docs: update jobs command documentation

Author: ssadedin

docs/Commands/jobs.md

@@ -1,13 +1,41 @@
 ## The jobs command
 
-
 ## Synopsis
 
-    
-    
-        bpipe jobs
-    
+    bpipe jobs [options]
 
 ### Description
 
-Display a list of currently running Bpipe jobs.
+Display a list of currently running and recently completed Bpipe jobs.
+
+### Options
+
+    -all        Show all jobs, including completed ones
+    -age <n>    Show jobs up to n hours old (default: 24)
+    -m <str>    Match given substring on directory name
+    -watch      Show continuously updated display
+    -sleep <n>  Sleep time in ms when watching continuously (default: 10000)
+    -u          Only show each directory once with latest result
+
+### Environment Variables
+
+    BPIPE_DB_DIR    Directory where Bpipe stores its database of jobs and logs
+                    (default: ~/.bpipedb)
+
+### Examples
+
+    # Show all jobs
+    bpipe jobs -all
+    
+    # Show jobs from last week
+    bpipe jobs -age 168
+    
+    # Show only jobs from directories containing "analysis"
+    bpipe jobs -m analysis
+    
+    # Monitor jobs continuously
+    bpipe jobs -watch
+    
+    # Use custom database location
+    export BPIPE_DB_DIR=/data/bpipe/db
+    bpipe jobs