Initial project snapshot

backend/migrations/000019_mesh_latest_link_observation_key.up.sql

@@ -0,0 +1,11 @@
+ALTER TABLE mesh_latest_links
+    ADD COLUMN IF NOT EXISTS observation_key TEXT NOT NULL DEFAULT 'default';
+
+ALTER TABLE mesh_latest_links
+    DROP CONSTRAINT IF EXISTS mesh_latest_links_pkey;
+
+ALTER TABLE mesh_latest_links
+    ADD PRIMARY KEY (cluster_id, source_node_id, target_node_id, observation_key);
+
+CREATE INDEX IF NOT EXISTS idx_mesh_latest_links_cluster_observed
+    ON mesh_latest_links(cluster_id, observed_at DESC);