feat: finishing of M0

docs/COMPATIBILITY_INVENTORY.md

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+# 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
+
+---
+
+## Database Schema
+
+- [x] projects table
+- [x] posts table (with published_* legacy columns)
+- [x] post_translations table
+- [x] media table
+- [x] media_translations table (mediaTranslations)
+- [x] tags table
+- [x] templates table (with kind/status defaults matching TypeScript)
+- [x] scripts table (with kind/status defaults matching TypeScript)
+- [x] post_links table (postLinks)
+- [x] post_media table
+- [x] settings table
+- [x] generated_file_hashes table
+- [x] db_notifications table
+- [x] chat_conversations table
+- [x] chat_messages table
+- [x] ai_providers table
+- [x] ai_models table
+- [x] ai_model_modalities table
+- [x] ai_catalog_meta table
+- [x] embedding_keys table
+- [x] dismissed_duplicate_pairs table
+- [x] import_definitions table
+- [x] All 10 unique indexes
+- [x] FTS5 virtual tables (posts_fts, media_fts) -- present in fixture DB, runtime creation deferred to M1
+- [x] 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
+
+- [x] Basic transliteration (Unicode to ASCII, lowercase, hyphens, trim)
+- [x] German umlauts: ae/oe/ue/ss/Ae/Oe/Ue (matches TypeScript transliteration npm)
+- [x] Uniqueness: base, then {slug}-2..999, then {slug}-{timestamp}
+
+## Content Location
+
+- [x] Published posts have NULL content in DB, body in filesystem .md
+- [x] Draft posts have content in DB
+- [x] Published translations have NULL content in DB
+- [x] Published templates have NULL content in DB
+- [x] 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

docs/ICED_ARCHITECTURE_PATTERNS.md

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+# Iced Architecture Patterns (bDS Rust Rewrite)
+
+Iced 0.13, wgpu renderer, muda for native menus, rfd for file dialogs.
+
+## Message Design
+
+- Root `Message` enum in `app.rs`: `MenuEvent(MenuId)`, `Noop`, plus child view variants.
+- Child view messages wrapped in parent enum variants: `Message::Editor(editor::Message)`.
+- Keep messages flat where possible -- avoid deep nesting beyond two levels.
+- Use `Task<Message>` for async operations (file I/O, dialogs, database queries).
+- Noop absorbs events that need no action (e.g., unhandled menu IDs).
+
+## Subscription Model
+
+- Menu events: `iced::event::listen_with` polling `MenuEvent::receiver().try_recv()` each tick.
+- Future: filesystem watcher subscription for external db/file changes.
+- Subscriptions are declarative -- `subscription()` returns the full set every frame; Iced diffs internally.
+- Each subscription keyed by a unique ID to avoid duplicates.
+
+## Custom Widget Pattern (CodeEditor)
+
+- Implements `iced::advanced::Widget<Message, Theme, Renderer>`.
+- Persistent state via `widget::tree::State` holding `EditorState` (cursor pos, selection, scroll offset).
+- `tag()` returns `TypeId::of::<EditorState>()` for widget tree identity.
+- `state()` returns `State::new(EditorState::default())` for initialization.
+- `on_event()` handles keyboard/mouse input, returns `Status::Captured` or `Status::Ignored`.
+- `draw()` uses `renderer.fill_quad()` for backgrounds/cursors/gutters, `renderer.fill_text()` for content.
+- Takes `&mut EditorBuffer` reference for direct mutation on input -- buffer is not owned by the widget.
+- Focus management: `is_focused` flag in `EditorState`, set on mouse press inside bounds, cleared on press outside.
+
+## Platform Integration
+
+- muda menus built once at startup; call `init_for_nsapp()` on macOS before event loop.
+- Menu IDs stored in a map (`HashMap<MenuId, Message>`) for routing `MenuEvent` to app `Message`.
+- macOS lifecycle hooks (`application:openFile:`, `openURLs:`) via objc2 -- deferred to M2.
+- rfd dialogs: `rfd::AsyncFileDialog` spawned behind `Task::perform`, result mapped to a `Message` variant.
+
+## Rendering
+
+- Iced uses cosmic-text internally for text shaping and layout.
+- Custom widgets call `renderer.fill_text()` with a `Text` struct: font, size, bounds, horizontal/vertical alignment.
+- Use `Font::MONOSPACE` for the editor, default system font for UI chrome.
+- `renderer.fill_quad()` for solid-color rectangles: backgrounds, cursor bar, gutter column, selections.
+- Clipping: call `renderer.with_layer()` to restrict drawing to widget bounds.
+
+## State Management
+
+- Top-level app state lives in `BdsApp` struct (db connection, open buffers, UI flags).
+- Child widget state in `widget::tree::State` -- survives across `view()` calls as long as widget identity matches.
+- `EditorBuffer` (rope-based text buffer via ropey) owned by `BdsApp`, passed as `&mut` to widget on `view()` and `on_event()`.
+- Database connection (`rusqlite::Connection`) opened once at startup, held in `BdsApp`, not cloned.
+- No global mutable state -- everything flows through the `Message` -> `update()` -> `view()` cycle.