fix: state standalone versions from their code

Each standalone profile records where its version is read: the source
at its pin (clk 2026-07-23-136-g9020107, shadps4 0.20.1 WIP, eden
v0.2.0-401-g26a03d2), the APK, binary or archive read (kind package),
or, where no reading can be made, kind unverified with the reason: a
host the tools cannot read, a forge gone or not answering, no build
recorded as read, a pin on another branch. Those keep their value,
unconfirmed.

emulators/3dsen.yml

@@ -8,6 +8,9 @@ version_source:
   pattern: '<title>[Vv](?:ersion\s*)?(\d+(?:\.\d+)+)'
 profiled_date: "2026-08-07"
 core_version: "1.1"
+version_basis:
+  kind: unverified
+  why: no_artifact
 display_name: "3dSen (3D NES)"
 cores:
   - 3dsen