docs: add quickstart compose file; condense README features section

Adds docker-compose.quickstart.yml that pulls the pre-built image from
the registry so users can get started without a local build. Updates
README Quick Start to use the new file as the default path.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -4,30 +4,26 @@ A self-hosted second brain and project management application with integrated LL
 
 ## Features
 
-- **Notes** — Markdown editor (Tiptap), wikilinks, backlinks, tags, version history, AI writing assist
-- **Tasks** — Status, priority, due dates, sub-tasks, milestones, work logs
-- **Projects** — Kanban view, milestone progress, three-panel project workspace (tasks / chat / notes)
-- **AI Chat** — SSE streaming, RAG, tool calls (create/update content, search web, check weather, calendar)
-- **Daily Briefing** — Scheduled digest of tasks, calendar, weather, and RSS; interactive follow-up conversation
-- **Knowledge Graph** — D3 force-directed graph of all notes and tags
-- **Sharing** — Share projects and notes with users or groups at viewer/editor/admin permissions
-- **Fable MCP** — MCP server for Claude and other clients to read/write your data via API keys
-- **PWA** — Installable, push notifications, web and Android companion app
+Notes and tasks with a Markdown editor, sub-tasks, milestones, and kanban project workspaces. AI chat with streaming responses, RAG over your notes, and tool use (web search, calendar, weather). A daily briefing that digests your tasks, RSS feeds, and weather on a schedule. Knowledge graph, per-user/group sharing, PWA with push notifications, an MCP server for external AI clients, and an Android companion app.
 
 ## Quick Start
 
 **Prerequisites:** Docker and Docker Compose. 8 GB+ RAM recommended for LLM inference.
 
+Download [`docker-compose.quickstart.yml`](docker-compose.quickstart.yml) from this repo, then:
+
 ```bash
-git clone https://git.fabledsword.com/bvandeusen/FabledAssistant.git
-cd FabledAssistant
-cp .env.example .env          # Edit .env to set SECRET_KEY
-docker compose up --build
+# Optional but recommended — set a secret key
+export SECRET_KEY=your-random-secret-here
+
+docker compose -f docker-compose.quickstart.yml up -d
 ```
 
-Open `http://localhost:5000`. The first user to register becomes admin.
+Open `http://localhost:5000`. The first user to register becomes admin. Go to **Settings → General** to pull an LLM model — `qwen3:8b` or `llama3.1:8b` are good starting points.
 
-Go to **Settings → General** to pull an LLM model. `qwen3:8b` or `llama3.1:8b` are good starting points.
+> **GPU:** Ollama runs CPU-only by default. See the comments in `docker-compose.quickstart.yml` to enable NVIDIA GPU passthrough.
+
+> **Development:** To build from source, see [Development](docs/development.md).
 
 ## Documentation