feat(keyboard): ship AI hint carousel, home library cards, and clipboard polish

Rotate AI idle suggestions with optional remote packs, move history/dictionary onto self-sizing Home preview cards, harden clipboard capture/prompting, and simplify keyboard chrome by dropping most liquid-glass shadows.

Tests/suite-manifest.json

@@ -16,11 +16,12 @@
         "OSGKeyboardTests/AppGroupConfigurationTests",
         "OSGKeyboardTests/AppGroupOnboardingStoreTests",
         "OSGKeyboardTests/ConfigurationStoreTests",
-        "OSGKeyboardTests/KeychainTests"
+        "OSGKeyboardTests/KeychainTests",
+        "OSGKeyboardTests/ProviderToolRequestCoordinatorTests"
       ]
     },
     "sync": {
-      "description": "iCloud KVS merge/sync for settings, dictionary, speech history, usage stats",
+      "description": "iCloud KVS merge/sync for settings, local-only clipboard consent, dictionary, speech history, usage stats",
       "platform": "ios",
       "tests": [
         "OSGKeyboardTests/SettingsCloudSyncTests",
@@ -28,7 +29,8 @@
         "OSGKeyboardTests/PersonalDictionaryMergeTests",
         "OSGKeyboardTests/SpeechHistoryCloudSyncTests",
         "OSGKeyboardTests/SpeechHistoryDayDeletionTests",
-        "OSGKeyboardTests/UsageStatisticsCloudSyncTests"
+        "OSGKeyboardTests/UsageStatisticsCloudSyncTests",
+        "OSGKeyboardTests/AIHistoryAndUsageTests"
       ]
     },
     "polish": {
@@ -40,7 +42,10 @@
         "OSGKeyboardTests/PolishOutputValidatorTests",
         "OSGKeyboardTests/PolishStylePackTests",
         "OSGKeyboardTests/LLMClientTests",
-        "OSGKeyboardTests/TranscriptLanguageDetectorTests"
+        "OSGKeyboardTests/TranscriptLanguageDetectorTests",
+        "OSGKeyboardTests/AIModeLLMClientTests",
+        "OSGKeyboardTests/AIQuestionServiceTests",
+        "OSGKeyboardTests/AIClipboardPromptTests"
       ]
     },
     "edit_last_input": {
@@ -52,7 +57,8 @@
         "OSGKeyboardTests/FlowStartTransactionPolicyTests",
         "OSGKeyboardTests/SpeechHistoryRevisionTests",
         "OSGKeyboardTests/EditTransactionStoreTests",
-        "OSGKeyboardTests/RecordButtonGesturePolicyTests"
+        "OSGKeyboardTests/RecordButtonGesturePolicyTests",
+        "OSGKeyboardExtTests/EditHintSchedulerTests"
       ]
     },
     "cloud_asr": {
@@ -88,6 +94,7 @@
         "OSGKeyboardTests/UtteranceTranscriptGuardTests",
         "OSGKeyboardTests/UtteranceBatchFallbackPolicyTests",
         "OSGKeyboardTests/ProgressiveDictationTranscriptAccumulatorTests",
+        "OSGKeyboardTests/FlowASRPostProcessorTests",
         "OSGKeyboardExtTests/FinalChunkRecoveryTests"
       ]
     },
@@ -104,15 +111,17 @@
         "OSGKeyboardTests/FlowUtterancePCMStoreTests",
         "OSGKeyboardTests/MicVoiceAvailabilityTests",
         "OSGKeyboardTests/FlowKeyboardPoliciesTests",
-        "OSGKeyboardTests/FlowReliabilityTests"
+        "OSGKeyboardTests/FlowReliabilityTests",
+        "OSGKeyboardTests/AISessionStateTests"
       ]
     },
     "keyboard": {
-      "description": "Typing surface, English lexicon, Rime schema/integration, candidate panel, cursor navigation, translation chip grace",
+      "description": "Typing surface, clipboard privacy/storage policy, secure-field UI, English lexicon, Rime, cursor navigation",
       "platform": "ios",
       "tests": [
         "OSGKeyboardExtTests/EnglishTypingTests",
         "OSGKeyboardExtTests/CandidatePanelExpandTests",
+        "OSGKeyboardExtTests/ClipboardSuggestionLifecycleTests",
         "OSGKeyboardExtTests/KeyboardStateTests",
         "OSGKeyboardExtTests/KeyboardSurfaceStateTests",
         "OSGKeyboardExtTests/KeyHitTestingTests",
@@ -121,7 +130,10 @@
         "OSGKeyboardExtTests/RimeSchemaGeneratorTests",
         "OSGKeyboardExtTests/RimePersonalDictionaryExporterTests",
         "OSGKeyboardTests/CursorNavigationTests",
-        "OSGKeyboardTests/KeyboardTranslationConfigProtectionTests"
+        "OSGKeyboardTests/KeyboardTranslationConfigProtectionTests",
+        "OSGKeyboardTests/AIHintPoolTests",
+        "OSGKeyboardTests/ClipboardHistoryPolicyTests",
+        "OSGKeyboardTests/ClipboardHistoryStoreTests"
       ]
     },
     "host_misc": {
@@ -146,7 +158,8 @@
       "tests": [
         "OSGKeyboardMacTests/MacAudioRecorderSnapshotStreamTests",
         "OSGKeyboardMacTests/MacDictationViewModelTests",
-        "OSGKeyboardMacTests/MacTextInsertionServiceTests"
+        "OSGKeyboardMacTests/MacTextInsertionServiceTests",
+        "OSGKeyboardMacTests/ProviderToolRequestCoordinatorTests"
       ]
     },
     "live_api": {