feat(jellyseer): stats backend — provider, stat widgets, router (slice 1/3)

Groundwork for Jellyseerr request stats in the Jellyfin service, behind a
small reusable abstraction so future stats services (Sonarr/Radarr) reuse it.

Backend:
- JellyseerrClient.request_count() -> /api/v1/request/count (normalized
  total/pending/approved/declined/processing/available) and recent_requests()
  -> /api/v1/request mapped to {name,type,status,media_status,created_at}
  with numeric status enums labelled.
- widgets/stats_provider.py: StatsProvider protocol + registry keyed by
  service_type (StatValue/StatsResult). A thin generic interface.
- widgets/jellyseerr_stats.py: JellyseerrStatsProvider registered for the
  Jellyfin service; reuses one authenticated client per service (lru_cache) and
  caches the StatsResult for ~10s under a lock, so multiple widgets + the tab
  collapse onto one Jellyseerr fetch (same lesson as the qBittorrent client).
  Accepts jellyseerr_api_key from secrets OR config during the upcoming
  config->secret migration.
- Jellyfin service gains two widget kinds: `stat` (a Literal selector over the
  six stats — the "extract one value into a widget" affordance) and
  `stats_overview` (all stats + recent list).
- widgets router routes widget_kind in {stat, stats_overview} to a generic
  StatsWidgetSource (dispatches to the service type's provider), independent of
  service type.
- new /api/jellyseerr/stats router endpoint for the Requests tab (resolves the
  Jellyfin service by id or first-enabled; shares the provider cache).

Tests: provider normalization, not-configured, TTL caching; stat selector +
overview + unknown-stat widget dispatch; 7 new tests. 400/400 backend pass;
ruff clean.

backend/src/media_library_viewer_api/routers/.pi-map.index.md

@@ -2,7 +2,7 @@
 dir: backend/src/media_library_viewer_api/routers
 
 ## role
-FastAPI router package that defines all HTTP API endpoints for the media library viewer backend, organizing routes by domain (auth, backups, dashboards, files, jobs, media, monitoring, services, settings, tasks, widgets).
+FastAPI router package that organizes and exposes all REST API endpoints for the media library viewer backend, covering authentication, dashboards, media management, backups, monitoring, services, files, and task execution.
 ## parent
 index: backend/src/media_library_viewer_api/.pi-map.index.md
 map: backend/src/media_library_viewer_api/.pi-map.md
@@ -15,6 +15,7 @@ map: backend/src/media_library_viewer_api/.pi-map.md
 - dashboard.py
 - dashboards.py
 - files.py
+- jellyseerr.py
 - jobs.py
 - media.py
 - monitoring.py

backend/src/media_library_viewer_api/routers/.pi-map.md

@@ -4,25 +4,26 @@ dir: backend/src/media_library_viewer_api/routers
 index: backend/src/media_library_viewer_api/routers/.pi-map.index.md
 
 ## role
-FastAPI router package that defines all HTTP API endpoints for the media library viewer backend, organizing routes by domain (auth, backups, dashboards, files, jobs, media, monitoring, services, settings, tasks, widgets).
+FastAPI router package that organizes and exposes all REST API endpoints for the media library viewer backend, covering authentication, dashboards, media management, backups, monitoring, services, files, and task execution.
 ## files
 - __init__.py | Marks the directory as a Python package for routers.
 - authentik_users.py | Provides a FastAPI router that proxies paginated user directory queries and email message enqueueing through an Authentik service client. | exp: class:MessageRequest, func:_build_client(service: ServiceRecord) → AuthentikClient, call:str(service.config.get("base_url") or "").rstrip, call:service.config.get, call:service.secrets.get, call:float, call:AuthentikClient, func:_empty(error: str) → dict[str, Any], func:get_authentik_users(service_id: str, search, page, page_size, store) → dict[str, Any], call:resolve_service_record, call:logger.info, call:_empty, call:_build_client, call:client.users, call:logger.exception, func:get_authentik_message_status(service_id: str, store, mail_queue) → dict[str, Any], call:resolve_service_record, call:mail_queue.status, func:post_authentik_message(service_id: str, body: MessageRequest, store, mail_queue) → dict[str, Any], call:resolve_service_record, call:r.strip, call:get_settings, call:validate_smtp_settings, call:mail_queue.enqueue, call:logger.info, call:len | dep: logging, typing, fastapi, pydantic, media_library_viewer_api.clients.authentik, media_library_viewer_api.config, media_library_viewer_api.dependencies, media_library_viewer_api.services.mail_queue, media_library_viewer_api.services.mailer, media_library_viewer_api.services.service_resolution, media_library_viewer_api.services.settings_store, media_library_viewer_api.widgets.sources
-- backups.py | FastAPI router for receiving backup run reports, managing backup jobs/runs, and generating/acknowledging backup alerts. | exp: func:_resolve_backup_service_id(store: SettingsStore, explicit) → str, call:store.list_services, call:svc.get, func:_get_or_create_job(store: SettingsStore, report: BackupReportRequest, service_id) → dict[str, Any], call:store.get_backup_job_by_name, call:store.upsert_backup_job, call:store.get_backup_job, func:post_backup_report(report: BackupReportRequest, service_id, store, _auth) → BackupRunResponse, call:_resolve_backup_service_id, call:_get_or_create_job, call:store.list_backup_runs, call:int, call:report.started_at.timestamp, call:abs, call:BackupRunResponse, call:report.ended_at.timestamp, call:store.create_backup_run, call:record_backup_run, call:generate_alerts_for_run, call:store.create_backup_alert, call:store.resolve_backup_alerts_for_job, call:run.pop, func:post_backup_start(report: BackupReportRequest, service_id, store, _auth) → BackupRunResponse, call:_resolve_backup_service_id, call:_get_or_create_job, call:int, call:report.started_at.timestamp, call:store.create_backup_run, call:record_backup_run, call:run.pop, call:BackupRunResponse, func:get_backup_jobs(store) → list[dict[str, Any]], call:store.list_backup_jobs, func:get_backup_job(job_id: str, store) → dict[str, Any], call:store.get_backup_job, call:store.list_backup_runs, raise:HTTPException, func:get_backup_runs(job_id, status, limit, store) → list[BackupRunResponse], call:store.list_backup_runs, call:BackupRunResponse, func:get_backup_run(run_id: str, store) → BackupRunResponse, call:store.get_backup_run, call:BackupRunResponse, raise:HTTPException, func:get_backup_alerts(job_id, acknowledged, severity, store) → list[BackupAlertResponse], call:store.list_backup_alerts, call:BackupAlertResponse, func:acknowledge_backup_alert(alert_id: str, store) → BackupAlertResponse, call:store.acknowledge_backup_alert, call:BackupAlertResponse, raise:HTTPException | dep: typing, fastapi, ..auth, ..models.backups, ..observability, ..services.backup_alert_engine, ..services.settings_store
+- backups.py | FastAPI router providing REST endpoints for reporting, querying, and managing backup jobs, runs, and alerts. | exp: func:_resolve_backup_service_id(store: SettingsStore, explicit) → str, call:store.list_services, call:svc.get, func:_get_or_create_job(store: SettingsStore, report: BackupReportRequest, service_id) → dict[str, Any], call:store.get_backup_job_by_name, call:store.upsert_backup_job, call:store.get_backup_job, func:post_backup_report(report: BackupReportRequest, service_id, store, _auth) → BackupRunResponse, call:_resolve_backup_service_id, call:_get_or_create_job, call:store.list_backup_runs, call:int, call:report.started_at.timestamp, call:abs, call:BackupRunResponse, call:report.ended_at.timestamp, call:store.create_backup_run, call:record_backup_run, call:generate_alerts_for_run, call:store.create_backup_alert, call:store.resolve_backup_alerts_for_job, call:run.pop, func:post_backup_start(report: BackupReportRequest, service_id, store, _auth) → BackupRunResponse, call:_resolve_backup_service_id, call:_get_or_create_job, call:int, call:report.started_at.timestamp, call:store.create_backup_run, call:record_backup_run, call:run.pop, call:BackupRunResponse, func:get_backup_jobs(service_id, store) → list[dict[str, Any]], call:store.list_backup_jobs, func:get_backup_job(job_id: str, store) → dict[str, Any], call:store.get_backup_job, call:store.list_backup_runs, raise:HTTPException, func:get_backup_runs(job_id, status, limit, service_id, store) → list[BackupRunResponse], call:store.list_backup_runs, call:BackupRunResponse, func:get_backup_run(run_id: str, store) → BackupRunResponse, call:store.get_backup_run, call:BackupRunResponse, raise:HTTPException, func:get_backup_alerts(job_id, acknowledged, severity, service_id, store) → list[BackupAlertResponse], call:store.list_backup_alerts, call:BackupAlertResponse, func:acknowledge_backup_alert(alert_id: str, store) → BackupAlertResponse, call:store.acknowledge_backup_alert, call:BackupAlertResponse, raise:HTTPException | dep: typing, fastapi, ..auth, ..models.backups, ..observability, ..services.backup_alert_engine, ..services.settings_store
 - dashboard.py | FastAPI router providing dashboard endpoints for media counts, library breakdowns, shortcuts CRUD, activity sessions, and backup summaries. | exp: func:get_counts(client, user_id) → dict[str, int], call:client.media_counts, call:logger.info, func:get_library_counts(client, user_id) → list[dict[str, Any]], call:client.libraries, call:logger.info, call:len, call:client.library_item_counts, func:get_shortcuts() → list[dict[str, Any]], call:store.list_shortcuts, call:logger.info, call:len, func:create_shortcut(payload: dict[str, Any]) → dict[str, Any], call:store.upsert_shortcut, call:logger.info, call:shortcut.get, func:update_shortcut(shortcut_id: str, payload: dict[str, Any]) → dict[str, Any], call:store.upsert_shortcut, call:logger.info, call:shortcut.get, func:delete_shortcut(shortcut_id: str) → dict[str, str], call:store.delete_shortcut, call:logger.info, func:get_activity(client) → list[dict[str, Any]], call:client.sessions, call:_map_sessions_to_activity_rows, call:rows.sort, call:state_rank.get, call:r.get, call:str(r.get("user", "")).lower, call:logger.info, call:len, func:get_now_playing(client) → list[dict[str, Any]], call:get_activity, func:get_backup_dashboard(store) → BackupDashboardSummary, call:build_backup_dashboard_summary | dep: logging, typing, fastapi, media_library_viewer_api.clients.jellyfin, media_library_viewer_api.dependencies, media_library_viewer_api.domain.dashboard, media_library_viewer_api.models.backups, media_library_viewer_api.services.settings_store
 - dashboards.py | Provides CRUD API endpoints for managing named dashboards via a FastAPI router. | exp: func:list_dashboards(store) → list[NamedDashboard], call:store.list_dashboards, call:NamedDashboard, func:get_dashboard_by_slug(slug: str, store) → NamedDashboard, call:store.get_dashboard_by_slug, call:NamedDashboard, raise:HTTPException, func:create_dashboard(body: NamedDashboardInput, store) → NamedDashboard, call:store.upsert_dashboard, call:body.model_dump, call:NamedDashboard, func:update_dashboard(dashboard_id: str, body: NamedDashboardInput, store) → NamedDashboard, call:store.get_dashboard, call:store.upsert_dashboard, call:body.model_dump, call:NamedDashboard, raise:HTTPException, func:delete_dashboard(dashboard_id: str, store) → dict[str, str], call:store.get_dashboard, call:store.delete_dashboard, raise:HTTPException | dep: fastapi, media_library_viewer_api.dependencies, media_library_viewer_api.models.dashboards, media_library_viewer_api.services.settings_store
 - files.py | FastAPI router providing endpoints for remote file operations including directory listing, ffprobe media analysis, stat, and path resolution via SSH. | exp: func:list_directory(path, ssh) → dict[str, Any], call:ssh.list_dir, call:logger.warning, call:json.loads, call:logger.info, call:len, raise:HTTPException, func:get_ffprobe(path, ssh) → dict[str, Any], call:ssh.ffprobe_json, call:logger.warning, call:logger.info, raise:HTTPException, func:get_stat(path, ssh) → dict[str, str], call:ssh.stat_path, call:logger.warning, call:logger.info, raise:HTTPException, func:resolve_path(path) → dict[str, str], call:get_settings, call:resolve_remote_media_path, call:logger.info | dep: json, logging, typing, fastapi, media_library_viewer_api.clients.ssh, media_library_viewer_api.config, media_library_viewer_api.dependencies, media_library_viewer_api.path_utils
+- jellyseerr.py | FastAPI router that resolves a Jellyfin service instance and delegates to the Jellyseerr stats provider to return request counts and recent requests. | exp: func:_serialize(result) → dict, func:get_jellyseerr_stats(jellyfin_service_id, store) → dict, call:resolve_service_record, call:get_stats_provider, call:provider.fetch_stats, call:logger.exception, call:_serialize, raise:HTTPException | dep: logging, fastapi, media_library_viewer_api.dependencies, media_library_viewer_api.services.service_resolution, media_library_viewer_api.services.settings_store, media_library_viewer_api.widgets, media_library_viewer_api.widgets.stats_provider, media_library_viewer_api.widgets.jellyseerr_stats
 - jobs.py | FastAPI router that exposes endpoints to list available job templates and execute them on remote paths via SSH. | exp: class:RunJobRequest, func:get_templates() → list[dict[str, str]], call:JOB_TEMPLATES.items, call:logger.info, call:len, func:post_run_job(request: RunJobRequest, ssh) → dict[str, Any], call:logger.warning, call:logger.info, call:run_job, raise:HTTPException | dep: logging, typing, fastapi, pydantic, media_library_viewer_api.clients.ssh, media_library_viewer_api.dependencies, media_library_viewer_api.jobs
 - media.py | FastAPI router providing endpoints to manage media index lifecycle operations including status checks, building (via subprocess workers), stopping, force-stopping, and querying the media library index. | exp: func:get_media_index() → MediaIndex, call:MediaIndex, func:_set_build_metadata(index: MediaIndex, state: dict[str, Any]) → None, call:state.items, call:index.set_metadata, func:_staging_db_path(index: MediaIndex) → Path, call:index.db_path.with_name, func:_pid_is_alive(pid: int | None) → bool, call:os.kill, func:_clean_stale_build_state(index: MediaIndex) → Any, call:index.status, call:_pid_is_alive, call:logger.warning, call:_set_build_metadata, func:_serialize_status(status: Any) → dict[str, Any], func:_worker_command(final_db_path: Path, staging_db_path: Path, service_id) → list[str], call:str, func:_start_worker(index: MediaIndex, service_id) → subprocess.Popen[bytes], call:_staging_db_path, call:staging_path.unlink, call:subprocess.Popen, call:_worker_command, call:os.environ.copy, func:get_index_status(index) → dict[str, Any], call:_clean_stale_build_state, call:logger.info, call:_serialize_status, func:post_build_index(jellyfin_service_id, index) → dict[str, Any], call:_clean_stale_build_state, call:_pid_is_alive, call:logger.warning, call:logger.info, call:_start_worker, call:_set_build_metadata, call:index.status, call:record_media_index_build, call:_serialize_status, raise:HTTPException, func:stop_build(index) → dict[str, Any], call:_clean_stale_build_state, call:logger.warning, call:logger.info, call:_set_build_metadata, call:index.status, call:_serialize_status, raise:HTTPException, func:force_stop_build(index) → dict[str, Any], call:_clean_stale_build_state, call:logger.warning, call:_pid_is_alive, call:_set_build_metadata, call:index.status, call:_serialize_status, call:logger.info, call:os.killpg, call:time.time, call:time.sleep, call:record_media_index_build, raise:HTTPException, func:query_media(libraries, types, search, hdr_filter, sort_key, sort_order, limit, offset, jellyfin_service_id, client, user_id, index) → dict[str, Any], call:lid.strip, call:libraries.split, call:client.libraries, call:t.strip, call:types.split, call:logger.info, call:len, call:",".join, call:index.query | dep: logging, os, signal, subprocess, sys, threading, time, pathlib, typing, fastapi, media_library_viewer_api.clients.jellyfin, media_library_viewer_api.dependencies, media_library_viewer_api.observability, media_library_viewer_api.services.media_index
-- monitoring.py | FastAPI router providing monitoring observability endpoints that proxy and aggregate status, alerts, and scrape targets from Alertmanager and Prometheus. | exp: func:_base_url(service: ServiceRecord) → str, call:str(service.config.get("base_url") or "").rstrip, call:service.config.get, func:_timeout(service: ServiceRecord, default: int) → int, call:int, call:service.config.get, func:_auth_headers(service: ServiceRecord) → dict[str, str], call:str, call:service.secrets.get, func:_status_response(service: ServiceRecord | None, version, error) → dict[str, Any], func:_summary_from_alerts(alerts: list[dict[str, Any]]) → dict[str, Any], call:summarize_alerts, func:get_machines(store) → list[dict[str, Any]], call:store.list_machines, call:m.get, func:get_prometheus_targets(store) → list[dict[str, Any]], call:build_node_exporter_targets, call:logger.info, call:len, func:get_alertmanager_alerts(service_id, store) → dict[str, Any], call:resolve_service_record, call:requests.get, call:_base_url, call:_auth_headers, call:_timeout, call:response.raise_for_status, call:response.json, call:logger.exception, call:data.get, call:_summary_from_alerts, call:logger.info, func:get_alertmanager_status(service_id, store) → dict[str, Any], call:resolve_service_record, call:requests.get, call:_base_url, call:_auth_headers, call:_timeout, call:response.raise_for_status, call:response.json, call:logger.exception, call:data.get("versionInfo", {}).get, call:status.get, call:p.get, call:cluster.get, func:get_prometheus_status(service_id, store) → dict[str, Any], call:resolve_service_record, call:_status_response, call:_base_url, call:_timeout, call:_auth_headers, call:requests.get, call:health.raise_for_status, call:build_info.raise_for_status, call:build_info.json().get("data", {}).get, call:logger.exception, func:receive_alertmanager_webhook(payload) → dict[str, str], call:payload.get, call:logger.info, call:len | dep: logging, typing, requests, fastapi, media_library_viewer_api.dependencies, media_library_viewer_api.services.service_resolution, media_library_viewer_api.services.settings_store, media_library_viewer_api.services.targets, media_library_viewer_api.widgets.sources, media_library_viewer_api.integrations.alertmanager
-- services.py | Provides REST API endpoints for managing service instances in a service registry, including listing service types and CRUD operations for instances while ensuring plaintext secrets are never exposed. | exp: func:_to_type_info(service_type: str) → ServiceTypeInfo, call:require_service_definition, call:ServiceTypeInfo, call:SecretFieldInfo, call:WidgetKindInfo, func:_to_instance(row: dict[str, Any]) → ServiceInstance, call:get_service_definition, call:set, call:row.get, call:bool, call:ServiceInstance, func:_validate_input(body: ServiceInstanceInput) → None, call:get_service_definition, call:validate_config, call:set, raise:HTTPException, func:list_types() → list[ServiceTypeInfo], call:_to_type_info, call:sorted, func:list_instances(service_type, store) → list[ServiceInstance], call:store.list_services, call:_to_instance, func:create_instance(body: ServiceInstanceInput, store) → ServiceInstance, call:_validate_input, call:store.upsert_service, call:_to_instance, func:update_instance(service_id: str, body: ServiceInstanceInput, store) → ServiceInstance, call:store.get_service, call:_validate_input, call:store.upsert_service, call:_to_instance, raise:HTTPException, func:delete_instance(service_id: str, store) → dict[str, str], call:store.get_service, call:store.delete_service, raise:HTTPException | dep: logging, typing, fastapi, media_library_viewer_api.dependencies, media_library_viewer_api.integrations.base, media_library_viewer_api.integrations.registry, media_library_viewer_api.models.services, media_library_viewer_api.services.settings_store
+- monitoring.py | FastAPI router providing observability endpoints for monitoring machines, Alertmanager alerts/status, Prometheus targets/status, and webhook ingestion. | exp: func:_base_url(service: ServiceRecord) → str, call:str(service.config.get("base_url") or "").rstrip, call:service.config.get, func:_timeout(service: ServiceRecord, default: int) → tuple[float, float], call:int, call:service.config.get, call:http_timeout, func:_auth_headers(service: ServiceRecord) → dict[str, str], call:str, call:service.secrets.get, func:_status_response(service: ServiceRecord | None, version, error) → dict[str, Any], func:_summary_from_alerts(alerts: list[dict[str, Any]]) → dict[str, Any], call:summarize_alerts, func:get_machines(store) → list[dict[str, Any]], call:store.list_machines, call:m.get, func:get_prometheus_targets(store) → list[dict[str, Any]], call:build_node_exporter_targets, call:logger.info, call:len, func:get_alertmanager_alerts(service_id, store) → dict[str, Any], call:resolve_service_record, call:requests.get, call:_base_url, call:_auth_headers, call:_timeout, call:response.raise_for_status, call:response.json, call:logger.exception, call:data.get, call:_summary_from_alerts, call:logger.info, func:get_alertmanager_status(service_id, store) → dict[str, Any], call:resolve_service_record, call:requests.get, call:_base_url, call:_auth_headers, call:_timeout, call:response.raise_for_status, call:response.json, call:logger.exception, call:data.get("versionInfo", {}).get, call:status.get, call:p.get, call:cluster.get, func:get_prometheus_status(service_id, store) → dict[str, Any], call:resolve_service_record, call:_status_response, call:str(service.config.get("grafana_url") or "").rstrip, call:service.config.get, call:service.secrets.get, call:int, call:requests.post, call:http_timeout, call:resp.raise_for_status, call:logger.exception, func:receive_alertmanager_webhook(payload) → dict[str, str], call:payload.get, call:logger.info, call:len | dep: logging, typing, requests, fastapi, media_library_viewer_api.clients.http_timeout, media_library_viewer_api.dependencies, media_library_viewer_api.services.service_resolution, media_library_viewer_api.services.settings_store, media_library_viewer_api.services.targets, media_library_viewer_api.widgets.sources, media_library_viewer_api.integrations.alertmanager, fastapi.APIRouter
+- services.py | Provides REST API endpoints for listing service types and performing CRUD operations on service instances, including validation and connectivity testing. | exp: func:_to_type_info(service_type: str) → ServiceTypeInfo, call:require_service_definition, call:ServiceTypeInfo, call:SecretFieldInfo, call:WidgetKindInfo, func:_to_instance(row: dict[str, Any]) → ServiceInstance, call:get_service_definition, call:set, call:row.get, call:bool, call:ServiceInstance, func:_validate_input(body: ServiceInstanceInput) → None, call:get_service_definition, call:validate_config, call:set, raise:HTTPException, func:list_types() → list[ServiceTypeInfo], call:_to_type_info, call:sorted, func:list_instances(service_type, store) → list[ServiceInstance], call:store.list_services, call:_to_instance, func:create_instance(body: ServiceInstanceInput, store) → ServiceInstance, call:_validate_input, call:store.upsert_service, call:_to_instance, func:update_instance(service_id: str, body: ServiceInstanceInput, store) → ServiceInstance, call:store.get_service, call:_validate_input, call:store.upsert_service, call:_to_instance, raise:HTTPException, func:delete_instance(service_id: str, store) → dict[str, str], call:store.get_service, call:store.delete_service, raise:HTTPException, func:test_instance(body: ServiceInstanceInput, store) → dict[str, Any], call:_validate_input, call:require_service_definition, call:logger.info, call:definition.test_callable, call:logger.exception, call:TestResult | dep: logging, typing, fastapi, media_library_viewer_api.dependencies, media_library_viewer_api.integrations.base, media_library_viewer_api.integrations.registry, media_library_viewer_api.models.services, media_library_viewer_api.services.settings_store
 - settings.py | FastAPI router for managing machine definitions, SSH keys, SSH connection validation, and local database resets. | exp: class:MonitoringMachineInput, class:SSHKeyInput, class:SSHKeyGenerateInput, class:ResetLocalDatabaseInput, func:get_machines(store) → list[dict[str, Any]], call:store.list_machines, func:_resolve_ssh_client(machine: MonitoringMachineInput, store: SettingsStore) → tuple[RemoteSSHClient, str, int], call:machine.host.strip, call:machine.username.strip, call:int, call:store.get_ssh_key, call:str, call:ssh_key.get, call:get_settings, call:RemoteSSHClient, raise:HTTPException, func:_raise_ssh_validation_error(host: str, port: int, exc: Exception) → None, call:str, call:message.lower, raise:HTTPException, func:_validate_saved_machine_ssh(machine: MonitoringMachineInput, store: SettingsStore) → None, call:str(machine.mode or "").strip().lower, call:_resolve_ssh_client, call:client.connect, call:_raise_ssh_validation_error, call:client.close, func:test_machine_ssh(machine: MonitoringMachineInput, store) → dict[str, Any], call:str(machine.mode or "").strip().lower, call:_resolve_ssh_client, call:get_settings, call:has_known_host, call:client.connect, call:message.lower, call:client.close, raise:HTTPException, func:post_machine(machine: MonitoringMachineInput, store) → dict[str, Any], call:store.upsert_machine, call:machine.model_dump, call:MonitoringMachineInput.model_validate, call:_validate_saved_machine_ssh, func:put_machine(machine_id: str, machine: MonitoringMachineInput, store) → dict[str, Any], call:store.get_machine, call:store.upsert_machine, call:machine.model_dump, call:MonitoringMachineInput.model_validate, call:_validate_saved_machine_ssh, raise:HTTPException, func:delete_machine(machine_id: str, store) → dict[str, str], call:store.get_machine, call:store.delete_machine, raise:HTTPException, func:generate_ssh_key(payload: SSHKeyGenerateInput) → dict[str, Any], call:paramiko.RSAKey.generate, call:StringIO, call:key.write_private_key, call:private_buffer.getvalue, call:key.get_name, call:key.get_base64, call:":".join, call:key.get_fingerprint, func:get_ssh_keys(store) → list[dict[str, Any]], call:store.list_ssh_keys, func:post_ssh_key(key: SSHKeyInput, store) → dict[str, Any], call:store.upsert_ssh_key, call:key.model_dump, func:put_ssh_key(key_id: str, key: SSHKeyInput, store) → dict[str, Any], call:store.get_ssh_key, call:store.upsert_ssh_key, call:key.model_dump, raise:HTTPException, func:delete_ssh_key(key_id: str, store) → dict[str, str], call:store.get_ssh_key, call:store.delete_ssh_key, raise:HTTPException, func:reset_local_database(payload: ResetLocalDatabaseInput, store) → dict[str, Any], call:payload.confirm_phrase.strip().upper, call:remove_sqlite_database, call:MediaIndex, call:bool, raise:HTTPException | dep: logging, io, typing, paramiko, fastapi, pydantic, media_library_viewer_api.clients.ssh, media_library_viewer_api.config, media_library_viewer_api.dependencies, media_library_viewer_api.services.db_maintenance, media_library_viewer_api.services.known_hosts, media_library_viewer_api.services.media_index, media_library_viewer_api.services.settings_store
 - tasks.py | FastAPI router providing CRUD endpoints and execution for saved server tasks with SSH service resolution | exp: class:TaskInput, class:RunTaskRequest, func:_service_label(service: dict[str, Any] | None) → str, call:str, call:service.get, func:_resolve_service_for_task(store: SettingsStore, task: dict[str, Any], service_id: str | None) → dict[str, Any] | None, call:store.get_service, call:str(task.get("default_service_id") or "").strip, call:task.get, call:store.list_services, call:svc.get, func:_service_row_to_record(service_row: dict[str, Any]) → ServiceRecord, call:build_service_record, call:get_settings_store, func:list_tasks(store) → list[dict[str, Any]], call:store.list_tasks, func:create_task(task: TaskInput, store) → dict[str, Any], call:store.upsert_task, call:task.model_dump, func:update_task(task_id: str, task: TaskInput, store) → dict[str, Any], call:store.get_task, call:store.upsert_task, call:task.model_dump, raise:HTTPException, func:delete_task(task_id: str, store) → dict[str, str], call:store.get_task, call:store.delete_task, raise:HTTPException, func:list_task_runs(task_id: str, limit, store) → dict[str, Any], call:store.get_task, call:store.list_service_task_runs, call:len, raise:HTTPException, func:run_task(request: RunTaskRequest, service_id, store) → dict[str, Any], call:store.get_task, call:task.get, call:_resolve_service_for_task, call:service_row.get, call:_service_row_to_record, call:run_saved_task, call:_service_label, raise:HTTPException | dep: logging, typing, fastapi, pydantic, media_library_viewer_api.dependencies, media_library_viewer_api.services.settings_store, media_library_viewer_api.services.task_runner, media_library_viewer_api.widgets.sources
-- widgets.py | Provides a FastAPI REST API for managing dashboard widget instances and their references, including CRUD operations, data fetching, and live-link detachments. | exp: class:WidgetReferenceCreate, func:_validate_widget_input(body: WidgetInstanceInput, store: SettingsStore) → None, call:store.get_service, call:get_service_definition, call:definition.widget_kind, call:validate_config, call:is_builtin_kind, call:validate_builtin_config, raise:HTTPException, func:list_builtin_kinds() → list[BuiltinWidgetKindInfo], call:BuiltinWidgetKindInfo, call:BUILTIN_WIDGET_KINDS.values, func:list_instances(service_id, scope, store) → list[dict[str, Any]], call:WidgetInstance(**widget).model_dump, call:store.list_widgets, func:create_instance(body: WidgetInstanceInput, store) → dict[str, Any], call:_validate_widget_input, call:store.upsert_widget, call:body.model_dump, call:WidgetInstance(**widget).model_dump, func:update_instance(widget_id: str, body: WidgetInstanceInput, store) → dict[str, Any], call:store.get_widget, call:_validate_widget_input, call:store.upsert_widget, call:body.model_dump, call:WidgetInstance(**widget).model_dump, raise:HTTPException, func:delete_instance(widget_id: str, store) → dict[str, str], call:store.get_widget, call:store.delete_widget, raise:HTTPException, func:fetch_data(widget_id: str, store) → dict[str, Any], call:store.get_widget, call:widget.get, call:store.get_service, call:WidgetDataResponse( widget_id=widget_id, error=f"Service {service_id} not found", fetched_at=int(time.time()), ).model_dump, call:int, call:time.time, call:service_row.get, call:WidgetDataResponse( widget_id=widget_id, error="Service is disabled", fetched_at=int(time.time()), ).model_dump, call:get_service_adapter, call:WidgetDataResponse( widget_id=widget_id, error=f"No adapter for service type {service_row['service_type']}", fetched_at=int(time.time()), ).model_dump, call:build_service_record, call:get_builtin_adapter, call:WidgetDataResponse( widget_id=widget_id, error=f"Unknown built-in widget kind: {widget_kind}", fetched_at=int(time.time()), ).model_dump, call:adapter.fetch, call:logger.exception, call:WidgetDataResponse( widget_id=widget_id, data=data if "error" not in data else None, error=data.get("error"), fetched_at=int(time.time()), ).model_dump, call:data.get, raise:HTTPException, func:list_references(dashboard_scope: str, store) → list[dict[str, Any]], call:store.list_widget_references, func:create_reference(body: WidgetReferenceCreate, store) → dict[str, Any], call:store.create_widget_reference, raise:HTTPException, func:delete_reference(reference_id: str, store) → dict[str, str], call:store.delete_widget_reference, func:update_reference(reference_id: str, sort_order: int, store) → dict[str, Any], call:store.update_widget_reference, raise:HTTPException, func:detach_reference(reference_id: str, store) → dict[str, Any], call:store.detach_widget_reference, call:WidgetInstance(**cloned).model_dump, raise:HTTPException | dep: logging, time, typing, fastapi, pydantic, media_library_viewer_api.dependencies, media_library_viewer_api.integrations.base, media_library_viewer_api.integrations.registry, media_library_viewer_api.models.widgets, media_library_viewer_api.services.settings_store, media_library_viewer_api.widgets.builtin, media_library_viewer_api.widgets.sources
+- widgets.py | Provides a FastAPI REST API for CRUD operations on dashboard widget instances and widget references (live-links), including data fetching through registered adapters. | exp: class:WidgetReferenceCreate, func:_validate_widget_input(body: WidgetInstanceInput, store: SettingsStore) → None, call:store.get_service, call:get_service_definition, call:definition.widget_kind, call:validate_config, call:is_builtin_kind, call:validate_builtin_config, raise:HTTPException, func:list_builtin_kinds() → list[BuiltinWidgetKindInfo], call:BuiltinWidgetKindInfo, call:BUILTIN_WIDGET_KINDS.values, func:list_instances(service_id, scope, store) → list[dict[str, Any]], call:WidgetInstance(**widget).model_dump, call:store.list_widgets, func:create_instance(body: WidgetInstanceInput, store) → dict[str, Any], call:_validate_widget_input, call:store.upsert_widget, call:body.model_dump, call:WidgetInstance(**widget).model_dump, func:update_instance(widget_id: str, body: WidgetInstanceInput, store) → dict[str, Any], call:store.get_widget, call:_validate_widget_input, call:store.upsert_widget, call:body.model_dump, call:WidgetInstance(**widget).model_dump, raise:HTTPException, func:delete_instance(widget_id: str, store) → dict[str, str], call:store.get_widget, call:store.delete_widget, raise:HTTPException, func:fetch_data(widget_id: str, store) → dict[str, Any], call:store.get_widget, call:widget.get, call:store.get_service, call:WidgetDataResponse( widget_id=widget_id, error=f"Service {service_id} not found", fetched_at=int(time.time()), ).model_dump, call:int, call:time.time, call:service_row.get, call:WidgetDataResponse( widget_id=widget_id, error="Service is disabled", fetched_at=int(time.time()), ).model_dump, call:get_stats_adapter, call:get_service_adapter, call:WidgetDataResponse( widget_id=widget_id, error=f"No adapter for service type {service_row['service_type']}", fetched_at=int(time.time()), ).model_dump, call:build_service_record, call:get_builtin_adapter, call:WidgetDataResponse( widget_id=widget_id, error=f"Unknown built-in widget kind: {widget_kind}", fetched_at=int(time.time()), ).model_dump, call:adapter.fetch, call:logger.exception, call:WidgetDataResponse( widget_id=widget_id, data=data if "error" not in data else None, error=data.get("error"), fetched_at=int(time.time()), ).model_dump, call:data.get, raise:HTTPException, func:list_references(dashboard_scope: str, store) → list[dict[str, Any]], call:store.list_widget_references, func:create_reference(body: WidgetReferenceCreate, store) → dict[str, Any], call:store.create_widget_reference, raise:HTTPException, func:delete_reference(reference_id: str, store) → dict[str, str], call:store.delete_widget_reference, func:update_reference(reference_id: str, sort_order: int, store) → dict[str, Any], call:store.update_widget_reference, raise:HTTPException, func:detach_reference(reference_id: str, store) → dict[str, Any], call:store.detach_widget_reference, call:WidgetInstance(**cloned).model_dump, raise:HTTPException | dep: logging, time, typing, fastapi, pydantic, media_library_viewer_api.dependencies, media_library_viewer_api.integrations.base, media_library_viewer_api.integrations.registry, media_library_viewer_api.models.widgets, media_library_viewer_api.services.settings_store, media_library_viewer_api.widgets.builtin, media_library_viewer_api.widgets.sources
 ## arch
-Modular FastAPI APIRouter pattern where each domain module exports its own router instance; routers encapsulate endpoint definitions and delegate business logic to underlying service clients, SSH utilities, and subprocess workers.
+Modular router-per-domain pattern where each file defines an isolated FastAPI APIRouter for a specific functional area, enabling independent endpoint registration, dependency injection, and delegation to underlying service clients and providers.
 ## tags
-call:, raise:httpexception, service, backup, get, media_library_viewer_api, ssh, call:store.get
+call:, raise:httpexception, service, media_library_viewer_api, backup, get, ssh, call:logger.info
 ## symbols
 - MessageRequest
 - RunJobRequest

backend/src/media_library_viewer_api/routers/jellyseerr.py

@@ -0,0 +1,52 @@
+"""Jellyseerr request stats — powers the Requests tab on the Jellyfin page.
+
+Jellyseerr is an optional companion of the Jellyfin service. This router
+resolves the Jellyfin service instance (by ``jellyfin_service_id`` or the first
+enabled one) and delegates to the registered Jellyseerr stats provider, which
+shares its short-TTL cache with the ``stat`` / ``stats_overview`` widgets so
+the tab and the widgets don't each hit Jellyseerr.
+"""
+
+from __future__ import annotations
+
+import logging
+
+from fastapi import APIRouter, Depends, HTTPException
+
+from media_library_viewer_api.dependencies import get_settings_store
+from media_library_viewer_api.services.service_resolution import resolve_service_record
+from media_library_viewer_api.services.settings_store import SettingsStore
+from media_library_viewer_api.widgets import jellyseerr_stats  # noqa: F401 — ensure provider registration
+from media_library_viewer_api.widgets.stats_provider import get_stats_provider
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/api/jellyseerr", tags=["jellyseerr"])
+
+
+def _serialize(result) -> dict:
+    return {
+        "stats": [{"key": s.key, "label": s.label, "value": s.value} for s in result.stats],
+        "recent": result.recent,
+        "detail": result.detail,
+    }
+
+
+@router.get("/stats")
+def get_jellyseerr_stats(
+    jellyfin_service_id: str | None = None,
+    store: SettingsStore = Depends(get_settings_store),
+) -> dict:
+    """Return Jellyseerr request counts + a recent-requests list."""
+    service = resolve_service_record(store, "jellyfin", jellyfin_service_id)
+    if service is None:
+        raise HTTPException(status_code=503, detail="No Jellyfin service is configured.")
+    provider = get_stats_provider("jellyfin")
+    if provider is None:  # pragma: no cover - registered at import
+        raise HTTPException(status_code=503, detail="Jellyseerr stats provider is not available.")
+    try:
+        result = provider.fetch_stats(service)
+    except Exception as exc:  # pragma: no cover - provider guards internally
+        logger.exception("Jellyseerr stats endpoint failed")
+        raise HTTPException(status_code=502, detail=f"Jellyseerr fetch failed: {exc}") from exc
+    return _serialize(result)

backend/src/media_library_viewer_api/routers/widgets.py

@@ -33,6 +33,7 @@ from media_library_viewer_api.widgets.sources import (
     build_service_record,
     get_builtin_adapter,
     get_service_adapter,
+    get_stats_adapter,
 )
 
 
@@ -199,7 +200,11 @@ async def fetch_data(
                 error="Service is disabled",
                 fetched_at=int(time.time()),
             ).model_dump()
-        adapter = get_service_adapter(service_row["service_type"])
+        adapter = (
+            get_stats_adapter()
+            if widget_kind in ("stat", "stats_overview")
+            else get_service_adapter(service_row["service_type"])
+        )
         if adapter is None:
             return WidgetDataResponse(
                 widget_id=widget_id,