chore: update @mariozechner/pi-ai to version 0.50.3 and enhance OpenRouter documentation with provider routing details

docs/providers/openrouter.md

@@ -33,3 +33,43 @@ moltbot onboard --auth-choice apiKey --token-provider openrouter --token "$OPENR
 - Model refs are `openrouter/<provider>/<model>`.
 - For more model/provider options, see [/concepts/model-providers](/concepts/model-providers).
 - OpenRouter uses a Bearer token with your API key under the hood.
+
+## Provider routing
+
+OpenRouter supports provider routing via the `compat.openRouterRouting` field, which controls which upstream providers handle your requests. Configure this in `agents.defaults.models` for individual models.
+
+### Configuration options
+
+- `compat.openRouterRouting.only`: List of provider slugs to exclusively use for this request (e.g., `["anthropic", "openai"]`).
+- `compat.openRouterRouting.order`: List of provider slugs to try in sequence (e.g., `["anthropic", "openai"]`).
+
+### Example
+
+```json5
+{
+  env: { OPENROUTER_API_KEY: "sk-or-..." },
+  agents: {
+    defaults: {
+      model: { primary: "openrouter/anthropic/claude-sonnet-4-5" },
+      models: {
+        "openrouter/anthropic/claude-sonnet-4-5": {
+          alias: "Claude Sonnet",
+          compat: {
+            openRouterRouting: {
+              only: ["anthropic"]
+            }
+          }
+        },
+        "openrouter/openai/gpt-5.2": {
+          alias: "GPT-5.2",
+          compat: {
+            openRouterRouting: {
+              order: ["anthropic", "openai"]
+            }
+          }
+        }
+      }
+    }
+  }
+}
+```

package.json

@@ -164,7 +164,7 @@
     "@line/bot-sdk": "^10.6.0",
     "@lydell/node-pty": "1.2.0-beta.3",
     "@mariozechner/pi-agent-core": "0.49.3",
-    "@mariozechner/pi-ai": "0.49.3",
+    "@mariozechner/pi-ai": "0.50.3",
     "@mariozechner/pi-coding-agent": "0.49.3",
     "@mariozechner/pi-tui": "0.49.3",
     "@mozilla/readability": "^0.6.0",