chore: Pi 开发依赖跟随最新版并去掉测试里的固定版本号

- pi-hermes-memory / pi-notify / pi-permission-system / pi-subagents 的
  @earendil-works/* devDependencies 改为 latest，pi-rtk-optimizer 放开
  peer 范围；各子包锁文件刷新到 Pi 1.3.0，测试改为验证当前宿主 API。
- 新增 scripts/update-pi-devdeps.sh，统一刷新根与子包锁文件中的 Pi 版本。
- pi-subagents 适配 Pi 1.3：mention clone 改走 systemPromptOverride、
  BOM frontmatter、e2e 读取规范化后的 system 消息与工具列表。
- 根测试不再写死 ssh2 / jiti / better-sqlite3 / context-mode 版本号，
  改为精确版本格式与锁文件一致性断言；新增 latest 约束测试。

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pi-subagents/test/subagents-print-mode-e2e.test.ts

@@ -21,6 +21,8 @@ import {
   agentCall,
   agentToolCalls,
   agentToolResults,
+  contextSystemPrompt,
+  contextToolNames,
   conversationText,
   invokedToolNames,
   type PrintModeRun,
@@ -92,7 +94,7 @@ describe.skipIf(LIVE)("subagents print-mode e2e (scripted faux, real pi-mono)",
     //     finishes → the child's own model turn actually runs (≥3 calls).
     const sleep = (ms: number) => new Promise((r) => setTimeout(r, ms));
     const respond = async (ctx: Context) => {
-      const isParent = (ctx.tools ?? []).some((t) => t.name === "Agent");
+      const isParent = contextToolNames(ctx).includes("Agent");
       if (!isParent) {
         await sleep(80); // child takes long enough that a non-held parent exits first
         return "CHILD_BG_RAN";
@@ -151,7 +153,7 @@ describe.skipIf(LIVE)("subagents print-mode e2e (scripted faux, real pi-mono)",
         parentFinal: "Reported.",
         // The child reflects whether the frontmatter body reached its own prompt.
         subagent: (ctx: Context) =>
-          `child saw: ${ctx.systemPrompt?.includes(MARKER) ? MARKER : "MISSING"}`,
+          `child saw: ${contextSystemPrompt(ctx).includes(MARKER) ? MARKER : "MISSING"}`,
       }),
     });
 
@@ -185,7 +187,7 @@ describe.skipIf(LIVE)("subagents print-mode e2e (scripted faux, real pi-mono)",
         }),
         parentFinal: "Reported.",
         subagent: (ctx: Context) =>
-          `child saw: ${ctx.systemPrompt?.includes(MARKER) ? MARKER : "MISSING"}`,
+          `child saw: ${contextSystemPrompt(ctx).includes(MARKER) ? MARKER : "MISSING"}`,
       }),
     });