[St0nefish]

Summary

The Ultra plan has no five-hour window, so the statusline's session-cost fallback (shown when no five_hour limit exists) became permanent, and the extra-usage segment stayed up all month once any credit had been spent.

• The cost estimate is Claude Code's own list-price figure for the session (not billed on a subscription). It now always shows when above $0, dim with a ~$ prefix and no colour thresholds.
• The ⊕ $used/$limit extra-usage segment now shows only while credits are in play: any reported limit is at 100%, the monthly cap is hit (red), or used_credits rose since the last poll (held for 10 minutes). With an unlimited cap it shows $used alone.
• The usage endpoint is polled every 60s while credits are in play, every 5 minutes otherwise.
• README and Extra type updated; plugin bumped to 3.4.1 (statusline is Claude-only, no Copilot mirror).

Caveats

• The new logic in hooks/register.tsx has no tests and has not been exercised live, so the segment has not been seen appearing.
• The "limit reports 100% when exhausted" trigger is an assumption from Anthropic's usage-credits docs, not observed. The used-credits-rose signal is the backup.
• Prepaid balance is not shown: spend.balance was null when checked and its shape is unknown.

Test plan

• bash .github/scripts/validate-all.sh passes (703 plugin tests, structure, frontmatter, markdown, shell lint, CI parity)
• Independent review of the diff; three small findings fixed
• Confirm ⊕ appears and ~$ stays dim after hitting the weekly limit

🤖 Generated with Claude Code