docs: update CHANGELOG.md and README.md with merged branch features

CHANGELOG.md

@@ -6,6 +6,10 @@
 - Replaced marker-file authorization with two-turn skill preparation and receipt diagnostics; legacy markers can only infer a unique session ID during migration.
 - Allowed direct host-local `init-engagement --host` bootstrapping, persisted runtime session identity before skill delivery, and blocked shell-indirection workarounds.
 - Scoped skill cooldowns to Hermes model API requests so the next tool-loop continuation unlocks automatically, while batch review no longer replaces the active execution-skill binding.
+- Migrated guard tool schemas and parameter validation to Pydantic v2.
+- Replaced platform-specific process termination with cross-platform `psutil` process tree traversal and cleanup.
+- Upgraded target IP/CIDR scope policy arithmetic to `netaddr.IPSet` and RFC 3986 URL parsing to `yarl`.
+- Replaced shell regexes in terminal policy with `bashlex` AST tokenization and command parsing.
 
 ## 2.0.8
 

README.md

@@ -218,7 +218,10 @@ violin/
 ├── config.yaml             # Profile config (toolsets, safety, memory)
 ├── distribution.yaml       # Hermes distribution manifest
 ├── plugins/violin_guard/   # Required Hermes guard plugin and execution boundary
-│   ├── terminal_policy.py  # Best-effort blocks for clearly target-touching raw terminal calls
+│   ├── bash_ast.py         # bashlex AST command tokenization and parsing
+│   ├── terminal_policy.py  # AST-based best-effort blocks for target-touching raw terminal calls
+│   ├── targets.py          # Scope enforcement using netaddr and yarl URL parsing
+│   ├── schemas.py          # Pydantic v2 tool schemas and validation
 │   └── code_execution_audit.py # Engagement audit contract for execute_code
 ├── scripts/                # CLI and release smoke helpers
 │   ├── violin_guard.py     # Diagnostic/admin CLI over the plugin modules