fix: capitalize the first letter of each word of the home profile name

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

Author: jvsena42

Bitkit/Components/Header.swift

@@ -136,7 +136,7 @@ struct Header: View {
                 profileAvatar
 
                 if let name = pubkyProfile.displayName {
-                    TitleText(name)
+                    TitleText(name.capitalizingFirstLetterOfEachWord)
                 } else {
                     TitleText(t("slashtags__your_name_capital"))
                 }

Bitkit/Extensions/String+Utilities.swift

@@ -20,6 +20,14 @@ extension String {
         return value
     }
 
+    /// Uppercases the first letter of each word and leaves the rest as typed, so "satoshi nakamoto" reads
+    /// "Satoshi Nakamoto" while "McDonald" keeps its inner capital.
+    var capitalizingFirstLetterOfEachWord: String {
+        split(separator: " ", omittingEmptySubsequences: false)
+            .map { word in word.prefix(1).uppercased() + word.dropFirst() }
+            .joined(separator: " ")
+    }
+
     enum EllipsisStyle {
         /// Ellipsis in the middle: "ab...de"
         case middle

BitkitTests/StringUtilitiesTests.swift

@@ -21,4 +21,12 @@ final class StringUtilitiesTests: XCTestCase {
     func testRemovingLightningSchemesTrimsWhitespace() {
         XCTAssertEqual("  lnurlw:lnurl1example  ".removingLightningSchemes(), "lnurl1example")
     }
+
+    func testCapitalizingFirstLetterOfEachWord() {
+        XCTAssertEqual("satoshi nakamoto".capitalizingFirstLetterOfEachWord, "Satoshi Nakamoto")
+        XCTAssertEqual("Satoshi NAKAMOTO".capitalizingFirstLetterOfEachWord, "Satoshi NAKAMOTO")
+        XCTAssertEqual("ronald mcDonald".capitalizingFirstLetterOfEachWord, "Ronald McDonald")
+        XCTAssertEqual("élodie  van".capitalizingFirstLetterOfEachWord, "Élodie  Van")
+        XCTAssertEqual("".capitalizingFirstLetterOfEachWord, "")
+    }
 }