[tontester] Add wrappers for running control queries

[DanShaders]

The only implemented control query is engine.validator.getActorTextStats. One can run it from inside a script via

actor_stats = await full_node.engine_console.get_actor_stats()

Adding support for more queries is as easy as adding them to a switch in is_engine_console_query in tonlib/tonlib/EngineConsoleClient.cpp and writing a wrapper in test/tontester/src/tonlib/engine_console.py.

[github-actions]

@codex review

[chatgpt-codex-connector]

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[DanShaders]

Just an ordinary self-review, nothing to see here.

[DanShaders]

Figure out if stopping a scheduler is fine when there are actors that are stopped but possibly not destroyed. If this is indeed fine, remove ActorCounter and just use std::atomic.

[DanShaders]

Test?

[DanShaders]

Test?

[DanShaders]

Add usage to test_basic.py

[DanShaders]

• Extra ninja -C build install recompiles files because of git watcher

[github-actions]

Findings:

• tdutils/td/utils/MpscPollableQueue.h:27 now uses std::lock_guard/std::mutex, but the header still only includes <utility> and the old td/utils/SpinLock.h. Translation units that include this header directly (for example tonlib/test/online.cpp) will see 'std::mutex' was not declared' compile errors. Please add <mutex> (and drop the unused SpinLock include) so the header is self‑contained.
• test/tonlib/test-ffi-event-loop.cpp:1-3 declares only <chrono>, <thread>, <vector> but later uses std::set (…#209). Without including <set> this test will fail to compile. Add the missing header alongside the other standard includes.
• test/tonlib/test-ffi-awaitable.cpp:13-15 defines static constexpr Tag tags[2]; and immediately takes &tags[2] for continuation_1. Dereferencing the third element of a two-element array is undefined behaviour, even if the pointer is only used for identity comparisons. Use tags + 1 or &tags[1] to stay within bounds.