feat: implement versioning and release management in the project

- Added automatic versioning based on git tags using semantic-release in Gitea Actions.
- Introduced new API endpoints `GET /version` and `GET /v1/version` to expose build metadata.
- Updated Docker build process to include version and build time information in Go binaries.
- Enhanced documentation with details on release processes and versioning guidelines.
- Integrated version display in the web application for better user visibility.

web/src/lib/ui/app/layout/app-sidebar.svelte

@@ -7,6 +7,7 @@
 	import PanelLeftClose from '@lucide/svelte/icons/panel-left-close';
 	import PanelLeftOpen from '@lucide/svelte/icons/panel-left-open';
 	import AppNavLinks from './app-nav-links.svelte';
+	import AppVersion from './app-version.svelte';
 	import ThemeMenu from './theme-menu.svelte';
 
 	let {
@@ -54,4 +55,5 @@
 	</div>
 	<Separator />
 	<AppNavLinks {collapsed} />
+	<AppVersion />
 </aside>

web/src/lib/ui/app/layout/app-version.svelte

@@ -0,0 +1,30 @@
+<script lang="ts">
+	import { onMount } from 'svelte';
+	import { apiJSON } from '$lib/api/client.js';
+
+	type VersionInfo = {
+		version?: string;
+		api_version?: string;
+	};
+
+	let label = $state<string | null>(null);
+
+	onMount(() => {
+		void (async () => {
+			try {
+				const info = await apiJSON<VersionInfo>('/v1/version');
+				const ver =
+					(typeof info.version === 'string' && info.version) ||
+					(typeof info.api_version === 'string' && info.api_version) ||
+					'';
+				label = ver ? `v${ver}` : null;
+			} catch {
+				label = null;
+			}
+		})();
+	});
+</script>
+
+{#if label}
+	<p class="truncate px-3 pb-3 text-xs text-sidebar-foreground/45" title={label}>{label}</p>
+{/if}

web/src/routes/monitoring/+page.svelte

@@ -100,8 +100,13 @@
 
 	const versionText = $derived.by(() => {
 		if (!version) return '—';
+		const ver =
+			(typeof version.version === 'string' && version.version) ||
+			(typeof version.api_version === 'string' && version.api_version) ||
+			'';
 		const sha =
 			typeof version.git_sha === 'string' && version.git_sha ? version.git_sha : 'unknown';
+		if (ver) return `${ver} (${sha.slice(0, 12)})`;
 		return sha.slice(0, 12);
 	});