Enhance AI Agent Profile Interaction

This commit introduces several enhancements to how AI agent profiles are displayed and interacted with:

**Profile Display:**
- **AI Account Distinction:** Profile pages now differentiate between regular user accounts and AI agent accounts.
    - AI agent profiles will not display the "Agents" tab in their profile.
    - The profile header height is adjusted for AI accounts.
- **Navigation Parameter:** An `isAiAccount` boolean parameter is added to the `AccountProfile` navigation route to indicate if the profile being viewed belongs to an AI.

**Interaction & Navigation:**
- **Avatar Click Navigation:**
    - Clicking an AI agent's avatar in various lists (Hot Agents, My Agents, User Agents Row, User Agents List) now navigates to the agent's dedicated profile page.
    - When navigating to an agent's profile from an agent list, `isAiAccount` is set to `true`.
- **Chat Initiation:** Clicking the chat button on AI agent cards in the "Agent" tab (both Hot and My Agents) now correctly initiates a chat with the respective AI.
- **ViewModel Updates:**
    - `AgentViewModel`, `MineAgentViewModel`, and `HotAgentViewModel` now include a `goToProfile` function to handle navigation to agent profiles, correctly passing the `isAiAccount` flag.

**Code Refinements:**
- Click handlers for agent avatars and chat buttons are now wrapped with `DebounceUtils.simpleDebounceClick` to prevent multiple rapid clicks.
- The `UserContentPageIndicator` now conditionally hides the "Agent" tab based on the `isAiAccount` status.
- `UserAgentsRow` and `UserAgentsList` now accept an `onAvatarClick` callback for navigating to agent profiles.
- `AgentItem` (used in `UserAgentsRow`) and `UserAgentCard` (used in `UserAgentsList`) now handle avatar clicks.
- The general `Agent` composable (used in `AiPostComposable`) now also supports an `onAvatarClick` callback.

app/src/main/java/com/aiosman/ravenow/store.kt

@@ -12,6 +12,7 @@ object AppStore {
     private const val PREFS_NAME = "app_prefs_$STORE_VERSION"
     var token: String? = null
     var rememberMe: Boolean = false
+    var isGuest: Boolean = false
     private lateinit var sharedPreferences: SharedPreferences
     lateinit var googleSignInOptions: GoogleSignInOptions
     fun init(context: Context) {
@@ -36,6 +37,7 @@ object AppStore {
         sharedPreferences.edit().apply {
             putString("token", token)
             putBoolean("rememberMe", rememberMe)
+            putBoolean("isGuest", isGuest)
         }.apply()
     }
 
@@ -43,6 +45,7 @@ object AppStore {
         // shared preferences
         token = sharedPreferences.getString("token", null)
         rememberMe = sharedPreferences.getBoolean("rememberMe", false)
+        isGuest = sharedPreferences.getBoolean("isGuest", false)
     }
 
     fun saveDarkMode(darkMode: Boolean) {