feat(invariants): add package-owned service seam

website/.vitepress/config/api-sidebar.json

@@ -54,6 +54,10 @@
       "text": "ctx.fs",
       "link": "/zh-CN/api/harness/fs"
     },
+    {
+      "text": "ctx.invariants",
+      "link": "/zh-CN/api/harness/invariants"
+    },
     {
       "text": "ctx.llm",
       "link": "/zh-CN/api/harness/llm"

website/zh-CN/api/harness/invariants.md

@@ -0,0 +1,32 @@
+<!-- Generated by scripts/gen-website-api.ts — do not edit by hand. Run `pnpm run gen-website-api` to regenerate. -->
+
+# ctx.invariants
+
+`InvariantService` — provided by `@deepseek-ai/dsh-invariants`.
+
+Package-owned invariant registry with global and regex-based selection.
+
+[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/support/invariants/src/index.ts#L94)
+
+### ctx.invariants.register(packageName, installer)
+
+```ts website-api
+/**
+ * Register one package's invariant installer. The package name is reserved
+ * even when filtering disables its checks. Enabled installers run in a child
+ * fiber; failure disposes that fiber and releases the reservation.
+ * @param packageName - full npm package name that owns the contribution.
+ * @param installer - synchronous listener installer for the child context.
+ * @returns an effect-scoped disposer for the registration.
+ */
+register(packageName: string, installer: InvariantInstaller): () => void
+```
+
+Register one package's invariant installer. The package name is reserved even when filtering disables its checks. Enabled installers run in a child fiber; failure disposes that fiber and releases the reservation.
+
+- `packageName` — full npm package name that owns the contribution.
+- `installer` — synchronous listener installer for the child context.
+
+**Returns** an effect-scoped disposer for the registration.
+
+[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/support/invariants/src/index.ts#L136)