Add global SSH key configuration in system settings (#2840)

* Initial plan

* Add backend support for global SSH keys

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

* Add frontend UI for global SSH keys management

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

* Add SshKeyModel to database initialization

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

* Add SSH config generation for global SSH keys

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

* Add internationalization support for SSH key management UI

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

* Simplify to single global SSH key in system settings

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

back/services/sshKey.ts

@@ -131,4 +131,32 @@ export default class SshKeyService {
       }
     }
   }
+
+  public async addGlobalSSHKey(key: string, alias: string): Promise<void> {
+    await this.generatePrivateKeyFile(`global_${alias}`, key);
+    // Create a global SSH config entry that matches all hosts
+    // This allows the key to be used for any Git repository
+    await this.generateGlobalSshConfig(`global_${alias}`);
+  }
+
+  public async removeGlobalSSHKey(alias: string): Promise<void> {
+    await this.removePrivateKeyFile(`global_${alias}`);
+    await this.removeSshConfig(`global_${alias}`);
+  }
+
+  private async generateGlobalSshConfig(alias: string) {
+    // Create a config that matches all hosts, making this key globally available
+    const config = `Host *\n    IdentityFile ${path.join(
+      this.sshPath,
+      alias,
+    )}\n    StrictHostKeyChecking no\n`;
+    await writeFileWithLock(
+      `${path.join(this.sshPath, `${alias}.config`)}`,
+      config,
+      {
+        encoding: 'utf8',
+        mode: '600',
+      },
+    );
+  }
 }

back/services/system.ts

@@ -530,6 +530,27 @@ export default class SystemService {
     }
   }
 
+  public async updateGlobalSshKey(info: SystemModelInfo) {
+    const oDoc = await this.getSystemConfig();
+    const result = await this.updateAuthDb({
+      ...oDoc,
+      info: { ...oDoc.info, ...info },
+    });
+    
+    // Apply the global SSH key
+    const SshKeyService = require('./sshKey').default;
+    const Container = require('typedi').Container;
+    const sshKeyService = Container.get(SshKeyService);
+    
+    if (info.globalSshKey) {
+      await sshKeyService.addGlobalSSHKey(info.globalSshKey, 'global');
+    } else {
+      await sshKeyService.removeGlobalSSHKey('global');
+    }
+    
+    return { code: 200, data: result };
+  }
+
   public async cleanDependence(type: 'node' | 'python3') {
     if (!type || !['node', 'python3'].includes(type)) {
       return { code: 400, message: '参数错误' };