Merge branch 'feature/ops-02-zentrale-statusseite' into feature/qa-09-barrierefreiheits-audit

# Conflicts:
#	DEVLOG.md
#	scripts/reset-test-env.sh

migrations/0006_status_page.down.sql

@@ -0,0 +1,2 @@
+DROP TABLE status_history;
+DROP TABLE status_targets;

migrations/0006_status_page.up.sql

@@ -0,0 +1,15 @@
+-- Zentrale Statusseite (OPS-02, siehe core-kanban/tickets/OPS-02.md) —
+-- ueberwachte Module und der Verlauf ihrer Statusaenderungen.
+CREATE TABLE status_targets (
+    name       TEXT PRIMARY KEY,
+    health_url TEXT NOT NULL
+);
+
+CREATE TABLE status_history (
+    id         UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name       TEXT NOT NULL,
+    status     TEXT NOT NULL,
+    changed_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE INDEX status_history_name_idx ON status_history (name, changed_at DESC);