fix: disable native touch panning on mobile terminal and archive specs

- Change mobile terminal CSS to use touch-action: none and
  overscroll-behavior: none so the custom touch handler owns swipes
- Archive completed/partial OpenSpec specs to
  openspec/changes/archive/2026-06-14-completed-specs-archive/
- Regenerate project maps

Quality gates: npm run typecheck, npm run lint (apps/web)

openspec/changes/archive/2026-06-14-completed-specs-archive/.pi-map.md

@@ -0,0 +1,19 @@
+# 2026-06-14-completed-specs-archive
+dir: 2026-06-14-completed-specs-archive
+
+index: 2026-06-14-completed-specs-archive/.pi-map.index.md
+
+## role
+Historical archive for completed and audited OpenSpec specifications that are no longer active in the project.
+## files
+- README.md | Documents archived OpenSpec specifications that have been audited against the source tree and moved to historical reference.
+## arch
+Simple archival directory structure with README-based documentation; no active code or runtime architecture.
+## tags
+readme, documents, archived, openspec, specifications, have, been, audited
+## symbols
+-
+## workflows
+-
+## dirty
+-