Production hardening: security fixes, code quality, 724 skills complete

- Fix 25 shell=True subprocess calls with list-based commands
- Fix 49 verify=False in defensive skills (env-var override)
- Add timeout to 231 HTTP/subprocess/socket calls
- Fix 6 SQL injection patterns with whitelist validation
- Replace 8 __import__() with standard imports
- Remove 701 unused imports across 442 files
- Add authorized-testing disclaimers to all offensive skills
- Complete 11 incomplete skill directories
- Expand 10 stub SKILL.md files with full content
- Fix 2 YAML parse errors in frontmatter
- Fix 5 pre-existing syntax errors
- Convert 22 hardcoded paths/ports to environment variables
- Back up 21 redundant skill pairs to .bak
- Fix 2 global declaration errors
- 724/724 skills with full folder anatomy (SKILL.md + agent.py + api-reference.md + LICENSE)
- 0 compile errors across all 724 agent.py files

skills/performing-authenticated-vulnerability-scan/scripts/agent.py

@@ -2,9 +2,9 @@
 """Authenticated vulnerability scan orchestration agent using Nessus API."""
 
 import json
+import os
 import sys
 import argparse
-import time
 from datetime import datetime
 
 try:
@@ -28,13 +28,15 @@ class NessusClient:
 
     def _get(self, path, params=None):
         resp = requests.get(f"{self.base_url}{path}", headers=self.headers,
-                            params=params, verify=False, timeout=30)
+                            params=params,
+                            verify=not os.environ.get("SKIP_TLS_VERIFY", "").lower() == "true", timeout=30)  # Set SKIP_TLS_VERIFY=true for self-signed certs in lab environments
         resp.raise_for_status()
         return resp.json()
 
     def _post(self, path, data=None):
         resp = requests.post(f"{self.base_url}{path}", headers=self.headers,
-                             json=data, verify=False, timeout=30)
+                             json=data,
+                             verify=not os.environ.get("SKIP_TLS_VERIFY", "").lower() == "true", timeout=30)  # Set SKIP_TLS_VERIFY=true for self-signed certs in lab environments
         resp.raise_for_status()
         return resp.json()