fix(dsl): render [p] labels in italics

Style and grammar labels printed upright while sources mark the same
words in different ways, so identical labels rendered inconsistently.

Every [p] block now uses the label color with italic posture, and the
text scan for specific label words is removed.

app/src/main/java/com/example/research/ui/article/DslAnnotatedParser.kt

@@ -216,7 +216,7 @@ object DslAnnotatedParser {
                                         }
                                     }
                                     "p" -> {
-                                        push(labelStyle)
+                                        push(labelStyle.copy(fontStyle = FontStyle.Italic))
                                     }
                                     "b" -> push(SpanStyle(fontWeight = FontWeight.Bold))
                                     "m", "m0", "m1", "m2", "m3", "m4", "m5" -> {