Migrate local dev from Hardhat to Anvil

[YoshihitoAso]

📌 Description

Replace Hardhat-based local test/dev setup with Anvil (Foundry).

✅ Related Issues

None

🔄 Changes

Development Environment Migration:

• Replaced Hardhat with Anvil as the local Ethereum development and testing network. This includes updating documentation (README.md, README_JA.md), Docker configuration (docker-compose.yml), and removing all Hardhat-related files (hardhat.config.js, package.json, tests/Dockerfile_hardhat) in favor of new Anvil equivalents (tests/Dockerfile_anvil).

Exception Handling Improvements:

• Updated exception handling in event log collection to also catch Web3RPCError in addition to previous exceptions.

Configuration and Testing Adjustments:

• Changed the default transaction polling latency to be shorter (0.02s) during unit tests, improving test speed, and added corresponding tests to ensure this behavior (app/config.py, tests/app/config_test.py).
• Updated test expectations and logic to align with Anvil's behavior, such as changes in gas price and error codes, and improved test reliability by ensuring transaction receipts are awaited where necessary.

Code and Test Cleanup:

• Refined test queries to ensure correct token selection and improved assertion accuracy in tests/app/admin_Tokens_POST_test.py.
• Removed unnecessary npm install and npm update steps from the Makefile as Hardhat is no longer used.

📌 Checklist

• I have added tests where necessary.
• I have updated the documentation where necessary.

[github-actions]

Coverage Report •

File	Stmts	Miss	Branch	BrPart	Cover	Missing
app
config.py	103	4	8	4	96%	62–63, 67, 159
app/api/routers
events.py	167	19	76	11	88%	93, 111, 214–215, 220, 222, 224, 226, 278–279, 284, 351–352, 355, 365, 367, 369, 424–425
batch
indexer_Token_Holders.py	344	41	86	17	88%	105, 122, 172, 417–418, 450–451, 469–470, 477–478, 507–508, 539–540, 573–574, 609–610, 647–648, 673–675, 685–695, 697–698, 702–705
tests
conftest.py	184	16	28	13	91%	61–62, 231, 243–247, 250, 282, 292–297
tests/app
admin_Tokens_POST_test.py	243	0	0	0	100%
config_test.py	27	0	0	0	100%
eth_EthereumJsonRpc_test.py	59	0	0	0	100%
eth_GetTransactionCount_test.py	59	0	0	0	100%
eth_SendRawTransactionNowait_test.py	282	0	0	0	100%
eth_SendRawTransaction_test.py	452	0	0	0	100%
events_IbetSecurityTokenDVPEvents_test.py	283	0	12	0	100%
events_IbetSecurityTokenEscrowEvents_test.py	353	0	0	0	100%
events_IbetSecurityTokenInterfaceEvents_test.py	269	5	0	0	98%	136, 153–154, 157, 159
tests/helpers
anvil_transaction_sync.py	48	11	6	4	77%	47, 57, 60, 65–66, 69, 83, 88–91
contract.py	54	8	10	3	85%	120, 122–126, 128, 130
ibet_share_token.py	141	1	18	3	99%	224
TOTAL	38019	1681	3696	759	95%

Tests	Skipped	Failures	Errors	Time
1270	0 💤	0 ❌	0 🔥	11m 58s ⏱️