Download a screen's firmware and put it on from your own computer (0.2.68)

GitHub issue #8: Home Assistant on a server or virtual machine is out of
reach of the screen. New screen and Firmware & USB get a Download choice:
ESP Screens builds the profile's firmware as always and offers ESPHome's
factory image, which the owner flashes with ESPHome Web in Chrome or Edge.

- Firmware: a download job compiles without uploading; only the image of
  the profile's latest successful build in this process is served, a new
  job withdraws it, and a build without a factory image fails.
- USB on the Home Assistant machine stays first in both lists, also before
  a board is plugged in; Download and Later stay chosen once picked.
- The not-yet-in-Home-Assistant card knows a downloaded screen.
- The device name pattern is valid again under Chrome's v flag.
- Docs: README, DOCS, EASY_SETUP, DOCKER, TROUBLESHOOTING. App only;
  firmware stays 0.2.58.

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

README.md

@@ -105,7 +105,8 @@ The firmware and built-in CLI are tested with **ESPHome 2026.6.2**.
 
 **You don't need to install the separate ESPHome Device Builder app.**
 ESP Screen Manager already includes the ESPHome CLI and can build firmware itself,
-install it via USB, and later update it wirelessly over OTA.
+install it via USB or give you the file to put on the screen from your own computer,
+and later update it wirelessly over OTA.
 
 **You do need to pair the flashed screen via the ESPHome integration in HA.**
 That pairing lives under **Settings → Devices & services**, not in the
@@ -142,6 +143,10 @@ For Home Assistant OS with Apps/Add-ons on **aarch64 or amd64**:
    with unique API and OTA keys goes into the ESPHome folder; the build
    and flash run in the same window (a first build takes a few minutes on a
    Raspberry Pi). Each screen gets its own profile.
+   Is Home Assistant on a server or in a virtual machine, out of reach of the screen?
+   Choose **Download** under **Install via**: ESP Screens builds the firmware, and you put it
+   on the screen from your own computer with [ESPHome Web](https://web.esphome.io) in Chrome
+   or Edge. After that, updates go over Wi-Fi as usual.
 4. **CYD:** go through the calibration on the screen. **Guition:** uses GT911
    without resistive calibration. Then pair the discovered ESPHome device in
    **Settings → Devices & services** using the API key the window