Add opts for scdual write

[yzang2019]

Describe your changes and provide context

Add flags/opts to allow setting dual write and dual read for SC, remove migration flag as well

Testing performed to validate your change

Tested on RPC 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 2, 2026, 10:11 PM

[blindchaser]

considering learning from ss config parsing string: only overwrite if non-empty, validate, and panic on invalid values

if wm := cast.ToString(appOpts.Get(FlagEVMSSWriteMode)); wm != "" {
		parsedWM, err := config.ParseWriteMode(wm)
		if err != nil {
			panic(fmt.Sprintf("invalid EVM SS write mode %q: %s", wm, err))
		}
		ssConfig.WriteMode = parsedWM
	}
	if rm := cast.ToString(appOpts.Get(FlagEVMSSReadMode)); rm != "" {
		parsedRM, err := config.ParseReadMode(rm)
		if err != nil {
			panic(fmt.Sprintf("invalid EVM SS read mode %q: %s", rm, err))
		}
		ssConfig.ReadMode = parsedRM
	}

[yzang2019]

Good point

[blindchaser]

in cmd/seid/cmd/root.go -> addModuleInitFlags(), --migrate-iavl and --migrate-height CLI flags orphaned

[yzang2019]

Good call, removing

[blindchaser]

docker config files (docker/localnode/config/app.toml, docker/rpcnode/config/app.toml) still reference sc-zero-copy and sc-cache-size. these are likely pre-existing and out of scope for this PR, but worth noting for cleanup

[codecov]

Codecov Report

❌ Patch coverage is 13.33333% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.30%. Comparing base (555d520) to head (2749706).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
app/seidb.go	15.38%	9 Missing and 2 partials ⚠️
sei-cosmos/storev2/rootmulti/store.go	0.00%	0 Missing and 1 partial ⚠️
tools/migration/sc/migrator.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3002      +/-   ##
==========================================
- Coverage   58.30%   58.30%   -0.01%     
==========================================
  Files        2108     2108              
  Lines      173672   173675       +3     
==========================================
- Hits       101262   101261       -1     
- Misses      63390    63393       +3     
- Partials     9020     9021       +1     

Flag	Coverage Δ
sei-chain-pr	37.33% <13.33%> (?)
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
cmd/seid/cmd/root.go	0.00% <ø> (ø)
sei-cosmos/storev2/rootmulti/store.go	46.47% <0.00%> (ø)
tools/migration/sc/migrator.go	0.00% <0.00%> (ø)
app/seidb.go	63.41% <15.38%> (-5.42%)	⬇️

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