Add full sortof codebase: API, drain workers, frontend, schema, specs

init/03_mod_id_conflicts.sql

@@ -0,0 +1,13 @@
+-- Records every mod_id eviction the worker performs (one wsid claiming a mod_id
+-- previously held by another). Used by /api/sort to warn the user when their
+-- input includes multiple wsids that declare the same mod_id (PZ silently
+-- loads only one; the others' folders end up dead weight on the server).
+CREATE TABLE IF NOT EXISTS mod_id_conflicts (
+    mod_id          TEXT NOT NULL,
+    evicting_wsid   TEXT NOT NULL,
+    evicted_wsid    TEXT NOT NULL,
+    recorded_at     TIMESTAMPTZ NOT NULL DEFAULT now(),
+    PRIMARY KEY (mod_id, evicting_wsid, evicted_wsid)
+);
+CREATE INDEX IF NOT EXISTS mod_id_conflicts_evicted_idx  ON mod_id_conflicts (evicted_wsid);
+CREATE INDEX IF NOT EXISTS mod_id_conflicts_evicting_idx ON mod_id_conflicts (evicting_wsid);