chore: bump tentative v12

[julienrbrt]

No description provided.

[Copilot]

Pull request overview

This PR updates the fork to a newer ev-node stack and restructures how the node integrates with DA, the EVM engine, and sequencing, while also simplifying some legacy namespace-migration logic.

Changes:

• Bumps a large number of dependencies (notably ev-node, go-ethereum, libp2p, OTEL, etc.) and updates go.mod/go.sum accordingly.
• Reworks cmd/run.go to use the new DA client and sequencer abstractions (including a “based” sequencer mode) and to configure the EVM engine client via a JWT secret file or backward‑compatible config.
• Extends rollback behavior to also rollback the execution layer, refactors signer passphrase handling, introduces backward‑compatibility constants, and removes the now-unused namespace-migration layer and its tests.

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
go.mod	Updates the Go toolchain version and switches core dependencies (e.g., celestiaorg/go-header to v0.8.0, evstack/ev-node and its submodules to newer pseudo-versions, go-ethereum to v1.16.8). Also removes many unused indirect requirements and adds/bumps others to match the new ev-node stack.
go.sum	Regenerates checksums to align with the updated dependency graph from go.mod.
cmd/run.go	Refactors node startup: creates a dedicated evmDbName datastore, wires it into the new evm.EngineClient (with tracing), instantiates a new DA client (block.NewDAClient), selects between a “based” sequencer and the new single sequencer via createSequencer, adds an optional force-inclusion HTTP server, and updates JWT handling to prefer a secret file with a backward-compatible config flag.
cmd/rollback.go	Uses the shared evmDbName datastore and store.NewEvNodeKVStore, adds execution-layer rollback by constructing an evm.EngineClient and calling Rollback, updates user messages, and adds EVM connection/JWT flags for rollback.
cmd/init.go	Reuses the new backward-compatibility constant flagBackwardPassphrase, adds support for reading the signer passphrase from a file, and marks the passphrase string and file flags mutually exclusive.
cmd/backward.go	Introduces central constants for backward‑compatible flag names (evnode.signer.passphrase and evnode.evm.jwt-secret) so they can be used consistently across commands.
cmd/run_test.go	Removes tests that specifically exercised the old namespace-migration wrapper around the DA JSON-RPC client; this matches the removal of that wrapper in run.go.
README.md	Drops the bullet-point documenting explicit “namespace migration support”, which is no longer implemented in this fork.

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[julienrbrt]

This is a notable change that all node operators must perform on their genesis
cc @auricom @tac0turtle

Took arbitrary 100, default value in ev-node is 50. The feature is disabled, so it currently does nothing. Feature will be enabled for v13 / final v1.