refactor: 从 CPA 换成 LiteLLM

oh-my-opencode.jsonc

@@ -1,91 +0,0 @@
-// bunx oh-my-opencode doctor --verbose
-{
-  "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",
-  "agents": {
-    // ref: https://github.com/code-yeongyu/oh-my-opencode/blob/dev/src/agents/AGENTS.md#agent-inventory
-    "sisyphus": {
-      "model": "cpa-openai/gpt-5.3-codex",
-      "variant": "high"
-    },
-    "hephaestus": {
-      "model": "cpa-openai/gpt-5.3-codex",
-      "variant": "high"
-    },
-    "oracle": {
-      "model": "cpa-openai/gpt-5.2",
-      "variant": "high"
-    },
-    "librarian": {
-      "model": "cpa-openai/gpt-5.2",
-      "variant": "low"
-    },
-    "explore": {
-      "model": "cpa-openai/gpt-5.1-codex-mini"
-    },
-    "multimodal-looker": {
-      "model": "cpa-openai/gpt-5.2",
-      "variant": "medium"
-    },
-    "prometheus": {
-      "model": "cpa-openai/gpt-5.2",
-      "variant": "high"
-    },
-    "metis": {
-      "model": "cpa-openai/gpt-5.2",
-      "variant": "high"
-    },
-    "momus": {
-      "model": "cpa-openai/gpt-5.2",
-      "variant": "medium"
-    },
-    "atlas": {
-      "model": "cpa-openai/gpt-5.2",
-      "variant": "medium"
-    }
-  },
-  "categories": {
-    // ref: https://github.com/code-yeongyu/oh-my-opencode/blob/dev/docs/reference/configuration.md#built-in-categories
-    "visual-engineering": {
-      "model": "cpa-openai/gpt-5.3-codex",
-      "variant": "medium",
-      "temperature": 0.5
-    },
-    "ultrabrain": {
-      "model": "cpa-openai/gpt-5.3-codex",
-      "variant": "xhigh"
-    },
-    "deep": {
-      "model": "cpa-openai/gpt-5.3-codex",
-      "variant": "medium"
-    },
-    "artistry": {
-      "model": "cpa-openai/gpt-5.3-codex",
-      "variant": "medium",
-      "temperature": 0.5
-    },
-    "quick": {
-      "model": "cpa-openai/gpt-5.1-codex-mini"
-    },
-    "unspecified-low": {
-      "model": "cpa-openai/gpt-5.3-codex",
-      "variant": "medium"
-    },
-    "unspecified-high": {
-      "model": "cpa-openai/gpt-5.3-codex",
-      "variant": "high"
-    },
-    "writing": {
-      "model": "cpa-openai/gpt-5.2",
-      "variant": "low"
-    }
-  },
-  "git_master": {
-    "commit_footer": false,
-    "include_co_authored_by": false
-  },
-  "experimental": {
-    "dynamic_context_pruning": {
-      "enabled": true
-    }
-  }
-}