Document reply / reply-with-quote support in the README

README.md

@@ -22,6 +22,8 @@ While the agent works you see one `⚙️ Working…` message that updates with
 
 It can also send files back. When you ask for a screenshot, a generated file, or a rendered report, the agent uses its `send` tool to attach the file directly — photos appear inline, other files arrive as documents.
 
+Reply to any of my messages (or "reply with quote" a specific part) and I'll see what you're answering to — useful for coming back to something from earlier in the day.
+
 Commands: `/status`, `/new`, `/stop`, `/jobs`, `/cancel <id>`, `/compact`.
 
 ## Scheduling
@@ -102,3 +104,4 @@ Run `npm run dev` with a real bot and walk through every line:
 16. Ask "run this on example.com: `async (page) => { await page.goto('https://example.com'); return await page.title(); }`" → reply says `Example Domain`. Exercises `browser_run_code_unsafe`.
 17. Restart with `PLAYWRIGHT_ENABLED=false`. Startup log shows `playwright tools disabled`; no `browser_*` tools appear in the model's tool list.
 18. Ask "write a short poem to poem.txt and send it to me" → a `.txt` document attachment arrives with the poem inside, and the reply confirms with one line.
+19. Reply to one of the bot's earlier messages with a follow-up like "what did you mean by that?" → the answer references that specific message, not the most recent one. Then "reply with quote" a specific phrase from a bot message → the answer references the quoted phrase.