RuDS/docs/COMPATIBILITY_INVENTORY.md

bDS Compatibility Inventory: TypeScript vs Rust

Tracks feature parity between the TypeScript bDS app and the Rust rewrite (RuDS).

Legend: [x] implemented/verified, [ ] not yet implemented

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Database Schema

• projects table
• posts table (with published_* legacy columns)
• post_translations table
• media table
• media_translations table (mediaTranslations)
• tags table
• templates table (with kind/status defaults matching TypeScript)
• scripts table (with kind/status defaults matching TypeScript)
• post_links table (postLinks)
• post_media table
• settings table
• generated_file_hashes table
• db_notifications table
• chat_conversations table
• chat_messages table
• ai_providers table
• ai_models table
• ai_model_modalities table
• ai_catalog_meta table
• embedding_keys table
• dismissed_duplicate_pairs table
• import_definitions table
• All 10 unique indexes
• FTS5 virtual tables (posts_fts, media_fts) -- present in fixture DB, runtime creation deferred to M1
• Default values match TypeScript (status, kind, enabled, version, entrypoint)

File Formats

• Post frontmatter (YAML) read/write
• Translation file format (posts/YYYY/MM/slug.lang.md)
• Media sidecar (.meta) read/write
• Template frontmatter read/write
• Script frontmatter read/write
• meta/tags.json
• meta/project.json
• meta/categories.json
• meta/category-meta.json
• meta/publishing.json
• meta/menu.opml

Slug Generation

• Basic transliteration (Unicode to ASCII, lowercase, hyphens, trim)
• German umlauts: ae/oe/ue/ss/Ae/Oe/Ue (matches TypeScript transliteration npm)
• Uniqueness: base, then {slug}-2..999, then {slug}-{timestamp}

Content Location

• Published posts have NULL content in DB, body in filesystem .md
• Draft posts have content in DB
• Published translations have NULL content in DB
• Published templates have NULL content in DB
• Published scripts have NULL content in DB

Rendering

• Liquid template rendering (subset: if/elsif/else, for, assign, render, whitespace stripping)
• Liquid filters: escape, url_encode, default, append, i18n, markdown
• Markdown rendering via pulldown-cmark
• Built-in macros: gallery, youtube, vimeo, photo_archive, tag_cloud
• RSS/Atom feed generation
• Sitemap generation
• Generated file hash tracking (incremental)
• Pagefind search index generation (via pagefind crate library API)

Search

• FTS5 post indexing with Snowball stemmers (24 languages)
• FTS5 media indexing
• Cross-language stemming

Publishing

• SSH/SCP upload
• Rsync upload
• Three parallel upload targets (html, thumbnails, media)
• .meta files excluded from upload

AI Integration

• Two-endpoint model (online + airplane)
• One-shot operations (translate, analyze, etc.)
• Chat with tool use
• Model catalog refresh
• Secure key storage (OS keychain)

Thumbnails

• Small (150px), Medium (400px), Large (800px), AI (448x448 JPEG)
• WEBP output

MCP Server

• HTTP + stdio transports
• Read-only tools
• Proposal-based write tools