Add /me, /slap, /q, /topic, tab completion, bold events

- /me <action> sends CTCP ACTION
- /slap <nick> slaps with a large trout
- /q <nick> sets query target, /q clears it
- /topic to view/set channel topic
- Tab completion for nicks (cycling, : suffix at line start)
- Nick list tracking via NAMES/JOIN/PART/QUIT/NICK
- Bold formatting for joins, parts, quits, mode changes
- Incoming CTCP ACTION displayed as * nick action
- Updated README with all commands and features

README.md

@@ -8,8 +8,10 @@ A lightweight terminal IRC client written in C with automatic charset conversion
 - **Window levels** — isolated windows with independent 500-line scrollback:
   - Window 1: Status and private messages
   - Windows 2–9: Channels
-- **Status bar** — shows current window, channel, nick prefix (@/+), and channel modes
+- **Status bar** — shows current window, channel, nick prefix (@/+), channel modes, and activity indicator
 - **UTF-8 terminal support** — full multi-byte input editing
+- **Tab completion** — nick completion with cycling (`: ` suffix at line start, space mid-line)
+- **Query mode** — `/q nick` to set a default PM target
 - **CTCP VERSION** reply with OS info
 - **SIGWINCH** handling (terminal resize)
 - **Ident** — works with system identd on port 113
@@ -37,6 +39,7 @@ Port defaults to 6667.
 | Key | Action |
 |-----|--------|
 | ESC+1–9 | Switch window |
+| Tab | Nick completion (cycle with repeated Tab) |
 | Ctrl-A | Beginning of line |
 | Ctrl-E | End of line |
 | Ctrl-U | Kill to beginning (yank buffer) |
@@ -54,15 +57,21 @@ Port defaults to 6667.
 | `/join #channel` | Join channel (assigned to current window) |
 | `/part [#channel]` | Part channel (defaults to current) |
 | `/msg <target> <text>` | Send private message |
+| `/q <nick>` | Set query target (type text to send to them) |
+| `/q` | Clear query target |
+| `/me <action>` | Send action to channel/query |
+| `/slap <nick>` | Slap with a large trout |
 | `/nick <newnick>` | Change nickname |
 | `/mode <target> <modes>` | Set mode |
+| `/topic [#channel]` | View topic |
+| `/topic #channel <text>` | Set topic |
 | `/names [#channel]` | List users in channel |
 | `/whois <nick>` | WHOIS query |
 | `/wii <nick>` | Extended WHOIS (queries remote server) |
 | `/quit [reason]` | Quit (default: "See you later") |
 | `/raw <line>` | Send raw IRC command |
 
-Typing text without a `/` prefix sends to the channel on the current window.
+Typing text without a `/` prefix sends to the channel on the current window (or query target on window 1).
 
 ## Window Workflow