Wallet receive via health task queue (no separate TLS worker)

- Removed standalone TLS worker task (couldn't allocate 16KB internal stack)
- Added wallet receive queue to mint_health task (already has 16KB stack + working TLS)
- health_task processes wallet tokens between probe intervals (1s poll)
- tls_worker_set_queue() registers queue from mint_health_start()
- Fallback to synchronous receive if queue not available
- Added freertos/queue.h and tollgate_api.h stubs for unit tests
- Added BaseType_t/UBaseType_t/TickType_t/pdFALSE to FreeRTOS stub
- Full payment round-trip confirmed: 2 payments → 41 sat balance

1 files changed, 37 insertions, 0 deletions

diff --git a/tests/unit/stubs/freertos/queue.h b/tests/unit/stubs/freertos/queue.h
new file mode 100644
index 0000000..04aef49
--- /dev/null
+++ b/tests/unit/stubs/freertos/queue.h
@@ -0,0 +1,37 @@
+#ifndef STUB_FREERTOS_QUEUE_H
+#define STUB_FREERTOS_QUEUE_H
+
+#include <stddef.h>
+#include "freertos/FreeRTOS.h"
+
+typedef void *QueueHandle_t;
+
+static inline QueueHandle_t xQueueCreate(UBaseType_t uxQueueLength, UBaseType_t uxItemSize)
+{
+    (void)uxQueueLength;
+    (void)uxItemSize;
+    return (QueueHandle_t)1;
+}
+
+static inline BaseType_t xQueueSend(QueueHandle_t xQueue, const void *pvItemToQueue, TickType_t xTicksToWait)
+{
+    (void)xQueue;
+    (void)pvItemToQueue;
+    (void)xTicksToWait;
+    return pdTRUE;
+}
+
+static inline BaseType_t xQueueReceive(QueueHandle_t xQueue, void *pvBuffer, TickType_t xTicksToWait)
+{
+    (void)xQueue;
+    (void)pvBuffer;
+    (void)xTicksToWait;
+    return pdFALSE;
+}
+
+static inline void vQueueDelete(QueueHandle_t xQueue)
+{
+    (void)xQueue;
+}
+
+#endif