Offline dictionary (#45)

* Added support for external dictionary apps and a dictionary settings sheet.

* Refactored external dictionary integration and improved package visibility

 - Updated `AndroidManifest.xml` with `<queries>` for common dictionary apps and intent actions (`PROCESS_TEXT`, `SEARCH`, `SEND`) to support Android 11+ package visibility.
 - Refactored `ExternalDictionaryHelper` to streamline dictionary discovery using `Intent.ACTION_PROCESS_TEXT` and `colordict.intent.action.SEARCH`.
 - Added a package blocklist in `ExternalDictionaryHelper` to filter out system services (e.g., Samsung Pass, GMS) from dictionary lists.
  - Simplified `launchDictionary` logic to prioritize `PROCESS_TEXT` intents.
 - Fixed a bug in `PdfViewerScreen` to only show the dictionary upsell dialog when `useOnlineDictionary` is enabled.

* Refactored dictionary settings into a dialog and updated dictionary selection logic.

- Renamed `DictionarySettingsSheet` to `DictionarySettingsDialog` and converted it from a bottom sheet to a formal dialog.
- Redesigned the dictionary settings UI with a clearer distinction between AI and external app modes.
- Added a "Search" option to the external dictionary list that triggers a web search.
- Updated `ExternalDictionaryHelper` to include a package blocklist and support for generic web search intents.
- Simplified `PdfHelper` by removing Pro user checks for the "Dictionary" action.
- Updated icons for dictionary settings across the EPUB and PDF readers.

app/src/main/java/com/aryan/reader/epubreader/EpubReaderAi.kt

@@ -227,21 +227,16 @@ suspend fun executeRecapLogic(
  */
 @Composable
 fun EpubReaderAiOverlays(
-    // Summarization State
     showSummarizationPopup: Boolean,
     summarizationResult: SummarizationResult?,
     isSummarizationLoading: Boolean,
     onDismissSummarization: () -> Unit,
     showSummarizationUpsellDialog: Boolean,
     onDismissSummarizationUpsell: () -> Unit,
-
-    // Recap State
     showRecapPopup: Boolean,
     recapResult: SummarizationResult?,
     isRecapLoading: Boolean,
     onDismissRecap: () -> Unit,
-
-    // Dictionary State
     showAiDefinitionPopup: Boolean,
     selectedTextForAi: String?,
     aiDefinitionResult: AiDefinitionResult?,
@@ -249,10 +244,9 @@ fun EpubReaderAiOverlays(
     onDismissAiDefinition: () -> Unit,
     showDictionaryUpsellDialog: Boolean,
     onDismissDictionaryUpsell: () -> Unit,
-
-    // Navigation
     onNavigateToPro: () -> Unit,
-    isTtsSessionActive: Boolean
+    isTtsSessionActive: Boolean,
+    onOpenExternalDictionary: (String) -> Unit
 ) {
     if (showSummarizationPopup) {
         SummarizationPopup(
@@ -298,7 +292,11 @@ fun EpubReaderAiOverlays(
             result = aiDefinitionResult,
             isLoading = isAiDefinitionLoading,
             onDismiss = onDismissAiDefinition,
-            isMainTtsActive = isTtsSessionActive
+            isMainTtsActive = isTtsSessionActive,
+            // Pass it down
+            onOpenExternalDictionary = {
+                selectedTextForAi?.let { text -> onOpenExternalDictionary(text) }
+            }
         )
     }