chore: refactor to use mod.nr support

[TomAFrench]

This PR refactors noir-projects to use the fact that mod foo can now resolve to a ./foo/mod.nr file rather than just a ./foo.nr file.

[AztecBot]

Docs Preview

Hey there! 👋 You can check your preview at https://6684137b049b6288812012f5--aztec-docs-dev.netlify.app

[AztecBot]

Benchmark results

Metrics with a significant change:

• avm_simulation_time_ms (Token:mint_public): 72.5 (-88%)
• avm_simulation_time_ms (Token:assert_minter_and_mint): 197 (+240%)
• avm_simulation_time_ms (Token:transfer_public): 48.6 (+51%)

Detailed results

All benchmarks are run on txs on the Benchmarking contract on the repository. Each tx consists of a batch call to create_note and increment_balance, which guarantees that each tx has a private call, a nested private call, a public call, and a nested public call, as well as an emitted private note, an unencrypted log, and public storage read and write.

This benchmark source data is available in JSON format on S3 here.

Proof generation

Each column represents the number of threads used in proof generation.

Metric	1 threads	4 threads	16 threads	32 threads	64 threads
proof_construction_time_sha256_ms	5,714 (-1%)	1,545 (-1%)	711 (-1%)	760 (+1%)	776 (-1%)
proof_construction_time_sha256_30_ms	11,792 (-2%)	3,147 (-1%)	1,419 (-1%)	1,455	1,478
proof_construction_time_sha256_100_ms	43,764 (-1%)	11,814	5,609 (+1%)	5,478	5,439
proof_construction_time_poseidon_hash_ms	78.0 (-1%)	35.0 (+3%)	34.0	57.0 (-2%)	87.0 (-1%)
proof_construction_time_poseidon_hash_30_ms	1,516 (-1%)	416 (-1%)	201	230 (+2%)	269 (+1%)
proof_construction_time_poseidon_hash_100_ms	5,724 (-1%)	1,562 (-1%)	728	779 (-3%)	792 (-1%)

L2 block published to L1

Each column represents the number of txs on an L2 block published to L1.

Metric	4 txs	8 txs	16 txs
l1_rollup_calldata_size_in_bytes	1,412	1,412	1,412
l1_rollup_calldata_gas	9,476	9,466	9,476
l1_rollup_execution_gas	611,215	611,356	611,517
l2_block_processing_time_in_ms	769 (+2%)	1,414	2,722 (+1%)
l2_block_building_time_in_ms	24,687 (+1%)	48,979	96,107 (-1%)
l2_block_rollup_simulation_time_in_ms	24,687 (+1%)	48,979	96,106 (-1%)
l2_block_public_tx_process_time_in_ms	21,169 (+1%)	45,329	92,518 (-1%)

L2 chain processing

Each column represents the number of blocks on the L2 chain where each block has 8 txs.

Metric	3 blocks	5 blocks
node_history_sync_time_in_ms	7,060 (+1%)	9,881 (+1%)
node_database_size_in_bytes	12,234,832	16,187,472
pxe_database_size_in_bytes	16,254	26,813

Circuits stats

Stats on running time and I/O sizes collected for every kernel circuit run across all benchmarks.

Circuit	simulation_time_in_ms	witness_generation_time_in_ms	proving_time_in_ms	input_size_in_bytes	output_size_in_bytes	proof_size_in_bytes	num_public_inputs	size_in_gates
private-kernel-init	115 (-1%)	486 (+4%)	12,685 (-2%)	20,634	67,190	92,352	2,819	524,288
private-kernel-inner	358	914 (+1%)	49,847 (+2%)	94,902	67,190	92,352	2,819	2,097,152
private-kernel-tail	1,138 (+1%)	2,558	53,360 (+6%)	74,513	71,733	14,912	399	2,097,152
base-parity	6.26 (+2%)	1,788 (+2%)	2,655	128	64.0	2,208	2.00	131,072
root-parity	49.2 (+1%)	69.2 (-6%)	39,039 (-4%)	27,100	64.0	2,720	18.0	2,097,152
base-rollup	7,676	4,846 (-1%)	90,879 (+1%)	170,330	728	3,648	47.0	4,194,304
root-rollup	110	89.2 (+4%)	24,582 (+7%)	25,253	620	3,456	41.0	1,048,576
public-kernel-setup	633	3,605 (-3%)	44,364 (-2%)	116,905	93,334	125,344	3,850	2,097,152
public-kernel-app-logic	580	4,616	47,683 (+5%)	116,905	93,334	125,344	3,850	2,097,152
public-kernel-tail	1,375 (-1%)	37,733 (+6%)	192,451	511,910	10,014	14,912	399	8,388,608
private-kernel-reset-small	552	1,882 (-1%)	48,550 (+2%)	123,313	67,190	92,352	2,819	2,097,152
public-kernel-teardown	573 (-4%)	4,584 (-3%)	45,837 (-3%)	116,905	93,334	125,344	3,850	2,097,152
merge-rollup	29.1 (-1%)	N/A	N/A	16,486	728	N/A	N/A	N/A
private-kernel-tail-to-public	N/A	8,544	53,452 (+3%)	N/A	N/A	125,344	3,850	2,097,152

Stats on running time collected for app circuits

Function	input_size_in_bytes	output_size_in_bytes	witness_generation_time_in_ms	proof_size_in_bytes	proving_time_in_ms	size_in_gates	num_public_inputs
ContractClassRegisterer:register	1,344	9,944	404 (-1%)	N/A	N/A	N/A	N/A
ContractInstanceDeployer:deploy	1,408	9,944	39.3 (-1%)	N/A	N/A	N/A	N/A
MultiCallEntrypoint:entrypoint	1,920	9,944	1,288 (-1%)	N/A	N/A	N/A	N/A
GasToken:deploy	1,376	9,944	947 (-2%)	N/A	N/A	N/A	N/A
SchnorrAccount:constructor	1,312	9,944	488	N/A	N/A	N/A	N/A
SchnorrAccount:entrypoint	2,304	9,944	1,869 (-1%)	16,768	57,478 (+6%)	2,097,152	457
Token:privately_mint_private_note	1,280	9,944	632 (-1%)	N/A	N/A	N/A	N/A
FPC:fee_entrypoint_public	1,344	9,944	299 (-1%)	16,768	11,966 (+1%)	524,288	457
Token:transfer	1,312	9,944	2,886 (-6%)	16,768	23,440	1,048,576	457
AuthRegistry:set_authorized (avm)	20,954	N/A	N/A	94,336	1,253 (-6%)	N/A	N/A
FPC:prepare_fee (avm)	28,396	N/A	N/A	94,400	2,829 (-6%)	N/A	N/A
Token:transfer_public (avm)	44,612	N/A	N/A	94,400	3,808 (-3%)	N/A	N/A
AuthRegistry:consume (avm)	34,832	N/A	N/A	94,336	2,881 (-6%)	N/A	N/A
FPC:pay_refund (avm)	38,561	N/A	N/A	94,368	23,697 (+2%)	N/A	N/A
Benchmarking:create_note	1,344	9,944	483 (+1%)	N/A	N/A	N/A	N/A
SchnorrAccount:verify_private_authwit	1,280	9,944	72.4	N/A	N/A	N/A	N/A
Token:unshield	1,376	9,944	2,703	N/A	N/A	N/A	N/A
FPC:fee_entrypoint_private	1,376	9,944	3,497	N/A	N/A	N/A	N/A

AVM Simulation

Time to simulate various public functions in the AVM.

Function	time_ms	bytecode_size_in_bytes
GasToken:_increase_public_balance	70.7 (+5%)	13,790
GasToken:set_portal	17.6 (+9%)	3,305
Token:constructor	93.9 (-4%)	23,658
FPC:constructor	61.7 (-2%)	13,592
GasToken:mint_public	53.4 (+3%)	10,158
Token:mint_public	⚠️ 72.5 (-88%)	19,000
Token:assert_minter_and_mint	⚠️ 197 (+240%)	12,891
AuthRegistry:set_authorized	35.2 (+13%)	7,812
FPC:prepare_fee	139 (+4%)	15,062
Token:transfer_public	⚠️ 48.6 (+51%)	31,184
FPC:pay_refund	147 (-1%)	25,260
Benchmarking:increment_balance	2,604	15,233
Token:_increase_public_balance	57.5 (-1%)	14,972
FPC:pay_refund_with_shielded_rebate	131 (-2%)	26,347

Public DB Access

Time to access various public DBs.

Function	time_ms
get-nullifier-index	0.152 (+1%)

Tree insertion stats

The duration to insert a fixed batch of leaves into each tree type.

Metric	1 leaves	16 leaves	64 leaves	128 leaves	256 leaves	512 leaves	1024 leaves
batch_insert_into_append_only_tree_16_depth_ms	10.3 (-1%)	16.6 (-1%)	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_16_depth_hash_count	16.8	31.7	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_16_depth_hash_ms	0.597 (-1%)	0.511 (-1%)	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_32_depth_ms	N/A	N/A	48.2	75.9	131 (-1%)	245	470
batch_insert_into_append_only_tree_32_depth_hash_count	N/A	N/A	95.9	159	287	543	1,055
batch_insert_into_append_only_tree_32_depth_hash_ms	N/A	N/A	0.493	0.467	0.451	0.444	0.439
batch_insert_into_indexed_tree_20_depth_ms	N/A	N/A	59.4	112	182	353	693
batch_insert_into_indexed_tree_20_depth_hash_count	N/A	N/A	109	207	355	691	1,363
batch_insert_into_indexed_tree_20_depth_hash_ms	N/A	N/A	0.502	0.503	0.480	0.479	0.477
batch_insert_into_indexed_tree_40_depth_ms	N/A	N/A	72.7	N/A	N/A	N/A	N/A
batch_insert_into_indexed_tree_40_depth_hash_count	N/A	N/A	133	N/A	N/A	N/A	N/A
batch_insert_into_indexed_tree_40_depth_hash_ms	N/A	N/A	0.518	N/A	N/A	N/A	N/A

Miscellaneous

Transaction sizes based on how many contract classes are registered in the tx.

Metric	0 registered classes	1 registered classes
tx_size_in_bytes	85,707	670,983

Transaction size based on fee payment method

| Metric | |
| - | |