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/Common.kt

@@ -104,6 +104,7 @@ import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalFocusManager
 import androidx.compose.ui.platform.LocalSoftwareKeyboardController
 import androidx.compose.ui.platform.testTag
+import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.text.SpanStyle
 import androidx.compose.ui.text.TextLayoutResult
@@ -531,7 +532,8 @@ fun AiDefinitionPopup(
     result: AiDefinitionResult?,
     isLoading: Boolean,
     onDismiss: () -> Unit,
-    isMainTtsActive: Boolean = false
+    isMainTtsActive: Boolean = false,
+    onOpenExternalDictionary: () -> Unit
 ) {
     val ttsController = rememberTtsController()
     val ttsState by ttsController.ttsState.collectAsState()
@@ -642,6 +644,13 @@ fun AiDefinitionPopup(
                                     contentDescription = "Copy"
                                 )
                             }
+                            Spacer(modifier = Modifier.width(8.dp))
+                            IconButton(onClick = onOpenExternalDictionary) {
+                                Icon(
+                                    painter = painterResource(id = R.drawable.dictionary),
+                                    contentDescription = "Open in Dictionary App"
+                                )
+                            }
                         }
                     }