refactor(commands): rename status command to list and update related references

feat(feishu): update card schema to 2.0 and simplify approval card structure

docs(feishu): add documentation for card json schema 2.0 changes

orchestrator/agent.py

@@ -49,7 +49,7 @@ Bot command prefix: {prefix}
 - Close/switch sessions: "关掉第一个" → run_command("{prefix}close 1")
 - Change routing mode: "切换到直连模式" → run_command("{prefix}direct")
 - Set a reminder: "10分钟后提醒我" → run_command("{prefix}remind 10m 提醒我")
-- Check status: "看看现在有哪些 session" → run_command("{prefix}status")
+- Check status: "看看现在有哪些 session" → run_command("{prefix}list")
 - Any other command the user would type manually
 
 Available bot commands (pass verbatim to run_command):
@@ -59,7 +59,7 @@ Available bot commands (pass verbatim to run_command):
   {prefix}perm <mode> [conv_id] — permission mode: default, edit, plan, bypass
   {prefix}direct              — direct mode (bypass LLM for CC messages)
   {prefix}smart               — smart mode (LLM routing, default)
-  {prefix}status              — list sessions
+  {prefix}list               — list sessions
   {prefix}remind <Ns|Nm|Nh> <msg> — one-shot reminder
   {prefix}tasks               — list background tasks