PROP OUT: keep Location Assets mounted on the ProP Mac; SHARE NOT MOUNTED; hold remounts

- remote-access/mac-keep-mounted.sh: a user LaunchAgent that keeps a share mounted (every minute and at
  login; Keychain login; unmount + remount only when the share hangs), installed on NA ProP for
  Chronicles' Location Assets
- PROP OUT says SHARE NOT MOUNTED instead of NOT IN <weekend> when the share is gone; its hold (and
  auto-fix) starts the agent and waits for the share

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

status_panel.py

@@ -819,7 +819,7 @@ def check_ready_manual(chk, snap, ctx):
 # What readiness.py looks at (check type "ready") and what a "ready" fix can do.
 READY_ITEMS = ("tracks", "mix_foh", "lights", "light_timing", "keys", "tune", "routing", "ears", "prop", "timecode", "backgrounds", "led_cross", "lineup", "mics",
                "track_bundle", "prop_bundle")
-READY_ACTIONS = ("recheck", "lineup_sync", "led_cross", "copy_tracks", "ltc_to_pco", "ableton_mix", "light_timing")
+READY_ACTIONS = ("recheck", "lineup_sync", "led_cross", "copy_tracks", "ltc_to_pco", "ableton_mix", "light_timing", "mount_share")
 
 CHECKS = {
     "conn": check_conn, "hyperdeck": check_hyperdeck, "dante": check_dante, "shure": check_shure,