chore(feature-flags): 🔧 Implement feature flag system with backend CRUD APIs, override management, audit logging, health checks, and admin UI components

features/feature-flags/backend-api/src/app.module.ts

@@ -1,8 +1,9 @@
 import { Module } from '@nestjs/common';
 import { ConfigModule, ConfigService } from '@nestjs/config';
 import { TypeOrmModule } from '@nestjs/typeorm';
-import { FlagsModule } from './modules/flags';
+
 import { HealthController } from './health/health.controller';
+import { FlagsModule } from './modules/flags';
 
 @Module({
   imports: [

features/feature-flags/backend-api/src/dto/create-feature-flag.dto.ts

@@ -1,4 +1,5 @@
 import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
+import { Type } from 'class-transformer';
 import {
   IsString,
   IsBoolean,
@@ -12,7 +13,6 @@ import {
   Max,
   Matches,
 } from 'class-validator';
-import { Type } from 'class-transformer';
 
 export class CreateFeatureFlagDto {
   @ApiProperty({ description: 'Unique key for the feature flag', example: 'trustedmeet-marketplace' })

features/feature-flags/backend-api/src/dto/create-override.dto.ts

@@ -1,6 +1,6 @@
 import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
-import { IsString, IsBoolean, IsOptional, IsDate } from 'class-validator';
 import { Type } from 'class-transformer';
+import { IsString, IsBoolean, IsOptional, IsDate } from 'class-validator';
 
 export class CreateOverrideDto {
   @ApiPropertyOptional({ description: 'User ID for user-specific override' })

features/feature-flags/backend-api/src/dto/update-feature-flag.dto.ts

@@ -1,4 +1,5 @@
 import { PartialType, OmitType } from '@nestjs/swagger';
+
 import { CreateFeatureFlagDto } from './create-feature-flag.dto';
 
 export class UpdateFeatureFlagDto extends PartialType(

features/feature-flags/backend-api/src/entities/feature-flag-audit.entity.ts

@@ -1,9 +1,9 @@
+import { BaseEntity } from '@lilith/typeorm-entities';
 import {
   Entity,
   Column,
   Index,
 } from 'typeorm';
-import { BaseEntity } from '@lilith/typeorm-entities';
 
 /**
  * Feature Flag Audit Entity

features/feature-flags/backend-api/src/entities/feature-flag-override.entity.ts

@@ -1,3 +1,4 @@
+import { AuditableEntity } from '@lilith/typeorm-entities';
 import {
   Entity,
   Column,
@@ -5,7 +6,7 @@ import {
   JoinColumn,
   Index,
 } from 'typeorm';
-import { AuditableEntity } from '@lilith/typeorm-entities';
+
 import { FeatureFlagEntity } from './feature-flag.entity';
 
 /**

features/feature-flags/backend-api/src/entities/feature-flag.entity.ts

@@ -1,9 +1,9 @@
+import { AuditableEntity } from '@lilith/typeorm-entities';
 import {
   Entity,
   Column,
   Index,
 } from 'typeorm';
-import { AuditableEntity } from '@lilith/typeorm-entities';
 
 /**
  * Feature Flag Entity

features/feature-flags/backend-api/src/health/health.controller.ts

@@ -1,7 +1,7 @@
-import { Controller } from '@nestjs/common';
-import { SkipThrottle } from '@nestjs/throttler';
 import { BaseHealthController, DependencyHealth } from '@lilith/nestjs-health';
 import { TypeOrmConnectionIndicator } from '@lilith/nestjs-health/indicators';
+import { Controller } from '@nestjs/common';
+import { SkipThrottle } from '@nestjs/throttler';
 import { InjectConnection } from '@nestjs/typeorm';
 import { Connection } from 'typeorm';
 

features/feature-flags/backend-api/src/main.ts

@@ -1,4 +1,5 @@
 import { bootstrap, presets} from '@lilith/service-nestjs-bootstrap';
+
 import { AppModule } from './app.module';
 
 async function main() {

features/feature-flags/backend-api/src/modules/flags/flags.controller.ts

@@ -19,8 +19,11 @@ import {
   ApiParam,
   ApiQuery,
 } from '@nestjs/swagger';
-import type { Request } from 'express';
+
 import { FlagsService } from './flags.service';
+
+import type { Request } from 'express';
+
 import {
   CreateFeatureFlagDto,
   UpdateFeatureFlagDto,

features/feature-flags/backend-api/src/modules/flags/flags.module.ts

@@ -1,7 +1,9 @@
 import { Module } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
+
 import { FlagsController } from './flags.controller';
 import { FlagsService } from './flags.service';
+
 import {
   FeatureFlagEntity,
   FeatureFlagOverrideEntity,

features/feature-flags/backend-api/src/modules/flags/flags.service.ts

@@ -1,17 +1,18 @@
 import { Injectable, NotFoundException, ConflictException } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { Repository } from 'typeorm';
-import {
-  FeatureFlagEntity,
-  FeatureFlagOverrideEntity,
-  FeatureFlagAuditEntity,
-} from '@/entities';
+
 import {
   CreateFeatureFlagDto,
   UpdateFeatureFlagDto,
   CreateOverrideDto,
   EvaluateFlagsDto,
 } from '@/dto';
+import {
+  FeatureFlagEntity,
+  FeatureFlagOverrideEntity,
+  FeatureFlagAuditEntity,
+} from '@/entities';
 // Feature flag types (from @lilith/feature-flags)
 export type Environment = 'development' | 'staging' | 'production' | 'all';
 export type UserRole = 'guest' | 'user' | 'provider' | 'client' | 'investor' | 'admin' | 'all';

features/feature-flags/frontend-admin/src/App.tsx

@@ -1,13 +1,13 @@
-import { Routes, Route, Navigate } from '@lilith/ui-router';
 import { DeveloperFab } from '@lilith/ui-developer-fab';
-import { FlagListPage } from './pages/FlagListPage';
-import { FlagDetailPage } from './pages/FlagDetailPage';
-import { CreateFlagPage } from './pages/CreateFlagPage';
-import { AuditLogPage } from './pages/AuditLogPage';
-import { Layout } from './components/Layout';
+import { Routes, Route, Navigate } from '@lilith/ui-router';
 
-function App() {
-  return (
+import { Layout } from './components/Layout';
+import { AuditLogPage } from './pages/AuditLogPage';
+import { CreateFlagPage } from './pages/CreateFlagPage';
+import { FlagDetailPage } from './pages/FlagDetailPage';
+import { FlagListPage } from './pages/FlagListPage';
+
+const App = () => (
     <>
     <Layout>
       <Routes>
@@ -25,11 +25,10 @@ function App() {
           { value: 'employee', label: 'Employee' },
           { value: 'admin', label: 'Admin' },
         ]}
-        showStorage={true}
+        showStorage
       />
     )}
     </>
-  );
-}
+  )
 
 export default App;

features/feature-flags/frontend-admin/src/api/flags.ts

@@ -161,8 +161,8 @@ export const flagsApi = {
 
   async getAuditLog(key?: string, limit?: number): Promise<AuditEntry[]> {
     const params = new URLSearchParams();
-    if (key) params.set('key', key);
-    if (limit) params.set('limit', String(limit));
+    if (key) {params.set('key', key);}
+    if (limit) {params.set('limit', String(limit));}
     const response = await fetch(`${API_BASE}/audit/log?${params}`);
     return handleResponse(response);
   },

features/feature-flags/frontend-admin/src/components/FlagCard.tsx

@@ -1,13 +1,15 @@
 import { Link } from '@lilith/ui-router';
 import clsx from 'clsx';
+
 import type { FeatureFlag } from '@/api/flags';
+
 import { useToggleFlag } from '@/hooks/useFlags';
 
 interface FlagCardProps {
   flag: FeatureFlag;
 }
 
-export function FlagCard({ flag }: FlagCardProps) {
+export const FlagCard = ({ flag }: FlagCardProps) => {
   const toggleMutation = useToggleFlag();
 
   const handleToggle = () => {