feat: add config/event-rules.template — ready-made eventer rule set

Starter rules for CPU (pinned coretemp chip), load, memory, disk space,
SMART/NVMe health, network, and top processes. All verified to parse and
evaluate via the event-trigger parser; howto references the template.

DOC/howto/event-trigger.md

@@ -43,6 +43,11 @@ Examples:
 "Load high" if uptime | sed 's/.*load average: //; s/,.*//' >= 4
 ```
 
+A ready-made starter set (CPU, memory, disk space/health, NVMe, network,
+processes) lives in `config/event-rules.template` — copy it to
+`~/.config/linux_post_install/event.env` or add the lines you want via
+`pos system event-trigger config`.
+
 Behavior:
 
 - The check runs on every pass. Non-numeric/empty output, or an unparseable

config/event-rules.template

@@ -0,0 +1,54 @@
+# eventer rules template — copy/paste into ~/.config/linux_post_install/event.env
+# (or add each line via: pos system event-trigger config).
+#
+# One independent rule per line. Grammar:
+#
+#   "<message>" if <check-command> <op> <threshold>
+#   <check-command> <op> <threshold>          (no message → auto-composed)
+#
+#   <message>        optional quoted alert text (quote-stripped)
+#   <check-command>  any shell command; first numeric output is the value
+#   <op>             >  <  >=  <=  ==  !=
+#   <threshold>      number with optional unit suffix: 60c, 80%, 10g
+#
+# Rules alert once on false→true (plus one recovery message on true→false)
+# via lib/notify.sh — Telegram by default. State is tracked per rule in
+# ~/.local/share/linux_post_install/eventer/state/ (keyed by rule-line hash).
+#
+# Verify each check on your machine first (adjust device names):
+#   sensors -u coretemp-isa-0000 | awk '/Package id 0:/{f=1} f && /temp1_input:/{print $2; exit}'
+#   smartctl -A /dev/sda | awk '/Temperature_Celsius/{print $10}'
+#   nvme smart-log /dev/nvme0
+#   vnstat -d 1
+#
+# ── CPU (lm-sensors) ──────────────────────────────────────────────
+"CPU too hot" if sensors -u coretemp-isa-0000 | awk '/Package id 0:/{f=1} f && /temp1_input:/{print $2; exit}' > 60c
+"CPU hot warning" if sensors -u coretemp-isa-0000 | awk '/Package id 0:/{f=1} f && /temp1_input:/{print $2; exit}' > 55c
+"Load high" if uptime | sed 's/.*load average: //' | awk -F'[, ]+' '{print $1}' > 4
+
+# ── Memory (procps, always present) ───────────────────────────────
+"RAM high" if free -m | awk '/^Mem:/{print int($3/$2*100)}' > 90%
+"Swap in use" if free -m | awk '/^Swap:/{print $3+0}' > 1000
+
+# ── Disk space ───────────────────────────────────────────────────
+"Disk / nearly full" if df -P / | awk 'NR==2{print $5+0}' > 80%
+"Disk /srv full" if df -P /srv | awk 'NR==2{print $5+0}' > 85%
+
+# ── Disk health (smartmontools) ──────────────────────────────────
+"Disk sda SMART fail" if smartctl -H /dev/sda | grep -q PASSED && echo 0 || echo 1 == 1
+"SDA hot" if smartctl -A /dev/sda | awk '/Temperature_Celsius/{print $10}' > 50c
+
+# ── NVMe (nvme-cli) ──────────────────────────────────────────────
+"NVMe hot" if nvme smart-log /dev/nvme0 | awk '/^temperature/{print $3}' > 65c
+"NVMe wear-out" if nvme smart-log /dev/nvme0 | awk '/percentage used/{print $NF+0}' > 80%
+
+# ── Network (vnstat needs ~1 day of collected data) ──────────────
+"Big traffic day" if vnstat -d 1 | awk '/today/{print $10+0}' > 20000
+"Link eth0 down" if ethtool eth0 | grep -q 'Link detected: yes' && echo 0 || echo 1 == 1
+
+# ── Processes ────────────────────────────────────────────────────
+"Top CPU 80%" if top -bn1 | awk 'NR==8{print $9+0}' > 80%
+"Top MEM 90%" if top -bn1 | awk 'NR==8{print $10+0}' > 90%
+
+# Manage rules interactively:   pos system event-trigger config
+# Schedule the timer:           pos system event-trigger enable 5m