diff --git a/docs/spec-change-proposals.md b/docs/spec-change-proposals.md
index 228210a..df4917f 100644
--- a/docs/spec-change-proposals.md
+++ b/docs/spec-change-proposals.md
@@ -42,6 +42,9 @@ does not parse. A new conformance fixture should record the equivalence.
 registers lower-case type names. The address parses but can never match a
 declared type, even under `ascii-insensitive`.
 
+**Decision (founder, 2026-10-18): option (a).** Resource types are
+lower-case in the grammar.
+
 **Options:**
 - **(a) recommended:** restrict `resource-type` in the grammar to lower-case
   ALPHA, DIGIT and `-`. `Ticket=PR42` then parses as an opaque target, which
diff --git a/workplans/MAS-WP-0005-spec-errata-v0-1-1.md b/workplans/MAS-WP-0005-spec-errata-v0-1-1.md
index ab11fb4..8b3614d 100644
--- a/workplans/MAS-WP-0005-spec-errata-v0-1-1.md
+++ b/workplans/MAS-WP-0005-spec-errata-v0-1-1.md
@@ -26,7 +26,7 @@ copies, the fixtures and the implementation together.
 
 ```task
 id: MAS-WP-0005-T01
-status: todo
+status: progress
 priority: high
 state_hub_task_id: "10c0433a-9b25-5b62-987f-2be7e9d49df2"
 ```
@@ -34,6 +34,12 @@ state_hub_task_id: "10c0433a-9b25-5b62-987f-2be7e9d49df2"
 Walk through SCP-1 to SCP-7, settle the open options (SCP-2 (a) or (b),
 SCP-6 split rules), and record which proposals are accepted.
 
+- 2026-10-18: SCP-2 decided as option (a): resource types are lower-case
+  in the grammar. SCP-6 is under discussion. Founder direction: `=` stays
+  canonical and `--` is accepted as a replacement only for endpoints that
+  refuse `=`. A transform profile per recipient/destination may be needed
+  when something we send out must match that destination's requirements.
+
 ## v0.1.1 errata
 
 ```task