config: >rehash command to reload rustbot.conf live (channels/nick/prefix/verbose/modules) without a restart

README.md

@@ -138,9 +138,24 @@ on), `password`, `sasl_user`, `sasl_pass`, `name` (a network's log label), and
 for the board's channel "join" links, e.g. `https://web.libera.chat/`), and
 `karma_url` (public web board —
 enables the `karmaweb` command and a link on the `karma`/`karmabottom` top
-lists; empty disables both). Whole-line `#`/`;` comments only —
+lists; empty disables both), and `admin` (nicks allowed to run `rehash`; see
+[Live reload](#live-reload-rehash)). Whole-line `#`/`;` comments only —
 inline comments would clash with channel `#`s.
 
+### Live reload (rehash)
+
+Editing `rustbot.conf` doesn't require a restart. An admin sends **`rehash`**
+(the command prefix + `rehash`) in a channel or PM and the bot re-reads the
+file and hot-applies this network's section:
+
+- **live**: `channels` (JOIN new / PART removed), `nick`, `prefix`, `verbose`,
+  and `locale` / `karma_url` / `webchat` (modules are re-instantiated).
+- **needs a restart**: `server`, `port`, `tls`, SASL — the summary says so.
+
+Set `admin = yournick` (comma/space list) to authorize; unauthorized attempts
+are ignored (and logged). Adding a *new* module or a whole new `[network]`
+still needs a rebuild/restart — new compiled code can't load at runtime.
+
 ### Locales
 
 `locale` sets a network's language, so a community sees the bot in its own