feat: add db status viewer and db cleanup baseline

backend/app/db.py

@@ -281,6 +281,19 @@ CREATE TABLE IF NOT EXISTS integration_vouchers (
     created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
 );
 
+CREATE TABLE IF NOT EXISTS integration_binary_sources (
+    id BIGSERIAL PRIMARY KEY,
+    source_key TEXT NOT NULL UNIQUE,
+    source_name TEXT NOT NULL,
+    filename TEXT NOT NULL DEFAULT '',
+    mime_type TEXT NOT NULL DEFAULT 'application/octet-stream',
+    content BYTEA NOT NULL,
+    content_sha256 TEXT NOT NULL DEFAULT '',
+    meta_json JSONB NOT NULL DEFAULT '{}'::jsonb,
+    imported_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
 CREATE TABLE IF NOT EXISTS history_revisions (
     id BIGSERIAL PRIMARY KEY,
     scope TEXT NOT NULL DEFAULT 'organization',
@@ -329,18 +342,6 @@ CREATE TABLE IF NOT EXISTS seat_assignment_versions (
     created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
 );
 
-CREATE TABLE IF NOT EXISTS entity_change_events (
-    id BIGSERIAL PRIMARY KEY,
-    entity_type TEXT NOT NULL,
-    entity_id BIGINT NOT NULL,
-    action_type TEXT NOT NULL,
-    revision_no BIGINT NOT NULL,
-    changed_by_user_id BIGINT,
-    changed_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
-    change_reason TEXT NOT NULL DEFAULT '',
-    patch_json JSONB NOT NULL DEFAULT '{}'::jsonb
-);
-
 CREATE SCHEMA IF NOT EXISTS auth;
 
 CREATE TABLE IF NOT EXISTS auth.users (
@@ -534,6 +535,9 @@ ON integration_vouchers (project_code, project_name);
 CREATE UNIQUE INDEX IF NOT EXISTS integration_project_category_mappings_key_idx
 ON integration_project_category_mappings (source_key, normalized_project_key);
 
+CREATE UNIQUE INDEX IF NOT EXISTS integration_binary_sources_source_key_idx
+ON integration_binary_sources (source_key);
+
 CREATE INDEX IF NOT EXISTS member_versions_member_time_idx
 ON member_versions (member_id, valid_from, valid_to);
 
@@ -543,9 +547,6 @@ ON seat_assignment_versions (member_id, valid_from, valid_to);
 CREATE INDEX IF NOT EXISTS history_revisions_scope_created_idx
 ON history_revisions (scope, created_at DESC);
 
-CREATE INDEX IF NOT EXISTS entity_change_events_entity_idx
-ON entity_change_events (entity_type, entity_id, changed_at DESC);
-
 DO $$
 BEGIN
     IF NOT EXISTS (
@@ -611,6 +612,9 @@ ALTER TABLE auth.login_audit_logs ADD COLUMN IF NOT EXISTS user_id BIGINT NULL R
 ALTER TABLE auth.login_audit_logs ADD COLUMN IF NOT EXISTS failure_reason TEXT;
 ALTER TABLE auth.login_audit_logs ADD COLUMN IF NOT EXISTS ip_address INET;
 ALTER TABLE auth.login_audit_logs ADD COLUMN IF NOT EXISTS user_agent TEXT;
+
+DROP INDEX IF EXISTS entity_change_events_entity_idx;
+DROP TABLE IF EXISTS entity_change_events;
 """