Loki Mode v7.59.2

Fix: release gate broken by test-isolation pollution (v7.59.0/.1 stranded)

• tests/dashboard/test_control_app_auth.py (added in v7.59.0) called
  importlib.reload(dashboard.auth), which rebinds auth.get_current_token to a
  new function object. FastAPI dependency_overrides are keyed by callable
  identity, so after the reload all 20 tenant-isolation tests overrode a stale
  callable and hit real auth (401) instead of the tenant check (403), failing
  the full-suite Release gate (v7.59.0 and v7.59.1 tags stranded; npm stuck at
  7.58.1). Fixed by running the enterprise-auth assertions in subprocesses so
  the parent interpreter never reloads dashboard modules. Full pytest tree now
  1167 passed, 0 failed (verified locally, the exact release-gate command).