chore: regenerate cordis/client service catalogs for openRouterUsage

The prior openrouter feature commit added the ctx.openRouterUsage Remote
service without a SERVICE_PAGE partition entry or regenerated artifacts, so
the committed api-catalog, slot-catalog, and llm-streaming subsystems docs
were stale and the catalog byte-for-byte gate failed. Map the service to its
documentation page, regenerate all three artifacts, and re-record the
bilingual sidecar.

docs/subsystems/llm-streaming.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/subsystems/llm-streaming.md
-llm-streaming.md: 7c0e0865f8dcc0e7722bb2205d0129d9e0ca3086
-llm-streaming.zh.md: 5c31909ee79137c6c5eef101235b43a2419b1339
+llm-streaming.md: 6adaf86016a6bcab757c86d47c10518f41539fe7
+llm-streaming.zh.md: 20349f426b4976904941b4069dfe51e988a8b142

docs/subsystems/llm-streaming.md

@@ -866,6 +866,22 @@ stream(options: GenerateOptions): AsyncIterable<StreamChunk>
 
 Source: [`packages/llm/llm/src/index.ts:284`](../../packages/llm/llm/src/index.ts)
 
+<a id="ctxopenrouterusage--openrouterusagegateway"></a>
+
+### `ctx.openRouterUsage` — `OpenRouterUsageGateway`
+
+OpenRouter usage + balance gateway (`ctx.openRouterUsage`).
+
+```ts cordis-catalog
+/**
+ * The latest known account snapshot.
+ * @returns a fresh copy of the cached balance.
+ */
+@Remote('snapshot') snapshot(): OpenRouterBalance
+```
+
+Source: [`packages/llm/openrouter-usage/src/index.ts:91`](../../packages/llm/openrouter-usage/src/index.ts)
+
 <a id="llm-events"></a>
 
 ### `llm/*` events

docs/subsystems/llm-streaming.zh.md

@@ -872,6 +872,22 @@ stream(options: GenerateOptions): AsyncIterable<StreamChunk>
 
 Source: [`packages/llm/llm/src/index.ts:284`](../../packages/llm/llm/src/index.ts)
 
+<a id="ctxopenrouterusage--openrouterusagegateway"></a>
+
+### `ctx.openRouterUsage` — `OpenRouterUsageGateway`
+
+OpenRouter usage + balance gateway (`ctx.openRouterUsage`).
+
+```ts cordis-catalog
+/**
+ * The latest known account snapshot.
+ * @returns a fresh copy of the cached balance.
+ */
+@Remote('snapshot') snapshot(): OpenRouterBalance
+```
+
+Source: [`packages/llm/openrouter-usage/src/index.ts:91`](../../packages/llm/openrouter-usage/src/index.ts)
+
 <a id="llm-events"></a>
 
 ### `llm/*` events