feat: implement revision retention settings and pruning logic

Added functionality to handle revision retention minutes in global settings, including validation for input values. Introduced a new method to prune old revisions based on the specified retention period, ensuring that only the most recent revisions are kept. Updated the frontend to allow users to configure the revision retention setting, enhancing the management of revision lifecycles.

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

@@ -24,7 +24,8 @@
 		bird_local_ipv6: '',
 		bird_local_asn: '',
 		bird_bgp_source_ipv4: '',
-		bird_bgp_source_ipv6: ''
+		bird_bgp_source_ipv6: '',
+		revision_retention_minutes: ''
 	});
 	let additionalSettings = $state<Array<{ id: number; key: string; value: string }>>([]);
 	let additionalIdCounter = $state(1);
@@ -35,7 +36,8 @@
 		| 'bird_local_ipv6'
 		| 'bird_local_asn'
 		| 'bird_bgp_source_ipv4'
-		| 'bird_bgp_source_ipv6';
+		| 'bird_bgp_source_ipv6'
+		| 'revision_retention_minutes';
 
 	const knownFieldKeys: KnownFieldKey[] = [
 		'bird_router_id',
@@ -43,7 +45,8 @@
 		'bird_local_ipv6',
 		'bird_local_asn',
 		'bird_bgp_source_ipv4',
-		'bird_bgp_source_ipv6'
+		'bird_bgp_source_ipv6',
+		'revision_retention_minutes'
 	];
 
 	function isValidIPv4(value: string): boolean {
@@ -98,7 +101,8 @@
 			bird_local_ipv6: '',
 			bird_local_asn: '',
 			bird_bgp_source_ipv4: '',
-			bird_bgp_source_ipv6: ''
+			bird_bgp_source_ipv6: '',
+			revision_retention_minutes: ''
 		};
 
 		const routerId = knownFields.bird_router_id.trim();
@@ -119,6 +123,20 @@
 		const bgpV6 = knownFields.bird_bgp_source_ipv6.trim();
 		if (bgpV6 && !isValidIPv6(bgpV6)) errors.bird_bgp_source_ipv6 = 'Введите корректный IPv6 адрес';
 
+		const revisionRetentionMinutes = knownFields.revision_retention_minutes.trim();
+		if (revisionRetentionMinutes) {
+			const ttl = Number(revisionRetentionMinutes);
+			if (
+				!/^\d+$/.test(revisionRetentionMinutes) ||
+				!Number.isInteger(ttl) ||
+				ttl < 15 ||
+				ttl > 43200
+			) {
+				errors.revision_retention_minutes =
+					'TTL ревизий должен быть целым числом от 15 до 43200 минут';
+			}
+		}
+
 		return errors;
 	});
 
@@ -141,15 +159,16 @@
 			bird_local_ipv6: '',
 			bird_local_asn: '',
 			bird_bgp_source_ipv4: '',
-			bird_bgp_source_ipv6: ''
+			bird_bgp_source_ipv6: '',
+			revision_retention_minutes: ''
 		};
 		const parsedAdditional: Array<{ id: number; key: string; value: string }> = [];
 
 		for (const [key, value] of Object.entries(settings as Record<string, unknown>)) {
 			if (knownFieldKeys.includes(key as KnownFieldKey)) {
-				if (key === 'bird_local_asn') {
-					if (typeof value === 'number' && Number.isFinite(value)) parsedKnown.bird_local_asn = String(value);
-					else if (typeof value === 'string') parsedKnown.bird_local_asn = value;
+				if (key === 'bird_local_asn' || key === 'revision_retention_minutes') {
+					if (typeof value === 'number' && Number.isFinite(value)) parsedKnown[key] = String(value);
+					else if (typeof value === 'string') parsedKnown[key] = value;
 				} else if (typeof value === 'string') {
 					parsedKnown[key as KnownFieldKey] = value;
 				}
@@ -206,7 +225,7 @@
 		for (const key of knownFieldKeys) {
 			const value = knownFields[key].trim();
 			if (!value || knownFieldErrors[key]) continue;
-			if (key === 'bird_local_asn') payload[key] = Number(value);
+			if (key === 'bird_local_asn' || key === 'revision_retention_minutes') payload[key] = Number(value);
 			else payload[key] = value;
 		}
 		for (const entry of additionalSettings) {
@@ -345,6 +364,30 @@
 						</div>
 					</div>
 
+					<div class="space-y-3">
+						<h3 class="text-sm font-medium">Управление ревизиями</h3>
+
+						<div class="space-y-2">
+							<Label for="revision-retention-minutes">
+								Время жизни ревизий, мин (revision_retention_minutes)
+							</Label>
+							<Input
+								id="revision-retention-minutes"
+								type="number"
+								min="15"
+								max="43200"
+								bind:value={knownFields.revision_retention_minutes}
+								placeholder="43200"
+							/>
+							{#if knownFieldErrors.revision_retention_minutes}
+								<p class="text-sm text-red-600">{knownFieldErrors.revision_retention_minutes}</p>
+							{/if}
+							<p class="text-muted-foreground text-sm">
+								Старые ревизии удаляются автоматически. Последняя раскатанная ревизия не удаляется.
+							</p>
+						</div>
+					</div>
+
 					<div class="space-y-3">
 						<div class="flex items-center justify-between">
 							<h3 class="text-sm font-medium">Дополнительные настройки (KV)</h3>