Implement authorized live event replay

crates/remora-api/migrations/0001_live_event_history.sql

@@ -0,0 +1,33 @@
+CREATE TABLE live_event_history_state (
+    singleton BOOLEAN PRIMARY KEY DEFAULT TRUE CHECK (singleton),
+    floor_outbox_id BIGINT NOT NULL DEFAULT 0 CHECK (floor_outbox_id >= 0),
+    progress_poll_not_before TIMESTAMPTZ NOT NULL DEFAULT '-infinity'
+);
+
+INSERT INTO live_event_history_state (singleton) VALUES (TRUE);
+
+CREATE TABLE live_progress_event_state (
+    job_id TEXT PRIMARY KEY REFERENCES jobs (job_id),
+    attempt_id TEXT NOT NULL,
+    fence BIGINT NOT NULL CHECK (fence BETWEEN 1 AND 9007199254740991),
+    progress_present BOOLEAN NOT NULL,
+    completed_bytes BIGINT,
+    total_bytes BIGINT,
+    completed_members BIGINT,
+    total_members BIGINT,
+    updated_at TIMESTAMPTZ NOT NULL,
+    CONSTRAINT live_progress_event_shape_check CHECK (
+        (
+            progress_present
+            AND completed_bytes IS NOT NULL
+            AND completed_members IS NOT NULL
+        )
+        OR (
+            NOT progress_present
+            AND completed_bytes IS NULL
+            AND total_bytes IS NULL
+            AND completed_members IS NULL
+            AND total_members IS NULL
+        )
+    )
+);