test: remove duplicate getSpawnDir/getHistoryPath tests from history.test.ts (#2426)

These path-utility tests were duplicated between history.test.ts and
paths.test.ts. Consolidate into paths.test.ts (the canonical location)
and move 4 unique test cases (dot-relative path, .. resolution, outside
home rejection, home-as-SPAWN_HOME) that only existed in history.test.ts.

Removes 64 lines of duplicate test code with zero coverage loss.

Co-authored-by: spawn-qa-bot <qa@openrouter.ai>

Author: la14-1

packages/cli/src/__tests__/history.test.ts

@@ -4,7 +4,6 @@ import { afterEach, beforeEach, describe, expect, it } from "bun:test";
 import { existsSync, mkdirSync, readFileSync, rmSync, writeFileSync } from "node:fs";
 import { join } from "node:path";
 import { filterHistory, HISTORY_SCHEMA_VERSION, loadHistory, saveSpawnRecord } from "../history.js";
-import { getHistoryPath, getSpawnDir, getUserHome } from "../shared/paths.js";
 
 describe("history", () => {
   let testDir: string;
@@ -32,69 +31,6 @@ describe("history", () => {
     }
   });
 
-  // ── getSpawnDir ─────────────────────────────────────────────────────────
-
-  describe("getSpawnDir", () => {
-    it("returns SPAWN_HOME when set to valid path within home", () => {
-      const validPath = join(process.env.HOME ?? "", "custom", "spawn", "dir");
-      process.env.SPAWN_HOME = validPath;
-      expect(getSpawnDir()).toBe(validPath);
-    });
-
-    it("falls back to ~/.spawn when SPAWN_HOME is not set", () => {
-      delete process.env.SPAWN_HOME;
-      expect(getSpawnDir()).toBe(join(getUserHome(), ".spawn"));
-    });
-
-    it("throws for relative SPAWN_HOME path", () => {
-      process.env.SPAWN_HOME = "relative/path";
-      expect(() => getSpawnDir()).toThrow("must be an absolute path");
-    });
-
-    it("throws for dot-relative SPAWN_HOME path", () => {
-      process.env.SPAWN_HOME = "./local/dir";
-      expect(() => getSpawnDir()).toThrow("must be an absolute path");
-    });
-
-    it("resolves .. segments in absolute SPAWN_HOME within home", () => {
-      const pathWithDots = join(process.env.HOME ?? "", "foo", "..", "bar");
-      process.env.SPAWN_HOME = pathWithDots;
-      expect(getSpawnDir()).toBe(join(process.env.HOME ?? "", "bar"));
-    });
-
-    it("accepts normal absolute SPAWN_HOME within home", () => {
-      const validPath = join(process.env.HOME ?? "", ".spawn");
-      process.env.SPAWN_HOME = validPath;
-      expect(getSpawnDir()).toBe(validPath);
-    });
-
-    it("throws for SPAWN_HOME outside home directory", () => {
-      process.env.SPAWN_HOME = "/tmp/spawn";
-      expect(() => getSpawnDir()).toThrow("must be within your home directory");
-    });
-
-    it("throws for path traversal attempt to escape home directory", () => {
-      // Attempt to traverse outside home using .. segments
-      // e.g., /home/user/../../etc/.spawn
-      const traversalPath = join(process.env.HOME ?? "", "..", "..", "etc", ".spawn");
-      process.env.SPAWN_HOME = traversalPath;
-      expect(() => getSpawnDir()).toThrow("must be within your home directory");
-    });
-
-    it("accepts home directory itself as SPAWN_HOME", () => {
-      process.env.SPAWN_HOME = process.env.HOME ?? "";
-      expect(getSpawnDir()).toBe(process.env.HOME ?? "");
-    });
-  });
-
-  // ── getHistoryPath ──────────────────────────────────────────────────────
-
-  describe("getHistoryPath", () => {
-    it("returns history.json inside spawn dir", () => {
-      expect(getHistoryPath()).toBe(join(testDir, "history.json"));
-    });
-  });
-
   // ── loadHistory ─────────────────────────────────────────────────────────
 
   describe("loadHistory", () => {

packages/cli/src/__tests__/paths.test.ts

@@ -55,10 +55,31 @@ describe("paths", () => {
       expect(() => getSpawnDir()).toThrow("must be an absolute path");
     });
 
+    it("rejects dot-relative SPAWN_HOME", () => {
+      process.env.SPAWN_HOME = "./local/dir";
+      expect(() => getSpawnDir()).toThrow("must be an absolute path");
+    });
+
+    it("resolves .. segments in absolute SPAWN_HOME within home", () => {
+      const pathWithDots = join(getUserHome(), "foo", "..", "bar");
+      process.env.SPAWN_HOME = pathWithDots;
+      expect(getSpawnDir()).toBe(join(getUserHome(), "bar"));
+    });
+
+    it("rejects SPAWN_HOME outside home directory", () => {
+      process.env.SPAWN_HOME = "/tmp/spawn";
+      expect(() => getSpawnDir()).toThrow("must be within your home directory");
+    });
+
     it("rejects path traversal outside home directory", () => {
       process.env.SPAWN_HOME = "/tmp/../../root/.spawn";
       expect(() => getSpawnDir()).toThrow("must be within your home directory");
     });
+
+    it("accepts home directory itself as SPAWN_HOME", () => {
+      process.env.SPAWN_HOME = getUserHome();
+      expect(getSpawnDir()).toBe(getUserHome());
+    });
   });
 
   describe("getHistoryPath", () => {