Strip SCUSA batch mode, level system, technique tracking, and labeled wordlist support

Removes all code that only works with the proprietary SCUSA wordlist directory
structure: level-based discovery, attack category prefixes, technique detection
from payload position/content, labeled wordlist format, and the entire batch
execution path. Public release works standalone with any wordlist.

README.md

@@ -72,7 +72,6 @@ Pass with `-e configs/vars.env` or let it auto-discover `vars.env`.
 ```
 -w FILE        Wordlist (one payload per line)
 -p TEXT        Single payload
--l 1-4         Batch mode: run level 1-4 wordlist directory
 -c FILE        Config file
 -u URL         Target URL (CLI mode)
 -b BODY        Request body template
@@ -88,29 +87,9 @@ Pass with `-e configs/vars.env` or let it auto-discover `vars.env`.
 --debug        Show full request/response exchange
 ```
 
-## Batch Mode (Wordlist Levels)
+## Wordlist Organization
 
-Organize wordlists into level directories under `--wordlist-dir`:
+Any flat text file works as a wordlist (one payload per line, `#` for comments). You can organize them by category or test type manually — the fuzzer takes one wordlist at a time via `-w`.
-
-```
-wordlists/
-  level-1-essential/    # Quick baseline
-  level-2-standard/     # Broader coverage
-  level-3-advanced/     # Deep testing
-  level-4-comprehensive/ # Full coverage
-  labeled/              # Technique:payload format for exact tracking
-```
-
-```bash
-# Run all categories at level 1
-python fuzzer.py -l 1 -c config.yml -o results.log
-
-# Specific categories only
-python fuzzer.py -l 1 --categories 07 08 -c config.yml
-
-# Level 2, route through Burp
-python fuzzer.py -l 2 -c config.yml --proxy http://127.0.0.1:8080
-```
 
 ## Authentication