diff --git a/Resources/Info.plist b/Resources/Info.plist
index 8bb61df..30d4453 100644
--- a/Resources/Info.plist
+++ b/Resources/Info.plist
@@ -19,9 +19,9 @@
     <key>CFBundlePackageType</key>
     <string>APPL</string>
     <key>CFBundleShortVersionString</key>
-    <string>0.8.1</string>
+    <string>0.8.2</string>
     <key>CFBundleVersion</key>
-    <string>9</string>
+    <string>10</string>
     <key>CFBundleDocumentTypes</key>
     <array>
         <dict>
diff --git a/Sources/GlossCore/BabelDOCExecutorClient.swift b/Sources/GlossCore/BabelDOCExecutorClient.swift
index 1ad7a1a..df4009b 100644
--- a/Sources/GlossCore/BabelDOCExecutorClient.swift
+++ b/Sources/GlossCore/BabelDOCExecutorClient.swift
@@ -803,6 +803,9 @@ public struct BabelDOCExecutorClient: Sendable {
                     timeline: timeline,
                     onProgress: onProgress
                 )
+                try await waitForWorkerToFinish(
+                    executionID: created.executionID
+                )
                 connection.stateHandler(
                     .init(
                         taskID: taskID,
@@ -876,6 +879,27 @@ public struct BabelDOCExecutorClient: Sendable {
         }
     }
 
+    func waitForWorkerToFinish(
+        executionID: String,
+        timeout: Duration = .seconds(30),
+        pollInterval: Duration = .milliseconds(100)
+    ) async throws {
+        let clock = ContinuousClock()
+        let deadline = clock.now.advanced(by: timeout)
+        while true {
+            let snapshot = try await execution(id: executionID)
+            if snapshot.workerFinished {
+                return
+            }
+            guard clock.now < deadline else {
+                throw BabelDOCExecutorError.unavailable(
+                    "PDF worker 完成后未能及时释放执行槽"
+                )
+            }
+            try await Task.sleep(for: pollInterval)
+        }
+    }
+
     func waitForCancelledWorker(
         executionID: String?,
         taskID: String,
diff --git a/Tests/GlossCoreTests/BabelDOCExecutorClientTests.swift b/Tests/GlossCoreTests/BabelDOCExecutorClientTests.swift
index 35141da..96c54c0 100644
--- a/Tests/GlossCoreTests/BabelDOCExecutorClientTests.swift
+++ b/Tests/GlossCoreTests/BabelDOCExecutorClientTests.swift
@@ -270,6 +270,13 @@ final class BabelDOCExecutorClientTests: XCTestCase {
                         connection: fixture.connection
                     ),
                 ])
+            case ("GET", "/v1/executions/execution-1"):
+                return .json(
+                    Self.executionSnapshot(
+                        executionID: "execution-1",
+                        status: "succeeded"
+                    )
+                )
             default:
                 return .json(["code": "not_found", "message": "not found"], status: 404)
             }
@@ -321,6 +328,37 @@ final class BabelDOCExecutorClientTests: XCTestCase {
         XCTAssertTrue(String(decoding: encodedBody, as: UTF8.self).contains("bridge-secret"))
     }
 
+    func testTranslationWaitsUntilWorkerReleasesExecutionSlot() async throws {
+        let fixture = try Fixture()
+        defer { fixture.remove() }
+        let attempts = LockedValues<Int>()
+
+        StubExecutorURLProtocol.setHandler { request in
+            guard
+                request.httpMethod == "GET",
+                request.url?.path == "/v1/executions/execution-cleanup"
+            else {
+                return .json(["code": "not_found", "message": "not found"], status: 404)
+            }
+            attempts.append(1)
+            return .json(
+                Self.executionSnapshot(
+                    executionID: "execution-cleanup",
+                    status: "succeeded",
+                    workerFinished: attempts.snapshot().count >= 3
+                )
+            )
+        }
+
+        try await fixture.client().waitForWorkerToFinish(
+            executionID: "execution-cleanup",
+            timeout: .seconds(1),
+            pollInterval: .milliseconds(1)
+        )
+
+        XCTAssertEqual(attempts.snapshot().count, 3)
+    }
+
     func testReplayGapRecoversSucceededOutputFromAuthoritativeSnapshot() async throws {
         let fixture = try Fixture()
         defer { fixture.remove() }
@@ -365,6 +403,13 @@ final class BabelDOCExecutorClientTests: XCTestCase {
                             lastSequence: 24
                         ),
                     ], status: 410)
+            case ("GET", "/v1/executions/execution-gap"):
+                return .json(
+                    Self.executionSnapshot(
+                        executionID: "execution-gap",
+                        status: "succeeded"
+                    )
+                )
             default:
                 return .json(["code": "not_found", "message": "not found"], status: 404)
             }
@@ -571,7 +616,8 @@ final class BabelDOCExecutorClientTests: XCTestCase {
         taskID: String = "task-1",
         initialSequence: Int = 10,
         firstAvailableSequence: Int? = 11,
-        lastSequence: Int = 12
+        lastSequence: Int = 12,
+        workerFinished: Bool? = nil
     ) -> [String: Any] {
         [
             "execution_id": executionID,
@@ -582,7 +628,9 @@ final class BabelDOCExecutorClientTests: XCTestCase {
                 firstAvailableSequence.map { $0 as Any }
                 ?? (NSNull() as Any),
             "last_sequence": lastSequence,
-            "worker_finished": status != "running" && status != "cancelling",
+            "worker_finished":
+                workerFinished
+                ?? (status != "running" && status != "cancelling"),
             "created_at": 1_000.0,
             "finished_at": status == "running" ? NSNull() : 1_001.0,
         ]
diff --git a/Tests/GlossCoreTests/BabelDOCExternalEngineTests.swift b/Tests/GlossCoreTests/BabelDOCExternalEngineTests.swift
index 74dc162..670fc11 100644
--- a/Tests/GlossCoreTests/BabelDOCExternalEngineTests.swift
+++ b/Tests/GlossCoreTests/BabelDOCExternalEngineTests.swift
@@ -22,7 +22,15 @@ final class BabelDOCExternalEngineTests: XCTestCase {
             )
         }
         let runtime = try XCTUnwrap(BabelDOCExternalEngine.resolveRuntime())
-        let session = BabelDOCServiceSession()
+        let stateDirectory = FileManager.default.temporaryDirectory
+            .appendingPathComponent(
+                "Gloss-BabelDOC-Service-Smoke-\(UUID().uuidString)",
+                isDirectory: true
+            )
+        defer { try? FileManager.default.removeItem(at: stateDirectory) }
+        let session = BabelDOCServiceSession(
+            persistedStateDirectoryURL: stateDirectory
+        )
         do {
             let baseURL = try await session.start(
                 runtime: runtime,
@@ -75,7 +83,18 @@ final class BabelDOCExternalEngineTests: XCTestCase {
             withIntermediateDirectories: true
         )
         let runtime = try XCTUnwrap(BabelDOCExternalEngine.resolveRuntime())
-        let service = usePersistentLayout ? BabelDOCServiceSession() : nil
+        let stateDirectory = FileManager.default.temporaryDirectory
+            .appendingPathComponent(
+                "Gloss-BabelDOC-Benchmark-\(UUID().uuidString)",
+                isDirectory: true
+            )
+        defer { try? FileManager.default.removeItem(at: stateDirectory) }
+        let service =
+            usePersistentLayout
+            ? BabelDOCServiceSession(
+                persistedStateDirectoryURL: stateDirectory
+            )
+            : nil
         do {
             let layoutServiceBaseURL = try await service?.start(
                 runtime: runtime,
diff --git a/docs/release-notes/v0.8.2.md b/docs/release-notes/v0.8.2.md
new file mode 100644
index 0000000..da4e89f
--- /dev/null
+++ b/docs/release-notes/v0.8.2.md
@@ -0,0 +1,34 @@
+# Gloss 0.8.2
+
+Gloss 0.8.2 makes sequential PDF batches reliable and keeps live service
+validation isolated from an already running App session.
+
+## PDF batch reliability
+
+- Waits for BabelDOC's worker cleanup to finish after a successful result
+  before submitting the next PDF.
+- Uses a bounded 30-second handoff timeout with a clear failure instead of
+  letting the next file hit a transient `busy` response.
+- Covers delayed cleanup and replayed terminal results in executor client
+  tests.
+
+## Service validation
+
+- Gives each opt-in live smoke or benchmark run its own temporary persisted
+  service state.
+- Prevents command-line validation from stopping or replacing the App's
+  resident PDF executor and layout service.
+
+## Validation
+
+- The full Gloss test suite passes.
+- The 15-page *Attention Is All You Need* PDF completed twice in one
+  persistent session: 15.50 seconds with a fresh layout cache and 6.61 seconds
+  with a layout cache hit. Both outputs retain selectable text, tables,
+  formulas, and figures.
+
+## Compatibility
+
+This release is compatible with the signed BabelDOC `0.6.4+gloss.5` runtime.
+The runtime also includes a server-side terminal-worker handoff grace period,
+so older Gloss clients remain safe while updating.