fix: preserve photo drafts while reopening Today progress

tests/test_conversation_photo_drafts.py

@@ -168,6 +168,35 @@ const drafts = createCoordinator({{store, lanes:{{issue:{{controller}}}}}});
     assert json.loads(run_node(script)) == ["save:1:first.webp", "restore:second.webp"]
 
 
+def test_coordinator_clear_does_not_delete_the_durable_draft_during_reopen():
+    script = f"""
+const createCoordinator = require({json.dumps(str(COORDINATOR))});
+const records=new Map(); let current=[]; let drafts; const restored=[];
+const key=target=>target.kind+':'+target.number;
+const store={{
+  save:async(target,attachments)=>attachments?.length?records.set(key(target),attachments):records.delete(key(target)),
+  load:async target=>records.get(key(target))||null,
+  remove:async target=>records.delete(key(target)),
+}};
+const controller={{
+  serialize:async()=>current,
+  restore:value=>{{current=value;restored.push(value[0].filename);}},
+  clear:()=>{{current=[];drafts.checkpoint('today').catch(()=>{{}});}},
+}};
+drafts=createCoordinator({{store,lanes:{{today:{{controller}}}}}});
+const target={{kind:'issue',repository:'stackchain/dashboard',number:1054}};
+(async()=>{{
+  await drafts.open('today',target);
+  current=[{{filename:'proof.webp',contentType:'image/webp',blob:new Blob(['proof'])}}];
+  await drafts.checkpoint('today');
+  await drafts.switchTo('today',target);
+  await Promise.resolve();
+  process.stdout.write(JSON.stringify({{restored,saved:(await store.load(target))?.[0]?.filename||null}}));
+}})().catch(error=>{{console.error(error);process.exit(1);}});
+"""
+    assert json.loads(run_node(script)) == {"restored": ["proof.webp"], "saved": "proof.webp"}
+
+
 def test_my_work_wires_durable_photo_drafts_into_all_conversation_boundaries():
     dashboard = DASHBOARD.read_text()
     html = INDEX.read_text()