fix(server): address OpenCode recovery review findings (#904)

* fix(server): pin OpenCode SDK version

* fix(server): tolerate transient OpenCode recovery poll errors

* fix(server): address OpenCode recovery findings 2 and 4

* fix(server): address OpenCode recovery finding 1

* fix(server): address OpenCode recovery finding 3

packages/server/package.json

@@ -65,7 +65,7 @@
     "@mariozechner/pi-ai": "^0.70.2",
     "@mariozechner/pi-coding-agent": "^0.70.2",
     "@modelcontextprotocol/sdk": "^1.20.1",
-    "@opencode-ai/sdk": "^1.14.46",
+    "@opencode-ai/sdk": "1.14.46",
     "@sctg/sentencepiece-js": "^1.1.0",
     "@xterm/headless": "^6.0.0",
     "ai": "5.0.78",