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/volcengine/models/doubao-seed-code.md

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+# doubao-seed-code：模型来源与接入记录
+
+[供应商索引](../README.md) · [官网证据目录](../SOURCES.md)
+
+- 精确模型 ID：`doubao-seed-code`。
+- 核验日期：2026-10-03；本次只迁移记录，没有重新核验或提高状态。
+
+## 适用接入面
+
+- [compute/providers/volcengine.json](../access/providers--volcengine.md)
+- [compute/coding-plans/volcengine-coding.json](../access/coding-plans--volcengine-coding.md)
+- [compute/model-specs/volcengine.json](../access/model-specs--volcengine.md)
+
+## 字段级来源记录
+
+各接入面分开记录；价格为 inputPrice/outputPrice 快照，具体单位和限制看配置及引用官网。partial 只确认已列字段，不代表全部参数、平台可用性或账号调用已验收。
+
+### compute/providers/volcengine.json
+
+[查看配置](../../../../../compute/providers/volcengine.json) · [接入面说明](../access/providers--volcengine.md)
+
+当前配置详情（不是全部官网确认值；routing 是本仓策略）：
+
+<!-- source-details: {"config":"compute/providers/volcengine.json","id":"doubao-seed-code"} -->
+```json
+{
+  "contextWindow": 256000,
+  "maxOutputTokens": 32768,
+  "serviceType": [
+    "chat"
+  ],
+  "capabilities": [
+    "code",
+    "reasoning",
+    "long_context",
+    "deep_thinking"
+  ],
+  "defaultTemperature": 1,
+  "defaultTopP": 0.7,
+  "inputPrice": 1.2,
+  "outputPrice": 8
+}
+```
+<!-- source-details:end -->
+
+<!-- source-config: compute/providers/volcengine.json -->
+
+| 模型 ID | 上下文 / 输出 | 计价 | 已核字段→来源 | 来源入口 | 状态 | 数据指纹 |
+| --- | --- | --- | --- | --- | --- | --- |
+| `doubao-seed-code` | 256000 / 32768 | CNY：1.2 / 8 | 待核实 | [volcengine-models](../SOURCES.md#volcengine-models) | pending | `1161bbe3aa651bc85ebca7ce073be1428017b9ce36786d7595d6ca9f63a3a51c` |
+
+### compute/coding-plans/volcengine-coding.json
+
+[查看配置](../../../../../compute/coding-plans/volcengine-coding.json) · [接入面说明](../access/coding-plans--volcengine-coding.md)
+
+当前配置详情（不是全部官网确认值；routing 是本仓策略）：
+
+<!-- source-details: {"config":"compute/coding-plans/volcengine-coding.json","id":"doubao-seed-code"} -->
+```json
+{
+  "serviceType": [
+    "chat"
+  ],
+  "capabilities": [
+    "code",
+    "reasoning",
+    "chat",
+    "long_context"
+  ]
+}
+```
+<!-- source-details:end -->
+
+<!-- source-config: compute/coding-plans/volcengine-coding.json -->
+
+| 模型 ID | 上下文 / 输出 | 计价 | 已核字段→来源 | 来源入口 | 状态 | 数据指纹 |
+| --- | --- | --- | --- | --- | --- | --- |
+| `doubao-seed-code` | 未声明 / 未声明 | 套餐：未声明 / 未声明 | 待核实 | [volcengine-models](../SOURCES.md#volcengine-models) | pending | `d58ab6521d8eba0de4e7bce40bcc49ce5efcdd4a47a47ef06dbf44d12c2c7a94` |
+
+### compute/model-specs/volcengine.json
+
+[查看配置](../../../../../compute/model-specs/volcengine.json) · [接入面说明](../access/model-specs--volcengine.md)
+
+当前配置详情（不是全部官网确认值；routing 是本仓策略）：
+
+<!-- source-details: {"config":"compute/model-specs/volcengine.json","id":"doubao-seed-code"} -->
+```json
+{
+  "spec.contextWindow": 256000,
+  "spec.maxOutputTokens": 32768,
+  "spec.serviceType": [
+    "chat"
+  ],
+  "spec.capabilities": [
+    "code",
+    "reasoning",
+    "long_context",
+    "deep_thinking"
+  ],
+  "spec.defaultTemperature": 1
+}
+```
+<!-- source-details:end -->
+
+<!-- source-config: compute/model-specs/volcengine.json -->
+
+| 模型 ID | 上下文 / 输出 | 计价 | 已核字段→来源 | 来源入口 | 状态 | 数据指纹 |
+| --- | --- | --- | --- | --- | --- | --- |
+| `doubao-seed-code` | 256000 / 32768 | 非计价主数据 | 待核实 | [volcengine-models](../SOURCES.md#volcengine-models) | pending | `95363d19b782dd3cda5c27c1e41bc74f289e120f7a734a1d9eba269c8a72ea28` |
+
+## 下次更新核查
+
+- 对照官网核查精确 ID／别名、是否仍列出、上下文／输入／输出限制及单位。
+- 分别核查推理档位、默认值、是否可关闭思考、采样和强制工具选择限制、多模态输入／输出。
+- 按本接入面核对价格、缓存、阶梯／峰谷、套餐支持；不能把其他平台参数直接复制。
+- 只更新真正复核的字段与引用来源；保留其余待核实项及历史记录。
+- 同步对应 canonical JSON、回归和模型指纹，再运行来源校验。
+
+<!-- source-metadata:start -->
+```json
+{
+  "formatVersion": 1,
+  "supplier": "volcengine",
+  "checkedAt": "2026-10-03",
+  "sourceCatalog": "../SOURCES.md"
+}
+```
+<!-- source-metadata:end -->