fix(mmf): fall back to Local\ namespace when controller is not elevated

Creating a `Global\TimeMocker_<pid>` mapping requires
`SeCreateGlobalPrivilege`, which an unelevated token (e.g. debug `cargo run`
where the UAC manifest is intentionally skipped) does not have, so
`CreateFileMappingW` returned NULL with `ERROR_ACCESS_DENIED` and the
auto-inject scanner spammed `create MMF Global\TimeMocker_<pid>` for every
enumerated PID.

The UI now tries `Global\` first and falls back to `Local\` on access
denied, with a one-shot log warning so the auto-inject loop doesn't
flood. The hook DLL probes both names on attach so the IPC pairs up
symmetrically. Release builds keep their elevated `Global\` cross-session
reach; debug builds work against same-session targets without admin.

Also adds a dedicated `time-mocker-test-target` crate — a small console
binary that prints all 5 hooked time APIs every second with its own PID
banner, so dev verification can inject into a controlled harness instead
of arbitrary running processes.

Cargo.lock

@@ -2447,6 +2447,13 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "time-mocker-test-target"
+version = "0.1.0"
+dependencies = [
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "time-mocker-ui"
 version = "0.1.0"