feat: Implement Discord release notifier script

This commit introduces a new Node.js script `post-discord-release.js` that automatically posts release notes to a Discord channel via a webhook.

Key features:
- Fetches commits between the latest and previous tags.
- Parses commit messages based on conventional commit types.
- Groups commits into predefined categories (Enhancements, Bug Fixes, Refactors, etc.).
- Cleans commit messages by removing conventional commit prefixes.
- Converts PR numbers (e.g., #123) into clickable links.
- Formats the release notes in Markdown for Discord.
- Includes a download link to the GitHub release.
- Skips certain commit types (e.g., `chore(changelog)`, `chore(deps)`).

Signed-off-by: CreativeCodeCat <wayne6324@gmail.com>

Author: CreativeCodeCat

post-discord-release.js

@@ -0,0 +1,128 @@
+#!/usr/bin/env node
+
+const https = require("https");
+const { execSync } = require("child_process");
+
+const WEBHOOK_URL = process.env.DISCORD_WEBHOOK_URL;
+const REPO_URL = "https://github.com/DroidWorksStudio/mLauncher";
+
+// Commit parsing rules
+const commitParsers = [
+	{ message: /^chore\(changelog\):/i, skip: true },
+	{ message: /^chore\(release\): prepare for/i, skip: true },
+	{ message: /^chore\(deps.*\)/i, skip: true },
+	{ message: /^chore\(change.*\)/i, skip: true },
+	{ message: /^chore\(pr\)/i, skip: true },
+	{ message: /^chore\(pull\)/i, skip: true },
+	{ message: /^fixes/i, skip: true },
+	{ message: /^feat|^perf|^style|^ui|^ux/i, group: "Enhancements" },
+	{ message: /^fix|^bug|^hotfix|^emergency/i, group: "Bug Fixes" },
+	{ message: /^refactor/i, group: "Refactors" },
+	{ message: /^doc|^lang|^i18n/i, group: "Documentation & Language" },
+	{ message: /^security/i, group: "Security" },
+	{ message: /^revert/i, group: "Reverts" },
+	{ message: /^build/i, group: "Build" },
+	{ message: /^dependency|^deps/i, group: "Dependencies" },
+	{ message: /^config|^configuration|^ci|^pipeline|^release|^version|^versioning/i, group: "Meta" },
+	{ message: /^test/i, group: "Tests" },
+	{ message: /^infra|^infrastructure|^ops/i, group: "Infrastructure & Ops" },
+	{ message: /^chore|^housekeeping|^cleanup|^clean\(up\)/i, group: "Maintenance & Cleanup" },
+	{ message: /^drop|^remove/i, group: "Feature Removals" },
+];
+
+const GROUP_ORDER = commitParsers.filter((p) => !p.skip).map((p) => p.group);
+
+function run(cmd) {
+	return execSync(cmd, { encoding: "utf8" }).trim();
+}
+
+function cleanMessage(message) {
+	return message.replace(/^(feat|fix|bug|lang|i18n|doc|perf|refactor|style|ui|ux|security|revert|release|dependency|deps|build|ci|pipeline|chore|housekeeping|version|versioning|config|configuration|cleanup|clean\(up\)|drop|remove|hotfix|emergency|test|infra|infrastructure|ops|asset|content|exp|experiment|prototype)\s*(\(.+?\))?:\s*/i, "");
+}
+
+function linkPR(message) {
+	return message.replace(/\(#(\d+)\)/g, (_, num) => `([#${num}](${REPO_URL}/pull/${num}))`);
+}
+
+function classifyCommit(message) {
+	for (const parser of commitParsers) {
+		if (parser.message.test(message)) {
+			if (parser.skip) return null;
+			return parser.group;
+		}
+	}
+	return null;
+}
+
+// Get latest tag
+const allTags = run("git tag --sort=-creatordate").split("\n");
+const latestTag = allTags[0];
+const previousTag = allTags[1];
+const range = previousTag ? `${previousTag}..${latestTag}` : latestTag;
+
+// Get commits
+const rawCommits = run(`git log ${range} --pretty=format:"%h|%s"`).split("\n");
+const commits = rawCommits
+	.map((line) => {
+		const [hash, ...msgParts] = line.split("|");
+		const message = msgParts.join("|").trim();
+		const group = classifyCommit(message);
+		if (!group) return null;
+		return { group, message: linkPR(cleanMessage(message)), hash };
+	})
+	.filter(Boolean);
+
+// Group commits
+const groups = {};
+for (const c of commits) {
+	groups[c.group] = groups[c.group] || [];
+	groups[c.group].push(`* ${c.message} ([${c.hash}](${REPO_URL}/commit/${c.hash}))`);
+}
+
+// Build plain message
+let discordMessage = `## Multi Launcher ${latestTag}\n`;
+
+for (const group of GROUP_ORDER) {
+	if (!groups[group] || groups[group].length === 0) continue;
+	discordMessage += `**${group}**\n${groups[group].join("\n")}\n\n`;
+}
+
+// Fallback
+if (!commits.length) discordMessage += "No commits found.";
+
+// Append download link
+discordMessage += `\n[Download Multi Launcher](${REPO_URL}/releases/tag/${latestTag})`;
+
+// Send to Discord
+const payload = JSON.stringify({
+	content: discordMessage,
+	username: "Multi Launcher Updates!",
+	avatar_url: "https://github.com/DroidWorksStudio/mLauncher/blob/main/fastlane/metadata/android/en-US/images/icon.png?raw=true",
+});
+
+const url = new URL(WEBHOOK_URL);
+const options = {
+	hostname: url.hostname,
+	path: url.pathname + url.search,
+	method: "POST",
+	headers: {
+		"Content-Type": "application/json",
+		"Content-Length": payload.length,
+	},
+};
+
+const req = https.request(options, (res) => {
+	let data = "";
+	res.on("data", (chunk) => (data += chunk));
+	res.on("end", () => {
+		if (res.statusCode >= 200 && res.statusCode < 300) {
+			console.log("✅ Release posted to Discord!");
+		} else {
+			console.error("Failed to post:", res.statusCode, data);
+		}
+	});
+});
+
+req.on("error", (e) => console.error("Error:", e));
+req.write(payload);
+req.end();