Expose internal stack introspection APIs as a statistical runtime analysis tool

Feature or enhancement

Implement a new high-frequency runtime observer that leverages the existing _remote_debugging module to collect detailed execution statistics from running Python processes. This tool enables non-intrusive observation of production applications by attaching to already-running processes without requiring any code modifications, restarts, or special startup flags. The observer can perform extremely high-frequency sampling of stack traces and interpreter state, providing detailed runtime execution analysis of live applications.

Linked PRs

• gh-135998
• gh-136777
• gh-138304
• gh-138715
• gh-138721
• gh-138875
• gh-138880
• gh-139364
• gh-139485
• gh-141666
• gh-141689
• gh-141719
• gh-146045

首先阅读现有的 _remote_debugging 模块以及 issue 中列出的相关 PRs，因为它们似乎包含当前正在进行的实现工作。在估算范围之前，确定预期使用哪些堆栈自省 API 以及 observer 的行为；只有当约定的运行时分析工具能够附加到正在运行的 Python 进程，并在不修改代码或重启的情况下收集指定的统计信息时，该 issue 才算完成。