Refactor to generic ERP base

Remove influencer-specific features (campaigns, TikTok, gifts, shadow ledger,
contracts, briefings) and consolidate into a clean ERP foundation with core
bookkeeping, invoicing, receipts, tax reporting, and calendar functionality.
Reorganize database migrations into a clean numbered sequence.

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

app/api/push/cron/route.ts

@@ -3,7 +3,6 @@ import { NextResponse } from 'next/server'
 import {
   sendTaxDeadlineNotifications,
   sendInvoiceNotifications,
-  sendCampaignNotifications,
 } from '@/lib/push/notification-scheduler'
 
 /**
@@ -37,16 +36,13 @@ export async function GET(request: Request) {
 
   try {
     // Send all notification types in parallel
-    const [taxResult, invoiceResult, campaignResult] = await Promise.all([
+    const [taxResult, invoiceResult] = await Promise.all([
       sendTaxDeadlineNotifications(supabase),
       sendInvoiceNotifications(supabase),
-      sendCampaignNotifications(supabase),
     ])
 
-    const totalSent =
-      taxResult.sent + invoiceResult.sent + campaignResult.sent
-    const totalSkipped =
-      taxResult.skipped + invoiceResult.skipped + campaignResult.skipped
+    const totalSent = taxResult.sent + invoiceResult.sent
+    const totalSkipped = taxResult.skipped + invoiceResult.skipped
 
     console.log(
       `Push notification cron completed: ${totalSent} sent, ${totalSkipped} skipped`
@@ -57,9 +53,6 @@ export async function GET(request: Request) {
     console.log(
       `  Invoice: ${invoiceResult.sent} sent, ${invoiceResult.skipped} skipped`
     )
-    console.log(
-      `  Campaign: ${campaignResult.sent} sent, ${campaignResult.skipped} skipped`
-    )
 
     return NextResponse.json({
       success: true,
@@ -68,7 +61,6 @@ export async function GET(request: Request) {
       details: {
         taxDeadlines: taxResult,
         invoices: invoiceResult,
-        campaigns: campaignResult,
       },
     })
   } catch (error) {

app/api/push/subscribe/route.ts

@@ -81,7 +81,6 @@ export async function POST(request: Request) {
         user_id: user.id,
         tax_deadlines_enabled: true,
         invoice_reminders_enabled: true,
-        campaign_deadlines_enabled: true,
         push_enabled: true,
         email_enabled: true,
         quiet_start: '21:00',