fix: SPC() infinite loop and direct command loop after break

SPC(0) caused an infinite loop because bra always branched back
regardless of Y reaching zero. Changed to bne to exit when count
reaches zero.

Direct commands (typed at console) looped endlessly after a break
because codePtr+2 was left at 0, making DoCheckEnd think there
were more pages to process. Set codePtr+2 = pageCount-1 so the
end-of-program check terminates correctly.

Author: mbrukner

source/common/cli/warmstart.asm

@@ -53,6 +53,9 @@ _WSNotSlash:
 		;		Run code in token buffer
 		;
 		stz 	tokenOffset 				; zero the "offset", meaning it only runs one line.
+		lda 	pageCount 					; set page index to last page so DoCheckEnd
+		dec 	a 							; sees end-of-program (CPX pageCount sets Z=1
+		sta 	codePtr+2 					; when codePtr+2 = pageCount-1, after INX).
 		.csetcodepointer tokenOffset		; set up the code pointer.
 		lda 	tokenBuffer 				; nothing to run
 		cmp 	#KWC_EOL

source/common/commands/run.asm

@@ -73,8 +73,8 @@ _CRIncMainLoop:
 		.breakcheck							; break check
 		bne 	_CRBreak
 		.tickcheck TickHandler  			; if time elapsed call the tick handler.
-_CRNoBreakCheck:		
-		; 									
+_CRNoBreakCheck:
+		;
 		iny									; next token
 _CRMainLoop:
 		stz 	stringInitialised 			; clear the temporary string initialised flag.

source/common/expressions/unary/string/spc.asm

@@ -31,7 +31,7 @@ _SpcLoop:
 		lda 	#32
 		jsr 	StringTempWrite
 		dey
-		bra 	_SpcLoop
+		bne 	_SpcLoop
 _SpcExit:
 		ply
 		jmp 	CheckRightBracket