Enabled Ledger support

[a-ok123]

No description provided.

[roomote-v0]

Rooviewer   See task

No issues found. The latest commit generalizes hardcoded build/ paths to use ${BUILD_DIR}, separates debug output into ${BUILD_DIR}/debug/, and makes BUILD_TAGS overridable. All changes are backward-compatible with the default BUILD_DIR=build value and consistent with Makefile.devnet references.

Previous reviews

• 670ddbb: Review #1

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[Copilot]

Pull request overview

This PR enables Ledger support by building the chain with the ledger build tag and updates protobuf dependency locks accordingly.

Changes:

• Add Makefile support for passing --build.tags "ledger" during ignite chain build.
• Update GitHub Actions workflows (system tests + release) to build with the ledger tag.
• Update buf.lock dependency commits/digests (notably cosmos-sdk and wellknowntypes).

Reviewed changes

Copilot reviewed 3 out of 5 changed files in this pull request and generated 3 comments.

File	Description
buf.lock	Updates locked buf dependencies to newer commits/digests.
Makefile	Introduces build-tag handling and applies it to build/release commands.
.github/workflows/systemtests.yaml	Builds the chain with --build.tags "ledger" in CI system tests.
.github/workflows/release.yml	Builds release artifacts with --build.tags "ledger".

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 5 changed files in this pull request and generated no new comments.

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