huge blog refactor

tidying up data structures; improvements to blog admin UI/UX, etc.

controller/schema-migration/000-init.sql

@@ -133,12 +133,12 @@ CREATE TABLE arimelody.blogpost (
     description TEXT NOT NULL,
     visible BOOLEAN NOT NULL DEFAULT FALSE,
     created_at TIMESTAMP NOT NULL DEFAULT current_timestamp,
-    modified_at TIMESTAMP,
     author UUID NOT NULL, 
     markdown TEXT NOT NULL,
-    html TEXT NOT NULL,
     bluesky_actor TEXT,
-    bluesky_post TEXT
+    bluesky_record TEXT,
+    fediverse_account TEXT,
+    fediverse_status TEXT
 );
 ALTER TABLE arimelody.blogpost ADD CONSTRAINT blogpost_pk PRIMARY KEY (id);