refactor: unify agent session persistence

tests/skills/store.test.ts

@@ -0,0 +1,67 @@
+import { afterEach, beforeEach, describe, expect, it } from "bun:test";
+import { mkdir, mkdtemp, readFile, rm } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+
+import { SkillStore } from "../../src/skills/store.js";
+
+describe("SkillStore", () => {
+  let originalCwd: string;
+  let tempDir: string;
+  let alternateCwd: string;
+  let skillsRoot: string;
+  let backupRoot: string;
+  let store: SkillStore;
+
+  beforeEach(async () => {
+    originalCwd = process.cwd();
+    tempDir = await mkdtemp(join(tmpdir(), "tjwater-skills-"));
+    alternateCwd = join(tempDir, "runtime-cwd");
+    skillsRoot = join(tempDir, "project", ".opencode", "skills");
+    backupRoot = join(tempDir, "backup", "skills");
+    store = new SkillStore(skillsRoot, backupRoot);
+  });
+
+  afterEach(async () => {
+    process.chdir(originalCwd);
+    await rm(tempDir, { force: true, recursive: true });
+  });
+
+  it("writes scripts under the configured skills root regardless of process cwd", async () => {
+    await mkdir(alternateCwd, { recursive: true });
+    process.chdir(alternateCwd);
+
+    const result = await store.writeScript(
+      "workflow/hydraulic-bottleneck-analysis",
+      "scripts/analyze.py",
+      "print('ok')\n",
+    );
+
+    expect(result).toEqual({
+      changed: true,
+      detail: "script written",
+      target: join(
+        skillsRoot,
+        "workflow",
+        "hydraulic-bottleneck-analysis",
+        "scripts",
+        "analyze.py",
+      ),
+    });
+    await expect(readFile(result.target, "utf8")).resolves.toBe("print('ok')\n");
+  });
+
+  it("rejects script paths outside scripts/*.py", async () => {
+    const result = await store.writeScript(
+      "workflow/hydraulic-bottleneck-analysis",
+      "analyze.ts",
+      "console.log('ok')\n",
+    );
+
+    expect(result).toEqual({
+      changed: false,
+      detail: "invalid script file_path",
+      target: "",
+    });
+  });
+});