chore(chat): clean up legacy state machine and fix bubble alignment

- Remove redundant `loadingMoreHistory` and `ready` states from chat machine, consolidating history loading flow
- Add `align-self: flex-start` to chat row container for proper alignment
- Clean up commented-out margin rules in text bubble styles
- Update deploy script GIT_REMOTE from "server" to "test"

src/app/chat/components/chat-area.module.css

@@ -39,6 +39,7 @@
   display: flex;
   flex-direction: row;
   align-items: flex-start;
+  align-self: flex-start;
   gap: var(--spacing-1, 4px);
 }