ems-core v1.0.0: Standard EMS platform core

Shared backend + frontend for multi-customer EMS deployments.
- 12 enterprise modules: quota, cost, charging, maintenance, analysis, etc.
- 120+ API endpoints, 37 database tables
- Customer config mechanism (CUSTOMER env var + YAML config)
- Collectors: Modbus TCP, MQTT, HTTP API, Sungrow iSolarCloud
- Frontend: React 19 + Ant Design + ECharts + Three.js
- Infrastructure: Redis cache, rate limiting, aggregation engine

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/alembic/versions/007_maintenance_tables.py

@@ -0,0 +1,88 @@
+"""Add maintenance tables
+
+Revision ID: 007_maintenance
+Revises: 006_pricing
+Create Date: 2026-04-03
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = "007_maintenance"
+down_revision = "006_pricing"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # --- inspection_plans ---
+    op.create_table(
+        "inspection_plans",
+        sa.Column("id", sa.Integer, primary_key=True, autoincrement=True),
+        sa.Column("name", sa.String(200), nullable=False),
+        sa.Column("description", sa.Text),
+        sa.Column("device_group_id", sa.Integer, sa.ForeignKey("device_groups.id")),
+        sa.Column("device_ids", sa.JSON),
+        sa.Column("schedule_type", sa.String(20)),
+        sa.Column("schedule_cron", sa.String(100)),
+        sa.Column("inspector_id", sa.Integer, sa.ForeignKey("users.id")),
+        sa.Column("checklist", sa.JSON),
+        sa.Column("is_active", sa.Boolean, default=True),
+        sa.Column("next_run_at", sa.DateTime(timezone=True)),
+        sa.Column("created_by", sa.Integer, sa.ForeignKey("users.id")),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
+        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
+    )
+
+    # --- inspection_records ---
+    op.create_table(
+        "inspection_records",
+        sa.Column("id", sa.Integer, primary_key=True, autoincrement=True),
+        sa.Column("plan_id", sa.Integer, sa.ForeignKey("inspection_plans.id"), nullable=False),
+        sa.Column("inspector_id", sa.Integer, sa.ForeignKey("users.id"), nullable=False),
+        sa.Column("status", sa.String(20), default="pending"),
+        sa.Column("findings", sa.JSON),
+        sa.Column("started_at", sa.DateTime(timezone=True)),
+        sa.Column("completed_at", sa.DateTime(timezone=True)),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
+    )
+
+    # --- repair_orders ---
+    op.create_table(
+        "repair_orders",
+        sa.Column("id", sa.Integer, primary_key=True, autoincrement=True),
+        sa.Column("code", sa.String(50), unique=True, nullable=False),
+        sa.Column("title", sa.String(200), nullable=False),
+        sa.Column("description", sa.Text),
+        sa.Column("device_id", sa.Integer, sa.ForeignKey("devices.id")),
+        sa.Column("alarm_event_id", sa.Integer, sa.ForeignKey("alarm_events.id")),
+        sa.Column("priority", sa.String(20), default="medium"),
+        sa.Column("status", sa.String(20), default="open"),
+        sa.Column("assigned_to", sa.Integer, sa.ForeignKey("users.id")),
+        sa.Column("resolution", sa.Text),
+        sa.Column("cost_estimate", sa.Float),
+        sa.Column("actual_cost", sa.Float),
+        sa.Column("created_by", sa.Integer, sa.ForeignKey("users.id")),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
+        sa.Column("assigned_at", sa.DateTime(timezone=True)),
+        sa.Column("completed_at", sa.DateTime(timezone=True)),
+        sa.Column("closed_at", sa.DateTime(timezone=True)),
+    )
+
+    # --- duty_schedules ---
+    op.create_table(
+        "duty_schedules",
+        sa.Column("id", sa.Integer, primary_key=True, autoincrement=True),
+        sa.Column("user_id", sa.Integer, sa.ForeignKey("users.id"), nullable=False),
+        sa.Column("duty_date", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("shift", sa.String(20)),
+        sa.Column("area_id", sa.Integer, sa.ForeignKey("device_groups.id")),
+        sa.Column("notes", sa.Text),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("duty_schedules")
+    op.drop_table("repair_orders")
+    op.drop_table("inspection_records")
+    op.drop_table("inspection_plans")