Rename app from oAI to Confab

"oAI" reads as easily confused with OpenAI, both visually and in
casual conversation. Renamed to "Confab" throughout: Xcode
target/scheme/bundle ID (com.oai.Confab), Info.plist and Help Book
identity, all user-facing UI text, internal Log subsystem and color
identifiers, localization catalogs (6 languages, including a proper
reworded/retranslated Intel-deprecation notice), Help Book HTML
content, and docs (README/DEVELOPMENT/PRIVACY/SECURITY).

Deliberately cosmetic-only: the on-disk data folder
(~/Library/Application Support/oAI/), database/backup filenames,
Keychain service identifiers, and EncryptionService's key-derivation
inputs are all left untouched so existing conversations, settings,
and stored API keys survive the update with zero migration and no
re-entering credentials. Verified live: a real signed build
successfully decrypted a stored API key and loaded an existing
conversation database after the bundle ID change.

Also includes a small already-completed, previously uncommitted
model-release-date feature (ModelInfo/OpenRouterModels/
OpenRouterProvider/ModelInfoView) that happened to share several
files with this rename.

Gitignored on this branch and updated on disk but not part of this
commit: CLAUDE.md, RELEASE_NOTES.md, and the build*.sh scripts.

oAI/Utilities/Extensions/View+Extensions.swift

@@ -1,17 +1,17 @@
 //
 //  View+Extensions.swift
-//  oAI
+//  Confab
 //
 //  SwiftUI view helpers and modifiers
 //
 // SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
 // Copyright (C) 2026 Rune Olsen
 //
-// This file is part of oAI.
+// This file is part of Confab.
 //
-// oAI is licensed under the PolyForm Noncommercial License 1.0.0.
+// Confab is licensed under the PolyForm Noncommercial License 1.0.0.
 // You may use, study, modify, and share it for any noncommercial
-// purpose. Commercial use — including selling oAI or any part of
+// purpose. Commercial use — including selling Confab or any part of
 // it, standalone or bundled into another product or service —
 // requires a separate commercial license from the copyright holder.
 //
@@ -57,33 +57,33 @@ extension View {
     
     // MARK: - Common Styling
     
-    func oaiCardStyle() -> some View {
+    func confabCardStyle() -> some View {
         self
-            .background(Color.oaiSurface)
+            .background(Color.confabSurface)
             .cornerRadius(8)
             .overlay(
                 RoundedRectangle(cornerRadius: 8)
-                    .stroke(Color.oaiBorder, lineWidth: 1)
+                    .stroke(Color.confabBorder, lineWidth: 1)
             )
     }
     
-    func oaiButton() -> some View {
+    func confabButton() -> some View {
         self
             .padding(.horizontal, 12)
             .padding(.vertical, 6)
-            .background(Color.oaiSurface)
-            .foregroundColor(.oaiPrimary)
+            .background(Color.confabSurface)
+            .foregroundColor(.confabPrimary)
             .cornerRadius(6)
     }
     
-    func oaiTextField() -> some View {
+    func confabTextField() -> some View {
         self
             .padding(8)
-            .background(Color.oaiBackground)
+            .background(Color.confabBackground)
             .cornerRadius(6)
             .overlay(
                 RoundedRectangle(cornerRadius: 6)
-                    .stroke(Color.oaiBorder, lineWidth: 1)
+                    .stroke(Color.confabBorder, lineWidth: 1)
             )
     }
 }