On Windows 11 ARM64 build 26200 Explorer splits its own command line at
commas and equals signs and rejects percent-encoded non-ASCII in a file
URI, falling back to the Documents folder in both cases without reporting
it. `explorerTarget()` now escapes `=` next to `,` and decodes Node's
non-ASCII escapes back to the literal characters the shell resolves, so
the two rules stay in one place. The Agent Note and the target-encoding
table record the measured behavior.
mektpoy
2b9923fede