Exclude inactive hosts from capacity history

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

@@ -1,5 +1,6 @@
 import { db } from '../db/index.js';
 import type { CapacityHistory, CapacityQuery, CapacityRange } from '../../capacity.js';
+import type { HostMode } from '../../hosts.js';
 import { readTemperatureHistory } from './temperatures.js';
 
 const windows: Record<CapacityRange, { duration: number; bucketMs: number }> = {
@@ -16,13 +17,14 @@ export function readCapacityHistory(query: CapacityQuery, now = Date.now()): Cap
     const count = duration / bucketMs;
     const hosts = handle
         .prepare(
-            `SELECT id,name,created_at FROM ec_hosts
+            `SELECT id,name,created_at,mode FROM ec_hosts
         WHERE deleted_at IS NULL ${query.hostId ? 'AND id=?' : ''} ORDER BY id`
         )
         .all(...(query.hostId ? [query.hostId] : [])) as {
         id: string;
         name: string;
         created_at: string;
+        mode: HostMode;
     }[];
     // The primary key bounds each host scan to the selected interval. Aggregate
     // before crossing the worker boundary; do not return raw heartbeat rows.
@@ -44,6 +46,9 @@ export function readCapacityHistory(query: CapacityQuery, now = Date.now()): Cap
         expectedHosts: 0
     }));
     for (const host of hosts) {
+        // Current mode determines available capacity; keep inactive hosts in
+        // the separate temperature history for diagnostics.
+        if (host.mode !== 'active') continue;
         const createdAt = Date.parse(host.created_at);
         for (const point of points) {
             if (createdAt <= Math.min(now, point.at + bucketMs)) point.expectedHosts++;

src/lib/ui/components/capacity/CapacityChart.svelte

@@ -234,10 +234,11 @@
     <details class="about">
         <summary>About this chart</summary>
         <p class="note">
-            Available host resources after the operating-system reserve, averaged per period. Gaps
-            mean reporting is incomplete. Reporting-host coverage is shown for each selected period.
-            This history includes all workloads on the selected hosts; it does not reconstruct
-            historical launch eligibility, queued jobs, or port availability.
+            Available resources from currently active hosts after the operating-system reserve,
+            averaged per period. Disabled and draining hosts are excluded. Gaps mean reporting is
+            incomplete. Reporting-host coverage is shown for each selected period. This history
+            includes all workloads on the selected hosts; it does not reconstruct historical launch
+            eligibility, queued jobs, or port availability.
         </p>
         <details bind:open={tableOpen}>
             <summary>View history data · {$timeZone.replaceAll('_', ' ')}</summary>