Drop stale IBC wording from comments, docs and test fixtures

[masih]

After #4337 and #4340 removed the IBC modules, stores and upgrade state, a few places in the tree still describe behaviour in terms of IBC that no longer exists on Sei: the tokenfactory validateCreateDenom check calls itself a temporary workaround for an IBC bug, the sc-keep-recent comment in the docker app.toml files and the v2 config migration guide justifies the default with IBC relayers, the vendored sei-cosmos/x/README.md points at ibc-go, the x/upgrade client spec lists ibc, transfer and vesting module versions, and two store-hash tests mount a store named ibc.

This PR only rewords and relabels. The tokenfactory check is kept as-is because refusing a subdenom that collides with a denom that already has supply is still correct; only the comment and error string change, and nothing asserts on the old text. The two hash tests mount evm instead of ibc; they derive their expectations from the stores they create rather than from golden hashes, so the rename does not alter what they verify. No runtime, state or consensus behaviour changes.

[devin-ai-integration]

I'll fix CI failures and address comments from users with write access. I'll skip comments containing "(aside)".

• Disable automatic comment, CI, and merge conflict monitoring

[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 1, 2026, 9:22 PM

[cursor]

PR Summary

Low Risk
Comment, documentation, and test fixture renames only; tokenfactory validation and runtime config values are unchanged.

Overview
Removes leftover IBC references from comments, docs, and test fixtures after IBC was dropped from the chain—no logic or config value changes.

Tokenfactory validateCreateDenom still rejects subdenoms that match a native denom with supply; only the comment and error text drop the “temporary IBC bug” wording.

sc-keep-recent comments in docker app.toml and the Sei v2 config migration doc now explain the default as enabling proofs against the previous commit instead of IBC relayers.

Docs: vendored sei-cosmos/x/README.md no longer links to ibc-go; upgrade client spec examples drop ibc, transfer, and vesting from module-version samples and use staking in the CLI example.

Tests: hash consistency and memiavl WAL replay tests mount an evm store key instead of ibc; expectations are derived from mounted stores, so verification intent is unchanged.

^{Reviewed by Cursor Bugbot for commit 58e95e1. Bugbot is set up for automated code reviews on this repo. Configure here.}

[seidroid]

This PR removes leftover IBC wording from comments, docs and test fixtures. It changes no runtime, state or consensus behaviour: the tokenfactory supply check stays the same, nothing asserts on the old error text, and the hash tests compute their expectations from the stores they mount. The only defect is in a docs example, so it does not block. I kept the one finding from the codex reading because it holds.

Non-blocking

1 finding on the changed lines, as inline comments.

_{seidroid review · decision approve · session e4d418404ee5428082077b805351de33 · turn resp_claude_de02e794bb431fead96f9e99310e26b4 · item e32c65e2b98259599d3abf9969bf3375}

Findings: 0 blocking | 1 non-blocking | 1 posted inline

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 55.69%. Comparing base (1c2b3a2) to head (58e95e1).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
x/tokenfactory/keeper/createdenom.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4420   +/-   ##
=======================================
  Coverage   55.69%   55.69%           
=======================================
  Files        2177     2177           
  Lines      169045   169047    +2     
=======================================
+ Hits        94150    94155    +5     
+ Misses      74890    74887    -3     
  Partials        5        5           

Flag	Coverage Δ
sei-chain	53.85% <0.00%> (+<0.01%)	⬆️
sei-db	74.81% <ø> (-0.25%)	⬇️
sei-db-state-db	78.59% <ø> (-0.02%)	⬇️

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

Files with missing lines	Coverage Δ
x/tokenfactory/keeper/createdenom.go	94.33% <0.00%> (+1.74%)	⬆️

... and 28 files with indirect coverage changes

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