Add capacity overview with host resource history

src/lib/capacity.ts

@@ -0,0 +1,63 @@
+import type { CapacityCalibration, HostReadiness } from './hosts.js';
+
+export type CapacityRange = '1h' | '24h' | '7d';
+export type CapacityGame = 'all' | 't5' | 't6';
+export interface CapacityQuery { range: CapacityRange; hostId: string | null; game: CapacityGame }
+export function parseCapacityQuery(params: URLSearchParams): CapacityQuery {
+    const range = params.get('range');
+    const game = params.get('game');
+    return { range: range === '1h' || range === '7d' ? range : '24h',
+        game: game === 't5' || game === 't6' ? game : 'all', hostId: params.get('host')?.trim().slice(0, 100) || null };
+}
+
+export interface CapacityHistoryPoint {
+    at: number;
+    cpuCoresAvailable: number | null;
+    memoryBytesAvailable: number | null;
+    reportingHosts: number;
+    expectedHosts: number;
+}
+export interface CapacityHistory {
+    range: CapacityRange;
+    startAt: number;
+    endAt: number;
+    bucketMs: number;
+    points: CapacityHistoryPoint[];
+}
+export interface CapacityHost {
+    id: string;
+    name: string;
+    readiness: HostReadiness;
+    connected: boolean;
+    updatedAt: string | null;
+    eligible: boolean;
+    games: ('t5' | 't6')[];
+    reasons: string[];
+    cpuCoresAvailable: number | null;
+    memoryBytesAvailable: number | null;
+    portsAvailable: number;
+    totalPorts: number;
+    estimatedServers: number | null;
+    limits: { cpu: number | null; memory: number | null; ports: number };
+    limitingResource: 'CPU' | 'Memory' | 'Ports' | null;
+    calibration: CapacityCalibration;
+}
+export interface CapacityCurrent {
+    updatedAt: string | null;
+    summary: {
+        estimatedServers: number | null;
+        cpuCoresAvailable: number | null;
+        memoryBytesAvailable: number | null;
+        portsAvailable: number | null;
+        eligibleHosts: number;
+        totalHosts: number;
+        startupSlots: number | null;
+        startupLimit: number | null;
+        activeStartups: number | null;
+        queued: number | null;
+    };
+    hosts: CapacityHost[];
+    hostOptions: { id: string; name: string }[];
+    warnings: string[];
+}
+export interface CapacityData { query: CapacityQuery; current: CapacityCurrent; history: CapacityHistory }