build: v0.4.55 release with Phase 3+4 features

Phase 3: message search, social drafting pipeline, budget alerts
Phase 4: actionable notifications, cross-platform build validation

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

build/electron-builder.runtime.json

@@ -1,9 +1,15 @@
 {
-  "extends": "C:\\Users\\zhang\\Documents\\GitHub\\AgentCompany\\electron-builder.yml",
+  "extends": "/Users/zacharyzhang/Documents/Github/AgentCompany/electron-builder.yml",
   "directories": {
-    "output": "C:\\Users\\zhang\\Documents\\GitHub\\AgentCompany\\build\\release"
+    "output": "/Users/zacharyzhang/Documents/Github/AgentCompany/build/release"
   },
   "extraMetadata": {
-    "version": "0.4.52"
+    "version": "0.4.55"
+  },
+  "mac": {
+    "hardenedRuntime": false,
+    "target": [
+      "zip"
+    ]
   }
 }