Add WalletConnect dApp module with AppKit integration

[Copilot]

Implements a Kotlin Android dApp module mirroring the reown-kotlin sample dApp — chain selection, WalletConnect session lifecycle, and session request flows using AppKit.

Build system

• Gradle wrapper: 6.7.1 → 7.6.4; AGP: 4.2.2 → 7.4.2
• Added Kotlin 1.9.23 plugin to root build.gradle
• :dapp added to settings.gradle

New :dapp module

Domain

• DappDelegate — singleton AppKit.ModalDelegate + CoreClient.CoreDelegate that republishes all WC events as Kotlin SharedFlows

ViewModels

• ChainSelectionViewModel — creates a WC pairing, manages chain toggle state, maps wallet events to DappSampleEvent
• SessionViewModel — wraps AppKit.ping, AppKit.disconnect, and AppKit.request (personal_sign); exposes loading state and one-shot events

Screens (View-based, no Compose)

• ChainSelectionFragment — RecyclerView chain list with loading indicator while awaiting wallet response
• SessionFragment — peer info, accounts, ping/sign/disconnect actions
• PairingUriDialogFragment — copy-to-clipboard or direct wallet deep-link for the WC URI

Shared utility

• util/StringExtensions.kt — String.encodeToHex() for EVM personal_sign payloads

// DappDelegate bridges AppKit callbacks → Flows consumed by ViewModels
override fun onSessionApproved(approvedSession: Modal.Model.ApprovedSession) {
    if (approvedSession is Modal.Model.ApprovedSession.WalletConnectSession) {
        selectedSessionTopic = approvedSession.topic
    }
    scope.launch { _wcEventModels.emit(approvedSession) }
}

Project ID is injected at build time via WC_CLOUD_PROJECT_ID env var — never hardcoded.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• dl.google.com
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-opens=java.base/java.nio.charset=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED -Xmx2048m -Dfile.encoding=UTF-8 -Duser.country -Duser.language=en -Duser.variant -cp /home/REDACTED/.gradle/wrapper/dists/gradle-7.6.4-all/39vjj63r4f4sim2tgn0oekese9/gradle-7.6.4/lib/gradle-launcher-7.6.4.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 7.6.4 (dns block)
• https://api.github.com/repos/reown-com/reown-kotlin/contents/sample/dapp
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

https://github.com/reown-com/reown-kotlin/tree/b20e813b09f5dc56bcbcc679c3a66c633250f776/sample/dapp

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