Use ordered SQLite migrations (Refs #75)

src/lib/server/hosts/capacity-history.ts

@@ -1,5 +1,4 @@
 import { db } from '../db/index.js';
-import { ensureHostSchema } from './schema.js';
 import type { CapacityHistory, CapacityQuery, CapacityRange } from '../../capacity.js';
 
 const windows: Record<CapacityRange, { duration: number; bucketMs: number }> = {
@@ -11,7 +10,6 @@ const windows: Record<CapacityRange, { duration: number; bucketMs: number }> = {
 /** Read on the report worker: heartbeat history can contain millions of rows. */
 export function readCapacityHistory(query: CapacityQuery, now = Date.now()): CapacityHistory {
     const handle = db();
-    ensureHostSchema(handle);
     const { duration, bucketMs } = windows[query.range];
     const startAt = now - duration;
     const count = duration / bucketMs;