Add biz_state monitoring with shared LLDP parse and batch collect.

Introduce ParseProfile-based business state tasks that reuse LLDP parsing for snapshot batches (separate from topology Fabric writes), with scheduler, export, and a Phase1 UI under network tasks.

Co-authored-by: Cursor <cursoragent@cursor.com>

netx_api/biz_state/schema_ensure.py

@@ -0,0 +1,27 @@
+"""Idempotent DDL safety-net for biz_state tables (create_all + ADD COLUMN)."""
+
+from __future__ import annotations
+
+import logging
+
+from sqlalchemy.engine import Connection
+
+from ..schema_patches import _run_sql
+
+_log = logging.getLogger("netx.biz_state.schema")
+
+
+def apply_biz_state_schema(conn: Connection) -> None:
+    """Ensure core tables exist; create_all usually handles this — safety net for brownfield."""
+    # Tables are defined on ORM Base; create_all covers new installs.
+    # Keep lightweight indexes that older DBs might miss.
+    for sql in (
+        "CREATE INDEX IF NOT EXISTS ix_biz_state_task_status ON biz_state_task (status)",
+        "CREATE INDEX IF NOT EXISTS ix_biz_state_batch_task_id ON biz_state_batch (task_id)",
+        "CREATE INDEX IF NOT EXISTS ix_biz_state_batch_command_batch_id ON biz_state_batch_command (batch_id)",
+        "CREATE INDEX IF NOT EXISTS ix_biz_state_lldp_neighbor_batch_id ON biz_state_lldp_neighbor (batch_id)",
+    ):
+        try:
+            _run_sql(conn, sql)
+        except Exception:
+            _log.debug("biz_state schema patch skipped: %s", sql[:80], exc_info=True)