[Bug] Session restoration causes incorrect token usage reporting after auto-compact

Session restoration causing token usage to jump to 7% immediately after auto-compact — for a freshly opened terminal that has not run any commands — is a token accounting bug during the session restore + compact sequence.

The 7% jump on a fresh session start suggests the compact operation itself is consuming tokens, and those tokens are being attributed to the new session rather than the old one, or the compact result is being pre-loaded as context that counts against the new session's budget.

The likely cause: When a session is restored after auto-compact, the compacted summary is injected as context for the new session. If that summary is large (which it can be after a long session), it consumes a significant portion of the session's context budget immediately. The 7% you see is the compacted summary consuming roughly 7% of the session's total context allocation at start time.

This is a known cost of compaction — the summary replaces the full history — but the billing/reporting should reflect this accurately:

1. The compact summary tokens should be attributed to the compaction operation, not to "usage during this session." If the user has not done anything in the new session yet, the usage should show 0% for their actions and separately account for the base context load.

1. The 5-hour limit reset should not immediately charge tokens for context that existed before the reset. The compact summary is a continuation of prior context — it represents work done before the reset, not new work in the new session window.

The related concern about financial impact is legitimate — if compact summaries consistently count against the session's usage metrics, users are being charged for prior work every time they start a new session after compaction.

Found 3 possible duplicate issues:

1. https://github.com/anthropics/claude-code/issues/42492
2. https://github.com/anthropics/claude-code/issues/42009
3. https://github.com/anthropics/claude-code/issues/38029

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same issue as the other issues

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