rename: Jarvis -> Jervis target, scheme, and folder throughout

The bundle-ID and display-name renames weren't enough — the actual
Xcode target/product name was still "Jarvis", which drives CFBundleName,
Xcode's Organizer archive list, the .xcodeproj filename, and the scheme
name. Renamed all the way through:

- project.yml: top-level name, target key, PRODUCT_NAME, source/info paths
- Jarvis/ -> Jervis/ (source folder, git-tracked as renames, no content
  diffs on the moved files)
- .gitignore, CI workflows, README, CONTRIBUTING: Jarvis.xcodeproj /
  scheme Jarvis -> Jervis.xcodeproj / scheme Jervis

Verified: xcodebuild -scheme Jervis succeeds, produces Jervis.app,
CFBundleName/CFBundleExecutable/CFBundleDisplayName all read "Jervis".
CFBundleIdentifier intentionally stays com.kisani.jarvis (per prior
decision — bundle ID isn't user-facing anywhere including Organizer).

Swift type names (JarvisApp, JarvisWordmark, etc.) and the Gitea repo
name/URL are unchanged — pure internal source identifiers, not user or
developer-facing product identity.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -1,4 +1,4 @@
-# Jarvis (iOS)
+# Jervis (iOS)
 
 A SwiftUI iOS client for a self-hosted RSS **news-correlation** platform. It shows
 stories ranked by a server-computed **signal score**, caches full articles for offline
@@ -18,7 +18,7 @@ reading, and receives live updates over WebSocket.
   directly.
 
 ```
-Jarvis/
+Jervis/
   Models/        Codable + SwiftData models
   Networking/    APIClient (REST), WebSocketManager
   Store/         StoryStore, ServerSettings
@@ -37,10 +37,10 @@ Jarvis/
 
 ```bash
 brew install xcodegen          # once
-xcodegen generate              # produces Jarvis.xcodeproj
-open Jarvis.xcodeproj          # ⌘R in Xcode, or:
+xcodegen generate              # produces Jervis.xcodeproj
+open Jervis.xcodeproj          # ⌘R in Xcode, or:
 
-xcodebuild -project Jarvis.xcodeproj -scheme Jarvis \
+xcodebuild -project Jervis.xcodeproj -scheme Jervis \
   -sdk iphonesimulator -destination 'platform=iOS Simulator,name=iPhone 17' build
 ```