Small Fixes and Improvements

A few smaller changes that shipped this week:

• Chat keeps your drafts. Start typing a message, go look at something else or reload the page, and it's still there when you come back, along with any @campaign and /skill chips and attached files. Each conversation keeps its own draft.
• If your connection drops while the agent is answering, chat reconnects by itself and picks up the answer where it was. Sending again is safe too: the agent recognises the same message and shows you the answer it already gave rather than doing the work twice.
• When the agent builds a Meta ad, it runs on Instagram under the right identity automatically. It uses the client's own Instagram account when there is one, and otherwise sets up a Page-backed account so the ad still runs on Instagram, and tells you how to switch to the real account later.
• The agent can tell you the exact pixel size of an image you attach in chat.
• Ask how campaigns are doing and the agent always pulls fresh numbers, even if you asked the same question earlier in the conversation.
• The ad library has its own address at /ad-library. Old links and bookmarks still take you there.
• The Top Creatives display settings use plainer wording, and say exactly when a metric turns green: when it's 15% better than the average of the ads you're looking at, or meets your target.