refactor: replace headless_chrome with lighter alternatives

docs/architecture.md

@@ -8,7 +8,7 @@
 | Frontend | HTML + HTMX + minimal JS |
 | Database | SurrealDB (graph, document, vector) |
 | AI | OpenAI-compatible API |
-| Web Processing | Headless Chromium |
+| Web Processing | Servo engine (servo-fetch) + PDFium |
 
 ## Crate Structure
 

docs/features.md

@@ -10,7 +10,7 @@
 
 Minne automatically processes saved content:
 
-1. **Web scraping** extracts readable text from URLs (via headless Chrome)
+1. **Web scraping** extracts readable text from URLs (via embedded Servo engine)
 2. **Text analysis** identifies key concepts and relationships
 3. **Graph creation** builds connections between related content
 4. **Embedding generation** enables semantic search
@@ -43,6 +43,7 @@ Optional **reranking** can rescore fused chunk lists with a cross-encoder model;
 When enabled, retrieval results are rescored with a cross-encoder model for improved relevance. Powered by [fastembed-rs](https://github.com/Anush008/fastembed-rs).
 
 **Trade-offs:**
+
 - Downloads ~1.1 GB of model data
 - Adds latency per query
 - Potentially improves answer quality, see [blog post](https://blog.stark.pub/posts/eval-retrieval-refactor/)
@@ -52,6 +53,7 @@ Enable via `RERANKING_ENABLED=true`. See [Configuration](./configuration.md).
 ## Multi-Format Ingestion
 
 Supported content types:
+
 - Plain text and notes
 - URLs (web pages)
 - PDF documents

docs/installation.md

@@ -12,13 +12,13 @@ cd minne
 docker compose up -d
 ```
 
-The included `docker-compose.yml` handles SurrealDB and Chromium automatically.
+The included `docker-compose.yml` handles SurrealDB automatically.
 
 **Required:** Set your `OPENAI_API_KEY` in `docker-compose.yml` before starting.
 
 ## Nix
 
-Run Minne directly with Nix (includes Chromium):
+Run Minne directly with Nix:
 
 ```bash
 nix run 'github:perstarkse/minne#main'
@@ -31,8 +31,9 @@ Configure via environment variables or a `config.yaml` file. See [Configuration]
 Download binaries for Windows, macOS, and Linux from [GitHub Releases](https://github.com/perstarkse/minne/releases/latest).
 
 **Requirements:**
+
 - SurrealDB instance (local or remote)
-- Chromium (for web scraping)
+- `libEGL` + `libfontconfig` (for servo-fetch web scraping)
 
 ## Build from Source
 
@@ -45,9 +46,10 @@ cargo build --release --bin main
 The binary will be at `target/release/main`.
 
 **Requirements:**
+
 - Rust toolchain
 - SurrealDB accessible at configured address
-- Chromium in PATH
+- `libEGL` + `libfontconfig` for servo-fetch (web scraping) — bundled in Nix and Docker images
 
 ## Process Modes