feat: initial commit - Jhonny Editor

- Adicionado estrutura completa do projeto
- Configurado MCP server para Premiere Pro
- Adicionado documentação e skills
- Configurado Gitignore para o projeto

code/tests/project-backup.test.ts

@@ -0,0 +1,41 @@
+import { mkdtempSync, readFileSync, statSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { describe, expect, it } from "vitest";
+import { createProjectBackup } from "../src/tools/recovery.js";
+
+describe("createProjectBackup", () => {
+  it("proves the recovery copy is byte-identical and leaves the source unchanged", () => {
+    const directory = mkdtempSync(join(tmpdir(), "premiere-project-backup-"));
+    const source = join(directory, "edit.prproj");
+    const contents = Buffer.from("premiere-project-fixture\nrevision=7\n", "utf8");
+    writeFileSync(source, contents);
+    const before = statSync(source);
+
+    const receipt = createProjectBackup(source, new Date("2026-08-23T17:00:00.000Z"));
+
+    expect(receipt).toMatchObject({
+      sourcePath: source,
+      sourceUnchanged: true,
+      byteIdentical: true,
+      sizeBytes: contents.length,
+    });
+    expect(readFileSync(source)).toEqual(contents);
+    expect(readFileSync(receipt.backupPath)).toEqual(contents);
+    expect(statSync(source).mtimeMs).toBe(before.mtimeMs);
+  });
+
+  it("fails closed for non-project files, missing files, and backup-name collisions", () => {
+    const directory = mkdtempSync(join(tmpdir(), "premiere-project-backup-"));
+    const textFile = join(directory, "notes.txt");
+    writeFileSync(textFile, "not a project");
+    expect(() => createProjectBackup(textFile)).toThrow(".prproj");
+    expect(() => createProjectBackup(join(directory, "missing.prproj"))).toThrow("does not exist");
+
+    const project = join(directory, "edit.prproj");
+    writeFileSync(project, "fixture");
+    const now = new Date("2026-08-23T17:00:00.000Z");
+    createProjectBackup(project, now);
+    expect(() => createProjectBackup(project, now)).toThrow();
+  });
+});