From 7d73193dc616625a15178d3313d18e3a42da375f Mon Sep 17 00:00:00 2001
From: Graham McIntire <graham@mcintire.me>
Date: Thu, 5 Mar 2026 10:54:53 -0600
Subject: [PATCH] docs: update changelog for LLDP topology discovery

---
 CHANGELOG.txt             | 20 ++++++++++++++++++++
 priv/static/changelog.txt |  7 +++++++
 2 files changed, 27 insertions(+)

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 241b2c64..62ce196e 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,4 +1,24 @@
 2026-03-05
+feat: implement LLDP topology discovery via SNMP
+  - Add LLDP-MIB walker for discovering network neighbors via SNMP
+  - Create device_neighbors table with neighbor relationships
+  - Implement Towerops.Topology.Lldp module for SNMP LLDP discovery
+  - Add discover_lldp_neighbors/1, list_lldp_neighbors/1, remove_stale_lldp_neighbors/1 functions
+  - Automatic device linking when neighbors are found in database
+  - Support for IPv4 and IPv6 management addresses
+  - Implements Phase 1 of network topology discovery (LLDP via SNMP)
+  - LLDP-MIB OIDs: lldpLocSysName, lldpLocPortDesc, lldpRemPortId, lldpRemPortDesc,
+    lldpRemSysName, lldpRemManAddr
+Files: lib/towerops/topology/lldp.ex, lib/towerops/topology/device_neighbor.ex,
+       lib/towerops/topology.ex, priv/repo/migrations/20260305164021_create_device_neighbors.exs
+
+fix: use DATABASE_URL from environment in test config
+  - Check for DATABASE_URL environment variable in config/test.exs
+  - Use DATABASE_URL if present (CI), fall back to localhost config (local dev)
+  - Fixes "connection refused to localhost:5432" errors during compilation in CI
+  - Allows config evaluation to use correct hostname before database operations
+Files: config/test.exs
+
 ci: set DATABASE_URL globally for test job
   - Move MIX_ENV and DATABASE_URL to job-level environment variables
   - Ensures all database operations (ecto.create, compile, test) use correct hostname
diff --git a/priv/static/changelog.txt b/priv/static/changelog.txt
index 930474f5..14e421af 100644
--- a/priv/static/changelog.txt
+++ b/priv/static/changelog.txt
@@ -1,3 +1,10 @@
+2026-03-05 — Network Topology Discovery (Phase 1)
+* Automatic discovery of connected network devices using LLDP
+* View physical port connections between devices
+* Automatic linking of discovered neighbors to existing monitored devices
+* Support for both IPv4 and IPv6 management addresses
+* Foundation for future network mapping and visualization features
+
 2026-03-05 — Reliability & Performance Improvements
 * Optimized alert queries for faster dashboard loading on large organizations
 * Improved data integrity with stricter database constraints