From 91468a48b4ce6319d5f43b9bc3d554a4e666bc51 Mon Sep 17 00:00:00 2001
From: Brad Stein <Brad.Stein@gmail.com>
Date: Thu, 29 Jan 2026 03:03:01 -0300
Subject: [PATCH] atlasbot: surface node age summary

---
 atlasbot/snapshot/builder.py | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/atlasbot/snapshot/builder.py b/atlasbot/snapshot/builder.py
index c622ab1..60246fb 100644
--- a/atlasbot/snapshot/builder.py
+++ b/atlasbot/snapshot/builder.py
@@ -74,6 +74,7 @@ def build_summary(snapshot: dict[str, Any] | None) -> dict[str, Any]:
     summary.update(_build_nodes(snapshot))
     summary.update(_build_pressure(snapshot))
     summary.update(_build_hardware(nodes_detail))
+    summary.update(_build_node_ages(nodes_detail))
     summary.update(_build_capacity(metrics))
     summary.update(_build_pods(metrics))
     summary.update(_build_namespace_pods(snapshot))
@@ -135,6 +136,19 @@ def _build_hardware(nodes_detail: list[dict[str, Any]]) -> dict[str, Any]:
     return {"hardware": {key: sorted(value) for key, value in hardware.items()}}
 
 
+def _build_node_ages(nodes_detail: list[dict[str, Any]]) -> dict[str, Any]:
+    ages: list[dict[str, Any]] = []
+    for node in nodes_detail or []:
+        if not isinstance(node, dict):
+            continue
+        name = node.get("name")
+        age = node.get("age_hours")
+        if name and isinstance(age, (int, float)):
+            ages.append({"name": name, "age_hours": age})
+    ages.sort(key=lambda item: -(item.get("age_hours") or 0))
+    return {"node_ages": ages[:5]} if ages else {}
+
+
 def _build_pods(metrics: dict[str, Any]) -> dict[str, Any]:
     pods = {
         "running": metrics.get("pods_running"),
@@ -355,6 +369,22 @@ def _append_hardware(lines: list[str], summary: dict[str, Any]) -> None:
         lines.append("hardware: " + "; ".join(sorted(parts)))
 
 
+def _append_node_ages(lines: list[str], summary: dict[str, Any]) -> None:
+    ages = summary.get("node_ages") if isinstance(summary.get("node_ages"), list) else []
+    if not ages:
+        return
+    parts = []
+    for entry in ages[:3]:
+        if not isinstance(entry, dict):
+            continue
+        name = entry.get("name")
+        age = entry.get("age_hours")
+        if name and isinstance(age, (int, float)):
+            parts.append(f"{name}={_format_float(age)}h")
+    if parts:
+        lines.append("node_age_top: " + "; ".join(parts))
+
+
 def _append_pressure(lines: list[str], summary: dict[str, Any]) -> None:
     pressure = summary.get("pressure_nodes")
     if not isinstance(pressure, dict) or not pressure:
@@ -767,6 +797,7 @@ def summary_text(snapshot: dict[str, Any] | None) -> str:
     _append_nodes(lines, summary)
     _append_pressure(lines, summary)
     _append_hardware(lines, summary)
+    _append_node_ages(lines, summary)
     _append_capacity(lines, summary)
     _append_pods(lines, summary)
     _append_namespace_pods(lines, summary)