Defer JOIN until NickServ login confirmed (fixes +r channel 477)

bot.py

@@ -173,8 +173,13 @@ class IRCBot:
             time.sleep(backoff)
             backoff = min(backoff * 2, 300)
 
+    def _join_channel(self):
+        log.info("Joining %s", CHANNEL)
+        self._send_raw(f"JOIN {CHANNEL}")
+
     def _event_loop(self):
         registered = False
+        joined = False
         for line in self._read_lines():
             log.debug("<< %s", line)
             prefix, command, params = parse_message(line)
@@ -183,15 +188,33 @@ class IRCBot:
                 self._send_raw(f"PONG :{params[-1] if params else ''}")
                 continue
 
-            # 376 = end of MOTD, 422 = no MOTD; either means we can join.
+            # 376 = end of MOTD, 422 = no MOTD; either means we're registered.
             if command in ("376", "422") and not registered:
                 registered = True
                 if NICKSERV_PASS:
+                    # Identify first, then wait for the login confirmation
+                    # below before joining. +r channels reject us until the
+                    # NickServ login has actually landed, so joining now races.
                     self.send_privmsg("NickServ", f"IDENTIFY {NICKSERV_PASS}")
-                log.info("Joining %s", CHANNEL)
-                self._send_raw(f"JOIN {CHANNEL}")
+                    log.info("Identifying with NickServ; join deferred until login")
+                else:
+                    self._join_channel()
+                    joined = True
                 continue
 
+            # 900 RPL_LOGGEDIN, or the NickServ "now identified" notice —
+            # either confirms login is complete, so it's safe to join +r chans.
+            if not joined and registered and NICKSERV_PASS:
+                identified = command == "900" or (
+                    command == "NOTICE"
+                    and prefix.lower().startswith("nickserv!")
+                    and "now identified" in (params[-1].lower() if params else "")
+                )
+                if identified:
+                    self._join_channel()
+                    joined = True
+                    continue
+
             # Nick already in use — try a variant so we still connect.
             if command == "433":
                 global NICK

memory.md

@@ -17,11 +17,16 @@ Durable memory for this project. Read at session start, update before session en
 
 ## Open questions / TODOs
 
-- [ ] Live-test against Libera (join `#r.trees`, exercise commands). Not yet run.
+- [ ] Exercise the `!` commands live in-channel (connect + join verified; command
+      round-trip not yet tested with a second client).
 - [ ] Decide whether `!delquote` should be restricted to ops/admins (currently
       anyone can delete). Fine for a trusted channel; revisit if abused.
-- [ ] Consider registering the `treesquotes` nick with NickServ if the channel
-      blocks unregistered users.
+
+## Resolved
+
+- `#r.trees` is `+r` (registered-nicks-only). Nick `treesquotes` is registered &
+  NickServ-verified under megaproxy@gmail.com. Password lives in gitignored
+  `config.env` (`IRC_NICKSERV_PASS`). Bot identifies and joins successfully.
 
 ## Session log
 
@@ -30,7 +35,11 @@ Durable memory for this project. Read at session start, update before session en
 - Wrote `bot.py`: stdlib IRC client (TLS, PING/PONG, reconnect, nick fallback),
   `QuoteStore` SQLite wrapper, and `!` command handlers.
 - Added `README.md`, `config.example.env`; gitignored `quotes.db`/`config.env`.
-- Syntax-checked with `py_compile` (Python 3.12.3). Not yet live-tested on IRC.
+- Syntax-checked with `py_compile` (Python 3.12.3).
+- Live-tested against Libera: discovered `#r.trees` is `+r`. Registered/verified
+  the `treesquotes` nick. Fixed a join race — bot was sending JOIN before the
+  NickServ login landed and getting bounced (477); now defers JOIN until the
+  `900`/"now identified" confirmation. Verified join succeeds (got 353/366).
 
 ## External references