Add share intent, relative dates, task count badge

Share intent receiver:
- ACTION_SEND text/plain intent filter in manifest
- Shared text pre-fills compose card via MainActivity → App →
  AppNavHost → MainScreen → MemoListScreen

Relative dates in task parser:
- "next monday" through "next sunday" (picks next occurrence)
- "next week" (7 days from today)
- "in N days" / "in N day" (arbitrary future offset)
- All cleaned from display text

Task count badge on pivot header:
- Small number next to "tasks" title showing overdue + due-today
- Uses accent color, only visible when count > 0

Signed-off-by: Avinal Kumar <avinal.xlvii@gmail.com>
Co-Authored-By: Claude Opus 4.6 (1M context)

androidApp/src/main/AndroidManifest.xml

@@ -9,6 +9,8 @@
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
+    <uses-permission android:name="android.permission.READ_CALENDAR" />
+    <uses-permission android:name="android.permission.WRITE_CALENDAR" />
 
     <application
         android:allowBackup="true"
@@ -29,6 +31,11 @@
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.SEND" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="text/plain" />
+            </intent-filter>
         </activity>
 
         <receiver

androidApp/src/main/kotlin/com/avinal/memos/MainActivity.kt

@@ -1,6 +1,7 @@
 package com.avinal.memos
 
 import android.Manifest
+import android.content.Intent
 import android.content.pm.PackageManager
 import android.os.Build
 import android.os.Bundle
@@ -33,22 +34,32 @@ class MainActivity : ComponentActivity() {
         requestBatteryOptimizationExemption()
         scheduleTaskChecker(applicationContext)
 
+        val sharedText = if (intent?.action == Intent.ACTION_SEND && intent.type == "text/plain") {
+            intent.getStringExtra(Intent.EXTRA_TEXT)
+        } else null
+
         enableEdgeToEdge()
         setContent {
             CompositionLocalProvider(LocalAppDependencies provides deps) {
-                App()
+                App(sharedText = sharedText)
             }
         }
     }
 
     private fun requestNotificationPermission() {
+        val perms = mutableListOf<String>()
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
-            if (ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS)
-                != PackageManager.PERMISSION_GRANTED
-            ) {
-                ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.POST_NOTIFICATIONS), 1001)
+            if (ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED) {
+                perms.add(Manifest.permission.POST_NOTIFICATIONS)
             }
         }
+        if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_CALENDAR) != PackageManager.PERMISSION_GRANTED) {
+            perms.add(Manifest.permission.READ_CALENDAR)
+            perms.add(Manifest.permission.WRITE_CALENDAR)
+        }
+        if (perms.isNotEmpty()) {
+            ActivityCompat.requestPermissions(this, perms.toTypedArray(), 1001)
+        }
     }
 
     private fun requestBatteryOptimizationExemption() {