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": "claude-mythos-5-1",
      "provider": "anthropic",
      "reason": "absent from list + probe not-found",
      "status": 404,
      "detail": "{\"type\":\"error\",\"error\":{\"type\":\"not_found_error\",\"message\":\"model: claude-mythos-5-1\"},\"request_id\":\"req_011CesQhHESzrBw5uUzR8wSC\"}"
    },
    {
      "model": "gpt-daybreak-blue-latest",
      "provider": "azure",
      "reason": "absent from list + probe not-found",
      "status": 404,
      "detail": "{\n    \"error\": {\n        \"message\": \"The model `gpt-daybreak-blue-latest` does not exist or you do not have access to it.\",\n        \"type\": \"invalid_request_err"
    },
    {
      "model": "gpt-daybreak-red-latest",
      "provider": "azure",
      "reason": "absent from list + probe not-found",
      "status": 404,
      "detail": "{\n    \"error\": {\n        \"message\": \"The model `gpt-daybreak-red-latest` does not exist or you do not have access to it.\",\n        \"type\": \"invalid_request_erro"
    },
    {
      "model": "gpt-daybreak-blue-latest",
      "provider": "openai",
      "reason": "absent from list + probe not-found",
      "status": 404,
      "detail": "{\n    \"error\": {\n        \"message\": \"The model `gpt-daybreak-blue-latest` does not exist or you do not have access to it.\",\n        \"type\": \"invalid_request_err"
    },
    {
      "model": "gpt-daybreak-red-latest",
      "provider": "openai",
      "reason": "absent from list + probe not-found",
      "status": 404,
      "detail": "{\n    \"error\": {\n        \"message\": \"The model `gpt-daybreak-red-latest` does not exist or you do not have access to it.\",\n        \"type\": \"invalid_request_erro"
    },
    {
      "model": "ibm-granite/granite-4.1-8b",
      "provider": "openrouter",
      "reason": "absent from provider model list"
    },
    {
      "model": "inception/mercury-2.5-preview",
      "provider": "openrouter",
      "reason": "absent from provider model list"
    },
    {
      "model": "nex-agi/nex-n2-mini",
      "provider": "openrouter",
      "reason": "absent from provider model list"
    },
    {
      "model": "nex-agi/nex-n2-pro",
      "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": 140
    },
    {
      "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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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Preserve the canonical alias while Bedrock fallbacks remain

When callers use claude-mythos-5-1 with a Bedrock credential, blacklisting this ID and deleting its catalog entry also removes the fallback_models links to the still-cataloged anthropic.claude-mythos-5-1 and global.anthropic.claude-mythos-5-1 Bedrock variants. getModelEndpointTypes derives equivalent-provider routing from those links, so the canonical ID now resolves to no endpoint even though the audit established only that its Anthropic route returned 404. Preserve the canonical entry and its equivalence links while removing the dead Anthropic route instead.

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