logiguard fork: GPUI xdg-activation keyboard-focus serial fix

Single-commit orphan branch: full zed-industries/zed @ 8c74db0 source tree
with a 3-file patch applied (no upstream history).

Patch (crates/gpui_linux/src/linux/wayland/):
  - serial.rs: add SerialKind::KeyboardEnter
  - client.rs: store wl_keyboard.enter serial; add latest_serial_of()
  - window.rs: activate() uses keyboard-enter serial (Mutter focus gate)

Mutter honors window activation only when the token carries the keyboard-
focus serial from wl_keyboard.enter; GPUI used a stale mouse-press serial.
See docs/tray-window-focus-wayland.md in logiguard.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

script/lib/blob-store.sh

@@ -0,0 +1,32 @@
+function upload_to_blob_store_with_acl
+{
+    bucket_name="$1"
+    file_to_upload="$2"
+    blob_store_key="$3"
+    acl="$4"
+
+    date=$(date +"%a, %d %b %Y %T %z")
+    content_type="application/octet-stream"
+    storage_type="x-amz-storage-class:STANDARD"
+    string="PUT\n\n${content_type}\n${date}\n${acl}\n${storage_type}\n/${bucket_name}/${blob_store_key}"
+    signature=$(echo -en "${string}" | openssl sha1 -hmac "${DIGITALOCEAN_SPACES_SECRET_KEY}" -binary | base64)
+
+    curl --fail -vv -s -X PUT -T "$file_to_upload" \
+        -H "Host: ${bucket_name}.nyc3.digitaloceanspaces.com" \
+        -H "Date: $date" \
+        -H "Content-Type: $content_type" \
+        -H "$storage_type" \
+        -H "$acl" \
+        -H "Authorization: AWS ${DIGITALOCEAN_SPACES_ACCESS_KEY}:$signature" \
+        "https://${bucket_name}.nyc3.digitaloceanspaces.com/${blob_store_key}"
+}
+
+function upload_to_blob_store_public
+{
+    upload_to_blob_store_with_acl "$1" "$2" "$3" "x-amz-acl:public-read"
+}
+
+function upload_to_blob_store
+{
+    upload_to_blob_store_with_acl "$1" "$2" "$3" "x-amz-acl:private"
+}