Debug Trace Speedup

[Kbhat1]

Describe your changes and provide context

• Remove unnecessary store tracing on ordinary debug traces
• Add a tracing-only DBImpl read cache for repeated code, nonce, balance, and storage lookups
• Parallelize native/default block trace execution across per-tx prestate snapshots while preserving ordered state advancement (largest improvement)

Testing performed to validate your change

• Tested on node

[github-actions]

The latest Buf updates on your PR. Results from workflow Buf / buf (pull_request).

Build	Format	Lint	Breaking	Updated (UTC)
✅ passed	✅ passed	✅ passed	✅ passed	Mar 13, 2026, 2:55 PM

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 58.26%. Comparing base (837ba92) to head (3c6272f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3058      +/-   ##
==========================================
- Coverage   58.35%   58.26%   -0.09%     
==========================================
  Files        2080     2072       -8     
  Lines      171659   171263     -396     
==========================================
- Hits       100170    99788     -382     
+ Misses      62564    62551      -13     
+ Partials     8925     8924       -1     

Flag	Coverage Δ
sei-db	70.41% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
app/app.go	70.55% <ø> (+0.36%)	⬆️
evmrpc/tracers.go	64.39% <ø> (-1.18%)	⬇️
sei-cosmos/types/context.go	93.67% <ø> (ø)
x/evm/state/balance.go	68.67% <ø> (+6.71%)	⬆️
x/evm/state/code.go	84.61% <ø> (+2.26%)	⬆️
x/evm/state/nonce.go	71.42% <ø> (-3.58%)	⬇️
x/evm/state/state.go	96.77% <ø> (-0.06%)	⬇️
x/evm/state/statedb.go	79.05% <ø> (ø)

... and 56 files with indirect coverage changes

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