split scheduling into scan + process windows, move controls to settings page

the old one-window scheduler gated only the job queue. now the scan loop and
the processing queue have independent windows — useful when the container
runs as an always-on service and we only want to hammer jellyfin + ffmpeg
at night.

config keys renamed from schedule_* to scan_schedule_* / process_schedule_*,
plus the existing job_sleep_seconds. scheduler.ts exposes parallel helpers
(isInScanWindow / isInProcessWindow, waitForScanWindow / waitForProcessWindow)
so each caller picks its window without cross-contamination.

scan.ts checks the scan window between items and emits paused/resumed sse.
execute.ts keeps its per-job pause + sleep-between-jobs but now on the
process window. /api/execute/scheduler moved to /api/settings/schedule.

frontend: ScheduleControls popup deleted from the pipeline header, replaced
with a plain Start queue button. settings page grows a Schedule section with
both windows and the job sleep input.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/api/execute.ts

@@ -8,13 +8,12 @@ import { getItem, refreshItem } from "../services/jellyfin";
 import { loadLibrary as loadRadarrLibrary, isUsable as radarrUsable } from "../services/radarr";
 import { upsertJellyfinItem } from "../services/rescan";
 import {
-	getSchedulerState,
-	isInScheduleWindow,
-	msUntilWindow,
-	nextWindowTime,
+	getScheduleConfig,
+	isInProcessWindow,
+	msUntilProcessWindow,
+	nextProcessWindowTime,
 	sleepBetweenJobs,
-	updateSchedulerState,
-	waitForWindow,
+	waitForProcessWindow,
 } from "../services/scheduler";
 import { loadLibrary as loadSonarrLibrary, isUsable as sonarrUsable } from "../services/sonarr";
 import type { Job, MediaItem, MediaStream } from "../types";
@@ -105,17 +104,20 @@ async function runSequential(jobs: Job[]): Promise<void> {
 	try {
 		let first = true;
 		for (const job of jobs) {
-			// Pause outside the scheduler window
-			if (!isInScheduleWindow()) {
-				emitQueueStatus("paused", { until: nextWindowTime(), seconds: Math.round(msUntilWindow() / 1000) });
-				await waitForWindow();
+			// Pause outside the processing window
+			if (!isInProcessWindow()) {
+				emitQueueStatus("paused", {
+					until: nextProcessWindowTime(),
+					seconds: Math.round(msUntilProcessWindow() / 1000),
+				});
+				await waitForProcessWindow();
 			}
 
 			// Sleep between jobs (but not before the first one)
 			if (!first) {
-				const state = getSchedulerState();
-				if (state.job_sleep_seconds > 0) {
-					emitQueueStatus("sleeping", { seconds: state.job_sleep_seconds });
+				const cfg = getScheduleConfig();
+				if (cfg.job_sleep_seconds > 0) {
+					emitQueueStatus("sleeping", { seconds: cfg.job_sleep_seconds });
 					await sleepBetweenJobs();
 				}
 			}
@@ -527,17 +529,7 @@ async function runJob(job: Job): Promise<void> {
 	}
 }
 
-// ─── Scheduler ────────────────────────────────────────────────────────────────
-
-app.get("/scheduler", (c) => {
-	return c.json(getSchedulerState());
-});
-
-app.patch("/scheduler", async (c) => {
-	const body = await c.req.json();
-	updateSchedulerState(body);
-	return c.json(getSchedulerState());
-});
+// Scheduler endpoints live on /api/settings/schedule now — see server/api/settings.ts.
 
 // ─── FFmpeg progress parsing ───────────────────────────────────────────────────