move pi-mono into companion-cloud as apps/companion-os

- Copy all pi-mono source into apps/companion-os/
- Update Dockerfile to COPY pre-built binary instead of downloading from GitHub Releases
- Update deploy-staging.yml to build pi from source (bun compile) before Docker build
- Add apps/companion-os/** to path triggers
- No more cross-repo dispatch needed

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/ai/src/utils/json-parse.ts

@@ -0,0 +1,30 @@
+import { parse as partialParse } from "partial-json";
+
+/**
+ * Attempts to parse potentially incomplete JSON during streaming.
+ * Always returns a valid object, even if the JSON is incomplete.
+ *
+ * @param partialJson The partial JSON string from streaming
+ * @returns Parsed object or empty object if parsing fails
+ */
+export function parseStreamingJson<T = any>(
+  partialJson: string | undefined,
+): T {
+  if (!partialJson || partialJson.trim() === "") {
+    return {} as T;
+  }
+
+  // Try standard parsing first (fastest for complete JSON)
+  try {
+    return JSON.parse(partialJson) as T;
+  } catch {
+    // Try partial-json for incomplete JSON
+    try {
+      const result = partialParse(partialJson);
+      return (result ?? {}) as T;
+    } catch {
+      // If all parsing fails, return empty object
+      return {} as T;
+    }
+  }
+}