Ely Office: six offline-first desktop apps in Rust and GPUI

ElyDoc, ElyTable, ElyShow (LibreOfficeKit), ElyPDF (MuPDF), ElyTree (Git),
ElyMark (Milkdown and CodeMirror in CEF). ElyMail and ElyAgent follow.

tests/scripts/pdf-idle.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+# ElyPDF with no file starts no MuPDF worker (PERF-01).
+set -euo pipefail
+root=$(cd "$(dirname "$0")/../.." && pwd)
+(cd "$root" && cargo build -q -p ely-pdf -p ely-pdf-engine)
+ELY_NO_DIALOG=1 ELY_SMOKE=hold "$root/target/debug/ely-pdf" >/dev/null 2>&1 &
+app=$!
+trap 'kill $app 2>/dev/null || true' EXIT
+sleep 3
+kill -0 "$app" || { echo "FAIL: ElyPDF did not stay up"; exit 1; }
+if pgrep -P "$app" -f ely-pdf-worker >/dev/null; then
+  echo "FAIL: a worker runs with no file open"
+  exit 1
+fi
+echo "pdf-idle: no worker before the first file"