || entry.pluginNextTurnInjections);
+    return Boolean(
+      entry.pluginExtensions || entry.pluginExtensionSlotKeys || entry.pluginNextTurnInjections,
+    );
   }
-  return Boolean(entry.pluginExtensions?.[pluginId] || entry.pluginNextTurnInjections?.[pluginId]);
+  return Boolean(
+    entry.pluginExtensions?.[pluginId] ||
+    entry.pluginExtensionSlotKeys?.[pluginId] ||
+    entry.pluginNextTurnInjections?.[pluginId],
+  );
 }
 
 function matchesCleanupSession(
@@ -172,11 +221,11 @@ async function clearPromotedSessionEntrySlotStores(params: {
       for (const [entryKey, entry] of Object.entries(store)) {
         if (
           !matchesCleanupSession(entryKey, entry, params.sessionKey) ||
-          !hasPromotedSessionEntrySlot(entry, params.sessionEntrySlotKeys)
+          !hasPromotedSessionEntrySlot(entry, params.pluginId, params.sessionEntrySlotKeys)
         ) {
           continue;
         }
-        clearPromotedSessionEntrySlots(entry, params.sessionEntrySlotKeys);
+        clearPromotedSessionEntrySlots(entry, params.pluginId, params.sessionEntrySlotKeys);
         entry.updatedAt = now;
         clearedInStore += 1;
       }
diff --git a/src/plugins/host-hook-state.ts b/src/plugins/host-hook-state.ts
index 7e31bce5d78..c3ff95e8ba8 100644
--- a/src/plugins/host-hook-state.ts
+++ b/src/plugins/host-hook-state.ts
@@ -486,6 +486,7 @@ export async function patchPluginSessionExtension(params: {
     if (!entry) {
       return undefined;
     }
+    const entryRecord = entry as Record<string, unknown>;
     const pluginExtensions = { ...entry.pluginExtensions };
     const pluginState = { ...pluginExtensions[pluginId] };
     if (params.unset === true) {
@@ -503,6 +504,27 @@ export async function patchPluginSessionExtension(params: {
     } else {
       delete entry.pluginExtensions;
     }
+    const storedSlotKeys = { ...entry.pluginExtensionSlotKeys };
+    const pluginSlotKeys = { ...storedSlotKeys[pluginId] };
+    const previousSlotKey = normalizeSessionEntrySlotKey(pluginSlotKeys[namespace]);
+    if (previousSlotKey.ok && previousSlotKey.key !== slotKey) {
+      delete entryRecord[previousSlotKey.key];
+    }
+    if (slotKey && params.unset !== true) {
+      pluginSlotKeys[namespace] = slotKey;
+    } else {
+      delete pluginSlotKeys[namespace];
+    }
+    if (Object.keys(pluginSlotKeys).length > 0) {
+      storedSlotKeys[pluginId] = pluginSlotKeys;
+    } else {
+      delete storedSlotKeys[pluginId];
+    }
+    if (Object.keys(storedSlotKeys).length > 0) {
+      entry.pluginExtensionSlotKeys = storedSlotKeys;
+    } else {
+      delete entry.pluginExtensionSlotKeys;
+    }
     if (slotKey) {
       const projected = projectSessionExtensionValueForSlot({
         registration,
@@ -510,7 +532,6 @@ export async function patchPluginSessionExtension(params: {
         sessionId: entry.sessionId,
         nextValue: params.unset === true ? undefined : nextPluginValue,
       });
-      const entryRecord = entry as Record<string, unknown>;
       if (projected === undefined) {
         delete entryRecord[slotKey];
       } else {
diff --git a/src/plugins/session-entry-slot-keys.ts b/src/plugins/session-entry-slot-keys.ts
index 322dd874bc2..8415d82249c 100644
--- a/src/plugins/session-entry-slot-keys.ts
+++ b/src/plugins/session-entry-slot-keys.ts
@@ -9,6 +9,7 @@ const SESSION_ENTRY_RESERVED_SLOT_KEY_LIST = [
   "heartbeatIsolatedBaseSessionKey",
   "heartbeatTaskState",
   "pluginExtensions",
+  "pluginExtensionSlotKeys",
   "pluginNextTurnInjections",
   "sessionId",
   "updatedAt",