docs: split model source records and unify project instructions (#113)

* docs: split model sources and consolidate project instructions

* docs: normalize empty model navigation footer

docs/model-sources/providers/anthropic/SOURCES.md

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+# Anthropic：官网证据目录
+
+[供应商索引](README.md)
+
+核验日期：2026-10-03。这里只登记可复用的官网证据与适用边界，具体模型与接入面分别记录。
+
+## 官网证据
+
+### claude-models
+
+- 入口：[claude-models](https://platform.claude.com/docs/en/models/overview.md)
+- 类型：`official-doc`；当前读取状态：`fetched`；地域/接入面：`Anthropic 原厂 API 模型目录；订阅权限另核`。
+### claude-opus55
+
+- 入口：[claude-opus55](https://platform.claude.com/docs/en/models/opus-5-5/overview.md)
+- 类型：`official-doc`；当前读取状态：`fetched`；地域/接入面：`Anthropic 原厂 Opus 5.5；USD 标准价格`。
+### claude-sonnet55
+
+- 入口：[claude-sonnet55](https://platform.claude.com/docs/en/models/sonnet-5-5/overview.md)
+- 类型：`official-doc`；当前读取状态：`fetched`；地域/接入面：`Anthropic 原厂 Sonnet 5.5；USD 标准价格`。
+
+## 已知边界与核验说明
+
+Opus 5.5 和 Sonnet 5.5 的窗口、输出、默认 effort、强制工具选择限制已再次核对。订阅接入与直连价格分别记录；历史型号不据此声明已核实。
+
+状态 `partial` 仅表示列出的字段已核实；不能推断整条配置、价格、账号权限或真实模型调用都已验收。`pending` 没有已核字段；`historical` 只作历史兼容参考。路由 tier/priority、产品标签和默认选择属于本仓策略，不伪装成官网数据。
+
+<!-- source-metadata:start -->
+```json
+{
+  "formatVersion": 1,
+  "supplier": "anthropic",
+  "checkedAt": "2026-10-03",
+  "sources": [
+    {
+      "id": "claude-models",
+      "url": "https://platform.claude.com/docs/en/models/overview.md",
+      "kind": "official-doc",
+      "scope": "Anthropic 原厂 API 模型目录；订阅权限另核",
+      "retrieval": "fetched",
+      "checkedAt": "2026-10-03",
+      "contentSha256": "9d3c37c0d62e0d466d461fad29a3cba34e7ea54a1d313e2a2c025864acdfe7f3",
+      "resolvedUrl": "https://platform.claude.com/docs/en/models/overview.md"
+    },
+    {
+      "id": "claude-opus55",
+      "url": "https://platform.claude.com/docs/en/models/opus-5-5/overview.md",
+      "kind": "official-doc",
+      "scope": "Anthropic 原厂 Opus 5.5；USD 标准价格",
+      "retrieval": "fetched",
+      "checkedAt": "2026-10-03",
+      "contentSha256": "42d880d368fbe9784c80828b482dcfd5cdd96dcf79704e3da732b3eff198553d",
+      "resolvedUrl": "https://platform.claude.com/docs/en/models/opus-5-5/overview.md"
+    },
+    {
+      "id": "claude-sonnet55",
+      "url": "https://platform.claude.com/docs/en/models/sonnet-5-5/overview.md",
+      "kind": "official-doc",
+      "scope": "Anthropic 原厂 Sonnet 5.5；USD 标准价格",
+      "retrieval": "fetched",
+      "checkedAt": "2026-10-03",
+      "contentSha256": "0d7f0d48ddb9a796caf739e677f5cf882089ffd70dcb3fdb400432af43b83120",
+      "resolvedUrl": "https://platform.claude.com/docs/en/models/sonnet-5-5/overview.md"
+    }
+  ]
+}
+```
+<!-- source-metadata:end -->