refactor(parser): remove unreachable duplicate priority check in step 5

Step 4 already consumes the (X) priority token before step 5 runs, so
the identical check inside the `!t.Completed` block could never match.
No behavior change (verified against test.todo.txt).

internal/parser/parser.go

@@ -231,14 +231,8 @@ func ParseLine(line string) (Task, error) {
 		i++
 	}
 
-	// 5) If not completed, check for priority at start
+	// 5) Creation date for incomplete tasks (priority, if any, was already consumed in step 4)
 	if !t.Completed {
-		if i < len(toks) && len(toks[i]) == 3 && toks[i][0] == '(' && toks[i][2] == ')' && toks[i][1] >= 'A' && toks[i][1] <= 'Z' {
-			r := rune(toks[i][1])
-			t.Priority = &r
-			i++
-		}
-		// Creation date for incomplete tasks
 		if i < len(toks) && dateRe.MatchString(toks[i]) {
 			if dt, err := time.Parse(dateLayout, toks[i]); err == nil {
 				t.CreationDate = &dt