Always show drive picker on Linux, conditional yellow explanation

Drive picker now shows on every Linux install regardless of transport mix.
Users can exclude any drive (USB backup, test drives, etc.) not just iSCSI.
Yellow transport explanation only appears when yellow drives are present.
Updated README exclude_devices docs to reflect always-show behavior.

Author: DAB-LABS

README.md

@@ -166,7 +166,7 @@ filesystems:                   # optional -- set by installer's disk usage picke
 
 All options can also be set via CLI flags: `--port`, `--token`, `--scan-interval`, `--interface`, `--config`.
 
-**Exclude devices:** Device paths listed in `exclude_devices` are skipped during every scan. The agent resolves symlinks at startup, so `/dev/disk/by-id/...` paths and their `/dev/sdX` equivalents both match. The installer's drive picker sets this automatically when it detects iSCSI, Fibre Channel, or other remote-storage transports that don't support SMART passthrough. You can also add paths manually and restart the service. If a device appears in both `exclude_devices` and `device_overrides`, the exclusion wins and a warning is logged.
+**Exclude devices:** Device paths listed in `exclude_devices` are skipped during every scan. The agent resolves symlinks at startup, so `/dev/disk/by-id/...` paths and their `/dev/sdX` equivalents both match. The installer's drive picker (Linux) shows all detected drives and lets you choose which ones to monitor -- useful for excluding iSCSI LUNs, USB backup drives, or anything you don't want polled. Drives with remote-storage transports (iSCSI, Fibre Channel) are flagged in yellow and excluded from the default selection. You can also add paths manually and restart the service. If a device appears in both `exclude_devices` and `device_overrides`, the exclusion wins and a warning is logged.
 
 **Scan interval:** Uses Go duration syntax -- `30s`, `5m`, `1h`, `24h` are all valid. When `standby_mode` is set, the agent skips sleeping drives and serves cached data, so the interval does not cause unnecessary wake-ups. When `standby_mode` is `never` (the default), each poll wakes any drive that is spun down. This is the *agent-side* read cadence and is separate from the HA Poll Interval entity, which reflects how often Home Assistant pulls fresh data from the agent itself.
 

install.sh

@@ -687,19 +687,6 @@ pick_drives() {
 
   default_nums=$(IFS=','; echo "${default_selected[*]}")
 
-  # If all drives are green (no yellow), skip the picker entirely.
-  local has_yellow="false"
-  for i in "${!dev_paths[@]}"; do
-    if [ "${is_yellow[$i]}" = "1" ]; then
-      has_yellow="true"
-      break
-    fi
-  done
-
-  if [ "$has_yellow" = "false" ]; then
-    return
-  fi
-
   # Display the picker.
   echo ""
   echo -e "  ${BOLD}Drive Scanner${NC}"
@@ -725,9 +712,19 @@ pick_drives() {
   done
 
   echo ""
-  echo "  Yellow drives use network storage or unknown transport and may not"
-  echo "  support SMART. They are excluded from the default selection."
-  echo ""
+  # Only show yellow explanation if there are yellow drives.
+  local has_yellow="false"
+  for i in "${!dev_paths[@]}"; do
+    if [ "${is_yellow[$i]}" = "1" ]; then
+      has_yellow="true"
+      break
+    fi
+  done
+  if [ "$has_yellow" = "true" ]; then
+    echo "  Yellow drives use network storage or unknown transport and may not"
+    echo "  support SMART. They are excluded from the default selection."
+    echo ""
+  fi
 
   local range_hint="1"
   [ "$count" -gt 1 ] && range_hint="1,2..${count}"