feat: 基于 process.argv 推断命令前缀，修复 bunx 误检测

tests/core/pm.test.ts

@@ -1,6 +1,6 @@
 import { describe, it, expect } from "bun:test";
 import {
-  inferFromEnvironment,
+  inferFromProcess,
   getPmPrefix,
   DEFAULT_PREFIX,
   getFallbackNote,
@@ -8,29 +8,105 @@ import {
 } from "../../src/core/pm.ts";
 import type { RuneConfig } from "../../src/types.ts";
 
-describe("inferFromEnvironment", () => {
-  it("execPath 包含 bun 时返回 bunx 前缀", () => {
-    const result = inferFromEnvironment("/home/user/.bun/bin/bun", undefined);
+describe("inferFromProcess", () => {
+  it("argv 包含 bun 缓存路径时返回 bunx 前缀", () => {
+    const result = inferFromProcess(
+      ["/usr/local/bin/bun", "/home/user/.bun/cache/@lanyuanxiaoyao-rune/bin/rune.ts"],
+      undefined,
+    );
     expect(result).toBe("bunx @lanyuanxiaoyao/rune");
   });
 
-  it("npm_config_user_agent 包含 pnpm 时返回 pnpx 前缀", () => {
-    const result = inferFromEnvironment("/usr/bin/node", "pnpm/9.0.0");
-    expect(result).toBe("pnpx @lanyuanxiaoyao/rune");
+  it("argv Windows 风格 bun 缓存路径时返回 bunx 前缀", () => {
+    const result = inferFromProcess(
+      [
+        "C:\\Users\\user\\.bun\\bin\\bun.exe",
+        "C:\\Users\\user\\.bun\\cache\\@lanyuanxiaoyao-rune\\bin\\rune.ts",
+      ],
+      undefined,
+    );
+    expect(result).toBe("bunx @lanyuanxiaoyao/rune");
   });
 
-  it("npm_config_user_agent 包含 npm 时返回 npx 前缀", () => {
-    const result = inferFromEnvironment("/usr/bin/node", "npm/10.0.0");
+  it("argv 包含 _npx 路径时返回 npx 前缀", () => {
+    const result = inferFromProcess(
+      ["/usr/local/bin/node", "/home/user/.npm/_npx/abc123/node_modules/.bin/rune"],
+      undefined,
+    );
     expect(result).toBe("npx @lanyuanxiaoyao/rune");
   });
 
-  it("pnpm 优先于 npm（userAgent 同时包含两者时）", () => {
-    const result = inferFromEnvironment("/usr/bin/node", "pnpm/9.0.0 npm/10.0.0");
+  it("argv 包含 npm-cache 路径时返回 npx 前缀", () => {
+    const result = inferFromProcess(
+      ["/usr/local/bin/node", "/home/user/.npm-cache/_npx/abc123/bin/rune"],
+      undefined,
+    );
+    expect(result).toBe("npx @lanyuanxiaoyao/rune");
+  });
+
+  it("argv 包含 .pnpm 路径时返回 pnpx 前缀", () => {
+    const result = inferFromProcess(
+      ["/usr/local/bin/node", "/home/user/.pnpm/store/@lanyuanxiaoyao-rune/bin/rune"],
+      undefined,
+    );
     expect(result).toBe("pnpx @lanyuanxiaoyao/rune");
   });
 
-  it("无法推断时返回 null", () => {
-    const result = inferFromEnvironment("/usr/bin/node", undefined);
+  it("argv 无法推断但 userAgent 包含 bun 时返回 bunx 前缀", () => {
+    const result = inferFromProcess(
+      ["/usr/local/bin/bun", "/home/user/projects/app/run.ts"],
+      "bun/1.0.0",
+    );
+    expect(result).toBe("bunx @lanyuanxiaoyao/rune");
+  });
+
+  it("argv 无法推断但 userAgent 包含 pnpm 时返回 pnpx 前缀", () => {
+    const result = inferFromProcess(
+      ["/usr/local/bin/node", "/home/user/projects/app/run.ts"],
+      "pnpm/9.0.0",
+    );
+    expect(result).toBe("pnpx @lanyuanxiaoyao/rune");
+  });
+
+  it("argv 无法推断但 userAgent 包含 yarn 时返回 yarn dlx 前缀", () => {
+    const result = inferFromProcess(
+      ["/usr/local/bin/node", "/home/user/projects/app/run.ts"],
+      "yarn/4.0.0",
+    );
+    expect(result).toBe("yarn dlx @lanyuanxiaoyao/rune");
+  });
+
+  it("argv 无法推断但 userAgent 包含 npm 时返回 npx 前缀", () => {
+    const result = inferFromProcess(
+      ["/usr/local/bin/node", "/home/user/projects/app/run.ts"],
+      "npm/10.0.0",
+    );
+    expect(result).toBe("npx @lanyuanxiaoyao/rune");
+  });
+
+  it("userAgent 同时包含 pnpm 和 npm 时 pnpm 优先", () => {
+    const result = inferFromProcess(
+      ["/usr/local/bin/node", "/home/user/projects/app/run.ts"],
+      "pnpm/9.0.0 npm/10.0.0",
+    );
+    expect(result).toBe("pnpx @lanyuanxiaoyao/rune");
+  });
+
+  it("argv 和 userAgent 都无法推断时返回 null", () => {
+    const result = inferFromProcess(
+      ["/usr/local/bin/node", "/home/user/projects/app/run.ts"],
+      undefined,
+    );
+    expect(result).toBeNull();
+  });
+
+  it("argv 为空数组且无 userAgent 时返回 null", () => {
+    const result = inferFromProcess([], undefined);
+    expect(result).toBeNull();
+  });
+
+  it("argv 只有一个元素且无 userAgent 时返回 null", () => {
+    const result = inferFromProcess(["/usr/local/bin/node"], undefined);
     expect(result).toBeNull();
   });
 });