feat: add workspace-isolated toolhost runtime and capability-gap skill loop

configs/env.sample

@@ -1,8 +1,15 @@
 MESSAGE_CHANNEL=telegram
 LOG_LEVEL=info
+AGENT_WORKSPACE_DIR=./workspace/agent_runtime
 SOUL_PATH=./bot_context/soul.md
 SKILLS_DIR=./skills
 REACT_MAX_STEPS=4
+TOOL_CALL_TIMEOUT_SEC=15
+TOOL_OUTPUT_MAX_CHARS=4000
+ENABLE_CAPABILITY_GAP=true
+AUTO_SKILL_DIR=./skills
+GAP_DRAFT_TRIGGER_COUNT=3
+GAP_CLUSTER_LOOKBACK_HOURS=168
 
 TELEGRAM_BOT_TOKEN=
 TELEGRAM_POLL_TIMEOUT_SECONDS=30
@@ -16,6 +23,6 @@ LLM_API_KEY=
 LLM_MODEL=gpt-4o-mini
 
 SQLITE_PATH=./data/laodingbot.db
-ALLOWED_DIRS=./workspace,./data
-ALLOWED_COMMANDS=pwd,ls,cat,echo,grep,find,head,tail
+ALLOWED_DIRS=./workspace,./data,./skills
+ALLOWED_COMMANDS=pwd,ls,cat,echo,grep,find,head,tail,go,curl,curl.exe
 WORK_DIR=./workspace