feat(reports): per-project report config + automatic morning run

Add SoundReportConfig (one row per project) + the scheduler tick that runs the
nightly report on its own:
- model SoundReportConfig (enabled, report_time, metric_keys, baseline range,
  recipients, last_run_date) — new table, auto-created by create_all (no migration).
- GET/PUT /api/projects/{id}/reports/config with validation.
- SchedulerService.run_due_reports(): each loop, for every enabled config past
  its report_time, run last night's report once (dedup via last_run_date),
  writing the file + emailing (dry-run until SMTP is set).
- UI: gear button beside "Night Report" opens a settings modal (enable, time,
  baseline range, metrics, recipients) that GET/PUTs the config.

Verified: table registers + auto-creates, config CRUD + validation, tick
runs/dedups, templates render and gate to sound projects.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

backend/services/scheduler.py

@@ -78,6 +78,9 @@ class SchedulerService:
                 # Execute pending actions
                 await self.execute_pending_actions()
 
+                # Run any due nightly sound reports (FTP report pipeline)
+                await self.run_due_reports()
+
                 # Generate actions from recurring schedules (every hour)
                 now = datetime.utcnow()
                 if (now - last_generation_check).total_seconds() >= 3600:
@@ -782,6 +785,66 @@ class SchedulerService:
 
         return cleaned
 
+    # ========================================================================
+    # Nightly Sound Report (FTP report pipeline)
+    # ========================================================================
+
+    async def run_due_reports(self):
+        """Run any project nightly sound reports that are due.
+
+        For each enabled SoundReportConfig: if local time is past report_time
+        and we haven't already reported last night, build the report (writes a
+        file always; emails if SMTP is configured, else dry-run) and stamp
+        last_run_date.  Idempotent across restarts via last_run_date.
+        """
+        from backend.models import SoundReportConfig
+        from backend.services.report_orchestrator import run_nightly_report
+        from backend.utils.timezone import utc_to_local
+
+        db = SessionLocal()
+        try:
+            configs = db.query(SoundReportConfig).filter_by(enabled=True).all()
+            if not configs:
+                return
+
+            local_now = utc_to_local(datetime.utcnow())
+            night_date = local_now.date() - timedelta(days=1)   # last night's evening date
+
+            for cfg in configs:
+                try:
+                    # Past the configured local report time (HH:MM)?
+                    try:
+                        hh, mm = (int(x) for x in cfg.report_time.split(":"))
+                    except (ValueError, AttributeError):
+                        hh, mm = 8, 0
+                    due = (local_now.hour, local_now.minute) >= (hh, mm)
+                    if not due or cfg.last_run_date == night_date:
+                        continue
+
+                    metric_keys = [m.strip() for m in (cfg.metric_keys or "").split(",") if m.strip()] or None
+                    recipients = [r.strip() for r in (cfg.recipients or "").split(",") if r.strip()] or None
+
+                    logger.info(f"[REPORT] Running nightly report for project {cfg.project_id} (night {night_date})")
+                    result = run_nightly_report(
+                        db, cfg.project_id, night_date,
+                        metric_keys=metric_keys,
+                        baseline_start=cfg.baseline_start,
+                        baseline_end=cfg.baseline_end,
+                        recipients=recipients,
+                    )
+                    cfg.last_run_date = night_date
+                    db.commit()
+                    email = result.get("email", {})
+                    logger.info(
+                        f"[REPORT] project {cfg.project_id}: {result.get('location_count')} location(s); "
+                        f"email={'sent' if email.get('sent') else ('dry-run' if email.get('dry_run') else (email.get('error') or 'skipped'))}"
+                    )
+                except Exception as e:
+                    logger.error(f"[REPORT] Failed nightly report for project {cfg.project_id}: {e}", exc_info=True)
+                    db.rollback()
+        finally:
+            db.close()
+
     # ========================================================================
     # Manual Execution (for testing/debugging)
     # ========================================================================