# Diffdown

Collaborative Markdown editor with real-time preview, version history, and multi-file repository support.

## Running locally

```bash
# Set env vars (or use defaults for dev)
export DIFFDOWN_SESSION_SECRET="your-secret-here"
export BASE_URL="http://127.0.0.1:8080"

# Build and run
go build -o diffdown ./cmd/server
./diffdown
```

Server starts on `:8080`.

## Note on CodeMirror

The editor template references CodeMirror 6 modules at `/static/vendor/codemirror.js` and `/static/vendor/codemirror-lang-markdown.js`. You'll need to bundle these yourself (or use a CDN). A quick way:

```bash
npm init -y
npm install @codemirror/state @codemirror/view @codemirror/lang-markdown codemirror
npx esbuild --bundle --format=esm --outfile=static/vendor/codemirror.js node_modules/codemirror/dist/index.js
npx esbuild --bundle --format=esm --outfile=static/vendor/codemirror-lang-markdown.js node_modules/@codemirror/lang-markdown/dist/index.js
```