fix: add deduplication to prevent double notifications

fix: prevent duplicate notifications + add input logging

fix: handle JSON whitespace in config parsing + add trace logging

Merge pull request #8 from gongwu-ai/claude/smart-stop-handler-iFj8Z

fix: update transcript parsing for new Claude Code format

Merge pull request #7 from gongwu-ai/claude/smart-stop-handler-iFj8Z

feat: check both anthropic and httpx[socks] packages

feat: send debug errors to Feishu instead of silent fail

feat: auto-detect Python path at install time

Merge pull request #6 from gongwu-ai/claude/smart-stop-handler-iFj8Z

docs: add httpx[socks] as required dependency

Merge pull request #5 from gongwu-ai/claude/smart-stop-handler-iFj8Z

refactor: use Anthropic SDK instead of raw HTTP

Merge pull request #4 from gongwu-ai/claude/smart-stop-handler-iFj8Z

fix: use full endpoint URL and increase timeout to 15s