Remove all TimescaleDB features from monitoring_checks

Convert to standard PostgreSQL table. TimescaleDB Apache license
doesn't support hypertables or time-series features.

priv/repo/migrations/20251221193939_create_monitoring_checks.exs

@@ -2,14 +2,9 @@ defmodule Towerops.Repo.Migrations.CreateMonitoringChecks do
   use Ecto.Migration
 
   def up do
-    # Enable TimescaleDB extension first
-    execute("CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE")
-
-    # Create the table with composite primary key (id, checked_at)
-    # This is required for TimescaleDB hypertables
-    create table(:monitoring_checks, primary_key: false) do
-      add :id, :binary_id, null: false
-
+    # Note: TimescaleDB features removed due to Apache license restrictions
+    # Using standard PostgreSQL table instead
+    create table(:monitoring_checks) do
       add :equipment_id, references(:equipment, type: :binary_id, on_delete: :delete_all),
         null: false
 
@@ -20,15 +15,10 @@ defmodule Towerops.Repo.Migrations.CreateMonitoringChecks do
       timestamps(type: :utc_datetime, updated_at: false)
     end
 
-    # Add composite primary key
-    execute("ALTER TABLE monitoring_checks ADD PRIMARY KEY (id, checked_at)")
-
-    # Convert to TimescaleDB hypertable (partitioned by checked_at)
-    execute("SELECT create_hypertable('monitoring_checks', 'checked_at')")
-
-    # Create indexes
+    # Create indexes for query performance
     create index(:monitoring_checks, [:equipment_id])
     create index(:monitoring_checks, [:equipment_id, :checked_at])
+    create index(:monitoring_checks, [:checked_at])
 
     # Note: Retention and compression policies require TimescaleDB commercial license
     # Commented out for Apache-licensed version
@@ -50,6 +40,5 @@ defmodule Towerops.Repo.Migrations.CreateMonitoringChecks do
 
   def down do
     drop table(:monitoring_checks)
-    execute("DROP EXTENSION IF EXISTS timescaledb CASCADE")
   end
 end