fix: 全面审计修复 — P0 功能缺陷 + P1 代码质量

P0 功能修复:
- stats: Admin V2 仪表盘 API 路径修正 (/stats/dashboard → /admin/dashboard)
- mcp: 桌面端 MCP 插件增加 isTauriRuntime() 守卫，避免浏览器模式崩溃
- admin: 侧边栏高亮逻辑修复 (startsWith → 精确匹配+子路径)

P1 代码质量:
- 删除 workflowBuilderStore.ts 死代码 (456行，零引用)
- sqlite.rs 3 处 SQL 静默失败改为 tracing::warn! 日志
- mcp_tool_adapter 2 处 unwrap 改为安全回退
- orchestration_execute 添加 @reserved 标注
- TRUTH.md 测试数字校准 (734→803)，Store 数 26→25

crates/zclaw-growth/src/storage/sqlite.rs

@@ -218,11 +218,14 @@ impl SqliteStorage {
                     let mut hasher = std::collections::hash_map::DefaultHasher::new();
                     normalized.hash(&mut hasher);
                     let hash = format!("{:016x}", hasher.finish());
-                    let _ = sqlx::query("UPDATE memories SET content_hash = ? WHERE uri = ?")
+                    if let Err(e) = sqlx::query("UPDATE memories SET content_hash = ? WHERE uri = ?")
                         .bind(&hash)
                         .bind(uri)
                         .execute(&self.pool)
-                        .await;
+                        .await
+                    {
+                        tracing::warn!("[sqlite] content_hash update failed for {}: {}", uri, e);
+                    }
                 }
                 tracing::info!(
                     "[SqliteStorage] Backfilled content_hash for {} existing entries",
@@ -256,9 +259,12 @@ impl SqliteStorage {
         if needs_rebuild {
             tracing::info!("[SqliteStorage] Rebuilding FTS5 table: unicode61 → trigram for CJK support");
             // Drop old FTS5 table
-            let _ = sqlx::query("DROP TABLE IF EXISTS memories_fts")
+            if let Err(e) = sqlx::query("DROP TABLE IF EXISTS memories_fts")
                 .execute(&self.pool)
-                .await;
+                .await
+            {
+                tracing::warn!("[sqlite] FTS5 table drop failed during rebuild: {}", e);
+            }
             // Recreate with trigram tokenizer
             sqlx::query(
                 r#"
@@ -423,14 +429,17 @@ impl SqliteStorage {
         .await;
 
         // Also clean up FTS entries for archived memories
-        let _ = sqlx::query(
+        if let Err(e) = sqlx::query(
             r#"
             DELETE FROM memories_fts
             WHERE uri NOT IN (SELECT uri FROM memories)
             "#,
         )
         .execute(&self.pool)
-        .await;
+        .await
+        {
+            tracing::warn!("[sqlite] FTS cleanup after archive failed: {}", e);
+        }
 
         let archived = archive_result
             .map(|r| r.rows_affected())

crates/zclaw-protocols/src/mcp_tool_adapter.rs

@@ -130,7 +130,7 @@ impl McpToolAdapter {
 
         match result.len() {
             0 => Ok(Value::Null),
-            1 => Ok(result.into_iter().next().unwrap()),
+            1 => Ok(result.into_iter().next().unwrap_or(Value::Null)),
             _ => Ok(Value::Array(result)),
         }
     }
@@ -160,7 +160,7 @@ impl McpServiceManager {
         let adapters = McpToolAdapter::from_server(name.clone(), client.clone()).await?;
         self.clients.insert(name.clone(), client);
         self.adapters.insert(name.clone(), adapters);
-        Ok(self.adapters.get(&name).unwrap().iter().collect())
+        Ok(self.adapters.get(&name).map(|v| v.iter().collect()).unwrap_or_default())
     }
 
     /// Get all registered tool adapters from all services