feat: Add comprehensive database schema migrations for all platform tables

- Add subscribers table with IMSI, MSISDN, authentication keys, and eSIM profile fields
- Add service_plans table for data/voice/SMS limits and QoS parameters (ARPA, AMBR)
- Add sessions table for tracking PDU sessions with QoS and usage metrics
- Add usage_records table for billing and charging data
- Add users table with role-based access control fields
- Add roles, permissions, and role_permissions junction table for RBAC
- Add auth

migrations/00003_init_subscribers.sql

@@ -0,0 +1,38 @@
+-- +goose Up
+-- Create subscribers table
+CREATE TABLE IF NOT EXISTS subscribers (
+    id            SERIAL PRIMARY KEY,
+    imsi          TEXT NOT NULL UNIQUE,
+    msisdn        TEXT UNIQUE,
+    imei          TEXT,
+    first_name    TEXT NOT NULL,
+    last_name     TEXT NOT NULL,
+    email         TEXT UNIQUE,
+    organization_id TEXT,
+    status        TEXT NOT NULL DEFAULT 'active',
+    plan_id       INTEGER,
+    balance       DOUBLE PRECISION NOT NULL DEFAULT 0,
+    auth_key      TEXT NOT NULL,
+    opc           TEXT NOT NULL,
+    serving_plmn_mcc TEXT NOT NULL,
+    serving_plmn_mnc TEXT NOT NULL,
+    euicc_id      TEXT,
+    profile_id    TEXT,
+    profile_status TEXT NOT NULL DEFAULT 'inactive',
+    created_at    TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at    TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    deleted_at    TIMESTAMPTZ
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_subscribers_imsi ON subscribers(imsi);
+CREATE INDEX IF NOT EXISTS idx_subscribers_msisdn ON subscribers(msisdn);
+CREATE INDEX IF NOT EXISTS idx_subscribers_email ON subscribers(email);
+CREATE INDEX IF NOT EXISTS idx_subscribers_status ON subscribers(status);
+CREATE INDEX IF NOT EXISTS idx_subscribers_organization_id ON subscribers(organization_id);
+CREATE INDEX IF NOT EXISTS idx_subscribers_plan_id ON subscribers(plan_id);
+CREATE INDEX IF NOT EXISTS idx_subscribers_deleted_at ON subscribers(deleted_at);
+
+-- +goose Down
+-- Drop subscribers table
+DROP TABLE IF EXISTS subscribers CASCADE;

migrations/00004_init_service_plans.sql

@@ -0,0 +1,28 @@
+-- +goose Up
+-- Create service_plans table
+CREATE TABLE IF NOT EXISTS service_plans (
+    id          SERIAL PRIMARY KEY,
+    name        TEXT NOT NULL,
+    description TEXT,
+    data_limit  BIGINT,
+    voice_limit INTEGER,
+    sms_limit   INTEGER,
+    monthly_fee DOUBLE PRECISION,
+    data_rate   DOUBLE PRECISION,
+    voice_rate  DOUBLE PRECISION,
+    sms_rate    DOUBLE PRECISION,
+    arpa        INTEGER,
+    ambr_uplink   INTEGER,
+    ambr_downlink INTEGER,
+    created_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    deleted_at  TIMESTAMPTZ
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_service_plans_name ON service_plans(name);
+CREATE INDEX IF NOT EXISTS idx_service_plans_deleted_at ON service_plans(deleted_at);
+
+-- +goose Down
+-- Drop service_plans table
+DROP TABLE IF EXISTS service_plans CASCADE;

migrations/00005_init_sessions.sql

@@ -0,0 +1,37 @@
+-- +goose Up
+-- Create sessions table
+CREATE TABLE IF NOT EXISTS sessions (
+    id           SERIAL PRIMARY KEY,
+    subscriber_id INTEGER NOT NULL,
+    session_id   TEXT NOT NULL UNIQUE,
+    pdu_address  TEXT,
+    dnn          TEXT,
+    snssai_sst   SMALLINT,
+    snssai_sd    INTEGER,
+    qos_qci      SMALLINT,
+    qos_arpa     INTEGER,
+    qos_mbr_uplink   INTEGER,
+    qos_mbr_downlink INTEGER,
+    qos_gbr_uplink   INTEGER,
+    qos_gbr_downlink INTEGER,
+    qos_priority SMALLINT,
+    status       TEXT NOT NULL DEFAULT 'active',
+    start_time   TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    end_time     TIMESTAMPTZ,
+    data_used    BIGINT NOT NULL DEFAULT 0,
+    voice_used   INTEGER NOT NULL DEFAULT 0,
+    sms_used     INTEGER NOT NULL DEFAULT 0,
+    created_at   TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at   TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    deleted_at   TIMESTAMPTZ
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_sessions_subscriber_id ON sessions(subscriber_id);
+CREATE INDEX IF NOT EXISTS idx_sessions_session_id ON sessions(session_id);
+CREATE INDEX IF NOT EXISTS idx_sessions_status ON sessions(status);
+CREATE INDEX IF NOT EXISTS idx_sessions_deleted_at ON sessions(deleted_at);
+
+-- +goose Down
+-- Drop sessions table
+DROP TABLE IF EXISTS sessions CASCADE;

migrations/00006_init_usage_records.sql

@@ -0,0 +1,27 @@
+-- +goose Up
+-- Create usage_records table
+CREATE TABLE IF NOT EXISTS usage_records (
+    id           SERIAL PRIMARY KEY,
+    subscriber_id INTEGER NOT NULL,
+    session_id   INTEGER,
+    usage_type   TEXT NOT NULL,
+    start_time   TIMESTAMPTZ NOT NULL,
+    end_time     TIMESTAMPTZ NOT NULL,
+    volume       BIGINT NOT NULL,
+    rate         DOUBLE PRECISION,
+    cost         DOUBLE PRECISION,
+    billing_cycle TEXT,
+    invoice_id   INTEGER,
+    created_at   TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at   TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_usage_records_subscriber_id ON usage_records(subscriber_id);
+CREATE INDEX IF NOT EXISTS idx_usage_records_session_id ON usage_records(session_id);
+CREATE INDEX IF NOT EXISTS idx_usage_records_usage_type ON usage_records(usage_type);
+CREATE INDEX IF NOT EXISTS idx_usage_records_billing_cycle ON usage_records(billing_cycle);
+
+-- +goose Down
+-- Drop usage_records table
+DROP TABLE IF EXISTS usage_records CASCADE;

migrations/00007_init_users.sql

@@ -0,0 +1,26 @@
+-- +goose Up
+-- Create users table
+CREATE TABLE IF NOT EXISTS users (
+    id         SERIAL PRIMARY KEY,
+    username   TEXT NOT NULL UNIQUE,
+    email      TEXT NOT NULL UNIQUE,
+    password   TEXT NOT NULL,
+    first_name TEXT NOT NULL,
+    last_name  TEXT NOT NULL,
+    role       TEXT NOT NULL DEFAULT 'viewer',
+    is_active  BOOLEAN NOT NULL DEFAULT true,
+    last_login TIMESTAMPTZ,
+    created_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    deleted_at  TIMESTAMPTZ
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_users_username ON users(username);
+CREATE INDEX IF NOT EXISTS idx_users_email ON users(email);
+CREATE INDEX IF NOT EXISTS idx_users_role ON users(role);
+CREATE INDEX IF NOT EXISTS idx_users_deleted_at ON users(deleted_at);
+
+-- +goose Down
+-- Drop users table
+DROP TABLE IF EXISTS users CASCADE;

migrations/00008_init_roles_permissions.sql

@@ -0,0 +1,37 @@
+-- +goose Up
+-- Create roles table
+CREATE TABLE IF NOT EXISTS roles (
+    id          SERIAL PRIMARY KEY,
+    name        TEXT NOT NULL UNIQUE,
+    description TEXT,
+    created_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at  TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Create permissions table
+CREATE TABLE IF NOT EXISTS permissions (
+    id          SERIAL PRIMARY KEY,
+    name        TEXT NOT NULL UNIQUE,
+    resource    TEXT NOT NULL,
+    action      TEXT NOT NULL,
+    description TEXT,
+    created_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at  TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Create role_permissions junction table
+CREATE TABLE IF NOT EXISTS role_permissions (
+    role_id       INTEGER NOT NULL REFERENCES roles(id) ON DELETE CASCADE,
+    permission_id INTEGER NOT NULL REFERENCES permissions(id) ON DELETE CASCADE,
+    PRIMARY KEY (role_id, permission_id)
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_role_permissions_role_id ON role_permissions(role_id);
+CREATE INDEX IF NOT EXISTS idx_role_permissions_permission_id ON role_permissions(permission_id);
+
+-- +goose Down
+-- Drop role_permissions, permissions, and roles tables
+DROP TABLE IF EXISTS role_permissions CASCADE;
+DROP TABLE IF EXISTS permissions CASCADE;
+DROP TABLE IF EXISTS roles CASCADE;

migrations/00009_init_auth_sessions_api_keys.sql

@@ -0,0 +1,40 @@
+-- +goose Up
+-- Create auth_sessions table
+CREATE TABLE IF NOT EXISTS auth_sessions (
+    id            TEXT PRIMARY KEY,
+    user_id       INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    token         TEXT NOT NULL,
+    refresh_token TEXT NOT NULL,
+    expires_at    TIMESTAMPTZ NOT NULL,
+    ip_address    TEXT,
+    user_agent    TEXT,
+    is_active     BOOLEAN NOT NULL DEFAULT true,
+    created_at    TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at    TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Create api_keys table
+CREATE TABLE IF NOT EXISTS api_keys (
+    id          SERIAL PRIMARY KEY,
+    name        TEXT NOT NULL,
+    key         TEXT NOT NULL UNIQUE,
+    secret      TEXT NOT NULL,
+    permissions JSONB,
+    is_active   BOOLEAN NOT NULL DEFAULT true,
+    expires_at  TIMESTAMPTZ,
+    last_used   TIMESTAMPTZ,
+    created_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at  TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_auth_sessions_user_id ON auth_sessions(user_id);
+CREATE INDEX IF NOT EXISTS idx_auth_sessions_token ON auth_sessions(token);
+CREATE INDEX IF NOT EXISTS idx_auth_sessions_expires_at ON auth_sessions(expires_at);
+CREATE INDEX IF NOT EXISTS idx_api_keys_key ON api_keys(key);
+CREATE INDEX IF NOT EXISTS idx_api_keys_is_active ON api_keys(is_active);
+
+-- +goose Down
+-- Drop auth_sessions and api_keys tables
+DROP TABLE IF EXISTS auth_sessions CASCADE;
+DROP TABLE IF EXISTS api_keys CASCADE;

migrations/00010_init_plugins.sql

@@ -0,0 +1,30 @@
+-- +goose Up
+-- Create plugins table
+CREATE TABLE IF NOT EXISTS plugins (
+    id          SERIAL PRIMARY KEY,
+    name        TEXT NOT NULL UNIQUE,
+    version     TEXT NOT NULL,
+    description TEXT,
+    author      TEXT,
+    type        TEXT,
+    category    TEXT,
+    license     TEXT,
+    homepage    TEXT,
+    repository  TEXT,
+    enabled     BOOLEAN NOT NULL DEFAULT false,
+    status      TEXT NOT NULL DEFAULT 'installed',
+    config      JSONB,
+    installed_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    created_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    deleted_at  TIMESTAMPTZ
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_plugins_name ON plugins(name);
+CREATE INDEX IF NOT EXISTS idx_plugins_enabled ON plugins(enabled);
+CREATE INDEX IF NOT EXISTS idx_plugins_deleted_at ON plugins(deleted_at);
+
+-- +goose Down
+-- Drop plugins table
+DROP TABLE IF EXISTS plugins CASCADE;

migrations/00011_init_automations.sql

@@ -0,0 +1,46 @@
+-- +goose Up
+-- Create automations table
+CREATE TABLE IF NOT EXISTS automations (
+    id                  SERIAL PRIMARY KEY,
+    name                TEXT NOT NULL UNIQUE,
+    description         TEXT,
+    type                TEXT,
+    enabled             BOOLEAN NOT NULL DEFAULT true,
+    schedule_type       TEXT,
+    schedule_cron       TEXT,
+    schedule_interval_sec INTEGER,
+    timezone            TEXT NOT NULL DEFAULT 'UTC',
+    definition          JSONB,
+    last_run_at         TIMESTAMPTZ,
+    next_run_at         TIMESTAMPTZ,
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at          TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    deleted_at          TIMESTAMPTZ
+);
+
+-- Create automation_runs table
+CREATE TABLE IF NOT EXISTS automation_runs (
+    id           SERIAL PRIMARY KEY,
+    automation_id INTEGER NOT NULL REFERENCES automations(id) ON DELETE CASCADE,
+    status       TEXT NOT NULL,
+    started_at   TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    ended_at     TIMESTAMPTZ,
+    duration_ms  BIGINT NOT NULL DEFAULT 0,
+    output       TEXT,
+    error        TEXT,
+    details      JSONB,
+    created_at   TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_automations_name ON automations(name);
+CREATE INDEX IF NOT EXISTS idx_automations_enabled ON automations(enabled);
+CREATE INDEX IF NOT EXISTS idx_automations_deleted_at ON automations(deleted_at);
+CREATE INDEX IF NOT EXISTS idx_automation_runs_automation_id ON automation_runs(automation_id);
+CREATE INDEX IF NOT EXISTS idx_automation_runs_status ON automation_runs(status);
+CREATE INDEX IF NOT EXISTS idx_automation_runs_started_at ON automation_runs(started_at);
+
+-- +goose Down
+-- Drop automation_runs and automations tables
+DROP TABLE IF EXISTS automation_runs CASCADE;
+DROP TABLE IF EXISTS automations CASCADE;

migrations/00012_init_config_entries.sql

@@ -0,0 +1,23 @@
+-- +goose Up
+-- Create config_entries table
+CREATE TABLE IF NOT EXISTS config_entries (
+    id          SERIAL PRIMARY KEY,
+    section     TEXT NOT NULL,
+    key         TEXT NOT NULL,
+    value       TEXT,
+    type        TEXT,
+    sensitive   BOOLEAN NOT NULL DEFAULT false,
+    description TEXT,
+    updated_by  TEXT,
+    created_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    UNIQUE(section, key)
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_config_entries_section ON config_entries(section);
+CREATE INDEX IF NOT EXISTS idx_config_entries_key ON config_entries(key);
+
+-- +goose Down
+-- Drop config_entries table
+DROP TABLE IF EXISTS config_entries CASCADE;

migrations/00013_init_deployment_records.sql

@@ -0,0 +1,28 @@
+-- +goose Up
+-- Create deployment_records table
+CREATE TABLE IF NOT EXISTS deployment_records (
+    id          SERIAL PRIMARY KEY,
+    service     TEXT NOT NULL,
+    version     TEXT NOT NULL,
+    environment TEXT,
+    status      TEXT NOT NULL,
+    strategy    TEXT,
+    replicas    INTEGER NOT NULL DEFAULT 1,
+    triggered_by TEXT,
+    reason      TEXT,
+    started_at  TIMESTAMPTZ,
+    completed_at TIMESTAMPTZ,
+    rollback_to TEXT,
+    created_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at  TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_deployment_records_service ON deployment_records(service);
+CREATE INDEX IF NOT EXISTS idx_deployment_records_environment ON deployment_records(environment);
+CREATE INDEX IF NOT EXISTS idx_deployment_records_status ON deployment_records(status);
+CREATE INDEX IF NOT EXISTS idx_deployment_records_created_at ON deployment_records(created_at);
+
+-- +goose Down
+-- Drop deployment_records table
+DROP TABLE IF EXISTS deployment_records CASCADE;

migrations/00014_init_chaos_experiment_records.sql

@@ -0,0 +1,28 @@
+-- +goose Up
+-- Create chaos_experiment_records table
+CREATE TABLE IF NOT EXISTS chaos_experiment_records (
+    id          SERIAL PRIMARY KEY,
+    external_id TEXT UNIQUE,
+    name        TEXT,
+    type        TEXT,
+    target      TEXT,
+    status      TEXT,
+    duration_ms BIGINT NOT NULL DEFAULT 0,
+    probability DOUBLE PRECISION,
+    amount      INTEGER NOT NULL DEFAULT 0,
+    started_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    finished_at TIMESTAMPTZ,
+    error       TEXT,
+    created_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at  TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_chaos_experiment_records_external_id ON chaos_experiment_records(external_id);
+CREATE INDEX IF NOT EXISTS idx_chaos_experiment_records_status ON chaos_experiment_records(status);
+CREATE INDEX IF NOT EXISTS idx_chaos_experiment_records_target ON chaos_experiment_records(target);
+CREATE INDEX IF NOT EXISTS idx_chaos_experiment_records_started_at ON chaos_experiment_records(started_at);
+
+-- +goose Down
+-- Drop chaos_experiment_records table
+DROP TABLE IF EXISTS chaos_experiment_records CASCADE;

migrations/00015_init_imsi_allocations.sql

@@ -0,0 +1,14 @@
+-- +goose Up
+-- Create imsi_allocations table
+CREATE TABLE IF NOT EXISTS imsi_allocations (
+    id        SERIAL PRIMARY KEY,
+    last_imsi BIGINT NOT NULL DEFAULT 0,
+    min_imsi  BIGINT NOT NULL DEFAULT 1,
+    max_imsi  BIGINT NOT NULL DEFAULT 999999999,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- +goose Down
+-- Drop imsi_allocations table
+DROP TABLE IF EXISTS imsi_allocations CASCADE;

migrations/00016_init_payment_methods.sql

@@ -0,0 +1,23 @@
+-- +goose Up
+-- Create payment_methods table
+CREATE TABLE IF NOT EXISTS payment_methods (
+    id            TEXT PRIMARY KEY,
+    subscriber_id INTEGER NOT NULL,
+    gateway_id    TEXT,
+    type          TEXT NOT NULL,
+    customer_id   TEXT,
+    last4         TEXT,
+    brand         TEXT,
+    expiry_month  INTEGER,
+    expiry_year   INTEGER,
+    is_default    BOOLEAN NOT NULL DEFAULT false,
+    created_at    TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_payment_methods_subscriber_id ON payment_methods(subscriber_id);
+CREATE INDEX IF NOT EXISTS idx_payment_methods_gateway_id ON payment_methods(gateway_id);
+
+-- +goose Down
+-- Drop payment_methods table
+DROP TABLE IF EXISTS payment_methods CASCADE;

migrations/00017_init_transactions.sql

@@ -0,0 +1,25 @@
+-- +goose Up
+-- Create transactions table
+CREATE TABLE IF NOT EXISTS transactions (
+    id            SERIAL PRIMARY KEY,
+    subscriber_id  INTEGER NOT NULL,
+    transaction_id TEXT NOT NULL,
+    type          TEXT NOT NULL,
+    amount        DOUBLE PRECISION NOT NULL,
+    currency      TEXT NOT NULL,
+    status        TEXT NOT NULL,
+    description   TEXT,
+    parent_id     INTEGER,
+    created_at    TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at    TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_transactions_subscriber_id ON transactions(subscriber_id);
+CREATE INDEX IF NOT EXISTS idx_transactions_transaction_id ON transactions(transaction_id);
+CREATE INDEX IF NOT EXISTS idx_transactions_status ON transactions(status);
+CREATE INDEX IF NOT EXISTS idx_transactions_created_at ON transactions(created_at);
+
+-- +goose Down
+-- Drop transactions table
+DROP TABLE IF EXISTS transactions CASCADE;

migrations/00018_init_notifications_alerts.sql

@@ -0,0 +1,35 @@
+-- +goose Up
+-- Create notifications table
+CREATE TABLE IF NOT EXISTS notifications (
+    id           SERIAL PRIMARY KEY,
+    subscriber_id INTEGER NOT NULL,
+    type         TEXT NOT NULL,
+    title        TEXT NOT NULL,
+    message      TEXT NOT NULL,
+    read         BOOLEAN NOT NULL DEFAULT false,
+    created_at   TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Create alerts table
+CREATE TABLE IF NOT EXISTS alerts (
+    id           SERIAL PRIMARY KEY,
+    type         TEXT NOT NULL,
+    severity     TEXT NOT NULL,
+    message      TEXT NOT NULL,
+    subscriber_id INTEGER,
+    timestamp    TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    resolved     BOOLEAN NOT NULL DEFAULT false
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_notifications_subscriber_id ON notifications(subscriber_id);
+CREATE INDEX IF NOT EXISTS idx_notifications_read ON notifications(read);
+CREATE INDEX IF NOT EXISTS idx_alerts_subscriber_id ON alerts(subscriber_id);
+CREATE INDEX IF NOT EXISTS idx_alerts_type ON alerts(type);
+CREATE INDEX IF NOT EXISTS idx_alerts_severity ON alerts(severity);
+CREATE INDEX IF NOT EXISTS idx_alerts_resolved ON alerts(resolved);
+
+-- +goose Down
+-- Drop notifications and alerts tables
+DROP TABLE IF EXISTS notifications CASCADE;
+DROP TABLE IF EXISTS alerts CASCADE;