docs: replace Setup section with Development guide

Removed the outdated Setup documentation and introduced a new Development section that includes cloning instructions, spec setup steps, and guidance on building the knowledge graph for custom ECMAScript specifications. This reorganization clarifies the workflow for developers and users building the project from source.

Readme.md

@@ -33,18 +33,6 @@ cd ask262
 bun install
 ```
 
-## Setup
-
-1. **Ensure spec is present** (only external requirement):
-   - `./spec-built/multipage/` - ECMAScript spec HTML files
-   
-   *Note: `storage/` (pre-built vectors), `engine262/lib/`, and `graphology/` are included in the package.*
-
-2. **Build knowledge graph** (first time only, if using custom spec):
-   ```bash
-   bun run build
-   ```
-
 ## MCP Configuration
 
 Add to your MCP client configuration using `bunx` (no installation required):
@@ -94,6 +82,25 @@ bun run test-evaluate-timeout
 bun run test-search-spec-sections
 ```
 
+## Development
+
+For development or using a custom ECMAScript specification:
+
+1. **Clone and setup**:
+   ```bash
+   git clone https://github.com/bendtherules/ask262
+   cd ask262
+   bun install
+   ```
+
+2. **Ensure spec is present**:
+   - `./spec-built/multipage/` - ECMAScript spec HTML files
+
+3. **Build knowledge graph** (if using custom spec):
+   ```bash
+   bun run build
+   ```
+
 ## License
 
 ISC