Add self-update command and fix hash mismatch after pull

- kisync update: show available releases from Gitea
- kisync update --apply: download and replace exe in-place
- Background update check after every command (non-blocking)
- Fix: compute hash from disk-read object (not server object) to prevent
  false "modified" status after pull due to line-ending differences

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/index.ts

@@ -6,13 +6,16 @@ import { initCommand } from './commands/init';
 import { pullCommand } from './commands/pull';
 import { pushCommand } from './commands/push';
 import { statusCommand } from './commands/status';
+import { updateCommand, updateApplyCommand, checkForUpdateBackground } from './commands/update';
+
+const VERSION = '1.0.0';
 
 const program = new Command();
 
 program
   .name('kisync')
   .description('CLI tool for syncing local folders with KIS API Builder')
-  .version('1.0.0');
+  .version(VERSION);
 
 program
   .command('init')
@@ -20,8 +23,9 @@ program
   .action(async () => {
     try {
       await initCommand();
+      await checkForUpdateBackground(VERSION);
     } catch (err: any) {
-      console.error(chalk.red(`Error: ${err.message}`));
+      console.error(chalk.red(`Ошибка: ${err.message}`));
       process.exit(1);
     }
   });
@@ -33,8 +37,9 @@ program
   .action(async (opts) => {
     try {
       await pullCommand(opts.force);
+      await checkForUpdateBackground(VERSION);
     } catch (err: any) {
-      console.error(chalk.red(`Error: ${err.message}`));
+      console.error(chalk.red(`Ошибка: ${err.message}`));
       process.exit(1);
     }
   });
@@ -46,8 +51,9 @@ program
   .action(async (opts) => {
     try {
       await pushCommand(opts.force);
+      await checkForUpdateBackground(VERSION);
     } catch (err: any) {
-      console.error(chalk.red(`Error: ${err.message}`));
+      console.error(chalk.red(`Ошибка: ${err.message}`));
       process.exit(1);
     }
   });
@@ -58,8 +64,26 @@ program
   .action(async () => {
     try {
       await statusCommand();
+      await checkForUpdateBackground(VERSION);
     } catch (err: any) {
-      console.error(chalk.red(`Error: ${err.message}`));
+      console.error(chalk.red(`Ошибка: ${err.message}`));
+      process.exit(1);
+    }
+  });
+
+program
+  .command('update')
+  .description('Проверить обновления и обновить kisync')
+  .option('--apply', 'Скачать и установить обновление')
+  .action(async (opts) => {
+    try {
+      if (opts.apply) {
+        await updateApplyCommand(VERSION);
+      } else {
+        await updateCommand(VERSION);
+      }
+    } catch (err: any) {
+      console.error(chalk.red(`Ошибка: ${err.message}`));
       process.exit(1);
     }
   });