app-module events & callstack config, crash diagnostics (#630)

- Apps can specify task stack depth and preferred memory placement in their manifests.
- App identifiers are validated against length and character requirements.
- Crash diagnostics now show the crash cause, reason, fault address, call stack, and program-counter details, with logs saved for review.
- App closing is more consistent across built-in screens. There's now a dedicated function, and the old _emit() function is made private.
- Crash diagnostics no longer display a QR code without a call stack.
- Improved memory allocation for unrestricted requests.

TactilityKernel/include/tactility/concurrent/thread.h

@@ -50,7 +50,7 @@ Thread* thread_alloc(void);
 /**
  * @brief Creates a new thread instance with specified parameters.
  * @param[in] name The name of the thread.
- * @param[in] stack_size The size of the thread stack in bytes.
+ * @param[in] stack_size The size of the task stack in bytes.
  * @param[in] function The main function to be executed by the thread.
  * @param[in] function_context A pointer to the context to be passed to the main function.
  * @param[in] affinity The CPU core affinity for the thread (e.g., tskNO_AFFINITY).
@@ -58,7 +58,7 @@ Thread* thread_alloc(void);
  */
 Thread* thread_alloc_full(
     const char* name,
-    configSTACK_DEPTH_TYPE stack_size,
+    size_t stack_size,
     thread_main_fn_t function,
     void* function_context,
     portBASE_TYPE affinity
@@ -82,7 +82,7 @@ void thread_set_name(Thread* thread, const char* name);
 /**
  * @brief Sets the stack size for the thread.
  * @param[in] thread The thread instance.
- * @param[in] stack_size The stack size in bytes. Must be a multiple of 4.
+ * @param[in] stack_size The stack size in bytes, must be a multiple of StackType_t, which varies per platform.
  * @note Can only be called when the thread is in the STOPPED state.
  */
 void thread_set_stack_size(Thread* thread, size_t stack_size);