v0.11.4 Profile-Isolated Usage Release

This patch release adds account-isolated usage checks for named authentication
profiles. Thanks to @insane66613 for the contribution in
PR #328.

Added

• nlm usage --profile <name> and nlm usage -p <name> inspect a saved
  profile without switching the configured default.
• usage_get(profile="<name>") provides the same per-call selection over MCP.

Fixed

• Explicit profiles take precedence over NOTEBOOKLM_COOKIES.
• Missing or invalid profiles return an error instead of falling back to another
  account.

Known limitation

• Google may not return usage windows for Enterprise/Workspace accounts on the
  “Pro” tier. nlm usage and usage_get therefore cannot show allowance data
  for those accounts, while personal Pro accounts can return the normal usage
  report.

Verification

• Full non-E2E suite: 1,609 passed, 38 skipped, 1 deselected.
• Ruff lint and formatting checks passed.