chore(release): bump version to 2.1.6 (build 131)

Version: CURRENT_PROJECT_VERSION 130 -> 131 (project.yml, AGENTS.md, READMEs,
docs/llms.txt).

fix(flow): host-app identification now compiles in every build configuration
(Debug, TestFlight, Release). The arbiter probe and HostAppIdentity were
DEBUG-only, so TestFlight/App Store builds never knew the host bundle id and
could not auto-return after a startflow handoff. Debug-only logging and the
Home test card are unchanged.

Also includes the pending work in the tree:
- Home: single account/setup card surface (HomeAccountSurfacePolicy/Views)
- Wide screens: voice key row and centred mic placement, iPhone Duo layout
- Keyboard: clipboard skill ranking and AI skill layout updates
- Debug: account session handoff to the Simulator (+ import script)
- Docs: portfolio assets, privacy policy URL, site/README refresh

OSGKeyboardTests/FlowHomePiPStatusPolicyTests.swift

@@ -82,40 +82,6 @@ final class FlowHomePiPStatusPolicyTests: XCTestCase {
         )
     }
 
-    func testConnectionCardDisappearsWhenSessionIsHealthy() {
-        XCTAssertFalse(
-            shouldShowConnectionCard(
-                lifecycle: .active,
-                isHostReady: true
-            )
-        )
-    }
-
-    func testConnectionCardRemainsVisibleWhilePreparingOrFailed() {
-        XCTAssertTrue(
-            shouldShowConnectionCard(
-                lifecycle: .preparing(attempt: 1, total: 3),
-                isHostReady: false
-            )
-        )
-        XCTAssertTrue(
-            shouldShowConnectionCard(
-                lifecycle: .failed(.timedOut),
-                isHostReady: false
-            )
-        )
-    }
-
-    func testNormalRecordingDoesNotBringConnectionCardBack() {
-        XCTAssertFalse(
-            shouldShowConnectionCard(
-                lifecycle: .active,
-                isRecording: true,
-                isHostReady: false
-            )
-        )
-    }
-
     func testLocalAndPolishOnlySetupLinksToTextPolish() {
         XCTAssertEqual(
             HomeServiceSetupPolicy.apiKeyDeepLink(
@@ -131,13 +97,6 @@ final class FlowHomePiPStatusPolicyTests: XCTestCase {
             ),
             .textPolish
         )
-        XCTAssertEqual(
-            HomeServiceSetupPolicy.apiKeyMessageKey(
-                isLocalEngine: false,
-                isASRConfigured: true
-            ),
-            "home.setup.polishKeyMissing"
-        )
     }
 
     func testCloudSetupLinksToSpeechRecognitionWhenASRIsMissing() {
@@ -148,13 +107,6 @@ final class FlowHomePiPStatusPolicyTests: XCTestCase {
             ),
             .speechRecognition
         )
-        XCTAssertEqual(
-            HomeServiceSetupPolicy.apiKeyMessageKey(
-                isLocalEngine: false,
-                isASRConfigured: false
-            ),
-            "home.setup.cloudIncomplete"
-        )
     }
 
     private func descriptor(
@@ -169,20 +121,4 @@ final class FlowHomePiPStatusPolicyTests: XCTestCase {
             isHostReady: false
         )
     }
-
-    private func shouldShowConnectionCard(
-        lifecycle: FlowPiPLifecycleState,
-        isRecording: Bool = false,
-        isHostReady: Bool
-    ) -> Bool {
-        FlowHomePiPStatusPolicy.shouldShowConnectionCard(
-            lifecycle: lifecycle,
-            needsPermissionSetup: false,
-            needsAPIKeySetup: false,
-            hasSessionWarning: false,
-            isRecording: isRecording,
-            isProcessing: false,
-            isHostReady: isHostReady
-        )
-    }
 }