修复完整历史与运行态内存放大并重建发布包

.trellis/tasks/10-14-history-memory-audit/check.jsonl

@@ -0,0 +1,2 @@
+{"_example": "Fill with {\"file\": \"<path>\", \"reason\": \"<why>\"}. Put spec/research files only — no code paths. Run `python3 .trellis/scripts/get_context.py --mode packages` to list available specs. Delete this line once real entries are added."}
+{"file": ".trellis/spec/backend/session-history.md", "reason": "完整性与隔离回归"}

.trellis/tasks/10-14-history-memory-audit/implement.jsonl

@@ -0,0 +1,2 @@
+{"_example": "Fill with {\"file\": \"<path>\", \"reason\": \"<why>\"}. Put spec/research files only — no code paths. Run `python3 .trellis/scripts/get_context.py --mode packages` to list available specs. Delete this line once real entries are added."}
+{"file": ".trellis/spec/backend/session-history.md", "reason": "完整历史、可信修订与并发契约"}

.trellis/tasks/10-14-history-memory-audit/prd.md

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+# 完整历史内存修复
+
+保留已保存完整历史，修复整份 JSON 解析、复制、序列化基线导致的内存峰值。
+采用分块存储和按页读取，迁移旧归档时避免全量读取；保留原子提交与可信并发合并。
+验证生产入口、旧归档迁移、清空删除、运行态恢复和大归档内存。测试目录必须隔离。
+
+具体计划与发现见 .planning/2026-10-14-history-memory-fix/。

.trellis/tasks/10-14-history-memory-audit/task.json

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+{
+  "id": "history-memory-audit",
+  "name": "history-memory-audit",
+  "title": "修复完整历史归档内存回归",
+  "description": "保留完整历史，使用不可变消息块、原子清单提交、分页读取和流式旧格式迁移，消除默认加载与保存的整份正文复制。",
+  "status": "completed",
+  "dev_type": null,
+  "scope": null,
+  "package": null,
+  "priority": "P2",
+  "creator": "shiyue",
+  "assignee": "shiyue",
+  "createdAt": "2026-10-14",
+  "completedAt": "2026-10-14",
+  "branch": null,
+  "base_branch": "main",
+  "worktree_path": null,
+  "commit": null,
+  "pr_url": null,
+  "subtasks": [],
+  "children": [],
+  "parent": null,
+  "relatedFiles": [
+    "lib/session-history-store.js",
+    "lib/json-persistence.js",
+    "server.js",
+    "scripts/session-history-store-unit.js",
+    "scripts/session-history-memory-unit.js",
+    "scripts/history-runtime-completion-unit.js",
+    "scripts/codexapp-retry-history-unit.js",
+    "scripts/regression.js",
+    ".trellis/spec/backend/session-history.md"
+  ],
+  "notes": "修复完成：34项完整历史持久化回归及完整隔离集成回归通过。70.5MiB合成旧归档在256MiB堆上限下流式迁移，RSS峰值145.9MiB；1128条消息经67页逐条摘要校验完整，6次尾部保存复用37个原始块，旧文件单次读取最多64KiB。语法与差异检查通过。未修改生产历史，未重启服务，运行进程尚未生效。",
+  "meta": {}
+}