docs(openspec): archive web stack, profiles, and resources proposals

Complete lifecycle for:
- Web Stack Decision → merged to main
- Profiles MVP → merged to main
- Resources MVP → merged to main

All proposals now marked as archived.

openspec/changes/2025-11-17-profiles-mvp/proposal.md

@@ -1,6 +1,8 @@
 # Proposal: Profiles MVP
 
-Status: draft
+Status: archived
+Archived: 2025-11-17
+Applied: Merged to main via claude/profiles-mvp-2025-11-17
 Authors: Identity Team
 Owners: Identity Lead, Compliance Lead
 Created: 2025-11-17

openspec/changes/2025-11-17-resources-mvp/proposal.md

@@ -1,6 +1,8 @@
 # Proposal: Resources MVP (Public + Members)
 
-Status: draft
+Status: archived
+Archived: 2025-11-17
+Applied: Merged to main via claude/resources-mvp-2025-11-17
 Authors: Content Team
 Owners: Content Lead, Accessibility Lead
 Created: 2025-11-17

openspec/changes/2025-11-17-web-stack-decision/proposal.md

@@ -1,6 +1,8 @@
 # Proposal: Web Stack Decision
 
-Status: draft
+Status: archived
+Archived: 2025-11-17
+Applied: Merged to main via claude/web-stack-decision-2025-11-17
 Authors: Platform Team
 Owners: Architecture Lead, Web Lead
 Created: 2025-11-17