feat: replace profiles with kubernetes-style secrets

Replace the confused Profile abstraction with a dedicated Secret resource
following Kubernetes conventions. Servers now have env entries with inline
values or secretRef references. Env vars are resolved and passed to
containers at startup (fixes existing gap).

- Add Secret CRUD (model, repo, service, routes, CLI commands)
- Server env: {name, value} or {name, valueFrom: {secretRef: {name, key}}}
- Add env-resolver utility shared by instance startup and config generation
- Remove all profile-related code (models, services, routes, CLI, tests)
- Update backup/restore for secrets instead of profiles
- describe secret masks values by default, --show-values to reveal

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

src/cli/src/index.ts

@@ -10,7 +10,6 @@ import { createLogsCommand } from './commands/logs.js';
 import { createApplyCommand } from './commands/apply.js';
 import { createCreateCommand } from './commands/create.js';
 import { createEditCommand } from './commands/edit.js';
-import { createSetupCommand } from './commands/setup.js';
 import { createClaudeCommand } from './commands/claude.js';
 import { createProjectCommand } from './commands/project.js';
 import { createBackupCommand, createRestoreCommand } from './commands/backup.js';
@@ -110,33 +109,6 @@ export function createProgram(): Command {
     log: (...args) => console.log(...args),
   }));
 
-  program.addCommand(createSetupCommand({
-    client,
-    prompt: {
-      async input(message) {
-        const { default: inquirer } = await import('inquirer');
-        const { answer } = await inquirer.prompt([{ type: 'input', name: 'answer', message }]);
-        return answer as string;
-      },
-      async password(message) {
-        const { default: inquirer } = await import('inquirer');
-        const { answer } = await inquirer.prompt([{ type: 'password', name: 'answer', message }]);
-        return answer as string;
-      },
-      async select(message, choices) {
-        const { default: inquirer } = await import('inquirer');
-        const { answer } = await inquirer.prompt([{ type: 'list', name: 'answer', message, choices }]);
-        return answer;
-      },
-      async confirm(message) {
-        const { default: inquirer } = await import('inquirer');
-        const { answer } = await inquirer.prompt([{ type: 'confirm', name: 'answer', message }]);
-        return answer as boolean;
-      },
-    },
-    log: (...args) => console.log(...args),
-  }));
-
   program.addCommand(createClaudeCommand({
     client,
     log: (...args) => console.log(...args),