Add full monorepo: virtual-banker, backend, frontend, docs, scripts, deployment

Co-authored-by: Cursor <cursoragent@cursor.com>

FIX_DATABASE_FIRST.md

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+# Fix Database Connection First
+
+## Current Issue
+
+The deployment script is failing because the database user or database doesn't exist.
+
+## Quick Fix
+
+Run this command to set up the database:
+
+```bash
+cd ~/projects/proxmox/explorer-monorepo
+sudo bash scripts/setup-database.sh
+```
+
+## What This Does
+
+1. Creates `explorer` user with password `L@ker$2010`
+2. Creates `explorer` database
+3. Grants all necessary privileges
+4. Tests the connection
+
+## Then Run Deployment
+
+After database setup, run:
+
+```bash
+bash EXECUTE_DEPLOYMENT.sh
+```
+
+## Alternative: Check What Exists
+
+```bash
+# Check if PostgreSQL is running
+systemctl status postgresql
+
+# Check if user exists
+sudo -u postgres psql -c "\du" | grep explorer
+
+# Check if database exists
+sudo -u postgres psql -c "\l" | grep explorer
+```
+
+## Manual Setup (if script doesn't work)
+
+```bash
+sudo -u postgres psql << EOF
+CREATE USER explorer WITH PASSWORD 'L@ker\$2010';
+CREATE DATABASE explorer OWNER explorer;
+GRANT ALL PRIVILEGES ON DATABASE explorer TO explorer;
+\q
+EOF
+
+# Test
+PGPASSWORD='L@ker$2010' psql -h localhost -U explorer -d explorer -c "SELECT 1;"
+```
+
+**Run `sudo bash scripts/setup-database.sh` first, then `bash EXECUTE_DEPLOYMENT.sh`**
+