Tweak some vim build/run stuff around jai

vimrc

@@ -1187,11 +1187,17 @@ function! Build(optimized=0, silent=0)
 
         if a:optimized == 1
             echo "Compiling release build.jai"
-            let l:cmd .= " -release"
+            " @note We pass 'release' as a user command arg for the build file
+            " to parse. -release is a compiler arg and we don't want to use
+            " that. Ideally the build script would ignore that completely.
+            let l:cmd .= " - release"
         else
             echo "Compiling debug build.jai"
         endif
 
+        " @note We aren't importing the local modules because the build file
+        " should manage that sort of thing for us.
+
     elseif l:ext == "jai"
         let l:is_jai = 1
         let l:cmd = "jai % "
@@ -1227,6 +1233,9 @@ function! Build(optimized=0, silent=0)
 endfunction
 
 function! RunProgram()
+    if filereadable("run")
+        exec "AsyncRun! -post=call\\ StopRunTask() ./run %"
+    else
         let l:ext = tolower(expand('%:e'))
         if l:ext == "jai"
             if filereadable(expand('%:p:r') . '.exe')
@@ -1245,12 +1254,9 @@ function! RunProgram()
                     call PrintError("No exe found. Compile first?")
                 endif
             endif
-
         elseif l:ext == "py"
             exec "AsyncRun! python %"
-
-    else
-        exec "AsyncRun! -post=call\\ StopRunTask() ./run %"
+        endif
     endif
 endfunction