From 85b211e532103b35c9d81368dd5558597197b325 Mon Sep 17 00:00:00 2001
From: serversdwn <brianharrison02@gmail.com>
Date: Mon, 5 Jan 2026 18:56:20 +0000
Subject: [PATCH 1/2] bugfix: unit status updating based on last heard, not
 just using cached status

---
 backend/services/snapshot.py | 41 ++++++++++++++++++++++++++++++++++--
 1 file changed, 39 insertions(+), 2 deletions(-)

diff --git a/backend/services/snapshot.py b/backend/services/snapshot.py
index 7c737b7..4a6cd38 100644
--- a/backend/services/snapshot.py
+++ b/backend/services/snapshot.py
@@ -24,13 +24,47 @@ def format_age(last_seen):
     return f"{int(hours)}h {int(mins)}m"
 
 
+def calculate_status(last_seen, status_ok_threshold=12, status_pending_threshold=24):
+    """
+    Calculate status based on how long ago the unit was last seen.
+
+    Args:
+        last_seen: datetime of last seen (UTC)
+        status_ok_threshold: hours before status becomes Pending (default 12)
+        status_pending_threshold: hours before status becomes Missing (default 24)
+
+    Returns:
+        "OK", "Pending", or "Missing"
+    """
+    if not last_seen:
+        return "Missing"
+
+    last_seen = ensure_utc(last_seen)
+    now = datetime.now(timezone.utc)
+    hours_ago = (now - last_seen).total_seconds() / 3600
+
+    if hours_ago > status_pending_threshold:
+        return "Missing"
+    elif hours_ago > status_ok_threshold:
+        return "Pending"
+    else:
+        return "OK"
+
+
 def emit_status_snapshot():
     """
     Merge roster (what we *intend*) with emitter data (what is *actually happening*).
+    Status is recalculated based on current time to ensure accuracy.
     """
 
     db = get_db_session()
     try:
+        # Get user preferences for status thresholds
+        from backend.models import UserPreferences
+        prefs = db.query(UserPreferences).filter_by(id=1).first()
+        status_ok_threshold = prefs.status_ok_threshold_hours if prefs else 12
+        status_pending_threshold = prefs.status_pending_threshold_hours if prefs else 24
+
         roster = {r.id: r for r in db.query(RosterUnit).all()}
         emitters = {e.id: e for e in db.query(Emitter).all()}
         ignored = {i.id for i in db.query(IgnoredUnit).all()}
@@ -48,8 +82,9 @@ def emit_status_snapshot():
                 fname = ""
             else:
                 if e:
-                    status = e.status
                     last_seen = ensure_utc(e.last_seen)
+                    # RECALCULATE status based on current time, not stored value
+                    status = calculate_status(last_seen, status_ok_threshold, status_pending_threshold)
                     age = format_age(last_seen)
                     fname = e.last_file
                 else:
@@ -86,9 +121,11 @@ def emit_status_snapshot():
         for unit_id, e in emitters.items():
             if unit_id not in roster:
                 last_seen = ensure_utc(e.last_seen)
+                # RECALCULATE status for unknown units too
+                status = calculate_status(last_seen, status_ok_threshold, status_pending_threshold)
                 units[unit_id] = {
                     "id": unit_id,
-                    "status": e.status,
+                    "status": status,
                     "age": format_age(last_seen),
                     "last": last_seen.isoformat(),
                     "fname": e.last_file,
-- 
2.49.1


From 96cb27ef83b8d5812c305c982fb58b7ffd4deaec Mon Sep 17 00:00:00 2001
From: serversdwn <brianharrison02@gmail.com>
Date: Mon, 5 Jan 2026 19:00:49 +0000
Subject: [PATCH 2/2] v0.4.1

---
 CHANGELOG.md | 8 ++++++++
 README.md    | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 99ff90c..a2bedec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,14 @@ All notable changes to Seismo Fleet Manager will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.4.1] - 2026 1-5
+### Added
+- **SLM integration**: Sound Level meters are now managable in SFM
+
+## Fixed ##
+- Fixed an issue where unit status wat loading from a saved cache and not based on when it was actually heard from last. Unit status is now accurate.
+
+
 ## [0.4.0] - 2025-12-16
 
 ### Added
diff --git a/README.md b/README.md
index 3451713..513e01b 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Seismo Fleet Manager v0.4.0
+# Seismo Fleet Manager v0.4.1
 Backend API and HTMX-powered web interface for managing a mixed fleet of seismographs and field modems. Track deployments, monitor health in real time, merge roster intent with incoming telemetry, and control your fleet through a unified database and dashboard.
 
 ## Features
-- 
2.49.1