[wenyt (wenytang-ms)]

Summary

Fixes #1721.

Windows process discovery currently invokes WMIC.exe, which is no longer available on updated Windows 11 installations. This breaks both the Java process picker and attachment using an explicit processId.

• Replace WMIC with the system Windows PowerShell executable running Get-CimInstance Win32_Process; no PowerShell 7 installation is required.
• Read structured JSON with explicit UTF-8 output, preserving process IDs, parent IDs, command lines, and the existing creation-date format.
• Keep quoted executable paths and JDWP arguments intact, skip inaccessible/empty command lines, and reject malformed output or failed queries.
• Leave Linux/macOS process discovery unchanged and document the Windows discovery mechanism.

Validation

• Reproduced the original spawn ... WMIC.exe ENOENT failure on Windows with WMIC absent.
• npm run compile — passed.
• npm run tslint — passed.
• node_modules\.bin\mocha.cmd --ui tdd out\test\processTree.test.js — 16 tests passed, including live Windows PowerShell/CIM enumeration.
• Live JVM smoke check without WMIC: explicit PID resolution and process-picker discovery resolved the same JVM and debug endpoint; a TCP JDWP handshake succeeded. The picker UI was stubbed for this check.

Regression coverage includes quoted paths, JDWP arguments, missing command lines, chunked/non-ASCII UTF-8 output, empty lists, invalid JSON/records, startup/query/exit failures, and process-tree construction.