feat: Runtime configuration and Docker deployment improvements

Frontend:
- Add runtime configuration service for deployment-time API URL injection
- Create docker-entrypoint.sh to generate config.json from environment variables
- Update ApiService, ApprovalService, and DocumentViewer to use RuntimeConfigService
- Add APP_INITIALIZER to load runtime config before app starts

Backend:
- Fix init-blockchain.js to properly quote mnemonic phrases in .env file
- Improve docker-entrypoint.sh with health checks and better error handling

Docker:
- Add API_BASE_URL environment variable to frontend container
- Update docker-compose.yml with clear documentation for remote deployment
- Reorganize .env.example with clear categories (REQUIRED FOR REMOTE, PRODUCTION, AUTO-GENERATED)

Workflow fixes:
- Fix DepartmentApproval interface to match backend schema
- Fix stage transformation for 0-indexed stageOrder
- Fix workflow list to show correct stage count from definition.stages

Cleanup:
- Move development artifacts to .trash directory
- Remove root-level package.json (was only for utility scripts)
- Add .trash/ to .gitignore

backend/src/common/utils/crypto.util.ts

@@ -15,10 +15,7 @@ export async function generateApiKey(): Promise<{
   const apiKey = `goa_${crypto.randomBytes(16).toString('hex')}`;
   const apiSecret = crypto.randomBytes(32).toString('hex');
 
-  const [apiKeyHash, apiSecretHash] = await Promise.all([
-    hash(apiKey),
-    hash(apiSecret),
-  ]);
+  const [apiKeyHash, apiSecretHash] = await Promise.all([hash(apiKey), hash(apiSecret)]);
 
   return {
     apiKey,
@@ -40,10 +37,7 @@ export class CryptoUtil {
     const iv = randomBytes(CryptoUtil.IV_LENGTH);
 
     const cipher = createCipheriv(CryptoUtil.ALGORITHM, key, iv);
-    const encrypted = Buffer.concat([
-      cipher.update(data, 'utf8'),
-      cipher.final(),
-    ]);
+    const encrypted = Buffer.concat([cipher.update(data, 'utf8'), cipher.final()]);
 
     const authTag = cipher.getAuthTag();