feat(relay): adopt RELAY spec v1.0 stable (#27) (#28)

- Bump github.com/SoundMatt/RELAY v0.8.0 → v1.0.0
- SpecVersion now tracks relay.SpecVersion (= "1.0") so the two cannot
  drift, per the go-RCP pattern recommended in the issue
- v1.0 has no normative changes from v0.3 (stability promotion only), so
  no other source changes are required

Verified with `relay conform`:
  PASS §12.1 version document schema
  PASS §12.2 capabilities document schema
  PASS §12.3 status document schema

Closes #27

Signed-off-by: Matt Jones <47545907+SoundMatt@users.noreply.github.com>

Author: SoundMatt

go.mod

@@ -2,4 +2,4 @@ module github.com/SoundMatt/go-LIN
 
 go 1.25.0
 
-require github.com/SoundMatt/RELAY v0.8.0
+require github.com/SoundMatt/RELAY v1.0.0

go.sum

@@ -1,2 +1,2 @@
-github.com/SoundMatt/RELAY v0.8.0 h1:wIvyvMeLvHtNXuxrs0R+HET+F74yO+FWbMD8UhocezQ=
-github.com/SoundMatt/RELAY v0.8.0/go.mod h1:8HXkxErdk4pHaM1de9eopm2S8o1aE7tKYkCBBsHxxcg=
+github.com/SoundMatt/RELAY v1.0.0 h1:eb4PvxHrJd0jsR97zBHOeTNJZXB69S3MWFpaknJho6c=
+github.com/SoundMatt/RELAY v1.0.0/go.mod h1:8HXkxErdk4pHaM1de9eopm2S8o1aE7tKYkCBBsHxxcg=

lin.go

@@ -36,7 +36,8 @@ import (
 )
 
 // SpecVersion is the RELAY specification version this package implements.
-const SpecVersion = "0.3"
+// It tracks the linked RELAY module so the two cannot drift.
+const SpecVersion = relay.SpecVersion
 
 // LINMaxDataLen is the maximum number of data bytes in a LIN frame payload.
 const LINMaxDataLen = 8

relay_vectors_test.go

@@ -46,6 +46,15 @@ func loadVector(t *testing.T, path string) vector {
 	return v
 }
 
+// ── SpecVersion tracks the linked RELAY module ────────────────────────────────
+
+func TestSpecVersion_tracksRelay(t *testing.T) {
+	if lin.SpecVersion != relay.SpecVersion {
+		t.Errorf("lin.SpecVersion = %q; must track relay.SpecVersion = %q",
+			lin.SpecVersion, relay.SpecVersion)
+	}
+}
+
 // ── Golden frame vector: canonical JSON, ToMessage, FromMessage round-trip ────
 
 func TestVector_linFrame_canonicalJSON(t *testing.T) {