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/bstone.yml

@@ -6,6 +6,10 @@ upstream: "https://github.com/bibendovsky/bstone"
 profiled_date: "2026-10-04"
 source_commit: "e65a6b40b960a409d7ea840580c2431f56fb6fd4"
 core_version: "v1.3.4"
+version_basis:
+  kind: tag
+  tag: "v1.3.4"
+  distance: 0
 display_name: "Blake Stone (BStone)"
 cores: [bstone]
 systems: [blake-stone]