Consolidate redundant unit and e2e tests (cbor, http, logger, receipts)

[achamayou]

Summary

Consolidates several redundant/duplicated tests across the C++ unit test suite and the Python e2e suite, keeping the same behavioural coverage in fewer, clearer test cases.

Changes

• src/crypto/test/cbor.cpp: merges the two separate make_signed positive/negative test cases into a single parameterized test, using doctest's DOCTEST_VALUE_PARAMETERIZED_DATA pattern.
• src/http/test/http_test.cpp: consolidates the parse_want_repr_digest test cases into a single test with subcases, removing duplicated setup.
• src/ds/test/logger.cpp / src/ds/test/logger_json_test.cpp: moves the standalone JSON log format test into the existing logger unit test file, removing the now-redundant logger_json_test binary/target. The moved test now uses RAII guards to reliably restore global logger configuration (loggers, log level) and std::cout's redirected buffer, even if a REQUIRE fails or an exception is thrown.
• CMakeLists.txt: removes the logger_json_test unit-test target (superseded by the above).
• tests/e2e_logging.py: folds the deterministic "fresh tx" receipt checks from test_receipts into test_random_receipts via a new issue_txs_for_receipt_check helper, which issues a batch of transactions and waits for the last one to commit (via infra.commit.wait_for_commit) before returning their seqnos - avoiding flaky NOT_FOUND historical receipt lookups for not-yet-committed COSE receipts.

Testing

• cbor_test: 61/61 test cases, 553/553 assertions passing.
• logger_test: 4/4 test cases, 61/61 assertions passing.
• tests/e2e_logging.py: syntax/lint-checked (py_compile, ruff); full e2e coverage exercised via existing CI.
• scripts/ci-checks.sh -f (C++/Python formatting, ASCII, copyright) run clean.

[Copilot]

Pull request overview

This PR consolidates several redundant tests across the Python e2e suite and C++ unit tests, aiming to reduce duplicated coverage while keeping the same behavioral checks in fewer places.

Changes:

• Refactors tests/e2e_logging.py receipt testing by folding deterministic “fresh tx” coverage into test_random_receipts via a helper that returns additional seqnos to validate.
• Consolidates/streamlines multiple C++ unit tests using DOCTEST_SUBCASE/SUBCASE patterns (HTTP header parsing and CBOR helpers).
• Moves the JSON logger format test into the existing logger unit test file and removes the standalone logger_json_test target.

Custom instructions used:

• .github/copilot-instructions.md
• .github/instructions/reviewing.instructions.md

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/e2e_logging.py	Reworks receipt testing to reuse test_random_receipts with an additional batch of freshly-issued tx seqnos.
src/http/test/http_test.cpp	Consolidates parse_want_repr_digest coverage into a single test case with subcases.
src/ds/test/logger.cpp	Adds JSON log format validation into existing logger unit tests.
src/ds/test/logger_json_test.cpp	Removes the now-redundant standalone JSON logger unit test.
src/crypto/test/cbor.cpp	Merges duplicated make_signed tests into one test case with subcases.
CMakeLists.txt	Removes the logger_json_test unit-test target.
.gitignore	Adds ignore entry for a logger test output file.

[achamayou]

Paused on doctest update