Backport release/v6.7: seidb: add changelog mode and --inspect-plan to speed up EVM digest

[seidroid]

Backport of #4419 to release/v6.7.

[seidroid]

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin backport-4419-to-release/v6.7
git worktree add --checkout .worktree/backport-4419-to-release/v6.7 backport-4419-to-release/v6.7
cd .worktree/backport-4419-to-release/v6.7
git reset --hard HEAD^
git cherry-pick -x 53168c2d1ebc10ba3dd0b237b8be24f25b4657aa
git push --force-with-lease

[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	Oct 3, 2026, 2:16 AM

[codecov]

Codecov Report

❌ Patch coverage is 81.86441% with 107 lines in your changes missing coverage. Please review.
✅ Project coverage is 60.89%. Comparing base (b9b9f14) to head (ce192ba).

Files with missing lines	Patch %	Lines
.../seidb/operations/evmlogical/evm_logical_digest.go	84.47%	25 Missing and 18 partials ⚠️
sei-db/state_db/sc/memiavl/changelog_range.go	73.19%	13 Missing and 13 partials ⚠️
.../operations/evmlogical/evm_logical_inspect_plan.go	82.39%	15 Missing and 10 partials ⚠️
...rations/evmlogical/evm_logical_digest_changelog.go	84.00%	5 Missing and 3 partials ⚠️
sei-db/tools/cmd/seidb/main.go	0.00%	2 Missing ⚠️
sei-db/tools/cmd/seidb/operations/dump_flatkv.go	83.33%	1 Missing ⚠️
...cmd/seidb/operations/evmlogical/kvrepair_export.go	80.00%	1 Missing ⚠️
...db/tools/cmd/seidb/operations/flatkv_state_size.go	88.88%	1 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##           release/v6.7    #4439      +/-   ##
================================================
- Coverage         61.49%   60.89%   -0.61%     
================================================
  Files              2168     2093      -75     
  Lines            189616   182624    -6992     
================================================
- Hits             116607   111208    -5399     
+ Misses            62232    61183    -1049     
+ Partials          10777    10233     -544     

Flag	Coverage Δ
sei-chain-pr	53.04% <83.56%> (?)
sei-db	69.80% <ø> (ø)
sei-db-state-db	?
sei-db-state-db-pr	77.29% <73.19%> (?)

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

Files with missing lines	Coverage Δ
sei-db/tools/cmd/seidb/operations/flatkv_open.go	64.51% <100.00%> (+0.38%)	⬆️
sei-db/tools/cmd/seidb/operations/dump_flatkv.go	50.98% <83.33%> (-0.24%)	⬇️
...cmd/seidb/operations/evmlogical/kvrepair_export.go	81.01% <80.00%> (ø)
...db/tools/cmd/seidb/operations/flatkv_state_size.go	63.86% <88.88%> (ø)
sei-db/tools/cmd/seidb/main.go	0.00% <0.00%> (ø)
...rations/evmlogical/evm_logical_digest_changelog.go	84.00% <84.00%> (ø)
.../operations/evmlogical/evm_logical_inspect_plan.go	82.39% <82.39%> (ø)
sei-db/state_db/sc/memiavl/changelog_range.go	73.19% <73.19%> (ø)
.../seidb/operations/evmlogical/evm_logical_digest.go	73.43% <84.47%> (ø)

... and 83 files with indirect coverage changes

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[cursor]

PR Summary

Medium Risk
New memiavl changelog replay semantics and operational tooling paths affect how EVM state is read for comparisons and repairs; mistakes could mis-report digests or repair diffs, though behavior is heavily test-gated.

Overview
Adds ReplayTreeChangelog in memiavl so tools can stream a single tree’s WAL changesets from the same snapshot OpenDB would use, without loading trees or repairing the changelog. It validates version spans, rejects tree upgrades in range, and surfaces ErrSnapshotPruned when the base snapshot disappears mid-read.

seidb evm-logical-digest gains --memiavl-open-mode changelog: sequential snapshot kvs scan merged with EVM changelog writes above it (same logical rows as replay, without walking other modules or the mmap tree). Changelog mode uses the new replay API plus overlay merge; snapshot reads keep kvs open so pruning during a scan can be retried once. EVM logical commands move into the evmlogical package; FlatKV bucket classification is exported from operations for shared use.

Inspect workflows add --inspect-plan: one scan writes many JSON inspect reports from a JSON item list (replacing repeated single-flag runs). kvrepair-export docs now recommend changelog mode for reserve inspects. Golden tests pin digest/inspect JSON across backends and modes; changelog vs replay parity is asserted in tests.

^{Reviewed by Cursor Bugbot for commit ce192ba. Bugbot is set up for automated code reviews on this repo. Configure here.}

[seidroid]

Faithful backport of #4419 (offline seidb tooling: memiavl changelog-range replay, changelog open mode, --inspect-plan, evmlogical package split). It differs from upstream in only two places, both correct for release/v6.7: the EVMKeyBalance prefix filter and its test row are dropped because the release branch has no separate balance key, and inspect output is sorted by key so the translator path is deterministic. The dependencies it relies on (wal.Config.NoRepairOnOpen, computeWALIndexDelta, seekSnapshot, utils.NextVersion) exist on the base branch, and I found no issues.

Findings: 0 blocking | 0 non-blocking | 0 posted inline

Blockers

• None at the file/PR level.

Non-blocking

• None at the file/PR level.