palota

You have to use paththrough navigation. Then in the navigate function you can stop the bot:
this.Goto(this.Bot.GetPosition());  

Engineers don't fire garand grenades when they are going to PLANT goals. Do you need to disable it for BUILD goals too ? Maybe I could add a new optional property to the BUILD goal which would be used for objectives that need a lot of charge.
If you want to disable grenades in some narrow corridors, you can create a region trigger and use function ETUtil.DisableRifleNade.
Function WeaponTable.SetWeaponAvailability can be used to set weapons for team/class, but it's not possible to set a weapon for a role.
If you want to change weapons manually in triggers, you should set Map.DontSelectWeapons=true. That will solve the problem of spawn self killing, but it completely disables weapon selection globally for all bots.

This is not a goal. It's a paththrough navigation. It is executed when a bot goes through that waypoint. Bots visit that location because there is DEFEND goal. If you want to change priority or make it class specific, you can set it on the DEFEND goal.

The trigger distance is not from the target goal, but from a grenade. If somebody is standing just beside a bot, then his thrown grenade immediately enters the radius. It would be necessary to calculate trajectory of a grenade and predict coordinates of explosion. Maybe I could use some code from the mortar goal.
I agree with your other suggestions and I added them to my to-do list.

I updated goal_rolemanager.gm now so that you can use AllBots=true to assign all other bots to that role:
Roles = { ALLIES = { AllBots = true, DEFENDER1 = { numbots = 2, }, DEFENDER2 = { numbots = 2, AllBots = true, }, }, },  

Why don't you use the PrintScreen key or Snipping tool to make screenshots ?
There must not be "=" in server.cfg. You have to delete = after set omnibot_path.

Where can we download pk3 file of this map ?
You should never use entity numbers because they depend on mods. You should use GetEntityByName instead of GetGameEntityFromId. If the entity does not have any name, then you can use TraceLine.
Functions GetEntityByName and GetGameEntityFromId return null if the entity is invalid. Correct condition is:
if(ent1) { print("Entity is valid"); }  
You must not use GetEntTeam in OnExit because it returns null if a player disconnected. Players can also change team when they are inside the region. See wiki how to count players in a region.

You cannot query the current stamina.

This is not related to bots. The same problem happens if you watch human players. There are a lot of bugs in the omnibot mod because it is based on the original game from year 2001. The spectator stamina is displayed correctly in newer mods (legacy, nitmod, noquarter, silent). It does not work in jaymod and etpub.

gm scripts are case-sensitive. There must be Goto, not GoTo.
Why didn't you copy the function from this page and paste it into your script (Ctrl+C, Ctrl+V) ?
 

The end of EvalFunc }, should be on line 79 after return, not on line 86.

Navigation = { stop = { EvalFunc = function() { return !this.StopTime || GetTime()-this.StopTime > 2; }, navigate = function() { this.Goto(this.Bot.GetPosition()); sleep(3); this.StopTime = GetTime(); }, }, },  

Use Paththrough Navigation
Navigation = { stop = { navigate = function() { this.Goto(this.Bot.GetPosition()); sleep(3); }, }, },  
/bot waypoint_setproperty paththrough Navigation_PT:stop

After the wp_check command you can use commands /bot wt DUPE1; /bot wt DUPE2 etc.

You can set g_engineerChargeTime

You increased the range of the MORTAR goal. But you have to increase the range of the AMMOCAB goal which is only 1250.
AMMOCAB_main_ammocabinet = { CreateOnLoad = 0, GoalType = "AMMOCAB", Position = Vec3(1512.000, 939.000, 516.000), Range = 1250, TeamAvailability = 6, },  

The chosen botToKill is never an engineer because botToKill has goal FLAG, but engineer has goal PLANT.

foreach(g in Util.GoalTable("FLAGRETURN.*")) { Util.MapDebugPrint("Position " + g.GetPosition()); }  

It does not count dead players because dead players cannot carry anything. But you can get distance to a dropped object from a FLAGRETURN goal.
foreach(g in Util.GoalTable("FLAGRETURN.*")) { d = DistanceBetween(g, Vec3(-1824, 2115, 4)); Util.MapDebugPrint("Distance " + d); }  

for ( i = 0; i < 64; i += 1 ) { if ( EntityIsValid(i) && GetEntFlags(i, ENTFLAG.CARRYINGGOAL) ){ d = DistanceBetween(i, Vector3(-1824, 2115, 4)); Util.MapDebugPrint("Distance " + d); } }  

Here's my solution:  voilegarde_b3.gm

I uploaded new omnibot mod binaries for Windows 32bit to my Google drive.

I will increase MAX_MENUS from 64 to 128 in the next Omnibot mod version.

I uploaded new omnibot mod binaries for Windows 32bit to my Google drive.

I will increase MAX_MENUS from 64 to 128 in the next Omnibot mod version.