diff --git a/lib/mix/tasks/backfill_checks.ex b/lib/mix/tasks/backfill_checks.ex
index 08c726b8..24f3642e 100644
--- a/lib/mix/tasks/backfill_checks.ex
+++ b/lib/mix/tasks/backfill_checks.ex
@@ -20,8 +20,6 @@ defmodule Mix.Tasks.Backfill.Checks do
   alias Towerops.Repo
   alias Towerops.Snmp.Discovery
 
-  require Logger
-
   @impl Mix.Task
   def run(args) do
     Mix.Task.run("app.start")
diff --git a/lib/mix/tasks/import_profiles.ex b/lib/mix/tasks/import_profiles.ex
index a1b861c0..ae224bac 100644
--- a/lib/mix/tasks/import_profiles.ex
+++ b/lib/mix/tasks/import_profiles.ex
@@ -37,8 +37,6 @@ defmodule Mix.Tasks.ImportProfiles do
   alias Towerops.Profiles.SensorOid
   alias Towerops.Repo
 
-  require Logger
-
   @requirements ["app.start"]
 
   def run(args) do
diff --git a/lib/snmpkit/snmp_lib/asn1.ex b/lib/snmpkit/snmp_lib/asn1.ex
index 3e2a1574..1131aac2 100644
--- a/lib/snmpkit/snmp_lib/asn1.ex
+++ b/lib/snmpkit/snmp_lib/asn1.ex
@@ -487,7 +487,7 @@ defmodule SnmpKit.SnmpLib.ASN1 do
 
   defp decode_long_form_length(data, num_octets) do
     case data do
-      <<length_bytes::binary-size(num_octets), remaining::binary>> ->
+      <<length_bytes::binary-size(^num_octets), remaining::binary>> ->
         length = :binary.decode_unsigned(length_bytes, :big)
         {:ok, {length, remaining}}
 
diff --git a/lib/snmpkit/snmp_lib/host_parser.ex b/lib/snmpkit/snmp_lib/host_parser.ex
index 1e17ee7e..2bba0d27 100644
--- a/lib/snmpkit/snmp_lib/host_parser.ex
+++ b/lib/snmpkit/snmp_lib/host_parser.ex
@@ -32,8 +32,6 @@ defmodule SnmpKit.SnmpLib.HostParser do
   `{:error, reason}` for invalid input
   """
 
-  require Logger
-
   @type ip4_tuple :: {0..255, 0..255, 0..255, 0..255}
   @type ip6_tuple ::
           {0..65_535, 0..65_535, 0..65_535, 0..65_535, 0..65_535, 0..65_535, 0..65_535, 0..65_535}
@@ -130,19 +128,12 @@ defmodule SnmpKit.SnmpLib.HostParser do
     parse_string(input, default_port)
   end
 
-  # Charlist input
-  def parse(input, default_port) when is_list(input) do
-    # Validate charlist contains only valid ASCII/UTF-8 characters
-    if valid_charlist?(input) do
-      try do
-        string_input = List.to_string(input)
-        parse_string(string_input, default_port)
-      rescue
-        # Not a valid charlist
-        _ -> {:error, :invalid_charlist}
-      end
+  # Keyword list input: [host: ..., port: ...]
+  def parse([_ | _] = input, default_port) do
+    if Keyword.keyword?(input) do
+      parse_keyword(input, default_port)
     else
-      {:error, :invalid_charlist}
+      parse_charlist(input, default_port)
     end
   end
 
@@ -156,13 +147,19 @@ defmodule SnmpKit.SnmpLib.HostParser do
     end
   end
 
-  # Keyword list input: [host: ..., port: ...]
-  def parse([_ | _] = input, default_port) when is_list(input) do
-    if Keyword.keyword?(input) do
-      parse_keyword(input, default_port)
+  # Charlist input
+  def parse(input, default_port) when is_list(input) do
+    # Validate charlist contains only valid ASCII/UTF-8 characters
+    if valid_charlist?(input) do
+      try do
+        string_input = List.to_string(input)
+        parse_string(string_input, default_port)
+      rescue
+        # Not a valid charlist
+        _ -> {:error, :invalid_charlist}
+      end
     else
-      # Try as charlist
-      parse_charlist(input, default_port)
+      {:error, :invalid_charlist}
     end
   end
 
diff --git a/lib/snmpkit/snmp_lib/mib/parser.ex b/lib/snmpkit/snmp_lib/mib/parser.ex
index 090d02d8..5d370c0d 100644
--- a/lib/snmpkit/snmp_lib/mib/parser.ex
+++ b/lib/snmpkit/snmp_lib/mib/parser.ex
@@ -666,8 +666,6 @@ defmodule SnmpKit.SnmpLib.MIB.Parser do
     _ -> list
   end
 
-  defp convert_deep_charlist(other), do: other
-
   defp list_of_charlists?(list) do
     Enum.all?(list, fn
       sublist when is_list(sublist) -> charlist?(sublist)
diff --git a/lib/snmpkit/snmp_lib/mib/registry.ex b/lib/snmpkit/snmp_lib/mib/registry.ex
index 0fd91cf0..1eb0ed1e 100644
--- a/lib/snmpkit/snmp_lib/mib/registry.ex
+++ b/lib/snmpkit/snmp_lib/mib/registry.ex
@@ -8,8 +8,6 @@ defmodule SnmpKit.SnmpLib.MIB.Registry do
 
   alias SnmpKit.SnmpLib.OID
 
-  require Logger
-
   @standard_mibs %{
     # System group (1.3.6.1.2.1.1)
     "sysDescr" => [1, 3, 6, 1, 2, 1, 1, 1],
diff --git a/lib/snmpkit/snmp_lib/pdu/decoder.ex b/lib/snmpkit/snmp_lib/pdu/decoder.ex
index fdc0d693..74a555d3 100644
--- a/lib/snmpkit/snmp_lib/pdu/decoder.ex
+++ b/lib/snmpkit/snmp_lib/pdu/decoder.ex
@@ -114,8 +114,6 @@ defmodule SnmpKit.SnmpLib.PDU.Decoder do
     end
   end
 
-  defp peek_version(_), do: {:error, :invalid_data}
-
   @doc """
   Alias for decode/1.
   """
@@ -136,9 +134,6 @@ defmodule SnmpKit.SnmpLib.PDU.Decoder do
          pdu: pdu
        }}
     else
-      {:error, reason} when is_tuple(reason) ->
-        {:error, reason}
-
       {:error, reason} ->
         {:error, {:message_parse_error, reason}}
     end
@@ -159,7 +154,7 @@ defmodule SnmpKit.SnmpLib.PDU.Decoder do
     num_length_bytes = length_of_length - 128
 
     if num_length_bytes > 0 and num_length_bytes <= 4 and byte_size(rest) >= num_length_bytes do
-      <<length_bytes::binary-size(num_length_bytes), remaining::binary>> = rest
+      <<length_bytes::binary-size(^num_length_bytes), remaining::binary>> = rest
       actual_length = :binary.decode_unsigned(length_bytes, :big)
 
       if byte_size(remaining) >= actual_length do
@@ -226,7 +221,7 @@ defmodule SnmpKit.SnmpLib.PDU.Decoder do
     num_length_bytes = length_of_length - 128
 
     if num_length_bytes > 0 and num_length_bytes <= 4 and byte_size(rest) >= num_length_bytes do
-      <<length_bytes::binary-size(num_length_bytes), remaining_with_content::binary>> = rest
+      <<length_bytes::binary-size(^num_length_bytes), remaining_with_content::binary>> = rest
       actual_length = :binary.decode_unsigned(length_bytes, :big)
 
       if byte_size(remaining_with_content) >= actual_length do
diff --git a/lib/snmpkit/snmp_lib/pdu/encoder.ex b/lib/snmpkit/snmp_lib/pdu/encoder.ex
index da7ddff4..11d5c5c9 100644
--- a/lib/snmpkit/snmp_lib/pdu/encoder.ex
+++ b/lib/snmpkit/snmp_lib/pdu/encoder.ex
@@ -76,8 +76,6 @@ defmodule SnmpKit.SnmpLib.PDU.Encoder do
     case encode_pdu_fast(pdu) do
       {:ok, result} when is_binary(result) -> {:ok, result}
       {:error, reason} -> {:error, reason}
-      result when is_binary(result) -> {:ok, result}
-      other -> {:error, {:invalid_pdu_result, other}}
     end
   rescue
     error -> {:error, {:encoding_error, error}}
diff --git a/lib/snmpkit/snmp_lib/types.ex b/lib/snmpkit/snmp_lib/types.ex
index 198e1484..bb9e6454 100644
--- a/lib/snmpkit/snmp_lib/types.ex
+++ b/lib/snmpkit/snmp_lib/types.ex
@@ -940,11 +940,10 @@ defmodule SnmpKit.SnmpLib.Types do
   defp perform_encoding(value, :boolean) when is_boolean(value), do: {:ok, value}
   defp perform_encoding(value, :object_identifier) when is_list(value), do: {:ok, value}
   defp perform_encoding(value, :oid) when is_list(value), do: {:ok, value}
-  defp perform_encoding(_value, :null), do: {:ok, nil}
-  defp perform_encoding(nil, :null), do: {:ok, nil}
-  defp perform_encoding(:null, :null), do: {:ok, nil}
   defp perform_encoding(value, :opaque) when is_binary(value), do: {:ok, value}
 
+  defp perform_encoding(<<a, b, c, d>>, :ip_address), do: {:ok, {a, b, c, d}}
+
   # Handle IP address encoding
   defp perform_encoding(value, :ip_address) when is_binary(value) do
     case parse_ip_address(value) do
@@ -958,8 +957,6 @@ defmodule SnmpKit.SnmpLib.Types do
     {:ok, value}
   end
 
-  defp perform_encoding(<<a, b, c, d>>, :ip_address), do: {:ok, {a, b, c, d}}
-
   # Handle OID string encoding
   defp perform_encoding(value, :object_identifier) when is_binary(value) do
     case OID.string_to_list(value) do
@@ -1022,6 +1019,4 @@ defmodule SnmpKit.SnmpLib.Types do
       end) and length(list) >= 2
     end
   end
-
-  defp oid_list?(_), do: false
 end
diff --git a/lib/snmpkit/snmp_lib/utils.ex b/lib/snmpkit/snmp_lib/utils.ex
index 452408db..6b4f7f6d 100644
--- a/lib/snmpkit/snmp_lib/utils.ex
+++ b/lib/snmpkit/snmp_lib/utils.ex
@@ -59,8 +59,6 @@ defmodule SnmpKit.SnmpLib.Utils do
 
   alias SnmpKit.SnmpLib.Error
 
-  require Logger
-
   @formatting SnmpKit.Formatting
 
   @type oid :: [non_neg_integer()]
@@ -659,16 +657,12 @@ defmodule SnmpKit.SnmpLib.Utils do
     Enum.all?([a, b, c, d], &valid_ipv4_octet?/1)
   end
 
-  defp valid_ip_tuple?(_), do: false
-
   defp valid_ipv4_octet?(n), do: is_integer(n) and n >= 0 and n <= 255
 
   defp valid_ipv6_tuple?({a, b, c, d, e, f, g, h}) do
     Enum.all?([a, b, c, d, e, f, g, h], &valid_ipv6_segment?/1)
   end
 
-  defp valid_ipv6_tuple?(_), do: false
-
   defp valid_ipv6_segment?(n), do: is_integer(n) and n >= 0 and n <= 65_535
 
   defp ipv4_or_simple_hostname?(host_str) do
diff --git a/lib/snmpkit/snmp_lib/walker.ex b/lib/snmpkit/snmp_lib/walker.ex
index 45427271..7927c235 100644
--- a/lib/snmpkit/snmp_lib/walker.ex
+++ b/lib/snmpkit/snmp_lib/walker.ex
@@ -46,8 +46,6 @@ defmodule SnmpKit.SnmpLib.Walker do
   alias SnmpKit.SnmpLib.Manager
   alias SnmpKit.SnmpLib.OID
 
-  require Logger
-
   @default_max_repetitions 30
   @default_timeout 10_000
   @default_max_retries 3
diff --git a/lib/snmpkit/snmp_mgr/core.ex b/lib/snmpkit/snmp_mgr/core.ex
index 280b6232..0a64e0a6 100644
--- a/lib/snmpkit/snmp_mgr/core.ex
+++ b/lib/snmpkit/snmp_mgr/core.ex
@@ -99,12 +99,6 @@ defmodule SnmpKit.SnmpMgr.Core do
       {:ok, {type, value}} ->
         {:ok, {type, value}}
 
-      # Type information must be preserved - reject responses without type information
-      {:ok, value} ->
-        {:error,
-         {:type_information_lost,
-          "SNMP GET operation must preserve type information. Got value without type: #{inspect(value)}"}}
-
       {:error, reason} ->
         {:error, reason}
     end
@@ -150,12 +144,6 @@ defmodule SnmpKit.SnmpMgr.Core do
       {:ok, {type, value}} ->
         {:ok, {oid_string, type, value}}
 
-      {:ok, value} ->
-        # Type information must be preserved - reject responses without type information
-        {:error,
-         {:type_information_lost,
-          "SNMP GET operation must preserve type information. Got value without type for OID #{oid_string}: #{inspect(value)}"}}
-
       {:error, reason} ->
         {:error, reason}
     end
@@ -464,7 +452,6 @@ defmodule SnmpKit.SnmpMgr.Core do
   defp parse_numeric_oid(oid_string) do
     case OID.string_to_list(oid_string) do
       {:ok, [_ | _] = oid_list} -> {:ok, oid_list}
-      {:ok, []} -> {:ok, [1, 3]}
       error -> error
     end
   end
diff --git a/lib/snmpkit/snmp_mgr/mib.ex b/lib/snmpkit/snmp_mgr/mib.ex
index d50b58ca..73878feb 100644
--- a/lib/snmpkit/snmp_mgr/mib.ex
+++ b/lib/snmpkit/snmp_mgr/mib.ex
@@ -12,8 +12,6 @@ defmodule SnmpKit.SnmpMgr.MIB do
   alias SnmpKit.SnmpLib.MIB.Parser
   alias SnmpKit.SnmpLib.OID
 
-  require Logger
-
   @compile {:no_warn_undefined, [:snmpc, :snmp_misc]}
 
   @standard_mibs %{
diff --git a/lib/towerops/application.ex b/lib/towerops/application.ex
index e271ff90..89be362a 100644
--- a/lib/towerops/application.ex
+++ b/lib/towerops/application.ex
@@ -307,11 +307,8 @@ defmodule Towerops.Application do
       # Add the backend with a unique identifier (using apply to avoid compile-time warnings)
       apply(LoggerBackends, :add, [{LoggerFileBackend, :file_log}])
 
-      # Configure the backend with path and level
-      Logger.configure_backend({LoggerFileBackend, :file_log},
-        path: "_build/dev.log",
-        level: :debug
-      )
+      # Use LoggerBackends for modern Elixir (Logger.configure_backend is deprecated)
+      apply(LoggerBackends, :configure, [{LoggerFileBackend, :file_log}, [path: "_build/dev.log", level: :debug]])
     else
       Logger.debug("LoggerBackends not available - file logging disabled (dev-only feature)")
     end
diff --git a/lib/towerops/config_changes/correlator.ex b/lib/towerops/config_changes/correlator.ex
index 55d0bdf1..38e58cae 100644
--- a/lib/towerops/config_changes/correlator.ex
+++ b/lib/towerops/config_changes/correlator.ex
@@ -15,8 +15,6 @@ defmodule Towerops.ConfigChanges.Correlator do
   alias Towerops.Preseem.SubscriberMetric
   alias Towerops.Repo
 
-  require Logger
-
   @pre_window_hours 2
   @post_window_hours 4
 
diff --git a/lib/towerops/coverages/raster.ex b/lib/towerops/coverages/raster.ex
index 381bca65..ad5502c7 100644
--- a/lib/towerops/coverages/raster.ex
+++ b/lib/towerops/coverages/raster.ex
@@ -14,8 +14,6 @@ defmodule Towerops.Coverages.Raster do
 
   alias Towerops.Coverages.Coverage
 
-  require Logger
-
   @nan_sentinel 1.0e30
 
   # cnHeat-ish palette: green strong, yellow good, orange marginal, red poor.
diff --git a/lib/towerops/error_tracker_ignorer.ex b/lib/towerops/error_tracker_ignorer.ex
index a200d590..c1c3e2ce 100644
--- a/lib/towerops/error_tracker_ignorer.ex
+++ b/lib/towerops/error_tracker_ignorer.ex
@@ -40,6 +40,4 @@ defmodule Towerops.ErrorTrackerIgnorer do
     String.contains?(binary_kind, "DBConnection.ConnectionError") and
       Enum.any?(@transient_db_phrases, &String.contains?(binary_reason, &1))
   end
-
-  defp transient_db_error?(_), do: false
 end
diff --git a/lib/towerops/lidar/reader.ex b/lib/towerops/lidar/reader.ex
index a16fa0ad..34408a94 100644
--- a/lib/towerops/lidar/reader.ex
+++ b/lib/towerops/lidar/reader.ex
@@ -9,8 +9,6 @@ defmodule Towerops.Lidar.Reader do
 
   alias Towerops.Lidar.Tile
 
-  require Logger
-
   @gdal_bin "gdallocationinfo"
   # GDAL emits this sentinel for nodata in -valonly mode
   @nodata_sentinels ["-3.4028235e+38", "-3.402823466e+38", "-9999"]
diff --git a/lib/towerops/mikrotik/gaiia_resolver.ex b/lib/towerops/mikrotik/gaiia_resolver.ex
index a90eb1fd..c615d438 100644
--- a/lib/towerops/mikrotik/gaiia_resolver.ex
+++ b/lib/towerops/mikrotik/gaiia_resolver.ex
@@ -254,8 +254,6 @@ defmodule Towerops.Mikrotik.GaiiaResolver do
     end)
   end
 
-  defp smush(nil), do: ""
-
   defp smush(s) when is_binary(s) do
     s
     |> String.downcase()
diff --git a/lib/towerops/netbox/client.ex b/lib/towerops/netbox/client.ex
index 957d221f..f5fc59d4 100644
--- a/lib/towerops/netbox/client.ex
+++ b/lib/towerops/netbox/client.ex
@@ -8,8 +8,6 @@ defmodule Towerops.NetBox.Client do
 
   alias Towerops.HTTP
 
-  require Logger
-
   @doc """
   Test connectivity and authentication against a NetBox instance.
   Returns `{:ok, info}` with the NetBox version or `{:error, reason}`.
diff --git a/lib/towerops/preseem/baseline.ex b/lib/towerops/preseem/baseline.ex
index b072d33d..7f3d8d97 100644
--- a/lib/towerops/preseem/baseline.ex
+++ b/lib/towerops/preseem/baseline.ex
@@ -70,8 +70,6 @@ defmodule Towerops.Preseem.Baseline do
     end
   end
 
-  defp compute_stats([]), do: %{mean: 0.0, stddev: 0.0, p5: 0.0, p95: 0.0}
-
   defp compute_stats(values) do
     float_values = Enum.map(values, &to_float/1)
     sorted = Enum.sort(float_values)
diff --git a/lib/towerops/proto/wire.ex b/lib/towerops/proto/wire.ex
index 5ab7c4a3..5504a469 100644
--- a/lib/towerops/proto/wire.ex
+++ b/lib/towerops/proto/wire.ex
@@ -117,7 +117,7 @@ defmodule Towerops.Proto.Wire do
     case decode_varint(data) do
       {:ok, {len, rest}} ->
         if byte_size(rest) >= len do
-          <<field_data::binary-size(len), remaining::binary>> = rest
+          <<field_data::binary-size(^len), remaining::binary>> = rest
           {:ok, {field_data, remaining}}
         else
           {:error, :unexpected_eof}
diff --git a/lib/towerops/reports.ex b/lib/towerops/reports.ex
index 68a1f013..57c74988 100644
--- a/lib/towerops/reports.ex
+++ b/lib/towerops/reports.ex
@@ -14,8 +14,6 @@ defmodule Towerops.Reports do
   alias Towerops.Reports.Report
   alias Towerops.RfLinks
 
-  require Logger
-
   # -- CRUD --
 
   def list_reports(organization_id) do
diff --git a/lib/towerops/snmp/discovery.ex b/lib/towerops/snmp/discovery.ex
index 5879eaf6..7c7f1e7f 100644
--- a/lib/towerops/snmp/discovery.ex
+++ b/lib/towerops/snmp/discovery.ex
@@ -1452,8 +1452,6 @@ defmodule Towerops.Snmp.Discovery do
   defp map_pool_type_to_mempool_type(type), do: type
 
   defp calculate_usage_percent(_used, 0), do: 0.0
-  defp calculate_usage_percent(_used, nil), do: nil
-  defp calculate_usage_percent(nil, _total), do: nil
 
   defp calculate_usage_percent(used, total) when is_integer(used) and is_integer(total) do
     Float.round(used / total * 100.0, 2)
diff --git a/lib/towerops/snmp/mac_discovery.ex b/lib/towerops/snmp/mac_discovery.ex
index 5567a2ee..1229b25c 100644
--- a/lib/towerops/snmp/mac_discovery.ex
+++ b/lib/towerops/snmp/mac_discovery.ex
@@ -9,8 +9,6 @@ defmodule Towerops.Snmp.MacDiscovery do
 
   alias Towerops.Snmp.Client
 
-  require Logger
-
   @type mac_entry :: %{
           required(:mac_address) => String.t(),
           required(:port_index) => integer(),
diff --git a/lib/towerops/snmp/neighbor_discovery.ex b/lib/towerops/snmp/neighbor_discovery.ex
index 3d25ea9f..4350b547 100644
--- a/lib/towerops/snmp/neighbor_discovery.ex
+++ b/lib/towerops/snmp/neighbor_discovery.ex
@@ -329,8 +329,6 @@ defmodule Towerops.Snmp.NeighborDiscovery do
 
   # Helper Functions
 
-  defp find_interface_by_index(nil, _interfaces), do: nil
-
   defp find_interface_by_index(if_index, interfaces) do
     Enum.find(interfaces, fn interface ->
       interface.if_index == if_index
diff --git a/lib/towerops/snmp/profiles/vendors/routeros.ex b/lib/towerops/snmp/profiles/vendors/routeros.ex
index 6ba9b7b3..4659a9c2 100644
--- a/lib/towerops/snmp/profiles/vendors/routeros.ex
+++ b/lib/towerops/snmp/profiles/vendors/routeros.ex
@@ -729,8 +729,6 @@ defmodule Towerops.Snmp.Profiles.Vendors.Routeros do
     end
   end
 
-  defp format_gauge_description(name, _sensor_type), do: name
-
   # Map mtxrGaugeUnit value to sensor type, unit string, and divisor
   # Mikrotik reports temperature in tenths of degrees (e.g., 230 = 23.0°C)
   defp gauge_unit_to_sensor_type(@gauge_unit_celsius), do: {"temperature", "°C", 10}
diff --git a/lib/towerops/snmp/topology.ex b/lib/towerops/snmp/topology.ex
index 5156cdc3..ac35e326 100644
--- a/lib/towerops/snmp/topology.ex
+++ b/lib/towerops/snmp/topology.ex
@@ -70,7 +70,7 @@ defmodule Towerops.Snmp.Topology do
         %{
           id: device.id,
           label: device.name,
-          type: device_type_atom(device),
+          type: device_type_atom(device.device_role),
           status: device.status,
           site_id: device.site_id,
           site_name: device.site.name,
@@ -191,8 +191,6 @@ defmodule Towerops.Snmp.Topology do
 
   defp ipv4?(_), do: false
 
-  defp calculate_prefix_length(nil), do: ""
-
   defp calculate_prefix_length(subnet_mask) do
     subnet_mask
     |> String.split(".")
@@ -262,8 +260,7 @@ defmodule Towerops.Snmp.Topology do
     |> Enum.sort_by(& &1.device_count, :desc)
   end
 
-  # Convert device type to atom with whitelist to prevent atom exhaustion
-  defp device_type_atom(device) when is_atom(device), do: device
+  # Convert device type string to atom with whitelist to prevent atom exhaustion
   defp device_type_atom("router"), do: :router
   defp device_type_atom("switch"), do: :switch
   defp device_type_atom("wireless"), do: :wireless
diff --git a/lib/towerops/snmp/wireless_client_discovery.ex b/lib/towerops/snmp/wireless_client_discovery.ex
index e3c9220b..1fbe147e 100644
--- a/lib/towerops/snmp/wireless_client_discovery.ex
+++ b/lib/towerops/snmp/wireless_client_discovery.ex
@@ -12,8 +12,6 @@ defmodule Towerops.Snmp.WirelessClientDiscovery do
   alias Towerops.Snmp.Client
   alias Towerops.Snmp.WirelessClientDiscovery.Parser
 
-  require Logger
-
   # Cambium ePMP - cambiumAPConnectedSTATable
   @epmp_base "1.3.6.1.4.1.17713.21.1.2.30.1"
 
diff --git a/lib/towerops/uisp/config_snapshot.ex b/lib/towerops/uisp/config_snapshot.ex
index b817ab5e..ee9bb7e3 100644
--- a/lib/towerops/uisp/config_snapshot.ex
+++ b/lib/towerops/uisp/config_snapshot.ex
@@ -11,8 +11,6 @@ defmodule Towerops.Uisp.ConfigSnapshot do
   alias Towerops.Repo
   alias Towerops.Uisp.Client
 
-  require Logger
-
   @doc """
   Fetches and stores configuration snapshots for all UISP devices.
 
diff --git a/lib/towerops/uisp/gps_sync.ex b/lib/towerops/uisp/gps_sync.ex
index 90beb431..a7a22ca7 100644
--- a/lib/towerops/uisp/gps_sync.ex
+++ b/lib/towerops/uisp/gps_sync.ex
@@ -10,8 +10,6 @@ defmodule Towerops.Uisp.GpsSync do
   alias Towerops.Repo
   alias Towerops.Sites.Site
 
-  require Logger
-
   @doc """
   Updates GPS coordinates for devices and sites from UISP device data.
 
diff --git a/lib/towerops/workers/capacity_insight_worker.ex b/lib/towerops/workers/capacity_insight_worker.ex
index c88a001b..4bd05590 100644
--- a/lib/towerops/workers/capacity_insight_worker.ex
+++ b/lib/towerops/workers/capacity_insight_worker.ex
@@ -22,8 +22,6 @@ defmodule Towerops.Workers.CapacityInsightWorker do
   alias Towerops.Repo
   alias Towerops.Snmp.Interface
 
-  require Logger
-
   @critical_threshold 90
   @warning_threshold 75
   @resolve_threshold 70
diff --git a/lib/towerops/workers/gaiia_webhook_worker.ex b/lib/towerops/workers/gaiia_webhook_worker.ex
index 627f314d..5b9355cb 100644
--- a/lib/towerops/workers/gaiia_webhook_worker.ex
+++ b/lib/towerops/workers/gaiia_webhook_worker.ex
@@ -8,8 +8,6 @@ defmodule Towerops.Workers.GaiiaWebhookWorker do
 
   alias Towerops.Gaiia.Webhooks
 
-  require Logger
-
   @impl Oban.Worker
   def perform(%Oban.Job{args: %{"organization_id" => org_id, "event" => event, "payload" => payload}}) do
     Webhooks.process_event(org_id, event, payload)
diff --git a/lib/towerops_web/components/layouts.ex b/lib/towerops_web/components/layouts.ex
index 19364bad..c469c266 100644
--- a/lib/towerops_web/components/layouts.ex
+++ b/lib/towerops_web/components/layouts.ex
@@ -10,8 +10,6 @@ defmodule ToweropsWeb.Layouts do
   alias ToweropsWeb.Helpers.StatusHelpers
   alias ToweropsWeb.Live.Components.GlobalSearchComponent
 
-  require Logger
-
   # Embed all files in layouts/* within this module.
   # The default root.html.heex file contains the HTML
   # skeleton of your application, namely HTML headers
diff --git a/lib/towerops_web/components/marketing_layouts.ex b/lib/towerops_web/components/marketing_layouts.ex
index 8c4da9d7..fc28470f 100644
--- a/lib/towerops_web/components/marketing_layouts.ex
+++ b/lib/towerops_web/components/marketing_layouts.ex
@@ -6,8 +6,6 @@ defmodule ToweropsWeb.MarketingLayouts do
 
   alias ToweropsWeb.Components.CookieConsent
 
-  require Logger
-
   @doc """
   Renders the marketing layout.
 
diff --git a/lib/towerops_web/controllers/api/v1/mib_controller.ex b/lib/towerops_web/controllers/api/v1/mib_controller.ex
index b5ddf0cc..49d638d9 100644
--- a/lib/towerops_web/controllers/api/v1/mib_controller.ex
+++ b/lib/towerops_web/controllers/api/v1/mib_controller.ex
@@ -473,8 +473,8 @@ defmodule ToweropsWeb.Api.V1.MibController do
   end
 
   defp hardlink?(path) do
-    case File.lstat(path) do
-      {:ok, %{nlink: nlink}} -> nlink > 1
+    case :file.read_file_info(String.to_charlist(path)) do
+      {:ok, file_info} -> elem(file_info, 8) > 1
       _ -> false
     end
   end
diff --git a/lib/towerops_web/controllers/api/v1/pagerduty_webhook_controller.ex b/lib/towerops_web/controllers/api/v1/pagerduty_webhook_controller.ex
index b66f7a4e..cda5f697 100644
--- a/lib/towerops_web/controllers/api/v1/pagerduty_webhook_controller.ex
+++ b/lib/towerops_web/controllers/api/v1/pagerduty_webhook_controller.ex
@@ -50,9 +50,6 @@ defmodule ToweropsWeb.Api.V1.PagerdutyWebhookController do
 
       {:error, :unhandled_event} ->
         json(conn, %{status: "accepted"})
-
-      {:error, _reason} ->
-        conn |> put_status(500) |> json(%{error: "Internal error"})
     end
   end
 
diff --git a/lib/towerops_web/controllers/api/v1/schedules_controller.ex b/lib/towerops_web/controllers/api/v1/schedules_controller.ex
index b3da5764..22b8ae85 100644
--- a/lib/towerops_web/controllers/api/v1/schedules_controller.ex
+++ b/lib/towerops_web/controllers/api/v1/schedules_controller.ex
@@ -237,9 +237,6 @@ defmodule ToweropsWeb.Api.V1.SchedulesController do
           |> json(%{errors: translate_errors(changeset)})
       end
     else
-      {:error, :forbidden} ->
-        conn |> put_status(:forbidden) |> json(%{error: "Access denied to this schedule"})
-
       {:error, :not_found} ->
         conn |> put_status(:not_found) |> json(%{error: "Schedule not found"})
 
diff --git a/lib/towerops_web/live/dashboard_live.ex b/lib/towerops_web/live/dashboard_live.ex
index 73652400..ac6d857e 100644
--- a/lib/towerops_web/live/dashboard_live.ex
+++ b/lib/towerops_web/live/dashboard_live.ex
@@ -352,7 +352,6 @@ defmodule ToweropsWeb.DashboardLive do
   defp uptime_color(pct) when pct >= 95.0, do: "text-yellow-600 dark:text-yellow-400"
   defp uptime_color(_pct), do: "text-red-600 dark:text-red-400"
 
-  defp format_qoe(nil), do: "—"
   defp format_qoe(score), do: :erlang.float_to_binary(score / 1, decimals: 1)
 
   defp format_short_datetime(datetime, timezone) do
diff --git a/lib/towerops_web/live/device_live/form.ex b/lib/towerops_web/live/device_live/form.ex
index fa698ab8..3e9bf161 100644
--- a/lib/towerops_web/live/device_live/form.ex
+++ b/lib/towerops_web/live/device_live/form.ex
@@ -131,13 +131,10 @@ defmodule ToweropsWeb.DeviceLive.Form do
         agent && agent.name
       end
 
-    # Add agent_token_id to the changeset data
-    device_with_agent = Map.put(device, :agent_token_id, agent_token_id)
-
-    # Create changeset and validate to populate form.params for conditional rendering
+    # Create changeset with agent_token_id and validate to populate form fields
     changeset =
-      device_with_agent
-      |> Devices.change_device(%{})
+      device
+      |> Devices.change_device(%{agent_token_id: agent_token_id})
       |> Map.put(:action, :validate)
 
     # Get effective SNMP configuration and source
@@ -154,7 +151,7 @@ defmodule ToweropsWeb.DeviceLive.Form do
 
     socket
     |> assign(:page_title, t("Edit Device"))
-    |> assign(:device, device_with_agent)
+    |> assign(:device, device)
     |> assign(:form, to_form(changeset))
     |> assign(:agent_source, agent_source)
     |> assign(:effective_agent_name, effective_agent_name)
diff --git a/lib/towerops_web/live/device_live/show.ex b/lib/towerops_web/live/device_live/show.ex
index 5da16582..2e8bb41f 100644
--- a/lib/towerops_web/live/device_live/show.ex
+++ b/lib/towerops_web/live/device_live/show.ex
@@ -16,8 +16,6 @@ defmodule ToweropsWeb.DeviceLive.Show do
   alias ToweropsWeb.DeviceLive.Helpers.SensorClassifiers
   alias ToweropsWeb.Live.Helpers.AccessControl
 
-  require Logger
-
   # SNMP interface type to category mappings
   @interface_type_categories %{
     6 => "Ethernet",
@@ -1158,8 +1156,6 @@ defmodule ToweropsWeb.DeviceLive.Show do
     TimeHelpers.format_time_ago(datetime)
   end
 
-  defp format_mrr(nil), do: "$0"
-
   defp format_mrr(%Decimal{} = d) do
     "$#{d |> Decimal.round(2) |> Decimal.to_string(:normal)}"
   end
diff --git a/lib/towerops_web/live/org/integrations_live.ex b/lib/towerops_web/live/org/integrations_live.ex
index f44a7ae2..b5f77284 100644
--- a/lib/towerops_web/live/org/integrations_live.ex
+++ b/lib/towerops_web/live/org/integrations_live.ex
@@ -376,8 +376,6 @@ defmodule ToweropsWeb.Org.IntegrationsLive do
     end
   end
 
-  defp next_sync_minutes(nil, _interval), do: nil
-
   defp next_sync_minutes(last_synced_at, interval) do
     next_sync = DateTime.add(last_synced_at, interval * 60, :second)
     diff = DateTime.diff(next_sync, DateTime.utc_now(), :second)
diff --git a/lib/towerops_web/plugs/detect_eu_user.ex b/lib/towerops_web/plugs/detect_eu_user.ex
index adffbcd4..b4751280 100644
--- a/lib/towerops_web/plugs/detect_eu_user.ex
+++ b/lib/towerops_web/plugs/detect_eu_user.ex
@@ -27,8 +27,6 @@ defmodule ToweropsWeb.Plugs.DetectEUUser do
 
   @doc false
   def call(conn, _opts) do
-    require Logger
-
     # Fetch cookies to check for existing consent
     conn = fetch_cookies(conn)
     requires_consent = detect_eu_user(conn)
diff --git a/lib/towerops_web/plugs/filter_noisy_logs.ex b/lib/towerops_web/plugs/filter_noisy_logs.ex
index 090a7ca8..3b875509 100644
--- a/lib/towerops_web/plugs/filter_noisy_logs.ex
+++ b/lib/towerops_web/plugs/filter_noisy_logs.ex
@@ -12,8 +12,6 @@ defmodule ToweropsWeb.Plugs.FilterNoisyLogs do
   """
   import Plug.Conn
 
-  require Logger
-
   def init(opts), do: opts
 
   def call(conn, _opts) do
diff --git a/lib/towerops_web/plugs/remote_ip_logger.ex b/lib/towerops_web/plugs/remote_ip_logger.ex
index 6e803bc9..0b4ef76c 100644
--- a/lib/towerops_web/plugs/remote_ip_logger.ex
+++ b/lib/towerops_web/plugs/remote_ip_logger.ex
@@ -9,8 +9,6 @@ defmodule ToweropsWeb.Plugs.RemoteIpLogger do
 
   alias ToweropsWeb.RemoteIp
 
-  require Logger
-
   def init(opts), do: opts
 
   def call(conn, _opts) do