feat: Phase 4 v2.2.0 — browser/web content analysis (Layer 13)

Adds BrowserContentAnalyzer (Layer 13) covering DOM-level injection
surfaces invisible to text-only analysis: CSS-hidden content, URL safety
(javascript:/data: schemes, homoglyph domains), form manipulation, and
inline JS (eval, exfiltration, cookie theft, obfuscation).

- pyproject.toml: adds browser extra (beautifulsoup4>=4.12, lxml>=4.9)
- versions.py / __init__.py: bump to v2.2.0 (release 2026-05-03)
- tests/test_browser_content_analyzer.py: 108 tests across 9 classes
  including extract_categories(), HTML auto-detection, category
  propagation to context/scanner layers, and agentic HTML tool routing

Author: Oracles Technologies LLC

ethicore_guardian/__init__.py

@@ -7,7 +7,7 @@
 """
 
 # Version information
-__version__ = "2.1.0"
+__version__ = "2.2.0"
 __author__ = "Oracles Technologies LLC"
 
 # Core exports

ethicore_guardian/versions.py

@@ -2,12 +2,12 @@
 Ethicore Engine™ - Guardian SDK - Version Information
 """
 
-__version__ = "2.1.0"
+__version__ = "2.2.0"
 __version_info__ = tuple(map(int, __version__.split('.')))
 
 # Build information
 __build__ = "stable.1"
-__release_date__ = "2026-04-30"
+__release_date__ = "2026-05-03"
 
 # Feature flags
 FEATURES = {

pyproject.toml

@@ -119,6 +119,15 @@ video = [
     "ffmpeg-python>=0.2.0",
 ]
 
+# browser: enables Layer 13 (BrowserContentAnalyzer — DOM-level injection detection).
+# Covers CSS-hidden injection, URL injection, form injection, and inline JS analysis.
+# lxml is strongly recommended for parse speed; falls back to html.parser when absent.
+# Install: pip install "ethicore-engine-guardian[browser]"
+browser = [
+    "beautifulsoup4>=4.12.0",
+    "lxml>=4.9.0",
+]
+
 # ml: enables full transformer-based ML inference in MLInferenceEngine.
 # Without these packages the engine runs its built-in heuristic fallback,
 # which is still effective but less accurate than a fine-tuned classifier.
@@ -143,6 +152,8 @@ all = [
     "scipy>=1.7.0",
     "imagehash>=4.3.1",
     "opencv-python-headless>=4.8.0",
+    "beautifulsoup4>=4.12.0",
+    "lxml>=4.9.0",
 ]
 
 [project.urls]