docs: add table of contents to procedures readme and update gitignore

.gitignore

@@ -1,2 +1,3 @@
 db_credentials
-global-bundle.pem
+global-bundle.pem
+template/

postgresql/procedures/README.md

@@ -8,6 +8,24 @@ This is the declarative (PostgreSQL procedures based) partitioning implementatio
 > 1.  **Data Visibility**: After enabling partitioning, old data remains in `*_old` tables and is **NOT visible** in Zabbix. You must migrate data manually if needed.
 > 2.  **Disable Housekeeping**: You **MUST** disable Zabbix Housekeeper for History and Trends in *Administration -> Housekeeping*. Failure to do so will cause massive `DELETE` loads.
 
+## Table of Contents
+- [Architecture](#architecture)
+  - [Components](#components)
+- [Prerequisites: Database & User Creation](#prerequisites-database--user-creation)
+- [Installation](#installation)
+- [Configuration](#configuration)
+  - [Modifying Retention](#modifying-retention)
+- [Maintenance](#maintenance)
+  - [Scheduling Maintenance](#scheduling-maintenance)
+- [Monitoring & Permissions](#monitoring--permissions)
+  - [Versioning](#versioning)
+  - [Least Privilege Access (`zbx_monitor`)](#least-privilege-access-zbx_monitor)
+- [Implementation Details](#implementation-details)
+  - [`auditlog` Table](#auditlog-table)
+  - [Converting Existing Tables](#converting-existing-tables)
+- [Upgrades](#upgrades)
+- [Appendix: Zabbix Server & Frontend RDS Configuration](#appendix-zabbix-server--frontend-rds-configuration)
+
 ## Architecture
 
 The solution uses PostgreSQL native declarative partitioning (`PARTITION BY RANGE`).