fix(judge): forward the configured ensemble endpoint

[rudycelekli]

EnsembleJudgeEvaluator drops the public JudgeConfig.endpoint while constructing its members. A native B19 run sends both judges to the owned default server and fails despite a passing configured server. Forward the parent endpoint to each member. The no-endpoint default route remains covered.

Validation

• Current main 03514eb: 1 failed, 7 passed in baseline reproduction.
• Patch: 14 passed, using actual registered inspections, evaluation pipeline, native bridge/HTTP providers and scorecard generation against owned synthetic replies. No paid or external model calls.
• Whole-package Ruff 0.16.9, Bandit medium/high scan, layout, all eleven shipped examples and diff checks pass.
• Scoped advisory Mypy: three existing ensemble-stat errors; no type-check pass claimed.

Worked example

Actual synthetic native scorecard fields (plumbing verification, not a live model assessment):

[
  {
    "case": "test_public_ensemble_uses_conf0",
    "custom_endpoint": true,
    "calls": {
      "configured": {
        "sut": 60,
        "first": 30,
        "second": 30
      },
      "default": {}
    },
    "test_id": "B19",
    "score": 1.0,
    "status": "pass"
  },
  {
    "case": "test_public_ensemble_uses_conf1",
    "custom_endpoint": false,
    "calls": {
      "configured": {
        "sut": 60
      },
      "default": {
        "first": 30,
        "second": 30
      }
    },
    "test_id": "B19",
    "score": 1.0,
    "status": "pass"
  }
]

The public ensemble configuration has a shared endpoint; per-member endpoint overrides are not introduced. Three advisory ensemble-stat typing errors predate this change.

Prepared with AI assistance and reviewed before publication.

Exact-head CI

All three unchanged fork CI jobs (Python 3.10/3.11/3.12) passed at signed+DCO head 77ad1296a96fea10add7922fbd5d3a63a6d77b17: workflow evidence. These jobs run installation, lint, Bandit, layout and fixture validation; the native pytest results above were run locally. Upstream CI is action_required pending maintainer authorization; maintainer review remains separate.