fix warnings issued by latest version of clippy

[arvidn]

Note

Low Risk
Style and test assertion refactors only; no production logic changes beyond trivial formatting and a redundant return removal in JSON parsing.

Overview
Addresses new Clippy lints repo-wide with mechanical edits only—no intended behavior changes.

Assertions: Tests and fuzz targets swap assert!(x == y) / assert!(x != y) for assert_eq! / assert_ne!, including flag bitmask checks like assert_eq!(spend.flags & ELIGIBLE_FOR_DEDUP, 0). Merkle code uses debug_assert_eq! for duplicate-leaf invariants.

Formatting: Debug impls for BLS GTElement, PublicKey, and Signature use single-line format_args! and drop redundant & on hex::encode. Fuzz/tools use inline {var:?} in println! / write! where Clippy prefers it.

Small cleanups: Program::from_json_dict drops a needless return before Err(...). Streamable fuzz compares parse errors with assert_eq! instead of assert!(expr == Err(...)).

^{Reviewed by Cursor Bugbot for commit cfd72dd. Bugbot is set up for automated code reviews on this repo. Configure here.}

[coveralls-official]

Coverage Report for CI Build 28433491283

Coverage increased (+0.007%) to 81.503%

Details

• Coverage increased (+0.007%) from the base build.
• Patch coverage: 1 uncovered change across 1 file (31 of 32 lines covered, 96.88%).
• No coverage regressions found.

Uncovered Changes

File	Changed	Covered	%
crates/chia-bls/src/gtelement.rs	1	0	0.0%
Total (8 files)	32	31	96.88%

Coverage Regressions

No coverage regressions found.

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Coverage Stats

Relevant Lines:	18895
Covered Lines:	15400
Line Coverage:	81.5%
Coverage Strength:	11951446.8 hits per line

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💛 - Coveralls