refactor(logging): remove remote logging subsystem

docs/architecture-and-flow-mermaid.md

@@ -37,7 +37,6 @@ flowchart LR
         Events["System event dispatch"]
         MultimodalPolicy["Multimodal session policy"]
         Fortune["Daily fortune policy"]
-        RemoteLog["Remote log service"]
         FactoryCli["Factory CLI diagnostics"]
     end
 
@@ -53,7 +52,7 @@ flowchart LR
         LCD["ST7789 direct LCD backend"]
         Audio["ES8311 audio pipeline"]
         Network["Wi-Fi, BLE provisioning, HTTP, WebSocket"]
-        Storage["NVS, LittleFS, LogFS"]
+        Storage["NVS, LittleFS"]
         GPIO["GPIO, stepper, console UART"]
     end
 
@@ -62,11 +61,9 @@ flowchart LR
     Wire --> Workers
     Connectivity --> RuntimeAdapters
     Workers --> Events
-    Workers --> RemoteLog
     MultimodalPolicy --> RuntimeAdapters
     Fortune --> FortuneDomain
     Events --> ExpressionMap
-    FactoryCli --> RemoteLog
     RuntimeAdapters --> LCD
     RuntimeAdapters --> Audio
     RuntimeAdapters --> Network
@@ -123,7 +120,7 @@ sequenceDiagram
     Domain->>Platform: Wi-Fi and provisioning primitives
 
     App->>CP: control_plane_start_runtime_workers()
-    CP->>CP: start model, websocket wait, LCD, Wi-Fi state, events, keys, remote log, fortune
+    CP->>CP: start model, websocket wait, LCD, Wi-Fi state, events, keys, fortune
 ```
 
 ## Runtime Worker Topology
@@ -139,7 +136,6 @@ flowchart TB
     Start --> WifiTask["cp_wifi_state"]
     Start --> EventTask["cp_system_event"]
     Start --> KeyTask["cp_key_input"]
-    Start --> RemoteLogTask["cp_remote_log"]
     Start --> FortuneTask["cp_fortune\nif FORTUNE_ENABLE"]
 
     KeyTask --> EventTask
@@ -148,7 +144,6 @@ flowchart TB
     Multimodal --> ModelTask
     Multimodal --> Audio["audio capture/playback"]
     WifiTask --> LcdTask
-    RemoteLogTask --> LogServer["remote log server"]
     FortuneTask --> FortuneApi["daily fortune API"]
 ```
 
@@ -259,33 +254,6 @@ sequenceDiagram
     end
 ```
 
-## Remote Logging Flow
-
-```mermaid
-flowchart TD
-    EspLog["ESP_LOGx / printf log"]
-    Hook["esp_log_set_vprintf hook"]
-    Filter["filter by CONFIG_TQ_REMOTE_LOG_MIN_LEVEL"]
-    RamQueue["RAM queue\nCONFIG_TQ_REMOTE_LOG_QUEUE_LEN"]
-    FlushTimer["periodic flush\nCONFIG_TQ_REMOTE_LOG_FLUSH_INTERVAL_MS"]
-    LogFS["/logfs/remote_logs\nLittleFS persistent queue"]
-    StaReady{"STA connected\nand realtime path idle?"}
-    Upload["HTTP POST JSON batch\nCONFIG_TQ_REMOTE_LOG_ENDPOINT"]
-    Server["remote_log_receiver.py\n/opt/logTools/logs"]
-    Backoff["exponential retry backoff"]
-    DropOld["trim old files\nCONFIG_TQ_REMOTE_LOG_MAX_FILES"]
-    CoreDump["detect flash coredump\nupload metadata report"]
-
-    EspLog --> Hook --> Filter --> RamQueue
-    RamQueue --> FlushTimer --> LogFS --> DropOld
-    LogFS --> StaReady
-    CoreDump --> StaReady
-    StaReady -- yes --> Upload --> Server
-    StaReady -- no --> Backoff --> StaReady
-    Upload -- fail --> Backoff
-    Upload -- success --> Delete["delete uploaded local file"]
-```
-
 ## Daily Fortune Flow
 
 ```mermaid
@@ -314,15 +282,8 @@ flowchart LR
     UART["UART0 serial input"]
     CLI["factory CLI parser"]
     Identity["identity / auth commands"]
-    LogStatus["log status"]
-    LogFlush["log flush"]
-    LogClear["log clear"]
-    RemoteLog["control_plane_remote_log_*"]
     UARTOut["UART0 JSON/OK/ERROR output"]
 
     UART --> CLI
     CLI --> Identity --> UARTOut
-    CLI --> LogStatus --> RemoteLog --> UARTOut
-    CLI --> LogFlush --> RemoteLog --> UARTOut
-    CLI --> LogClear --> RemoteLog --> UARTOut
 ```