DeepSeek Harness Sidebar Plugin: CCF Conference Deadline Countdown

`sshhhll002/dsh-ccfddl` is a conference countdown plugin integrated into the left sidebar of DeepSeek Harness. It fetches CCF conference data from `ccfddl`, supports displaying countdowns by urgency (red/orange/green/gray), and provides settings such as filtering by field and manual refresh. The installation command is `dsh plugin --profile web add github:sshhhll002/dsh-ccfddl`. After restarting `dsh web`, you can view or minimize the conference deadlines in the left sidebar. This plugin is an unofficial project, and the data source is MIT-licensed.