chore: depend on sentrix-proto crate, drop vendored proto

[satyakwok]

🚧 Draft — blocked on `cargo publish -p sentrix-proto` from sentrix-labs/sentrix. CI will fail with `no matching package named 'sentrix-proto' found` until publish lands. Mark ready-for-review once sentrix-proto v0.1.0 is on crates.io.

Why

The proto schema lives in four places (chain server, sdk-rs, this crate, sentrix-explorer-v2). Drift had already started — the chain server's proto was 8979 bytes while this crate's was 8897 bytes as of 2026-05-13.

Cosmos solved this with `ibc-proto` on crates.io. The sentrix-labs/sentrix repo now ships a sibling `sentrix-proto` crate (PR sentrix-labs/sentrix#667 merged) as the single source of truth.

What

• Drop `proto/sentrix.proto` (vendored copy)
• Drop `build.rs` (tonic-build invocation)
• Drop `tonic-prost` + `prost` + `tonic-prost-build` from explicit deps (now transitive via `sentrix-proto`)
• Add `sentrix-proto = "0.1"`
• `src/lib.rs` keeps `pub mod pb { pub use sentrix_proto::*; }` for backwards compat

Net: -279 / +9 lines.

Test plan

• Local: `cargo build` clean (with path-dep)
• Local: `cargo test --doc` clean
• Local: `cargo clippy --all-targets -- -D warnings` clean
• CI: blocks on sentrix-proto publish

After publish

1. CI re-runs and goes green
2. Bump `sentrix-grpc-wasm` 0.1.0-alpha.0 → 0.2.0-alpha.0 (follow-up commit on this branch)
3. Merge
4. Re-publish `sentrix-grpc-wasm` 0.2.0-alpha.0 to crates.io

Summary by CodeRabbit

• Chores
  • Switched to a published protocol-definitions crate for protobuf/gRPC types.
  • Removed compile-time code generation and the associated build orchestration.
  • Replaced in-repo proto sources with re-exported, pre-generated protocol types to simplify maintenance and streamline builds.

[coderabbitai]

📝 Walkthrough

Walkthrough

The PR removes local protobuf generation: deletes proto/sentrix.proto and the build.rs script, replaces in-repo prost/tonic type generation with a dependency on the published sentrix-proto crate (added to Cargo.toml with default-features = false), removes direct prost/tonic-prost and build-dependencies, and updates src/lib.rs to re-export sentrix_proto::* instead of using tonic::include_proto!.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• Sentriscloud/sentrix-grpc-wasm#12: Changes protobuf/gRPC generation pipeline; adds local tonic_prost_build usage in build.rs whereas this PR removes local generation in favor of the sentrix-proto crate.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title concisely summarizes the main change: switching from vendored proto files to a published sentrix-proto crate dependency.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/depend-on-sentrix-proto-crate

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@Cargo.toml`:
- Line 24: The dependency entry for sentrix-proto in Cargo.toml currently uses
version = "0.1" which permits 0.1.0; update the sentrix-proto dependency to
require version = "0.1.1" (keeping default-features = false) so the Cargo
manifest enforces the safe minimum release that includes the wasm-compatible
transport change.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: b0f38b6b-f26a-42e5-ab47-6cac95f2bb5c

📥 Commits

Reviewing files that changed from the base of the PR and between eadbc94 and 91ec4a5.

⛔ Files ignored due to path filters (1)

• Cargo.lock is excluded by !**/*.lock, !**/*.lock

📒 Files selected for processing (1)

• Cargo.toml