feat(projects): auto-create NAS folder for order-spawned projects

Manual project creation already creates the 02_PROJEKTY/<number>_<name>
folder (projects.service.createProject). Projects created from an order —
both from an accepted offer (createOrderFromQuotation) and a manual
offer-less order (createOrder) — did not, so they had no NAS folder until
a user opened the project and clicked "create folder" or uploaded a file.

- orders.service: best-effort, non-fatal createProjectFolder after each
  project-creating transaction commits (mirrors createProject; gated on
  isConfigured(), logs on failure, never rolls back the order).
- projects.service: log when the existing auto-create returns false
  (was silently discarded — CLAUDE.md known-issue #4).
- nas-file-manager: optional constructor basePath seam for tests.
- tests: NasFileManager.createProjectFolder coverage — naming, idempotency,
  Czech diacritics, empty name, not-mounted (152 -> 158 tests).

Bump version to 2.0.3.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/__tests__/nas-project-folder.test.ts

@@ -0,0 +1,70 @@
+import { describe, it, expect, beforeEach, afterEach } from "vitest";
+import fs from "fs";
+import os from "os";
+import path from "path";
+import { NasFileManager } from "../services/nas-file-manager";
+
+/**
+ * Folder auto-creation primitive used by both the manual project-create path
+ * (projects.service createProject) and the order→project paths (orders.service
+ * createOrder / createOrderFromQuotation). Uses an isolated temp dir via the
+ * constructor seam so it is deterministic and passes even where the real NAS
+ * (Z:) is not mounted.
+ */
+describe("NasFileManager.createProjectFolder", () => {
+  let tmpBase: string;
+  let nas: NasFileManager;
+
+  beforeEach(() => {
+    tmpBase = fs.mkdtempSync(path.join(os.tmpdir(), "nas-proj-"));
+    nas = new NasFileManager(tmpBase);
+  });
+
+  afterEach(() => {
+    fs.rmSync(tmpBase, { recursive: true, force: true });
+  });
+
+  it("creates a <number>_<name> folder for a new project", () => {
+    const ok = nas.createProjectFolder("26710001", "Rekonstrukce haly");
+    expect(ok).toBe(true);
+    expect(
+      fs.existsSync(path.join(tmpBase, "26710001_Rekonstrukce_haly")),
+    ).toBe(true);
+  });
+
+  it("is idempotent — a second call does not create a duplicate", () => {
+    expect(nas.createProjectFolder("26710002", "Hala")).toBe(true);
+    expect(nas.createProjectFolder("26710002", "Hala")).toBe(true);
+    const matches = fs
+      .readdirSync(tmpBase)
+      .filter((e) => e.startsWith("26710002_"));
+    expect(matches).toEqual(["26710002_Hala"]);
+  });
+
+  it("preserves Czech diacritics (no transliteration)", () => {
+    expect(nas.createProjectFolder("26710003", "Měření haly")).toBe(true);
+    expect(fs.existsSync(path.join(tmpBase, "26710003_Měření_haly"))).toBe(
+      true,
+    );
+  });
+
+  it("strips illegal characters and collapses spaces", () => {
+    expect(nas.createProjectFolder("26710004", "A / B:  C")).toBe(true);
+    expect(fs.existsSync(path.join(tmpBase, "26710004_A_B_C"))).toBe(true);
+  });
+
+  it("handles an empty name without crashing (trailing underscore)", () => {
+    expect(nas.createProjectFolder("26710005", "")).toBe(true);
+    expect(fs.existsSync(path.join(tmpBase, "26710005_"))).toBe(true);
+  });
+
+  it("returns false and creates nothing when the NAS base is not mounted", () => {
+    const missing = new NasFileManager(
+      path.join(tmpBase, "does-not-exist-subdir"),
+    );
+    expect(missing.createProjectFolder("26710006", "X")).toBe(false);
+    expect(fs.existsSync(path.join(tmpBase, "does-not-exist-subdir"))).toBe(
+      false,
+    );
+  });
+});