plugins/platforms/photon/adapter.py launches the Node sidecar (and the
spectrum-ts mixed-attachment patch run) via subprocess without creationflags.
On Windows this opens a visible console window on every sidecar (re)start --
and because a failed sidecar is retried on a timer, it flashes repeatedly.
Wire windows_hide_flags() (hermes_cli/_subprocess_compat) into both spawns,
the same helper the discord and whatsapp adapters already use for their
sidecar spawns -- photon was the one platform adapter this pattern missed.
CREATE_NO_WINDOW only (no DETACHED_PROCESS) so the persistent sidecar's
stdin/stdout pipes stay usable for the supervisor.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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