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 % "
@@ -1227,30 +1233,30 @@ function! Build(optimized=0, silent=0)
 endfunction
 
 function! RunProgram()
-    let l:ext = tolower(expand('%:e'))
+    if filereadable("run")
-    if l:ext == "jai"
-        if filereadable(expand('%:p:r') . '.exe')
-            exec "AsyncRun! " . expand('%:p:r') . ".exe"
-        else
-            if tolower(expand('%:h')) == "modules"
-                " This is likely a jai module inside a project. Check for an " exe one directory back.
-                let l:files = systemlist('ls ' . expand('%:p:h') . '/../*.exe 2>/dev/null')
-            else
-                let l:files = systemlist('ls ' . expand('%:p:h') . '/*.exe 2>/dev/null')
-            endif
-
-            if len(l:files) > 0
-                exec "AsyncRun! " . l:files[0]
-            else
-                call PrintError("No exe found. Compile first?")
-            endif
-        endif
-
-    elseif l:ext == "py"
-        exec "AsyncRun! python %"
-
-    else
         exec "AsyncRun! -post=call\\ StopRunTask() ./run %"
+    else
+        let l:ext = tolower(expand('%:e'))
+        if l:ext == "jai"
+            if filereadable(expand('%:p:r') . '.exe')
+                exec "AsyncRun! " . expand('%:p:r') . ".exe"
+            else
+                if tolower(expand('%:h')) == "modules"
+                    " This is likely a jai module inside a project. Check for an " exe one directory back.
+                    let l:files = systemlist('ls ' . expand('%:p:h') . '/../*.exe 2>/dev/null')
+                else
+                    let l:files = systemlist('ls ' . expand('%:p:h') . '/*.exe 2>/dev/null')
+                endif
+
+                if len(l:files) > 0
+                    exec "AsyncRun! " . l:files[0]
+                else
+                    call PrintError("No exe found. Compile first?")
+                endif
+            endif
+        elseif l:ext == "py"
+            exec "AsyncRun! python %"
+        endif
     endif
 endfunction