hub v0.123.0: app_stopped_unhealthy (decision 28); 09 decisions 26-28 recorded

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

hub/internal/notify/dispatcher.go

@@ -398,6 +398,8 @@ var perAppCooldownEvents = map[string]bool{
 	// v0.122.0 (R-659): a held app with no whole copy on its box is one app's event with no digest —
 	// two apps stranded on one night are two alarms, and the second must not be swallowed.
 	"app_hold_no_whole_copy": true,
+	// v0.123.0 (decision 28): one app's stop, no digest behind it.
+	"app_stopped_unhealthy": true,
 }
 
 // perAppCustomerCooldownEvents is the CUSTOMER-leg sibling of perAppCooldownEvents (v0.120.0). The
@@ -407,6 +409,8 @@ var perAppCooldownEvents = map[string]bool{
 var perAppCustomerCooldownEvents = map[string]bool{
 	"app_update_undone": true,
 	"app_update_held":   true,
+	// v0.123.0 (decision 28): two apps stopped on one night are two mails.
+	"app_stopped_unhealthy": true,
 }
 
 // cooldownStackSuffix returns ":"+stack_name when the event's details carry a non-empty `stack_name`

hub/internal/notify/r389_cooldown_grain_test.go

@@ -70,7 +70,8 @@ func TestR389_StackSuffixIsAllowListedAndFailSoft(t *testing.T) {
 func TestR389_TheAllowListHasExactlyOneMember(t *testing.T) {
 	// v0.121.0 widened it again, on purpose (R-636): an OOM storm is one app's event with no digest.
 	// v0.122.0 once more (R-659): a stranded held app is one app's event with no digest.
-	want := []string{"app_hold_no_whole_copy", "app_oom_storm", "app_start_failed", "app_update_held", "app_update_undone"}
+	// v0.123.0 once more (decision 28): an unhealthy stop is one app's event with no digest.
+	want := []string{"app_hold_no_whole_copy", "app_oom_storm", "app_start_failed", "app_stopped_unhealthy", "app_update_held", "app_update_undone"}
 	ok := len(perAppCooldownEvents) == len(want)
 	for _, w := range want {
 		ok = ok && perAppCooldownEvents[w]
@@ -80,7 +81,7 @@ func TestR389_TheAllowListHasExactlyOneMember(t *testing.T) {
 		for k := range perAppCooldownEvents {
 			got = append(got, k)
 		}
-		t.Fatalf("perAppCooldownEvents = %v, want exactly [app_hold_no_whole_copy app_oom_storm app_start_failed app_update_held app_update_undone]. Adding a member is the "+
+		t.Fatalf("perAppCooldownEvents = %v, want exactly [app_hold_no_whole_copy app_oom_storm app_start_failed app_stopped_unhealthy app_update_held app_update_undone]. Adding a member is the "+
 			"fenced act: the backup family's cooldown is coarse ON PURPOSE (R-97a, R-182) so one full "+
 			"disk sends one digest, not one mail per app. Read the fence before widening this.", got)
 	}

hub/internal/notify/templates.go

@@ -383,6 +383,8 @@ func trimRepeatedUsage(reason, targetPath string) string {
 var appNamedMailEvents = map[string]bool{
 	"app_update_undone": true,
 	"app_update_held":   true,
+	// v0.123.0 (`09` §3 decision 28): the box stopped an app that kept crashing / ran out of memory.
+	"app_stopped_unhealthy": true,
 }
 
 // stackNameOf reads `stack_name` from an event's details, "" when absent or unreadable.

hub/internal/notify/testdata/mail_goldens/en/customer_event_app_stopped_unhealthy.txt

@@ -0,0 +1,18 @@
+SUBJECT: [Felhom] Warning: ?: the app was stopped because it kept crashing
+---
+Dear Customer,
+
+Your Felhom system sent the following notification:
+
+?: the app was stopped because it kept crashing
+
+Details:
+- Server: demo-fixture
+- Time: 2026-01-15 10:30
+- Level: Warning
+- Type: app_stopped_unhealthy
+
+If you have any questions, contact your operator.
+
+Best regards,
+Felhom.eu monitoring

hub/internal/notify/testdata/mail_goldens/hu/customer_event_app_stopped_unhealthy.txt

@@ -0,0 +1,18 @@
+SUBJECT: [Felhom] Figyelmeztetés: ?: az alkalmazást leállítottuk, mert újra és újra összeomlott
+---
+Kedves Ügyfél!
+
+A Felhom rendszered a következő értesítést küldte:
+
+?: az alkalmazást leállítottuk, mert újra és újra összeomlott
+
+Részletek:
+- Szerver: demo-fixture
+- Időpont: 2026-01-15 10:30
+- Szint: Figyelmeztetés
+- Típus: app_stopped_unhealthy
+
+Ha kérdésed van, vedd fel a kapcsolatot az üzemeltetővel.
+
+Üdvözlettel,
+Felhom.eu monitoring