v0.11.2 - Security release

Security release. Recommended for anyone who set up WSL login, and for anyone
who runs the MCP server with debug logging.

Security

• WSL CDP bridge is now scoped to the WSL virtual adapter. The netsh portproxy
  that bridges WSL to Windows Chrome listens on 0.0.0.0, so the Windows Firewall
  rule is the only boundary in front of Chrome DevTools Protocol, which has no
  authentication. The rule printed by nlm login --wsl and built by
  create_firewall_rule() now carries -InterfaceAlias "vEthernet (WSL)", so traffic
  arriving on Wi-Fi or Ethernet cannot match it. Interface scoping is what does the
  work here: the WSL adapter usually lands on the Public network profile, so
  profile filtering cannot separate it from a real network. -RemoteAddress LocalSubnet
  is kept as a second layer. The privilege-failure fallback command previously printed
  no -RemoteAddress at all, which defaults to Any; it is now scoped like the others.
  Thanks to @Naor-Peretz for the report (GHSA-v558-4774-r6wq).

  Existing WSL users must act. The firewall rule and the port proxy are created by
  you, in Windows, so upgrading cannot change them. See
  Removing the bridge to check whether your
  rule is scoped and to replace it if not.

• debug_page.html is now created private. The debug dump of the authenticated
  page was written with the process umask and narrowed with chmod afterwards, leaving
  a window in which it was world-readable, and the chmod failure was suppressed
  silently. It is now created 0o600 atomically with os.open, matching the pattern
  already used for credential writes in core/auth.py and utils/cdp.py.
  Thanks to @Naor-Peretz for the report (GHSA-747w-q55c-m74m).

• MCP debug logging now redacts responses, not only requests. Request parameters
  were sanitized while responses were serialized whole, with a 1000-character
  truncation as the only limit. Redaction is now recursive, covers nested dicts and
  lists in both requests and responses, and matches sensitive key names by substring
  (token, secret, password, credential, apikey, authorization, bearer
  and others) rather than an exact five-key denylist that failed open for anything
  added later. Thanks to @Naor-Peretz for the report (GHSA-jhrc-qgxv-3c2g).

Added

• SECURITY.md with a private reporting channel, response targets, and scope.
• .github/dependabot.yml for weekly Python and GitHub Actions updates.
• Regression tests: tests/test_log_redaction.py, tests/test_debug_page_permissions.py,
  tests/test_wsl_firewall_scope.py.

Changed

• docs/WSL_SETUP.md now documents the teardown commands for the firewall rule and the
  port proxy, states the exposure honestly instead of claiming external hosts cannot
  reach the port, and explains how to replace a pre-0.11.2 rule.
• The utils/wsl.py module docstring described the pre-0.5.24 architecture, in which
  Chrome bound --remote-debugging-address=0.0.0.0, and referenced
  docs/SECURITY_REMEDIATION_PLAN.md, which is not in the repository. Rewritten to
  describe the port proxy and its actual limits.