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/dsda-doom.yml

@@ -4,7 +4,11 @@ core_classification: game_engine
 source: "https://github.com/dsda-org/dsda-doom"
 profiled_date: "2026-10-20"
 source_commit: "e443ff7a3e6090a1ff92ad7a426916c4fd35ecc5"
-core_version: "0.29.4"
+core_version: "v0.29.4"
+version_basis:
+  kind: tag
+  tag: "v0.29.4"
+  distance: 0
 display_name: "Doom (dsda-doom)"
 cores: [dsda-doom]
 systems: [doom, heretic, hexen, chex]