diff --git a/CHANGELOG.md b/CHANGELOG.md
index 960c548..92a7898 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,24 @@
 # Changelog
 
+## 开发快照 0.1.364（恢复保留错误的第一因分类；部署基线稳定性）
+
+### Fixed
+
+- worker 恢复 `terminalLibraryCaptureError`，仅保留仍存在的两个确定性 marker：
+  `missing library generated question index`、`empty library index content`。已恢复
+  写入者后走 `jobs.Permanent(validation_failed)`，保留原错误消息；已取消的正文
+  索引覆盖 marker 和网络超时仍可重试，不再恢复推断门槛。
+- 本机部署 preflight 不再用 lifetime `RestartCount=0` 作为旧基线稳定性定义：
+  绑定容器 ID/image/env/mount/StartedAt/RestartCount，间隔采样确认 running、
+  StartedAt/RestartCount 不变；历史非零但稳定允许，采样变化/切换实例拒绝。
+  新 api/worker/web 容器仍要求 running、ready、零重启。
+
+### Tests
+
+- 保留错误分类 RED→GREEN：`r3g-terminal-red.txt` / `r3g-terminal-green.txt`。
+- 部署 strict fake 增加旧基线非零稳定正例、RestartCount 递增拒绝、实例 ID 切换
+  拒绝；本机候选包重新绑定最终 SHA。
+
 ## 开发快照 0.1.363（取消封存索引推断规则，原样捕获源集合）
 
 ### Removed
@@ -10,8 +29,8 @@
 - 删除 `parent_chunk_id` 的类型搭配门槛：不再要求 parent 只能是 `parent_text`，也不
   对 summary/OCR/caption 指定 parent 类型。保留父引用存在、同 knowledge 等实际引用
   完整性；不补关联、不改源数据。
-- 同步移除该推断在 preflight/archive/load/replay/writeset 的共用校验和已无用途的
-  worker 永久失败分类；旧快照、旧失败记录原样保留，不篡改历史状态。
+- 同步移除该推断在 preflight/archive/load/replay/writeset 的共用校验和当时已无
+  用途的 worker 永久失败分类；旧快照、旧失败记录原样保留，不篡改历史状态。
 - 0.1.362 的索引覆盖门槛未部署，现被本版本取消；0.1.362 原文保留为历史，不再作为
   当前契约。
 
diff --git a/cmd/worker/library_capture_terminal_test.go b/cmd/worker/library_capture_terminal_test.go
new file mode 100644
index 0000000..e2704d0
--- /dev/null
+++ b/cmd/worker/library_capture_terminal_test.go
@@ -0,0 +1,65 @@
+package main
+
+import (
+	"errors"
+	"strings"
+	"testing"
+
+	"knowledge-governance/internal/jobs"
+)
+
+// R3g: only retained deterministic capture failures become permanent after the
+// agent has recovered the writer. Cancelled body-index coverage markers are
+// deliberately absent.
+func TestRetainedLibraryCaptureFailuresArePermanent(t *testing.T) {
+	for _, marker := range []string{
+		"missing library generated question index",
+		"empty library index content",
+	} {
+		t.Run(marker, func(t *testing.T) {
+			original := errors.New("LIBRARYCTL_FAILED: " + marker + "；已执行 recover 并确认写入者恢复")
+			got := terminalLibraryCaptureError(original)
+			terminal, code := jobs.Terminal(got)
+			if !terminal || code != jobs.ErrCodeValidationFailed {
+				t.Fatalf("retained validation failure must park immediately: terminal=%v code=%q err=%v", terminal, code, got)
+			}
+			if got.Error() != original.Error() {
+				t.Fatalf("original message changed: got %q want %q", got.Error(), original.Error())
+			}
+		})
+	}
+}
+
+func TestCancelledCoverageFailureStaysRetryable(t *testing.T) {
+	for _, marker := range []string{
+		"unverified legacy library chunk index coverage",
+		"missing indexed library chunk",
+	} {
+		err := terminalLibraryCaptureError(errors.New(marker + "；已执行 recover 并确认写入者恢复"))
+		if terminal, code := jobs.Terminal(err); terminal {
+			t.Fatalf("cancelled marker %q must not be terminal; code=%q", marker, code)
+		}
+	}
+}
+
+func TestTransientLibraryCaptureFailureStaysRetryable(t *testing.T) {
+	for _, message := range []string{
+		"library agent is unreachable",
+		"context deadline exceeded",
+		`LIBRARYCTL_FAILED: job "lib-internal-x" already exists with state "failed"；已执行 recover 并确认写入者恢复`,
+		"missing library generated question index; writer restore not confirmed",
+	} {
+		got := terminalLibraryCaptureError(errors.New(message))
+		if terminal, code := jobs.Terminal(got); terminal {
+			t.Fatalf("%q must stay retryable, got terminal code=%q", message, code)
+		}
+	}
+}
+
+func TestRetainedFailureDoesNotChangeMessage(t *testing.T) {
+	original := errors.New("LIBRARYCTL_FAILED: missing library generated question index；已执行 recover 并确认写入者恢复")
+	got := terminalLibraryCaptureError(original)
+	if !strings.Contains(got.Error(), "missing library generated question index") {
+		t.Fatalf("lost original cause: %v", got)
+	}
+}
diff --git a/cmd/worker/main.go b/cmd/worker/main.go
index 022d715..c65e784 100644
--- a/cmd/worker/main.go
+++ b/cmd/worker/main.go
@@ -101,6 +101,27 @@ func stageSizesFrom(manifest librarysnapshot.Manifest) map[string]stageSize {
 // libraryCaptureJobType is shared with the API which enqueues it.
 const libraryCaptureJobType = "library.capture"
 
+// Retained deterministic source-content failures: the agent has already
+// restored the writer, so retrying the same journal only replaces the first
+// cause with "already exists". Body-index coverage markers are intentionally
+// absent; that inferred rule was removed in R3f.
+var terminalLibraryCaptureMarkers = []string{
+	"missing library generated question index",
+	"empty library index content",
+}
+
+func terminalLibraryCaptureError(err error) error {
+	if err == nil || !strings.Contains(err.Error(), "已执行 recover 并确认写入者恢复") {
+		return err
+	}
+	for _, marker := range terminalLibraryCaptureMarkers {
+		if strings.Contains(err.Error(), marker) {
+			return jobs.Permanent(jobs.ErrCodeValidationFailed, err)
+		}
+	}
+	return err
+}
+
 // librarySyncJobType 是生产同步作业的队列类型；与封存严格分开，状态不共用。
 const librarySyncJobType = "library.sync"
 
@@ -365,7 +386,7 @@ func workerHandlers(store *postgresstore.Store, config appconfig.Config) (map[st
 				_ = store.AdvanceLibraryJob(ctx, libraryJobID, governance.LibraryJobFailed, "export", err.Error(),
 					"agent 已执行恢复检查；确认来源 healthy 后可重试同一作业号", "", "", finishedAt)
 				log.Printf("library capture failed scope=%s capture_job=%s: %v", payload.Scope, payload.CaptureJob, err)
-				return err
+				return terminalLibraryCaptureError(err)
 			}
 			// 执行后复核：结果里 agent 自报的身份必须还是期望实例，否则这次封存
 			// 可能来自别的栈，绝不能登记成"本实例的测试封存"。