Bump chia rs 0.44.0

[arvidn]

Purpose:

Bump chia_rs to the latest version. There are 3 major changes:

1. errors are now accompanied by message strings, that have more details that just the code.
2. chia-pos2 has been updated and the plot proofs have changed, to the test-cache is updated
3. chia-pos2 now supports a "testnet" flag for v2 plots. v1 plots would distinguish testnet plots from mainnet by using different k-sizes. testnet would support much smaller plots. With v2, k is the same for testnet and mainnet. In order to be able to make testnet plots that are not compatible with mainnet, we now distinguish based on a new Consensus Constant, TESTNET.

---

Note

Medium Risk
Touches consensus pre-validation, proof-of-space validation, and plot tooling with a dependency bump; incorrect TESTNET wiring could affect v2 plot validity across networks.

Overview
Bumps chia-rs to 0.44.0 and refreshes CI test-cache artifacts to 0.45.20 so v2 plot proofs match the updated chia-pos2 behavior.

Error messages: Block generator and pre-validation paths now consume the extra string return from run_block_generator / run_block_generator2. PreValidationResult gains error_msg, and full-node / mempool / RPC logging plus ConsensusError surface those details alongside Err codes.

Testnet v2 plots: Adds consensus constant TESTNET (default False; non-mainnet networks get TESTNET=True via overrides). V2 plot create/solve/validate paths pass testnet from constants or config so testnet plots are not valid on mainnet when k is shared.

Tests and simulator tooling are updated for the new APIs and exception shapes from chia-rs/clvm.

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[arvidn]

@cursor review

[cursor]

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[coveralls-official]

Coverage Report for CI Build 26505135121

Coverage decreased (-0.006%) to 91.494%

Details

• Coverage decreased (-0.006%) from the base build.
• Patch coverage: 9 uncovered changes across 6 files (40 of 49 lines covered, 81.63%).
• 31 coverage regressions across 9 files.

Uncovered Changes

File	Changed	Covered	%
chia/plotting/check_plots.py	3	0	0.0%
chia/full_node/full_node_rpc_api.py	2	0	0.0%
chia/_tests/util/plot_cache.py	2	1	50.0%
chia/consensus/blockchain.py	3	2	66.67%
chia/consensus/multiprocess_validation.py	5	4	80.0%
chia/full_node/full_node.py	4	3	75.0%
Total (23 files)	49	40	81.63%

Coverage Regressions

31 previously-covered lines in 9 files lost coverage.

File	Lines Losing Coverage	Coverage
chia/_tests/util/plot_cache.py	7	89.23%
chia/server/server.py	6	84.94%
chia/full_node/full_node.py	4	88.28%
chia/wallet/wallet_node.py	4	87.03%
chia/server/node_discovery.py	3	80.52%
chia/_tests/core/util/test_lockfile.py	3	88.94%
chia/full_node/full_node_api.py	2	88.47%
chia/plotting/prover.py	1	94.79%
chia/_tests/simulation/test_simulation.py	1	96.5%

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Coverage Stats

Relevant Lines:	122002
Covered Lines:	111799
Line Coverage:	91.64%
Relevant Branches:	12033
Covered Branches:	10835
Branch Coverage:	90.04%
Branches in Coverage %:	Yes
Coverage Strength:	3.67 hits per line

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💛 - Coveralls

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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^{Reviewed by Cursor Bugbot for commit d3ff8e0. Configure here.}

[wjblanke]

aok

[github-actions]

File	Coverage	Missing Lines
chia/_tests/util/plot_cache.py	50.0%	lines 108
chia/consensus/blockchain.py	66.7%	lines 791
chia/consensus/multiprocess_validation.py	80.0%	lines 167
chia/full_node/full_node.py	75.0%	lines 2562
chia/full_node/full_node_rpc_api.py	0.0%	lines 1004, 1017
chia/plotting/check_plots.py	0.0%	lines 50-52

Total	Missing	Coverage
49 lines	9 lines	81%

[wjblanke]

aok