fix(v13): FIX-06 PersistentMemoryStore 全量移除 — 665行死代码清理

- persistent.rs 611→57行: 移除 PersistentMemoryStore struct + 全部方法 + 死 embedding global
- memory_commands.rs: MemoryStoreState→Arc<Mutex<()>>, memory_init→no-op, 移除 2 @reserved 命令
- viking_commands.rs: 移除冗余 PersistentMemoryStore embedding 配置段
- lib.rs: Tauri 命令 191→189 (移除 memory_configure_embedding + memory_is_embedding_configured)
- TRUTH.md + wiki/log.md 数字同步

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

desktop/src-tauri/src/lib.rs

@@ -124,8 +124,8 @@ pub fn run() {
     // Initialize browser state
     let browser_state = browser::commands::BrowserState::new();
 
-    // Initialize memory store state
-    let memory_state: memory_commands::MemoryStoreState = std::sync::Arc::new(tokio::sync::Mutex::new(None));
+    // Initialize memory store state (vestigial — PersistentMemoryStore removed in V13)
+    let memory_state: memory_commands::MemoryStoreState = std::sync::Arc::new(tokio::sync::Mutex::new(()));
 
     // Initialize intelligence layer state
     let heartbeat_state: intelligence::HeartbeatEngineState = std::sync::Arc::new(tokio::sync::Mutex::new(std::collections::HashMap::new()));
@@ -373,8 +373,6 @@ pub fn run() {
             memory_commands::memory_export,
             memory_commands::memory_import,
             memory_commands::memory_db_path,
-            memory_commands::memory_configure_embedding,
-            memory_commands::memory_is_embedding_configured,
             memory_commands::memory_build_context,
             // Intelligence Layer commands (Phase 2-3)
             // Heartbeat Engine