dsh-opencode-go-quota: Display OpenCode Go Quota Beside the DSH Web Input Box

`dsh-opencode-go-quota` is a DSH web plugin designed to address the issues of scattered OpenCode Go quotas, lack of intuitive monitoring, and delayed quota warnings during agent requests. Its core functionalities include displaying a dynamic progress ring next to the chat input box, which shows real-time quota remaining for 5-hour, weekly, and monthly periods. The ring's color changes based on urgency, supports clicking to switch windows and automatic refresh. When the quota reaches a threshold, the plugin injects a one-time reminder into the system prompt as the agent enters a new tier, avoiding repetitive disruptions. The plugin retrieves keys by reading the local `auth.json` or environment variables, calls official APIs to fetch data, and offers multiple configuration options to customize warning thresholds and caching durations. Installation is straightforward, supporting additions via GitHub or local paths.