新增: Phase3 EventBus Value载荷+桥接层

- EventBus 载荷改 serde_json::Value(D2 全19变体透传),删 AiBusEvent 强类型子集
- 新增 publish_event(AiChatEvent) helper(内部 to_value→publish,供 emit 双写)
- 新增 remote_bridge.rs 桥接层(MiniCommand→Tauri command 路由+R1 同conv并发兜底)
- agentic/mod.rs 11处 AiBusEvent→AiChatEvent 迁移(Error/Completed/Round)

src-tauri/src/commands/ai/agentic/mod.rs

@@ -39,8 +39,6 @@ use df_storage::models::AiProviderRecord;
 
 use crate::state::{AppState, LlmConcurrency};
 
-use crate::commands::ai::event_bus::AiBusEvent;
-
 use super::audit::process_tool_calls;
 use super::compress::compress_via_llm;
 use super::conversation::{save_conversation, TokenAccumulator};
@@ -523,8 +521,9 @@ pub(crate) async fn run_agentic_loop(
             });
             // L3 emit 双写(2026-06-22):关键 AiError publish 到事件总线,供跨模块订阅。
             // EVENT_BUS_ENABLED 门控在 publish 内部(false 静默丢弃),无消费者时空转不报错。
-            let _ = app_handle.state::<AppState>().ai_event_bus.publish(AiBusEvent::Error {
+            let _ = app_handle.state::<AppState>().ai_event_bus.publish_event(AiChatEvent::AiError {
                 error: msg,
+                error_type: None,
                 conversation_id: Some(conv_id.clone()),
             });
             return;
@@ -541,8 +540,9 @@ pub(crate) async fn run_agentic_loop(
                 conversation_id: Some(conv_id.clone()),
             });
             // L3 emit 双写:超时 AiError publish 到事件总线(同上,门控在 publish 内)。
-            let _ = app_handle.state::<AppState>().ai_event_bus.publish(AiBusEvent::Error {
+            let _ = app_handle.state::<AppState>().ai_event_bus.publish_event(AiChatEvent::AiError {
                 error: err_msg,
+                error_type: None,
                 conversation_id: Some(conv_id.clone()),
             });
             return;
@@ -713,10 +713,11 @@ pub(crate) async fn run_agentic_loop(
             // generating 复位后再 emit Completed：保证前端收事件时后端已可接下一条(发送队列续发不被"正在生成中"拒绝)
             let _ = app_handle.emit("ai-chat-event", AiChatEvent::AiCompleted { total_tokens: usage.total_tokens, prompt_tokens: tokens.prompt(), completion_tokens: tokens.completion(), incomplete: None, conversation_id: Some(conv_id.clone()) });
             // L3 emit 双写:入口 stop 的 AiCompleted publish 到事件总线(EVENT_BUS_ENABLED 门控在 publish 内)。
-            let _ = app_handle.state::<AppState>().ai_event_bus.publish(AiBusEvent::Completed {
+            let _ = app_handle.state::<AppState>().ai_event_bus.publish_event(AiChatEvent::AiCompleted {
                 total_tokens: usage.total_tokens,
                 prompt_tokens: tokens.prompt(),
                 completion_tokens: tokens.completion(),
+                incomplete: None,
                 conversation_id: Some(conv_id.clone()),
             });
             return;
@@ -806,7 +807,7 @@ pub(crate) async fn run_agentic_loop(
                 conversation_id: Some(conv_id.clone()),
             });
             // L3 emit 双写:AiAgentRound publish 到事件总线(EVENT_BUS_ENABLED 门控在 publish 内)。
-            let _ = app_handle.state::<AppState>().ai_event_bus.publish(AiBusEvent::Round {
+            let _ = app_handle.state::<AppState>().ai_event_bus.publish_event(AiChatEvent::AiAgentRound {
                 round: round_n,
                 conversation_id: Some(conv_id.clone()),
             });
@@ -1174,8 +1175,9 @@ pub(crate) async fn run_agentic_loop(
                             conversation_id: Some(conv_id.clone()),
                         });
                         // L3 emit 双写:Fatal AiError publish 到事件总线(门控在 publish 内)。
-                        let _ = app_handle.state::<AppState>().ai_event_bus.publish(AiBusEvent::Error {
+                        let _ = app_handle.state::<AppState>().ai_event_bus.publish_event(AiChatEvent::AiError {
                             error,
+                            error_type: None,
                             conversation_id: Some(conv_id.clone()),
                         });
                         return;
@@ -1203,8 +1205,9 @@ pub(crate) async fn run_agentic_loop(
                         conversation_id: Some(conv_id.clone()),
                     });
                     // L3 emit 双写:全 candidate 耗尽 AiError publish 到事件总线(门控在 publish 内)。
-                    let _ = app_handle.state::<AppState>().ai_event_bus.publish(AiBusEvent::Error {
+                    let _ = app_handle.state::<AppState>().ai_event_bus.publish_event(AiChatEvent::AiError {
                         error: err_msg,
+                        error_type: None,
                         conversation_id: Some(conv_id.clone()),
                     });
                     return;
@@ -1262,10 +1265,11 @@ pub(crate) async fn run_agentic_loop(
                 incomplete: Some(true),
             });
             // L3 emit 双写:MidStream 保文 AiCompleted publish 到事件总线(门控在 publish 内)。
-            let _ = app_handle.state::<AppState>().ai_event_bus.publish(AiBusEvent::Completed {
+            let _ = app_handle.state::<AppState>().ai_event_bus.publish_event(AiChatEvent::AiCompleted {
                 total_tokens: usage.total_tokens,
                 prompt_tokens: tokens.prompt(),
                 completion_tokens: tokens.completion(),
+                incomplete: None,
                 conversation_id: Some(conv_id.clone()),
             });
             return;
@@ -1329,10 +1333,11 @@ pub(crate) async fn run_agentic_loop(
             // generating 复位后再 emit Completed：保证前端收事件时后端已可接下一条(发送队列续发不被"正在生成中"拒绝)
             let _ = app_handle.emit("ai-chat-event", AiChatEvent::AiCompleted { total_tokens: usage.total_tokens, prompt_tokens: tokens.prompt(), completion_tokens: tokens.completion(), incomplete: None, conversation_id: Some(conv_id.clone()) });
             // L3 emit 双写:stream 后 stop 的 AiCompleted publish 到事件总线(门控在 publish 内)。
-            let _ = app_handle.state::<AppState>().ai_event_bus.publish(AiBusEvent::Completed {
+            let _ = app_handle.state::<AppState>().ai_event_bus.publish_event(AiChatEvent::AiCompleted {
                 total_tokens: usage.total_tokens,
                 prompt_tokens: tokens.prompt(),
                 completion_tokens: tokens.completion(),
+                incomplete: None,
                 conversation_id: Some(conv_id.clone()),
             });
             return;
@@ -1524,10 +1529,11 @@ pub(crate) async fn run_agentic_loop(
     let _ = app_handle.emit("ai-chat-event", AiChatEvent::AiCompleted { total_tokens: usage_total, prompt_tokens: tokens.prompt(), completion_tokens: tokens.completion(), incomplete: None, conversation_id: Some(conv_id.clone()) });
     // L3 emit 双写:正常完成 AiCompleted publish 到事件总线(EVENT_BUS_ENABLED 门控在 publish 内,
     // 无消费者空转留批3 真实消费者接入)。AiTextDelta/AiToolCall* 高频事件不双写(无消费者空转)。
-    let _ = app_handle.state::<AppState>().ai_event_bus.publish(AiBusEvent::Completed {
+    let _ = app_handle.state::<AppState>().ai_event_bus.publish_event(AiChatEvent::AiCompleted {
         total_tokens: usage_total,
         prompt_tokens: tokens.prompt(),
         completion_tokens: tokens.completion(),
+        incomplete: None,
         conversation_id: Some(conv_id.clone()),
     });
 }
@@ -1654,8 +1660,9 @@ pub(crate) async fn try_continue_agent_loop(
                 conversation_id: Some(conv_id.to_string()),
             });
             // L3 emit 双写:try_continue provider-Err AiError publish 到事件总线(门控在 publish 内)。
-            let _ = app.state::<AppState>().ai_event_bus.publish(AiBusEvent::Error {
+            let _ = app.state::<AppState>().ai_event_bus.publish_event(AiChatEvent::AiError {
                 error: e,
+                error_type: None,
                 conversation_id: Some(conv_id.to_string()),
             });
             return;
@@ -1723,7 +1730,7 @@ pub(crate) async fn try_continue_agent_loop(
         conversation_id: Some(conv_id_owned.clone()),
     });
     // L3 emit 双写:try_continue 续跑 AiAgentRound publish 到事件总线(门控在 publish 内)。
-    let _ = app.state::<AppState>().ai_event_bus.publish(AiBusEvent::Round {
+    let _ = app.state::<AppState>().ai_event_bus.publish_event(AiChatEvent::AiAgentRound {
         round: 0,
         conversation_id: Some(conv_id_owned.clone()),
     });