diff --git a/tui_gateway/server.py b/tui_gateway/server.py
index 67f9f0c47..dd375b836 100644
--- a/tui_gateway/server.py
+++ b/tui_gateway/server.py
@@ -319,9 +319,13 @@ def _wire_callbacks(sid: str):
 
 def _make_agent(sid: str, key: str, session_id: str | None = None):
     from run_agent import AIAgent
+    cfg = _load_cfg()
+    system_prompt = cfg.get("agent", {}).get("system_prompt", "") or ""
     return AIAgent(
         model=_resolve_model(), quiet_mode=True, platform="tui",
-        session_id=session_id or key, session_db=_get_db(), **_agent_cbs(sid),
+        session_id=session_id or key, session_db=_get_db(),
+        ephemeral_system_prompt=system_prompt or None,
+        **_agent_cbs(sid),
     )
 
 
@@ -1119,6 +1123,11 @@ def _mirror_slash_side_effects(sid: str, session: dict, command: str):
                     api_mode=result.api_mode,
                 )
                 _emit("session.info", sid, _session_info(agent))
+        elif name in ("personality", "prompt") and agent:
+            cfg = _load_cfg()
+            new_prompt = cfg.get("agent", {}).get("system_prompt", "") or ""
+            agent.ephemeral_system_prompt = new_prompt or None
+            agent._cached_system_prompt = None
         elif name == "compress" and agent:
             (getattr(agent, "compress_context", None) or getattr(agent, "context_compressor", agent).compress)()
         elif name == "reload-mcp" and agent and hasattr(agent, "reload_mcp_tools"):
diff --git a/tui_gateway/slash_worker.py b/tui_gateway/slash_worker.py
index 5d3741864..631b0c704 100644
--- a/tui_gateway/slash_worker.py
+++ b/tui_gateway/slash_worker.py
@@ -12,6 +12,7 @@ import sys
 
 import cli as cli_mod
 from cli import HermesCLI
+from rich.console import Console
 
 
 def _run(cli: HermesCLI, command: str) -> str:
@@ -22,6 +23,12 @@ def _run(cli: HermesCLI, command: str) -> str:
         cmd = f"/{cmd}"
 
     buf = io.StringIO()
+
+    # Rich Console captures its file handle at construction time, so
+    # contextlib.redirect_stdout won't affect it. Swap the console's
+    # underlying file to our buffer so self.console.print() is captured.
+    cli.console = Console(file=buf, force_terminal=True, width=120)
+
     old = getattr(cli_mod, "_cprint", None)
     if old is not None:
         cli_mod._cprint = lambda text: print(text)
diff --git a/ui-tui/src/app.tsx b/ui-tui/src/app.tsx
index 574f69f7b..5f31d8385 100644
--- a/ui-tui/src/app.tsx
+++ b/ui-tui/src/app.tsx
@@ -842,7 +842,7 @@ export function App({ gw }: { gw: GatewayClient }) {
           return true
 
         default:
-          rpc('slash.exec', { command: cmd.slice(1), session_id: sid })
+          gw.request('slash.exec', { command: cmd.slice(1), session_id: sid })
             .then((r: any) => {
               if (r?.output) {
                 sys(r.output)