feat(ajustes): adicionar aba changelog com histórico de versões

Parser lê o CHANGELOG.md e exibe as versões com badges por tipo de mudança
(Adicionado, Alterado, Corrigido) na página de ajustes.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/changelog/parse-changelog.ts

@@ -0,0 +1,60 @@
+import fs from "node:fs";
+import path from "node:path";
+
+export type ChangelogSection = {
+	type: string;
+	items: string[];
+};
+
+export type ChangelogVersion = {
+	version: string;
+	date: string;
+	sections: ChangelogSection[];
+};
+
+export function parseChangelog(): ChangelogVersion[] {
+	const filePath = path.join(process.cwd(), "CHANGELOG.md");
+	const content = fs.readFileSync(filePath, "utf-8");
+	const lines = content.split("\n");
+
+	const versions: ChangelogVersion[] = [];
+	let currentVersion: ChangelogVersion | null = null;
+	let currentSection: ChangelogSection | null = null;
+
+	for (const line of lines) {
+		const versionMatch = line.match(/^## \[(.+?)\] - (.+)$/);
+		if (versionMatch) {
+			if (currentSection && currentVersion) {
+				currentVersion.sections.push(currentSection);
+			}
+			currentVersion = {
+				version: versionMatch[1],
+				date: versionMatch[2],
+				sections: [],
+			};
+			versions.push(currentVersion);
+			currentSection = null;
+			continue;
+		}
+
+		const sectionMatch = line.match(/^### (.+)$/);
+		if (sectionMatch && currentVersion) {
+			if (currentSection) {
+				currentVersion.sections.push(currentSection);
+			}
+			currentSection = { type: sectionMatch[1], items: [] };
+			continue;
+		}
+
+		const itemMatch = line.match(/^- (.+)$/);
+		if (itemMatch && currentSection) {
+			currentSection.items.push(itemMatch[1]);
+		}
+	}
+
+	if (currentSection && currentVersion) {
+		currentVersion.sections.push(currentSection);
+	}
+
+	return versions;
+}