Remove all legacy and backward compatibility support

- Remove serviceFqn, offers array from PublishServiceOptions
- Make service and maxOffers required fields
- Simplify publishService() to only support automatic mode
- Remove RondevuSignaler class completely
- Update exports to include new types (ConnectionContext, ConnectToServiceOptions)
- Update test-connect.js to use connectToService()
- Remove all "manual mode" and "legacy" references from documentation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/index.ts

@@ -5,7 +5,6 @@
 
 export { Rondevu } from './rondevu.js'
 export { RondevuAPI } from './api.js'
-export { RondevuSignaler } from './rondevu-signaler.js'
 export { RpcBatcher } from './rpc-batcher.js'
 
 // Export crypto adapters
@@ -27,9 +26,14 @@ export type {
     IceCandidate,
 } from './api.js'
 
-export type { RondevuOptions, PublishServiceOptions } from './rondevu.js'
-
-export type { PollingConfig } from './rondevu-signaler.js'
+export type {
+    RondevuOptions,
+    PublishServiceOptions,
+    ConnectToServiceOptions,
+    ConnectionContext,
+    OfferContext,
+    OfferFactory
+} from './rondevu.js'
 
 export type { CryptoAdapter } from './crypto-adapter.js'