Fix archival protocol compatibility and fallback

[Ri-go]

Fix archival clients that currently fail on TM WebSocket, gRPC-Web or missing state within overlapping shards.

Add TM subscriptions and a mixed gRPC-Web/native gRPC/REST listener with CORS. Retry known missing-state errors on another eligible backend for historical reads, preserving height, payload and metadata. Writes, unknown gRPC methods and partial responses are not replayed.

Validation: full Go tests, race suite, vet, lint, generator tests and CI pass. All 15 isolated Asia checks passed, including live subscriptions, binary/text gRPC-Web and forced state fallback at heights 105504992 and 112637000. Published as v0.1.5 and deployed by digest to both private Asia replicas, with all 42 post-deploy protocol checks passing. Public DNS is unchanged.

EVM uses the existing Asia EVM Gateway without archival access controls. Exchange stays on nginx.

Refs ID-1610.

[coderabbitai]

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Configuration used: defaults

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Run ID: 214e58a2-5994-4dbb-8a7e-9b236996668f

📥 Commits

Reviewing files that changed from the base of the PR and between 772ef56 and a8ea993.

⛔ Files ignored due to path filters (1)

• go.sum is excluded by !**/*.sum

📒 Files selected for processing (34)

• .github/workflows/ci.yml
• .gitignore
• Dockerfile
• docs/archival-compatibility.md
• go.mod
• internal/cmd/start.go
• internal/config/grpc_web_test.go
• internal/config/types.go
• internal/config/validate.go
• internal/forwarder/history.go
• internal/forwarder/history_test.go
• internal/forwarder/http.go
• internal/history/errors.go
• internal/history/errors_test.go
• internal/server/cmt_rpc/cache_test.go
• internal/server/cmt_rpc/decode.go
• internal/server/cmt_rpc/decode_test.go
• internal/server/cmt_rpc/manifest.go
• internal/server/cmt_rpc/server.go
• internal/server/cmt_rpc/websocket.go
• internal/server/cmt_rpc/websocket_test.go
• internal/server/cosmos_grpc/compat_review_test.go
• internal/server/cosmos_grpc/director.go
• internal/server/cosmos_grpc/handler.go
• internal/server/cosmos_grpc/history.go
• internal/server/cosmos_grpc/history_methods.go
• internal/server/cosmos_grpc/history_methods_review_test.go
• internal/server/cosmos_grpc/history_test.go
• internal/server/cosmos_grpc/server.go
• internal/server/cosmos_grpc/web.go
• internal/server/cosmos_grpc/web_test.go
• internal/server/http.go
• tools/generate-history-methods.py
• tools/test_generate_history_methods.py

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[linear]

ID-1610

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	github.com/​traefik/​grpc-web@​v0.16.0
	github.com/​rs/​cors@​v1.11.1

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