Update Last.fm plugin with enhanced documentation and new !lastfm help command

README.md

@@ -294,8 +294,7 @@ Perform IP geolocation lookups with detailed geographic information.
 
 ### 🎵 Last.fm Integration
 
-**🎵 !register [username] and !np**
-Register your Last.fm username and display currently playing tracks.
+**🎵 !register [username] and comprehensive music analytics**
 
 **Features:**
 - Associate Matrix ID with Last.fm username
@@ -304,7 +303,49 @@ Register your Last.fm username and display currently playing tracks.
 
 **Commands:**
 - `!register <username>` - Register your Last.fm username
-- `!np` - Display currently playing track
+- `!np [user]` - Display currently playing track
+- `!recent [user] [limit]` - Show recent tracks (default 10, max 50)
+- `!toptracks [user] [period]` - Show top tracks (overall/7day/1month/3month/6month/12month)
+- `!topartists [user] [period]` - Show top artists
+- `!topalbums [user] [period]` - Show top albums
+- `!loved [user]` - Show recently loved tracks
+- `!profile [user]` - Detailed user profile
+- `!playcount [user]` - Total scrobbles
+- `!scrobbles [user]` - Detailed scrobbling statistics
+- `!compare <user1> <user2>` - Compare musical tastes
+- `!taste [user]` - Top artists with taste-o-meter
+- `!friends [user]` - Show Last.fm friends
+- `!recommend [user]` - Artist recommendations
+- `!similar <artist>` - Find similar artists
+- `!tag <tag>` - Top artists for a tag/genre
+- `!charts` - Global top tracks chart
+- `!tagcloud [user]` - Top genre tags
+- `!now` - What are registered users playing?
+- `!decades [user]` - Favorite decades analysis
+- `!genres [user]` - Top genres/tags
+- `!era <year>` - Popular tracks from a year
+- `!weekly [user]` - Weekly listening report
+- `!monthly [user]` - Monthly listening report
+- `!yearly [user] [year]` - Yearly listening report
+- `!first <artist> [user]` - Find first scrobble of an artist
+- `!concerts [user]` - Upcoming concerts for top artists
+- `!radio <artist>` - Generate playlist based on artist
+- `!mashup <artist1> <artist2>` - Musical connections between artists
+- `!collage [user] [size]` - Top album art URLs
+- `!listening [user]` - Currently listening with album art
+- `!awards [user]` - Milestone achievements
+
+**Examples:**
+```bash
+!register your_lastfm_username
+!np
+!recent 20
+!topartists 7day
+!compare user1 user2
+!similar radiohead
+!tag electronic
+!era 1994
+```
 
 ### ExploitDB Plugin