webui: add tooltips for upper-right corner buttons

Fixes https://github.com/boldsoftware/sketch/issues/160

Co-Authored-By: sketch <hello@sketch.dev>
Change-ID: s7884db8812a87864k
diff --git a/webui/src/web-components/sketch-call-status.ts b/webui/src/web-components/sketch-call-status.ts
index 1af2302..d9e14b1 100644
--- a/webui/src/web-components/sketch-call-status.ts
+++ b/webui/src/web-components/sketch-call-status.ts
@@ -97,6 +97,11 @@
             : !this.isIdle
               ? "bg-orange-50 text-orange-600"
               : "bg-green-50 text-green-700"}"
+          title="${this.isDisconnected
+            ? "Connection lost or container shut down"
+            : !this.isIdle
+              ? "Agent is processing"
+              : "Agent is idle and ready for input"}"
         >
           ${statusText}
         </div>