feat: compress accrual history into anchor checkpoints - #664
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thlpkee20-wq merged 2 commits intoJul 29, 2026
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Add checkpoint compression that folds N historical schedule entries into a running anchor once the count exceeds checkpoint_threshold. - Add DataKey2::AccrualAnchor and DataKey2::CheckpointThreshold storage keys - Add AccrualAnchor struct with end_idx and claimable_sum fields - Add CHECKPOINT_THRESHOLD_DEFAULT constant (1000) - Add set_checkpoint_threshold / get_checkpoint_threshold public functions - When record_holder_share_transition exceeds threshold, compress oldest entries into an anchor with a pre-computed claimable sum keyed by the highest folded period index - compute_claimable_preview consumes the anchor when the claim cursor advances past the anchor boundary - Both claim functions also consume anchors atomically when LastClaimedIdx crosses the anchor end_idx - Add 8 new tests covering compression, lossless computation, partial claims, threshold config, zero-threshold disable, and default threshold
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Add checkpoint compression that folds N historical schedule entries into a running anchor once the count exceeds checkpoint_threshold.
closes #530