Implement posix app loading (#643)

- Added POSIX desktop support for SDK builds, application packaging, and integration testing.
- Added POSIX filesystem partitions and improved application path handling.
- Added simulator support for loading and running applications dynamically.
- Improved simulator task stack handling and display startup reliability.
- Improved simulator display scaling, resizing, high-DPI support, and pointer accuracy.
- Fixed LVGL timers and input polling on POSIX. (fixes simulator with Linux on some Intel graphics platforms)
- Standardized data paths across platforms.
- Logging now works via separate task: this allows apps to write to log without it affecting their stdout (for apps that output text as relevant date for other apps, like the File Selection app)
- Fixes for app stdio

Buildscripts/release-sdk-current.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 
 import os
+import platform
 import shutil
 import subprocess
 import sys
@@ -17,42 +18,53 @@ def get_idf_target():
         return None
     return None
 
-def main():
-    # 1. Get idf_target
-    idf_target = get_idf_target()
-    if not idf_target:
-        print("Could not determine IDF target from sdkconfig")
-        sys.exit(1)
-
-    # 2. Get version
+def get_version():
     try:
         with open("version.txt", "r") as f:
-            version = f.read().strip()
+            return f.read().strip()
     except FileNotFoundError:
         print("version.txt not found")
         sys.exit(1)
 
-    # 3. Construct sdk_path
-    # release/TactilitySDK/${version}-${idf_target}/TactilitySDK
-    sdk_path = os.path.join("release", "TactilitySDK", f"{version}-{idf_target}", "TactilitySDK")
-    
-    # 4. Cleanup sdk_path
+def run_release_script(script_name, sdk_path):
+    # Cleanup sdk_path
     if os.path.exists(sdk_path):
         print(f"Cleaning up {sdk_path}")
         shutil.rmtree(sdk_path)
-    
+
     os.makedirs(sdk_path, exist_ok=True)
 
-    # 5. Call release-sdk.py
     # Note: Using sys.executable to ensure we use the same python interpreter
-    script_path = os.path.join("Buildscripts", "release-sdk.py")
+    script_path = os.path.join("Buildscripts", script_name)
     print(f"Running {script_path} {sdk_path}")
-    
+
     result = subprocess.run([sys.executable, script_path, sdk_path])
-    
+
     if result.returncode != 0:
         print(f"Error: {script_path} failed with return code {result.returncode}")
         sys.exit(result.returncode)
 
+def main():
+    version = get_version()
+
+    # ESP_IDF_VERSION is only set once an ESP-IDF environment has been activated (export.sh /
+    # the Windows PowerShell profile - see building.md); same check release-sdk-esp32.py and
+    # release-sdk-posix.py themselves use to tell the two builds apart.
+    esp_idf_version = os.environ.get("ESP_IDF_VERSION", "")
+
+    if esp_idf_version:
+        idf_target = get_idf_target()
+        if not idf_target:
+            print("Could not determine IDF target from sdkconfig")
+            sys.exit(1)
+        # release/TactilitySDK/${version}-${idf_target}/TactilitySDK
+        sdk_path = os.path.join("release", "TactilitySDK", f"{version}-{idf_target}", "TactilitySDK")
+        run_release_script("release-sdk-esp32.py", sdk_path)
+    else:
+        # release/TactilitySDK/${version}-posix-${arch}/TactilitySDK
+        arch = platform.machine()
+        sdk_path = os.path.join("release", "TactilitySDK", f"{version}-posix-{arch}", "TactilitySDK")
+        run_release_script("release-sdk-posix.py", sdk_path)
+
 if __name__ == "__main__":
     main()