docs: Update comprehensive documentation with AI features, health checks, and architecture improvements

- Document automatic token verification on startup and note:// prefix for Markdown notes
- Add extensive AI capabilities section (Gemini integration, auto-tagging, content classification, multi-model fallback)
- Document link health monitoring system with dead link detection and exclusion features
- Add file sharing support (Markdown/text files) and deep links documentation
- Update technology

benchmark/src/main/AndroidManifest.xml

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+</manifest>

benchmark/src/main/java/com/shaarit/benchmark/BaselineProfileGenerator.kt

@@ -0,0 +1,54 @@
+package com.shaarit.benchmark
+
+import androidx.benchmark.macro.junit4.BaselineProfileRule
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.LargeTest
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Generates Baseline Profiles for ShaarIt.
+ * 
+ * Baseline Profiles pre-compile critical user journeys (cold start, navigation, scroll)
+ * using AOT compilation, avoiding JIT compilation at runtime.
+ * 
+ * Typical gain: 30-50% reduction in cold start time for Compose apps.
+ * 
+ * To generate the profile, run:
+ *   ./gradlew :benchmark:pixel6Api31BenchmarkAndroidTest -Pandroid.testInstrumentationRunnerArguments.androidx.benchmark.enabledRules=BaselineProfile
+ * 
+ * Then copy the generated baseline-prof.txt to app/src/main/baseline-prof.txt
+ */
+@RunWith(AndroidJUnit4::class)
+@LargeTest
+class BaselineProfileGenerator {
+
+    @get:Rule
+    val rule = BaselineProfileRule()
+
+    @Test
+    fun generateProfile() {
+        rule.collect(
+            packageName = "com.shaarit",
+            includeInStartupProfile = true
+        ) {
+            // Cold start — launch the main activity
+            startActivityAndWait()
+
+            // Wait for the feed to load
+            device.waitForIdle()
+
+            // Scroll the feed to capture scroll-related code paths
+            val feedList = device.findObject(
+                androidx.test.uiautomator.By.scrollable(true)
+            )
+            feedList?.let {
+                it.scroll(androidx.test.uiautomator.Direction.DOWN, 2.0f)
+                device.waitForIdle()
+                it.scroll(androidx.test.uiautomator.Direction.UP, 2.0f)
+                device.waitForIdle()
+            }
+        }
+    }
+}