refactor(log): 统一日志系统并添加链接器实现

- 为所有模块添加统一的 scc_*_log.h 日志头文件，删除旧的 lexer_log.h/c
- 将运行时日志从 scc_utils 迁移到 scc_core 目录，统一日志管理
- 在解析器表达式/语句/类型解析中添加 LOG_TRACE 调试日志
- 实现 SCCF 链接器 (sccf_linker) 支持多目标文件链接
- 重构 CLI 主程序 (main.c/config.c)，新增 cmd_log.h 调试支持
- 优化 x86 指令编码操作数对齐检查
- 修复预处理器的指令处理和宏展开逻辑

runtime/scc_core/src/scc_log.c

@@ -0,0 +1,54 @@
+#include <scc_log.h>
+
+int scc_log_handler(logger_t *module, log_level_t level, const char *file,
+                    int line, int col, const char *fmt, ...) {
+    /* clang-format off */
+    const char *level_str = nullptr;
+    switch (level) {
+    case LOG_LEVEL_DEBUG: level_str = "debug"; break;
+    case LOG_LEVEL_INFO:  level_str = "info "; break;
+    case LOG_LEVEL_WARN:  level_str = "warn "; break;
+    case LOG_LEVEL_ERROR: level_str = "error"; break;
+    case LOG_LEVEL_FATAL: level_str = "fatal"; break;
+    case LOG_LEVEL_TRACE: level_str = "trace"; break;
+    default:              level_str = "notset"; break;
+    }
+    /// @note: 定义 __LOG_NO_COLOR__ 会取消颜色输出
+    #ifndef __LOG_NO_COLOR__
+    const char *color_code;
+    switch (level) {
+        case LOG_LEVEL_DEBUG: color_code = ANSI_FG_CYAN; break;
+        case LOG_LEVEL_INFO:  color_code = ANSI_FG_GREEN; break;
+        case LOG_LEVEL_TRACE: color_code = ANSI_FG_BLUE; break;
+        case LOG_LEVEL_WARN:  color_code = ANSI_FG_YELLOW; break;
+        case LOG_LEVEL_ERROR: color_code = ANSI_FG_RED; break;
+        case LOG_LEVEL_FATAL: color_code = ANSI_FG_RED ANSI_UNDERLINED; break;
+        default: color_code = ANSI_NONE;
+    }
+    #endif
+    /* clang-format on */
+    char buf[LOGGER_MAX_BUF_SIZE];
+
+    int offset =
+        scc_snprintf(module->buf, sizeof(module->buf), "%s[%s] %s - %s:%d:%d%s",
+                     color_code ? color_code : "", level_str, module->name,
+                     file, line, col, color_code ? ANSI_NONE : "");
+
+    va_list args;
+    va_start(args, fmt);
+    scc_vsnprintf(module->buf + offset, sizeof(module->buf) - offset, fmt,
+                  args);
+    va_end(args);
+
+    log_puts(buf);
+    if (level == LOG_LEVEL_FATAL) {
+        log_abort();
+    }
+    return 0;
+}
+
+logger_t __scc_pos_log = {
+    .name = "pos_log",
+    .user_handler = scc_log_handler,
+    .level = LOG_LEVEL_ALL,
+};