Function registerConfigSection

registerConfigSection(name: string, schema: ZodTypeAny): void
Register a custom config section for consumer use.

Must be called before config initialization (i.e., before the first call to getFrameworkConfig()). Registered sections:
1. Are recognized in config files (no "unknown section" warning)
2. Are validated against the provided Zod schema
3. Can be retrieved via getAppConfig(name)
Parameters
- name: string
  Section name as it appears in the config file (e.g., 'myapp')
- schema: ZodTypeAny
  Zod schema to validate the section data
Returns void
Throws
If the section name is reserved, already registered, or config has already been initialized
Example
```
registerConfigSection('myapp', z.object({
  url: z.string().url(),
  api_key: z.string().optional(),
}));
```
- Defined in src/config/extensions.ts:86