chore: remove deprecated models from the catalog

[github-actions]

Model deprecation audit

Each model below returned a definitive not-found / deprecated response from its provider (a single 404 / not-found is treated as authoritative). Account/region-scoped providers (bedrock, vertex, databricks) are surfaced for manual review, not auto-removed.

{
  "deprecations": [
    {
      "model": "ibm-granite/granite-4.1-8b",
      "provider": "openrouter",
      "reason": "absent from provider model list"
    },
    {
      "model": "qwen/qwen3.8-max",
      "provider": "openrouter",
      "reason": "absent from provider model list"
    }
  ],
  "reportOnly": [
    {
      "provider": "bedrock",
      "modelCount": 138
    },
    {
      "provider": "databricks",
      "modelCount": 54
    },
    {
      "provider": "fireworks",
      "modelCount": 279
    },
    {
      "provider": "vertex",
      "modelCount": 113
    }
  ],
  "skipped": [
    {
      "provider": "lepton",
      "reason": "no adapter"
    },
    {
      "provider": "replicate",
      "reason": "no adapter"
    }
  ]
}

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Project	Deployment	Actions	Updated
ai-proxy	Ready	Preview	Sep 5, 2026 6:38am UTC