feat: rename bugfix-ship/requirement-flow to short-ship/long-ship with shared ship records

short-ship and long-ship share one ship-id record under .pouch/ship/<id>/.
specifier writes PRDs into spec/; delivery-loop appends evidence pointers.
Old names stay as deprecation stubs so existing installs keep working.

skills/ship/templates/current.template.yaml

@@ -0,0 +1,29 @@
+shipId: <ship-id>
+kind: short
+title: <short title>
+status: draft
+stopAt: null
+source:
+  kind: user
+  ref: null
+parentShipId: null
+childShipIds: []
+spec:
+  path: spec.md
+  revision: null
+  specStatus: null
+  prd: null
+  approvedRevision: null
+  reviews: null
+  handoff: null
+tasks:
+  path: tasks.yaml
+delivery:
+  stopAt: null
+  state: change_ready
+evidence:
+  testRuns: []
+  artifacts: []
+  deploys: []
+  prs: []
+  commits: []

skills/ship/templates/spec.template.md

@@ -0,0 +1,21 @@
+# <title>
+
+## 要做什么
+
+<用户可见的目标。>
+
+## 不做什么
+
+<明确排除的范围。>
+
+## 可观察验收
+
+- <能被浏览器、API 或真机看到的结果>
+
+## 怎么验
+
+- <命令、页面路径或手工步骤>
+
+## 故障证据
+
+<没有故障时删除本节。有则写复现步骤和根因。>

skills/ship/templates/status.template.md

@@ -0,0 +1,19 @@
+# <title>
+
+- ship id: `<ship-id>`
+- kind: `<kind>`
+- status: `<status>`
+- stopAt: `<stopAt>`
+- delivery: `<delivery.state>`
+
+## spec
+
+见 `spec.md`。
+
+## tasks
+
+见 `tasks.yaml`。
+
+## evidence
+
+测试、产物、部署、PR 和 commit 指针写在 `current.yaml` 的 `evidence`。

skills/ship/templates/tasks.template.yaml

@@ -0,0 +1,11 @@
+shipId: <ship-id>
+tasks:
+  - id: T-01
+    title: <short title>
+    dependsOn: []
+    expected:
+      - <observable acceptance signal>
+    verification:
+      - <how to verify>
+    status: open
+    stopAt: null