fix: remove hive-bash-mcp cargo dep from hive-ag3nt — add minimal bash_tasks.rs for get_loose_ends

hive-ag3nt/src/mcp.rs

@@ -739,7 +739,7 @@ impl AgentServer {
             let mut out = annotate_retries(render_loose_ends(&loose_ends), retries);
             // Append any local bash tasks still in pending/running state so
             // the agent sees all outstanding work in one call.
-            let active = hive_bash_mcp::runner::active_tasks();
+            let active = crate::bash_tasks::active_tasks();
             if !active.is_empty() {
                 use std::fmt::Write as _;
                 let _ = write!(out, "\n\n{} active bash task(s):", active.len());