Fix canonical Vontology name projection

[witbrock]

Outcome

Finishes the type-name formatting repair by removing the last user-visible ID-derived acronym splitting and preserving authored Unicode/RTL display text.

Changes

• Resolve node_content.display_name and reconstructed headings from canonical hasName relations, with fail-soft legacy fallback.
• Avoid duplicate relation reads on raw-only and chat-reference paths that already resolve canonical names.
• Stop treating synthetic node-content headings or rendered HTML as descriptions; retain exact persisted legacy Markdown only.
• Apply dir="auto" to description display and edit fields.

Validation

• 17 affected backend tests passed.
• 34 focused frontend tests passed.
• Python compile and focused Ruff checks passed.
• ESLint: 0 errors (pre-existing warnings only).
• git diff --check and JavaScript syntax checks passed.
• Independent review: merge-ready, no blockers.

Merge decision does not change: ready to merge. The broader virtual-code suite has three unrelated pre-existing route-status failures; 24 neighbouring tests in that file pass.