context_window block shows cumulative tokens, not actual context usage #823

The statusline's 🧠 block (context window usage) displays misleading information on long sessions.

Problem

The percentage calculation uses context_window.total_input_tokens which is a cumulative session counter — it never resets, even after Claude Code's "compact" operation.

This means:

• On long sessions, the percentage grows unbounded (I've seen 1000%+)
• After compact, it still shows high usage even though context was cleared
• The displayed number doesn't represent actual context window utilization

Expected behavior

The block should show current context window usage — how much of the model's context limit is currently occupied.

Technical details

In statusline.ts, the calculation:

const percentage = Math.round((inputTokens / contextLimit) * 100);

Uses cumulative total_input_tokens rather than current context consumption.

Also note: the fallback path in data-loader.ts has clamping (Math.min(100, ...)), but the primary hook path doesn't, allowing >100% display.

Workaround

Currently filtering out this block entirely via sed in my statusline script.