chore: Cleanup sandbox policy

sandbox/profiles/README.md

@@ -8,28 +8,10 @@ This directory contains built-in sandbox policies for PMG package managers.
 
 Restrictive policy for the npm ecosystem (npm, pnpm, yarn, bun).
 
-**Features:**
-- Allows read access to current directory, package manager configs, and caches
-- Restricts write access to `node_modules/` and lockfiles only
-- Blocks access to sensitive files (`~/.ssh`, `~/.aws`, `.env` files)
-- Allows network access to npm registries only
-- Permits Node.js and git execution, blocks shell and curl/wget
-
-**Use when:** You want balanced protection for npm package installations
-
 ### pypi-restrictive
 
 Restrictive policy for the PyPI ecosystem (pip, pip3, poetry, uv).
 
-**Features:**
-- Allows read access to current directory, pip configs, and caches
-- Restricts write access to virtual environments and package caches
-- Blocks access to sensitive files (`~/.ssh`, `~/.aws`, `.env` files)
-- Allows network access to PyPI registries only
-- Permits Python, compilers (for native extensions), and git
-
-**Use when:** You want balanced protection for pip package installations
-
 ## Custom Policies
 
 You can create custom sandbox policies by:
@@ -55,7 +37,6 @@ See the [Policy Schema Documentation](../policy.go) for details on the YAML stru
 
 - `${HOME}`: User home directory
 - `${CWD}`: Current working directory
-- `${PM_CACHE}`: Package manager cache directory
 - `${TMPDIR}`: Temporary directory
 
 ### Violation Modes