chore: import upstream snapshot with attribution

bin/install-codexbar-cli.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+APP="/Applications/CodexBar.app"
+HELPER="$APP/Contents/Helpers/CodexBarCLI"
+TARGETS=("/usr/local/bin/codexbar" "/opt/homebrew/bin/codexbar")
+
+if [[ ! -x "$HELPER" ]]; then
+  echo "CodexBarCLI helper not found at $HELPER. Please reinstall CodexBar." >&2
+  exit 1
+fi
+
+osascript - "$HELPER" <<'APPLESCRIPT'
+on run argv
+  set helperPath to item 1 of argv
+  set installCommand to "set -euo pipefail" & linefeed & ¬
+    "HELPER=" & quoted form of helperPath & linefeed & ¬
+    "TARGETS=(\"/usr/local/bin/codexbar\" \"/opt/homebrew/bin/codexbar\")" & linefeed & ¬
+    "for t in \"${TARGETS[@]}\"; do" & linefeed & ¬
+    "  mkdir -p \"$(dirname \"$t\")\"" & linefeed & ¬
+    "  ln -sf \"$HELPER\" \"$t\"" & linefeed & ¬
+    "  echo \"Linked $t -> $HELPER\"" & linefeed & ¬
+    "done"
+
+  do shell script "bash -c " & quoted form of installCommand with administrator privileges
+end run
+APPLESCRIPT
+
+echo "CodexBar CLI installed. Try: codexbar usage"