starknet_transaction_prover: add TLS integration tests

[avi-starkware]

Summary

• Add 5 TLS tests: HTTPS request succeeds with self-signed cert, plain HTTP to TLS fails, missing cert file, missing key file, invalid PEM content
• Use rcgen (new workspace dev-dependency) to generate self-signed certs at test time, avoiding committed fixtures that expire
• Make load_tls_acceptor pub(crate) for unit-level testing

Test plan

• SEED=0 cargo test -p starknet_transaction_prover -- tls_test — 5 tests pass
• SEED=0 cargo test -p starknet_transaction_prover --lib — 103 pass, 0 fail, 6 ignored

🤖 Generated with Claude Code

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Note

Low Risk
Low risk: changes are test-only plus a minor visibility tweak (pub(crate)) with no production logic changes.

Overview
Adds a new tls_test.rs suite that spins up the JSON-RPC server over HTTPS with a self-signed certificate and validates both success (HTTPS starknet_specVersion) and failure modes (HTTP-to-TLS, missing cert/key files, invalid PEM).

Introduces rcgen as a (dev) dependency to generate certificates at test time, and makes load_tls_acceptor pub(crate) so it can be unit-tested.

^{Written by Cursor Bugbot for commit 6b00901. This will update automatically on new commits. Configure here.}

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[avi-starkware]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• starknet_transaction_prover: add deployment smoke test script #13159
• starknet_transaction_prover: add manual and deployment smoke testing guides #13158
• starknet_transaction_prover: add TLS integration tests #13138 👈 (View in Graphite)
• starknet_transaction_prover: add CORS and config validation tests #13136
• starknet_transaction_prover: add exhaustive error enum and error mapping tests #13135
• starknet_transaction_prover: add committer utils unit tests #13134
• starknet_transaction_prover: add prover input validation unit tests #13133
• starknet_transaction_prover: sanitize error messages returned to clients #13132
• starknet_transaction_prover: add ConfigMap docs and full config reference #13167
• starknet_transaction_prover: add external developer docs #13129
• starknet_transaction_prover: validate request inputs before proving #13125
• main-v0.14.2

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

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