removed support for secp256k1 and sr25519 as validator keys

[pompon0]

Only ed25519 will be supported (it is the only enabled validator key scheme on atlantic-2,arctic-1 and pacific-1). This will simplify migration to autobahn.

From now on crypto.PubKey is an alias of ed25519.PubKey. The pr is almost entirely generated with codex.

[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	Dec 9, 2025, 4:13 PM

[codecov]

Codecov Report

❌ Patch coverage is 31.39535% with 59 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.26%. Comparing base (6996379) to head (ab25bc3).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
sei-tendermint/crypto/ed25519/ed25519.go	30.76%	9 Missing ⚠️
loadtest/sign.go	0.00%	5 Missing ⚠️
sei-tendermint/crypto/encoding/codec.go	0.00%	5 Missing ⚠️
sei-cosmos/crypto/keys/sr25519/internal/privkey.go	20.00%	4 Missing ⚠️
sei-tendermint/test/e2e/pkg/testnet.go	0.00%	4 Missing ⚠️
sei-cosmos/crypto/keyring/keyring.go	50.00%	2 Missing and 1 partial ⚠️
sei-cosmos/crypto/keys/sr25519/privkey.go	40.00%	3 Missing ⚠️
sei-tendermint/cmd/tendermint/commands/reset.go	0.00%	3 Missing ⚠️
sei-tendermint/privval/secret_connection.go	70.00%	2 Missing and 1 partial ⚠️
sei-cosmos/crypto/keys/sr25519/internal/pubkey.go	0.00%	2 Missing ⚠️
... and 13 more

❌ Your patch status has failed because the patch coverage (31.39%) is below the target coverage (70.00%). You can increase the patch coverage or adjust the target coverage.
❌ Your project status has failed because the head coverage (38.28%) 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             @@
##             main    #2585      +/-   ##
==========================================
+ Coverage   42.00%   43.26%   +1.25%     
==========================================
  Files        1510     1850     +340     
  Lines      118783   152293   +33510     
==========================================
+ Hits        49897    65892   +15995     
- Misses      64558    80538   +15980     
- Partials     4328     5863    +1535     

Flag	Coverage Δ
sei-chain	42.10% <11.11%> (+0.02%)	⬆️
sei-cosmos	38.04% <28.57%> (+0.08%)	⬆️
sei-db	69.06% <ø> (-0.22%)	⬇️
sei-ibc-go	55.96% <0.00%> (ø)
sei-tendermint	47.54% <36.36%> (?)
sei-wasmd	42.10% <0.00%> (-0.02%)	⬇️
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/app.go	76.54% <ø> (+0.02%)	⬆️
app/test_helpers.go	31.42% <100.00%> (ø)
sei-cosmos/crypto/hd/hdpath.go	98.61% <ø> (-0.04%)	⬇️
sei-tendermint/test/e2e/app/app.go	0.00% <ø> (ø)
sei-tendermint/test/e2e/generator/generate.go	82.31% <ø> (ø)
sei-tendermint/test/e2e/pkg/manifest.go	0.00% <ø> (ø)
x/oracle/keeper/testutils/test_utils.go	0.00% <ø> (ø)
x/oracle/types/test_utils.go	45.71% <ø> (ø)
sei-cosmos/crypto/codec/tm.go	0.00% <0.00%> (ø)
sei-cosmos/crypto/hd/algo.go	0.00% <0.00%> (ø)
... and 21 more

... and 329 files with indirect coverage changes

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