diff --git a/.trellis/tasks/04-27-continue-improve-program/check.jsonl b/.trellis/tasks/archive/2026-04/04-27-continue-improve-program/check.jsonl
similarity index 100%
rename from .trellis/tasks/04-27-continue-improve-program/check.jsonl
rename to .trellis/tasks/archive/2026-04/04-27-continue-improve-program/check.jsonl
diff --git a/.trellis/tasks/04-27-continue-improve-program/implement.jsonl b/.trellis/tasks/archive/2026-04/04-27-continue-improve-program/implement.jsonl
similarity index 100%
rename from .trellis/tasks/04-27-continue-improve-program/implement.jsonl
rename to .trellis/tasks/archive/2026-04/04-27-continue-improve-program/implement.jsonl
diff --git a/.trellis/tasks/04-27-continue-improve-program/prd.md b/.trellis/tasks/archive/2026-04/04-27-continue-improve-program/prd.md
similarity index 100%
rename from .trellis/tasks/04-27-continue-improve-program/prd.md
rename to .trellis/tasks/archive/2026-04/04-27-continue-improve-program/prd.md
diff --git a/.trellis/tasks/04-27-continue-improve-program/task.json b/.trellis/tasks/archive/2026-04/04-27-continue-improve-program/task.json
similarity index 89%
rename from .trellis/tasks/04-27-continue-improve-program/task.json
rename to .trellis/tasks/archive/2026-04/04-27-continue-improve-program/task.json
index 1bcf1ac..e17c22e 100644
--- a/.trellis/tasks/04-27-continue-improve-program/task.json
+++ b/.trellis/tasks/archive/2026-04/04-27-continue-improve-program/task.json
@@ -3,7 +3,7 @@
   "name": "continue-improve-program",
   "title": "brainstorm: 继续完善程序",
   "description": "",
-  "status": "in_progress",
+  "status": "completed",
   "dev_type": null,
   "scope": null,
   "package": null,
@@ -11,7 +11,7 @@
   "creator": "Zzzz",
   "assignee": "Zzzz",
   "createdAt": "2026-04-27",
-  "completedAt": null,
+  "completedAt": "2026-04-27",
   "branch": null,
   "base_branch": "master",
   "worktree_path": null,
diff --git a/.trellis/workspace/Zzzz/index.md b/.trellis/workspace/Zzzz/index.md
index 57def1b..806111c 100644
--- a/.trellis/workspace/Zzzz/index.md
+++ b/.trellis/workspace/Zzzz/index.md
@@ -8,7 +8,7 @@
 
 <!-- @@@auto:current-status -->
 - **Active File**: `journal-1.md`
-- **Total Sessions**: 2
+- **Total Sessions**: 3
 - **Last Active**: 2026-04-27
 <!-- @@@/auto:current-status -->
 
@@ -19,7 +19,7 @@
 <!-- @@@auto:active-documents -->
 | File | Lines | Status |
 |------|-------|--------|
-| `journal-1.md` | ~143 | Active |
+| `journal-1.md` | ~176 | Active |
 <!-- @@@/auto:active-documents -->
 
 ---
@@ -29,6 +29,7 @@
 <!-- @@@auto:session-history -->
 | # | Date | Title | Commits | Branch |
 |---|------|-------|---------|--------|
+| 3 | 2026-04-27 | Book catalog and management slice | `763830f` | `master` |
 | 2 | 2026-04-27 | Initial Java Web scaffold and login skeleton | `a297d7a` | `master` |
 | 1 | 2026-04-27 | Bootstrap Guidelines | - | `-` |
 <!-- @@@/auto:session-history -->
diff --git a/.trellis/workspace/Zzzz/journal-1.md b/.trellis/workspace/Zzzz/journal-1.md
index 3daf4d1..70a402c 100644
--- a/.trellis/workspace/Zzzz/journal-1.md
+++ b/.trellis/workspace/Zzzz/journal-1.md
@@ -141,3 +141,36 @@ Built the initial JSP Servlet MySQL project scaffold, login and permission skele
 ### Next Steps
 
 - None - task complete
+
+
+## Session 3: Book catalog and management slice
+
+**Date**: 2026-04-27
+**Task**: Book catalog and management slice
+**Branch**: `master`
+
+### Summary
+
+Added book catalog search, basic book management, schema updates, JSP pages, service checks, and Trellis spec updates.
+
+### Main Changes
+
+(Add details)
+
+### Git Commits
+
+| Hash | Message |
+|------|---------|
+| `763830f` | (see git log) |
+
+### Testing
+
+- [OK] (Add test results)
+
+### Status
+
+[OK] **Completed**
+
+### Next Steps
+
+- None - task complete