Add ChatGPT-style projects with cross-chat context sharing:
- Database schema v6 with projects, projectLinks, chatChunks tables
- Project CRUD operations and storage layer
- ProjectsState store with Svelte 5 runes
- Cross-chat context services (summaries, chat indexing, context assembly)
- Project context injection into ChatWindow system prompt
- ProjectFolder collapsible component in sidebar
- ProjectModal for create/edit with Settings, Instructions, Links tabs
- MoveToProjectModal for moving conversations between projects
- "New Project" button in sidebar
- "Move to Project" action on conversation items
Conversations in a project share awareness through:
- Project instructions injected into system prompt
- Summaries of other project conversations
- RAG search across project chat history (stub)
- Reference links
- Add "Processing X files..." indicator in chat while handling attachments
- Indicator transitions to "Analyzing X files..." for large files needing LLM summarization
- Reuse streaming message for seamless transition to LLM response
- Add FileAnalyzer service for large file summarization with 10s timeout
- Skip analysis for borderline files (within 20% of 8K threshold)
- Read up to 50KB from original file for analysis (not just truncated content)
- Remove base64 blobs from JSON before analysis to reduce prompt size
- Add AttachmentDisplay component for showing file badges on messages
- Persist attachments to IndexedDB with message references
- Add chat state methods: setStreamContent, removeMessage
- Clean up debug logging
Adds two related features for enhanced model customization:
**Model-Specific System Prompts:**
- Assign prompts to models via Settings > Model Prompts
- Capability-based default prompts (vision, tools, thinking, code)
- Auto-select appropriate prompt when switching models in chat
- Per-model prompt mappings stored in IndexedDB
**Custom Ollama Model Creation:**
- Create custom models with embedded system prompts via Models page
- Edit system prompts of existing custom models
- Streaming progress during model creation
- Visual "Custom" badge for models with embedded prompts
- Backend handler for Ollama /api/create endpoint
New files:
- ModelEditorDialog.svelte: Create/edit dialog for custom models
- model-creation.svelte.ts: State management for model operations
- model-prompt-mappings.svelte.ts: Model-to-prompt mapping store
- model-info-service.ts: Fetches and caches model info from Ollama
- modelfile-parser.ts: Parses system prompts from Modelfiles
