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9d5eea2b41
Add the first end-to-end coverage of the oracle's RecordTick path, which previously existed only as native unit tests: - amm_twap_observations_accumulate_across_swaps_and_yield_time_weighted_average: drives swaps + RecordTick across simulated time, then checks the cumulative accumulator and the consulted time-weighted average. - amm_twap_record_tick_sampling_guard_skips_calls_below_min_interval: exercises the min-interval sampling guard through the real instruction path. Running RecordTick through the zkVM surfaced that committing the oracle-owned ~100 KiB observations account costs ~50.9M cycles — over the 2^25 (~33.5M) public-execution limit — so the instruction aborted on chain. Reduce OBSERVATIONS_CAPACITY 6396 -> 2048 (~16.8M cycles, ~half the limit); window coverage is unchanged, only sampling resolution. Add programs/benchmark, a standalone crate (excluded from the workspace so CI and the Makefile skip it) that runs the guest ELF through the RISC Zero executor and reports the per-instruction cycle split, reproducing the on-chain pass/fail at the limit. Its cost-vs-capacity sweep still spans to 6396, guarding against bumping capacity back into the over-budget range.