fix: Wave 1 — critical bug fixes across 9 files

- Fix double-prefix URL bugs in 4 analytics/revenue views (/api/api → /api)
- Fix AdminDashboard quick-links routing (/platform-admin/* → /admin/*)
- Fix MigrationView import missing Authorization header
- Remove dead ConsoleModule from app.module (conflicts with NatsBridgeGateway on /ws)
- Fix store.service.ts raw Error throws → NotFoundException/ForbiddenException
- Fix payment-order entity FK (webstore_subscription_id → WebstoreSubscription)

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

backend-nest/src/modules/store/store.service.ts

@@ -1,4 +1,4 @@
-import { Injectable } from '@nestjs/common';
+import { Injectable, NotFoundException, ForbiddenException } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { Repository } from 'typeorm';
 import { Module } from '../../entities/module.entity';
@@ -44,7 +44,7 @@ export class StoreService {
 
     const module = await this.moduleRepo.findOne({ where: { id: moduleId } });
     if (!module) {
-      throw new Error('Module not found');
+      throw new NotFoundException('Module not found');
     }
 
     const purchase = this.purchaseRepo.create({
@@ -64,7 +64,7 @@ export class StoreService {
     });
 
     if (!purchase) {
-      throw new Error('Module not purchased');
+      throw new ForbiddenException('Module not purchased');
     }
 
     // Stub - would create module_installation record