Add in-app chat knowledge guide with intro, code example, scenario design, and explanation

[Copilot]

This change adds a lightweight in-app learning entry for the chat project, covering 知识点介绍、编写代码、场景设计与解释 in a single screen. The goal is to make the app itself provide a concise technical walkthrough instead of requiring external documentation.

• New guide screen

  • Added ChatKnowledgeActivity as a dedicated screen for educational content
  • Introduced a simple scrollable layout with four sections:
    • 知识点介绍
    • 编写代码
    • 场景设计
    • 解释说明

• Navigation

  • Added a new menu action in the conversation list to open the guide screen
  • Registered the new activity in the Android manifest

• Content structure

  • Added ChatKnowledgeContentProvider to centralize the guide definition
  • Moved all user-facing content into strings.xml so the screen content is resource-backed and easier to maintain/localize

• Focused test coverage

  • Added a unit test to verify the content provider maps each section to the expected string resource

Example of the guide content wiring:

val content = ChatKnowledgeContentProvider.getContent()
findViewById<TextView>(R.id.tv_knowledge_intro).setText(content.introductionResId)
findViewById<TextView>(R.id.tv_knowledge_code).setText(content.codeExampleResId)
findViewById<TextView>(R.id.tv_knowledge_scenario).setText(content.scenarioDesignResId)
findViewById<TextView>(R.id.tv_knowledge_explanation).setText(content.explanationResId)

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.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED --add-opens=java.base/java.util=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 --add-opens=java.xml/javax.xml.namespace=ALL-UNNAMED -Xmx2048m -Dfile.encoding=UTF-8 -Duser.country -Duser.language=en -Duser.variant -cp /home/REDACTED/.gradle/wrapper/dists/gradle-8.13-bin/5xuhj0ry160q40clulazy9h7d/gradle-8.13/lib/gradle-daemon-main-8.13.jar (dns block)
  • 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 (dns 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

给出知识点介绍，编写代码，场景设计与解释

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.