dsh-api-usage-bar

After a conversation in the DSH Web UI, you are usually shown a single cumulative token figure. How much of that came from cache hits, how much was uncached input, and how much was output often requires digging through logs. dsh-api-usage-bar condenses that into a three-segment color bar below the input box: green for cached reads, yellow for uncached input (including cache writes), and blue for output, with compact numbers beside it and precise per-segment counts on hover.

The bar renders entirely on the client side. It reads the tokenUsage session projection already present in the browser and makes no network requests, touches no API key, never queries account balance, and does not modify anything sent to the model. The three segments are normalized against total tokens, so the chart shows the usage composition of a single session rather than an account-quota gauge, and it will never fabricate a percentage against a non-existent denominator.

It adds no new model tools, changes no system prompt, and costs zero extra tokens. It is a pure visual aid layer, ideal for DeepSeek Harness developers who want to judge cache-hit ratios and usage structure at a glance without leaving the Web UI, particularly those who care about prompt-caching strategy and want a direct view of where tokens go.