Add full automotive RTOS project

Add kernel (Cortex-M0/M3/M4, Tricore, S32K, RISC-V ports), drivers,
middleware (CAN stack, diagnostics, safety), applications, board
support, build/test tooling, and documentation.

.gitea/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,47 @@
+---
+name: Bug Report
+about: Create a report to help us improve
+title: '[BUG] '
+labels: bug
+assignees: ''
+---
+
+## Bug Description
+
+<!-- A clear and concise description of what the bug is -->
+
+## Environment
+
+<!-- Please complete the following information -->
+
+- **OS**: <!-- e.g., Ubuntu 20.04, macOS 12.0, Windows 10 -->
+- **Target Board**: <!-- e.g., STM32F407 Discovery, NXP S32K144 EVB -->
+- **MCU**: <!-- e.g., STM32F407VG, S32K144 -->
+- **Compiler**: <!-- e.g., arm-none-eabi-gcc 10.3.1 -->
+- **Build Type**: <!-- Debug, Release -->
+- **RTOS Version**: <!-- e.g., 1.0.0 -->
+- **Commit SHA**: <!-- e.g., abc123def456 -->
+
+## Steps to Reproduce
+
+<!-- Detailed steps to reproduce the bug -->
+
+1.
+2.
+3.
+4.
+
+## Expected Behavior
+
+<!-- What should happen -->
+
+## Actual Behavior
+
+<!-- What actually happens -->
+
+## Code Example
+
+<!-- If applicable, provide a minimal code example -->
+
+```c
+// Your code here