feat: enhance iPhone photo inbox receiver with notification, reveal, and clipboard copy options

scripts/iphone-photo-inbox/README.md

@@ -30,6 +30,54 @@ IPHONE_PHOTO_OUTPUT_DIR="$HOME/Pictures/iPhone Inbox" \
 python3 scripts/iphone-photo-inbox/receiver.py
 ```
 
+Useful receive modes:
+
+```bash
+# Show a macOS notification when a photo arrives.
+IPHONE_PHOTO_NOTIFY=1 IPHONE_PHOTO_TOKEN="choose-a-token" python3 scripts/iphone-photo-inbox/receiver.py
+
+# Reveal each received photo in Finder.
+IPHONE_PHOTO_REVEAL=1 IPHONE_PHOTO_TOKEN="choose-a-token" python3 scripts/iphone-photo-inbox/receiver.py
+
+# Copy each received photo file to the Mac clipboard for pasting into apps.
+IPHONE_PHOTO_COPY=1 IPHONE_PHOTO_TOKEN="choose-a-token" python3 scripts/iphone-photo-inbox/receiver.py
+```
+
+These can be combined:
+
+```bash
+IPHONE_PHOTO_NOTIFY=1 \
+IPHONE_PHOTO_COPY=1 \
+IPHONE_PHOTO_OUTPUT_DIR="$HOME/Pictures/iPhone Inbox" \
+IPHONE_PHOTO_TOKEN="choose-a-token" \
+python3 scripts/iphone-photo-inbox/receiver.py
+```
+
+The flags also accept `true`, `yes`, or `on`:
+
+```bash
+IPHONE_PHOTO_NOTIFY=true IPHONE_PHOTO_COPY=true ...
+```
+
+When these modes are active, the receiver startup log should include:
+
+```text
+notifications enabled
+clipboard copy enabled
+```
+
+After each upload, it should also print:
+
+```text
+notification sent
+copied file to clipboard
+```
+
+If those startup lines do not appear, the environment variables were not passed
+to the running receiver process. If the startup lines appear but the post-upload
+lines do not, check the printed `macOS action failed:` error and macOS privacy
+permissions for Terminal/Codex automation and notifications.
+
 Find the Mac IP address on the current network:
 
 ```bash