jmri: move udev symlinks to /dev/jmri-* (flat, JMRI-enumerable)

/dev/jmri/ subdirectory is invisible to JMRI's device scanner.
Symlinks must live directly in /dev to appear in the port dropdown.

ansible/roles/jmri/tasks/main.yml

@@ -47,12 +47,6 @@
 # Phase 1 — Stable USB device symlinks
 # Creates /dev/jmri/loconet and /dev/jmri/nce via udev ID_SERIAL matching.
 # ---------------------------------------------------------------------------
-- name: Create /dev/jmri directory (udev will populate it)
-  ansible.builtin.file:
-    path: /dev/jmri
-    state: directory
-    mode: '0755'
-
 - name: Deploy udev rules for JMRI USB devices
   ansible.builtin.template:
     src: 99-jmri-devices.rules.j2

ansible/roles/jmri/templates/99-jmri-devices.rules.j2

@@ -1,10 +1,11 @@
 # JMRI USB device symlinks — managed by Ansible, do not edit manually.
-# Creates stable /dev/jmri/* symlinks regardless of USB enumeration order.
+# Creates stable /dev/jmri-* symlinks at the top level of /dev so JMRI
+# can enumerate them alongside real tty devices.
 
 # LocoNet interface — RR-CirKits LocoBuffer-NG (Microchip CDC)
 SUBSYSTEM=="tty", ENV{ID_SERIAL}=="RR-CirKits_LocoBuffer-NG_CDC_ACM_SERIAL_DEVICE_AA5700218A", \
-    SYMLINK+="jmri/loconet", MODE="0666"
+    SYMLINK+="jmri-loconet", MODE="0666"
 
 # NCE Power Pro command station (FTDI FT232)
 SUBSYSTEM=="tty", ENV{ID_SERIAL}=="ftdi_usb_serial_converter_ftDYQHZX", \
-    SYMLINK+="jmri/nce", MODE="0666"
+    SYMLINK+="jmri-nce", MODE="0666"