test(schema): exercise v121 bootstrap coverage (#3489)

test/schema-bootstrap-coverage.test.ts

@@ -256,6 +256,11 @@ test('applyForwardReferenceBootstrap covers every forward reference declared in
       ALTER TABLE pages DROP COLUMN IF EXISTS generation;
       ALTER TABLE pages DROP COLUMN IF EXISTS contextual_retrieval_mode;
       ALTER TABLE pages DROP COLUMN IF EXISTS corpus_generation;
+
+      DROP INDEX IF EXISTS idx_timeline_event_dedup;
+      DROP INDEX IF EXISTS idx_timeline_event_page;
+      ALTER TABLE timeline_entries DROP CONSTRAINT IF EXISTS timeline_entries_event_page_id_fkey;
+      ALTER TABLE timeline_entries DROP COLUMN IF EXISTS event_page_id;
     `);
 
     // Note: we don't strip sources.archived* here because they're inline in the
@@ -264,6 +269,14 @@ test('applyForwardReferenceBootstrap covers every forward reference declared in
     // The bootstrap's needsPagesBootstrap branch recreates sources without the
     // archive columns; the new needsSourcesArchive probe adds them.
 
+    const { rows: preBootstrapTimelineEventPageId } = await db.query(`
+      SELECT 1 FROM information_schema.columns
+      WHERE table_schema = 'public'
+        AND table_name = 'timeline_entries'
+        AND column_name = 'event_page_id'
+    `);
+    expect(preBootstrapTimelineEventPageId).toHaveLength(0);
+
     // Run bootstrap in isolation (NOT initSchema). This is what we're testing.
     await (engine as any).applyForwardReferenceBootstrap();
 
@@ -328,6 +341,11 @@ test('after bootstrap, PGLITE_SCHEMA_SQL replays without crashing on missing for
       ALTER TABLE pages DROP COLUMN IF EXISTS import_filename;
       ALTER TABLE pages DROP COLUMN IF EXISTS salience_touched_at;
       ALTER TABLE pages DROP COLUMN IF EXISTS emotional_weight;
+
+      DROP INDEX IF EXISTS idx_timeline_event_dedup;
+      DROP INDEX IF EXISTS idx_timeline_event_page;
+      ALTER TABLE timeline_entries DROP CONSTRAINT IF EXISTS timeline_entries_event_page_id_fkey;
+      ALTER TABLE timeline_entries DROP COLUMN IF EXISTS event_page_id;
     `);
 
     // Bootstrap, then schema replay. Either step crashing fails the test.