Support parenthesized NWS discussion headings

internal/providers/nws/forecast_discussion.go

@@ -426,6 +426,11 @@ func parseForecastDiscussionSectionHeading(line string) (forecastDiscussionSecti
 	if strings.HasSuffix(line, "/...") {
 		return parseForecastDiscussionSlashQualifiedHeading(line)
 	}
+	if strings.HasSuffix(line, "...") {
+		if heading, ok := parseForecastDiscussionParenthesizedTerminalHeading(line); ok {
+			return heading, true
+		}
+	}
 	return parseForecastDiscussionEllipsisHeading(line)
 }
 
@@ -453,6 +458,38 @@ func parseForecastDiscussionSlashQualifiedHeading(line string) (forecastDiscussi
 	return forecastDiscussionSectionHeading{section: section, qualifier: qualifier}, true
 }
 
+func parseForecastDiscussionParenthesizedTerminalHeading(line string) (forecastDiscussionSectionHeading, bool) {
+	if len(line) < 4 || line[0] != '.' || !strings.HasSuffix(line, "...") {
+		return forecastDiscussionSectionHeading{}, false
+	}
+
+	content := strings.TrimRight(line[1:len(line)-3], " \t")
+	if !strings.HasSuffix(content, ")") {
+		return forecastDiscussionSectionHeading{}, false
+	}
+
+	separator := -1
+	for i := 1; i < len(content); i++ {
+		if content[i] == '(' && isForecastDiscussionHorizontalWhitespace(content[i-1]) {
+			separator = i
+			break
+		}
+	}
+	if separator < 0 {
+		return forecastDiscussionSectionHeading{}, false
+	}
+
+	section, ok := normalizeForecastDiscussionSectionIdentity(content[:separator])
+	if !ok {
+		return forecastDiscussionSectionHeading{}, false
+	}
+	qualifier := content[separator:]
+	if len(qualifier) <= 2 || strings.TrimSpace(qualifier[1:len(qualifier)-1]) == "" {
+		return forecastDiscussionSectionHeading{}, false
+	}
+	return forecastDiscussionSectionHeading{section: section, qualifier: qualifier}, true
+}
+
 func parseForecastDiscussionEllipsisHeading(line string) (forecastDiscussionSectionHeading, bool) {
 	content := line[1:]
 	delimiter := strings.Index(content, "...")