Backport release/v6.3: Add Rate limit and concurrency control for RPC with proof queries

[seidroid]

Backport of #2951 to release/v6.3.

[seidroid]

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

git fetch origin backport-2951-to-release/v6.3
git worktree add --checkout .worktree/backport-2951-to-release/v6.3 backport-2951-to-release/v6.3
cd .worktree/backport-2951-to-release/v6.3
git reset --hard HEAD^
git cherry-pick -x f4b318c1a986200e0fef42af3ace4787c140b758
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	Feb 22, 2026, 4:23 AM

[codecov]

Codecov Report

❌ Patch coverage is 77.77778% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.48%. Comparing base (ac53eb9) to head (637cba6).
⚠️ Report is 1 commits behind head on release/v6.3.

Files with missing lines	Patch %	Lines
sei-db/config/config.go	0.00%	10 Missing ⚠️
sei-cosmos/storev2/rootmulti/store.go	89.28%	2 Missing and 4 partials ⚠️

❌ Your project status has failed because the head coverage (38.49%) is below the target coverage (40.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@               Coverage Diff                @@
##           release/v6.3    #2953      +/-   ##
================================================
+ Coverage         42.30%   43.48%   +1.18%     
================================================
  Files              1520     1866     +346     
  Lines            121058   155469   +34411     
================================================
+ Hits              51208    67612   +16404     
- Misses            65367    81814   +16447     
- Partials           4483     6043    +1560     

Flag	Coverage Δ
sei-chain	42.54% <100.00%> (+0.01%)	⬆️
sei-cosmos	38.25% <89.28%> (+0.03%)	⬆️
sei-db	45.69% <0.00%> (+0.05%)	⬆️
sei-ibc-go	55.96% <ø> (ø)
sei-tendermint	47.59% <ø> (?)
sei-wasmd	41.56% <ø> (ø)
sei-wasmvm	39.88% <ø> (ø)

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

Files with missing lines	Coverage Δ
app/seidb.go	84.74% <100.00%> (+1.72%)	⬆️
sei-cosmos/storev2/rootmulti/store.go	42.64% <89.28%> (+3.45%)	⬆️
sei-db/config/config.go	0.00% <0.00%> (ø)

... and 350 files with indirect coverage changes

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[Copilot]

Pull request overview

This PR backports rate limiting and concurrency control for historical proof queries from the main branch to the release/v6.3 branch. The changes introduce three new configuration parameters to limit the rate and concurrency of expensive LoadVersion calls that can cause RPC nodes to fall behind under heavy query load.

Changes:

• Added configuration options for historical proof query rate limiting and concurrency control
• Implemented rate limiting using token bucket algorithm and concurrency control using semaphore pattern
• Added comprehensive test coverage for the new functionality

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
sei-db/config/config.go	Added three new configuration fields and constants for historical proof rate limiting and concurrency control
sei-db/config/toml.go	Added configuration template entries for the new historical proof settings
sei-cosmos/storev2/rootmulti/store.go	Implemented rate limiter and semaphore-based concurrency control for historical proof queries
sei-cosmos/storev2/rootmulti/store_test.go	Added comprehensive tests for rate limiting, concurrency control, and edge cases
app/seidb.go	Added flag definitions and configuration parsing for the new settings
app/seidb_test.go	Added test to verify configuration parsing of historical proof flags

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