feat(pi-permission-system): AutoReview 改为跟随主模型的对话式工具调用审查

AutoReview：

- 审查器回到 Codex Guardian 风格的对话式审查，默认跟随会话当前主模型
  （每次审查实时读取 ctx.model）；provider/model 必须同时设置才固定审查
  模型，只设其一视为配置错误并转人工。
- 结论只通过 approve / reject 两个工具给出，参数仅 reason；不强制
  toolChoice，正文文本（即使是合法 JSON）一律忽略。
- approve 自动放行；reject 转人工并在弹窗显示理由（标注模型生成）。
  超时、Provider 错误、截断、未调用工具、多次调用、参数无效等异常同样
  转人工，并附固定的系统说明；用户按 Esc 中止时直接拒绝。
- 模型调用改为 modelRegistry.streamSimple(...).result()：Pi 1.3.0 面向
  扩展的 ModelRegistry 没有 completeSimple，原写法在真实环境中每次都会
  转人工。
- 对话记录保留可信度标注；工具结果在有更短的 pi-compaction 摘要时替换
  为摘要；token 估算改为非 ASCII 字符按 1 token 计；预算可配置。
- 同一条用户消息内完全相同的请求只缓存 approve 结论。
- 默认 reasoning low、总超时 30 秒、最多 2 次尝试、maxOutputTokens 4000。

删除：

- 未发布过的 TypeSafe Jev 分类器实现、DenialCircuitBreaker。
- 整个 annotator 机制（model-explanation、注册表、registerAnnotator、
  provider-timeout）；annotators 配置键保留为已弃用并忽略，避免旧配置
  被拒绝。

测试：

- 新增 reviewer / transcript / 弹窗说明 / 默认配置测试；清理重复、恒真
  或只测实现细节的旧测试。
- 使用 deepseek-v4.1-flash 实测 5 个场景各 5 次，25 次结论全部符合预期。

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

pi-permission-system/test/authority/subagent-context.test.ts

@@ -1,5 +1,4 @@
 import { afterEach, describe, expect, test, vi } from "vitest";
-import { SUBAGENT_ENV_HINT_KEYS } from "#src/authority/permission-forwarding";
 import {
   isRegisteredSubagentChild,
   isSubagentExecutionContext,
@@ -258,23 +257,6 @@ describe("isSubagentExecutionContext — env hint detection", () => {
     ).toBe(true);
   });
 
-  test("covers all declared SUBAGENT_ENV_HINT_KEYS", () => {
-    // Verify the keys we test match what the module declares.
-    expect(SUBAGENT_ENV_HINT_KEYS).toContain("PI_IS_SUBAGENT");
-    expect(SUBAGENT_ENV_HINT_KEYS).toContain("PI_SUBAGENT_SESSION_ID");
-    expect(SUBAGENT_ENV_HINT_KEYS).toContain("PI_AGENT_ROUTER_SUBAGENT");
-    // nicobailon/pi-subagents
-    expect(SUBAGENT_ENV_HINT_KEYS).toContain("PI_SUBAGENT_CHILD");
-    expect(SUBAGENT_ENV_HINT_KEYS).toContain("PI_SUBAGENT_RUN_ID");
-    expect(SUBAGENT_ENV_HINT_KEYS).toContain("PI_SUBAGENT_CHILD_AGENT");
-    expect(SUBAGENT_ENV_HINT_KEYS).toContain("PI_SUBAGENT_DEPTH");
-    // HazAT/pi-interactive-subagents
-    expect(SUBAGENT_ENV_HINT_KEYS).toContain("PI_SUBAGENT_NAME");
-    expect(SUBAGENT_ENV_HINT_KEYS).toContain("PI_SUBAGENT_ID");
-    expect(SUBAGENT_ENV_HINT_KEYS).toContain("PI_SUBAGENT_SESSION");
-    expect(SUBAGENT_ENV_HINT_KEYS).toContain("PI_SUBAGENT_ACTIVITY_FILE");
-  });
-
   test("returns false when env hint value is empty string", () => {
     vi.stubEnv("PI_IS_SUBAGENT", "");
     expect(
@@ -471,19 +453,6 @@ describe("isSubagentExecutionContext — registry detection", () => {
     ).toBe(true);
   });
 
-  test("returns true when registered session has a parentSessionId", () => {
-    const registry = new SubagentSessionRegistry();
-    registry.register(childSessionId, { parentSessionId: "parent-123" });
-    expect(
-      isSubagentExecutionContext(
-        makeCtx(outsideDir, childSessionId),
-        subagentRoot,
-        posixPathFlavor,
-        registry,
-      ),
-    ).toBe(true);
-  });
-
   test("returns false when registry is provided but session id is not registered", () => {
     const registry = new SubagentSessionRegistry();
     expect(
@@ -508,22 +477,6 @@ describe("isSubagentExecutionContext — registry detection", () => {
     ).toBe(false);
   });
 
-  test("registry check takes priority over env var detection", () => {
-    // Registry says registered; env var not set — should still return true.
-    const registry = new SubagentSessionRegistry();
-    registry.register(childSessionId, {});
-    // Confirm no env var is set
-    expect(process.env.PI_IS_SUBAGENT).toBeUndefined();
-    expect(
-      isSubagentExecutionContext(
-        makeCtx(outsideDir, childSessionId),
-        subagentRoot,
-        posixPathFlavor,
-        registry,
-      ),
-    ).toBe(true);
-  });
-
   test("unregistered session falls through to env var detection", () => {
     vi.stubEnv("PI_IS_SUBAGENT", "true");
     const registry = new SubagentSessionRegistry(); // empty — childSessionId not registered
@@ -537,11 +490,4 @@ describe("isSubagentExecutionContext — registry detection", () => {
       ),
     ).toBe(true);
   });
-
-  test("no registry passed — existing behaviour unchanged", () => {
-    // Ensure the parameter is truly optional (no registry arg)
-    expect(
-      isSubagentExecutionContext(makeCtx(null), subagentRoot, posixPathFlavor),
-    ).toBe(false);
-  });
 });