初始化 Makelore 项目协作文档

需求：为客户端修复任务建立独立 worktree 所有权与项目记忆门禁。

实现：引入标准 .project-docs 模板，不修改现有客户端业务代码。

.project-docs/05-agent-entry/integration-gate.md

@@ -0,0 +1,14 @@
+# Integration Gate
+
+Use this gate to promote completed task facts into canonical project memory.
+
+## Requirements
+
+- Run in an exclusively owned integration worktree.
+- Hold the repository integration lock.
+- Verify the task commits being integrated are present.
+- Review task promotion candidates and semantic conflicts.
+- Ask before changing architecture direction, product behavior, or accepted decisions.
+- Record source task or merge commits under `Integrated Through` in `current-state.md`.
+
+Do not resolve meaningful document conflicts with `ours`, `theirs`, or union merge rules.