URI decoding, process env, compiler info, httpasio strands, regex route removal (#841)

- Percent-decode URIs in ASIO HTTP server to match http.sys CookedUrl behavior, ensuring consistent decoded paths across backends
- Add Environment field to CreateProcOptions for passing extra env vars to child processes (Windows: merged into Unicode environment block; Unix: setenv in fork)
- Add GetCompilerName() and include it in build options startup logging
- Suppress Windows CRT error dialogs in test harness for headless/CI runs
- Fix mimalloc package: pass CMAKE_BUILD_TYPE, skip cfuncs test for cross-compile
- Add virtual destructor to SentryAssertImpl to fix debug-mode warning
- Simplify object store path handling now that URIs arrive pre-decoded
- Add URI decoding test coverage for percent-encoded paths and query params
- Simplify httpasio request handling by using strands (guarantees no parallel handlers per connection)
- Removed deprecated regex-based route matching support
- Fix full GC never triggering after cross-toolchain builds: The `gc_state` file stores `system_clock` ticks, but the tick resolution differs between toolchains (nanoseconds on GCC/standard clang, microseconds on UE clang). A nanosecond timestamp misinterpreted as microseconds appears far in the future (~year 58,000), bypassing the staleness check and preventing time-based full GC from ever running. Fixed by also resetting when the stored timestamp is in the future.
- Clamp GC countdown display to configured interval: Prevents nonsensical log output (e.g. "Full GC in 492128002h") caused by the above or any other clock anomaly. The clamp applies to both the scheduler log and the status API.

2 files changed, 10 insertions, 0 deletions

diff --git a/src/zencore/include/zencore/process.h b/src/zencore/include/zencore/process.h
index 809312c7b..3177f64c1 100644
--- a/src/zencore/include/zencore/process.h
+++ b/src/zencore/include/zencore/process.h
@@ -6,6 +6,9 @@
 #include <zencore/zencore.h>
 
 #include <filesystem>
+#include <string>
+#include <utility>
+#include <vector>
 
 namespace zen {
 
@@ -68,6 +71,12 @@ struct CreateProcOptions
 	const std::filesystem::path* WorkingDirectory = nullptr;
 	uint32_t					 Flags			  = 0;
 	std::filesystem::path		 StdoutFile;
+
+	/// Additional environment variables for the child process. These are merged
+	/// with the parent's environment — existing variables are inherited, and
+	/// entries here override or add to them.
+	std::vector<std::pair<std::string, std::string>> Environment;
+
 #if ZEN_PLATFORM_WINDOWS
 	JobObject* AssignToJob = nullptr;  // When set, the process is created suspended, assigned to the job, then resumed
 #endif
diff --git a/src/zencore/include/zencore/system.h b/src/zencore/include/zencore/system.h
index a67999e52..2e39cc660 100644
--- a/src/zencore/include/zencore/system.h
+++ b/src/zencore/include/zencore/system.h
@@ -17,6 +17,7 @@ std::string_view GetOperatingSystemName();
 std::string		 GetOperatingSystemVersion();
 std::string_view GetRuntimePlatformName();	// "windows", "wine", "linux", or "macos"
 std::string_view GetCpuName();
+std::string_view GetCompilerName();
 
 struct SystemMetrics
 {