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

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

docs/BLOCKSCOUT_YAML_FIX.md

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+# Fix YAML Quote Issues in docker-compose.yml
+
+## Problem
+Docker Compose is failing with "No closing quotation" error because the command string has nested quotes that aren't properly escaped.
+
+## Solution: Use YAML List Format
+
+Instead of:
+```yaml
+command: sh -c "bin/blockscout eval \"Explorer.Release.migrate()\" && bin/blockscout start"
+```
+
+Use YAML list format:
+```yaml
+command:
+  - sh
+  - -c
+  - "bin/blockscout eval \"Explorer.Release.migrate()\" && bin/blockscout start"
+```
+
+## Commands to Fix
+
+```bash
+cd /opt/blockscout
+
+# Backup
+cp docker-compose.yml docker-compose.yml.backup3
+
+# Fix using Python
+python3 << 'PYTHON'
+import re
+
+with open('docker-compose.yml', 'r') as f:
+    lines = f.readlines()
+
+new_lines = []
+i = 0
+while i < len(lines):
+    line = lines[i]
+    # Check if this is a command line with blockscout start
+    if 'command:' in line and ('blockscout start' in line or '/app/bin/blockscout start' in line):
+        # Replace with YAML list format
+        indent = len(line) - len(line.lstrip())
+        new_lines.append(' ' * indent + 'command:\n')
+        new_lines.append(' ' * (indent + 2) + '- sh\n')
+        new_lines.append(' ' * (indent + 2) + '- -c\n')
+        new_lines.append(' ' * (indent + 2) + '- "bin/blockscout eval \\"Explorer.Release.migrate()\\" && bin/blockscout start"\n')
+        i += 1
+        # Skip continuation lines if any
+        while i < len(lines) and (lines[i].strip().startswith('-') or lines[i].strip() == ''):
+            i += 1
+        continue
+    new_lines.append(line)
+    i += 1
+
+with open('docker-compose.yml', 'w') as f:
+    f.writelines(new_lines)
+
+print("✅ Updated docker-compose.yml")
+PYTHON
+
+# Verify
+grep -A 4 "command:" docker-compose.yml
+
+# Start
+docker-compose up -d blockscout
+```
+
+## Alternative: Manual Edit
+
+If Python doesn't work, edit manually:
+
+```bash
+cd /opt/blockscout
+nano docker-compose.yml
+```
+
+Find:
+```yaml
+    command: /app/bin/blockscout start
+```
+
+Replace with:
+```yaml
+    command:
+      - sh
+      - -c
+      - "bin/blockscout eval \"Explorer.Release.migrate()\" && bin/blockscout start"
+```
+
+Save and exit, then:
+```bash
+docker-compose up -d blockscout
+```
+