fix(containers): periodically restart crashed stack members at runtime (#16/#17)

immich_server/redis/postgres + indeedhub-* are multi-container stack members
whose sub-container app_ids are NOT in package_data, so the health monitor skips
them as "orphans" and never restarts them when they exit — Immich/IndeedHub stay
down until the next reboot (the boot-only start_stopped_stack_containers was the
only recovery). Spawn a 120s supervisor that reuses that same recovery at
runtime. It cheaply skips already-running containers and honours the user-stopped
list (set on every container by package.stop), so it only revives genuinely
crashed members and never fights a user stop.

cargo check clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

core/archipelago/src/main.rs

@@ -297,6 +297,31 @@ async fn main() -> Result<()> {
         });
     }
 
+    // Periodically restart crashed multi-container stack members (immich,
+    // indeedhub, …) at RUNTIME, not just at boot. The health monitor skips them
+    // as "orphans" because the sub-container app_ids (e.g. immich_server) aren't
+    // in package_data, so without this a crashed immich_server / indeedhub-api
+    // never comes back until the next reboot (#16/#17). Reuses the boot
+    // recovery, which cheaply skips already-running containers and respects the
+    // user-stopped list, so this only acts on genuinely-down stack members.
+    {
+        let data_dir = config.data_dir.clone();
+        tokio::spawn(async move {
+            let mut tick = tokio::time::interval(Duration::from_secs(120));
+            tick.tick().await; // consume the immediate tick; boot recovery covers t0
+            loop {
+                tick.tick().await;
+                let report = crash_recovery::start_stopped_stack_containers(&data_dir).await;
+                if report.recovered > 0 {
+                    info!(
+                        "🔄 Stack supervisor: restarted {} crashed stack member(s) (failed: {:?})",
+                        report.recovered, report.failed
+                    );
+                }
+            }
+        });
+    }
+
     // Spawn disk space monitor (warns at 85%, auto-cleans at 90%)
     disk_monitor::spawn_disk_monitor(config.data_dir.clone());