woah

so what are these? auto gc and typed observation (because some flett shit is depending on ts)

Co-authored-by: Copilot <[email protected]>

wakey-control-plane/migrations/20260501000000_observation_snapshots.sql

@@ -0,0 +1,16 @@
+CREATE TABLE agent_observation_snapshots (
+    agent_id TEXT NOT NULL,
+    kind TEXT NOT NULL,
+    last_dump_unix INTEGER NOT NULL,
+    PRIMARY KEY(agent_id, kind)
+);
+
+CREATE TABLE agent_observation_snapshot_keys (
+    agent_id TEXT NOT NULL,
+    kind TEXT NOT NULL,
+    observation_key TEXT NOT NULL,
+    PRIMARY KEY(agent_id, kind, observation_key)
+);
+
+CREATE INDEX agent_observation_snapshot_keys_observation_idx
+    ON agent_observation_snapshot_keys(observation_key);