feat: overhaul lander suicide burn, add transfer GUI, improve ascent fairing logic

- lander.ks: Replace fixed suicide burn with dynamic throttle control using
  vertical fraction, gateRatio, and finalPhase logic; simplify post-land
  sequence to SAS stabilityassist
- transfer.ks: Replace hardcoded Mun target with GUI popup menu populated
  from body:orbitingchildren
- ascent.ks: Change fairing jettison trigger from dynamic pressure to
  altitude > atm height; guard antenna extension with hasmodule check
- basic.ks: Append stayRunner invocation at end of script
- boot/boot.ks: Remove commented RT connection block; add newline before runPath
- boot/testing.ks: Switch to volume 0 and use relative paths for transfer
  and doManeuver scripts
- boot/heloBoot.ks: Delete unused boot file

scripts/ascent.ks

@@ -83,7 +83,7 @@ function basicAscent {
 
   gravityTurn(targetHeading).
 
-  when ship:q < 0.01 then {
+  when ship:altitude > body:atm:height then {
     for f in fairings {
       // get the module and deploy it
       set m to f:getmodule("ModuleProceduralFairing").
@@ -96,10 +96,11 @@ function basicAscent {
     panels on.
     radiators on.
     for a in antennas {
-      set m to a:getmodule("ModuleDeployableAntenna").
-      if m:hasevent("extend antenna") m:doevent("extend antenna").
+      if a:hasmodule("ModuleDeployableAntenna") {
+        set m to a:getmodule("ModuleDeployableAntenna").
+        if m:hasevent("extend antenna") m:doevent("extend antenna").
+      }
     }    
-
   }
 
   // try to limit the throttle to get a good ascent