Q-W1 pt1: extract core/json (json::Reader/Writer), collapse wire Cursor family into core/wire, shared readFileBytes — five JSON decoders and three cursor copies deleted, byte-identical formats, 59/59 green

src/capture.cpp

@@ -43,6 +43,7 @@
 #include <vector>
 
 #include "capture_paths.h"
+#include "core/util/file_bytes.h"
 #include "render_settings.h"
 
 #define REAPERAPI_MINIMAL
@@ -226,20 +227,9 @@ std::string makeUniqueTag() {
     return std::to_string(static_cast<long long>(now));
 }
 
-// Reads the whole file into a byte buffer. Returns an empty vector on any I/O
-// failure (the caller then leaves contentHash empty — the safe, confirm-eliciting
-// direction for an unreadable file).
-std::vector<std::uint8_t> readFileBytes(const std::string& path) {
-    std::ifstream f(path, std::ios::binary | std::ios::ate);
-    if (!f) return {};
-    const std::streamoff size = f.tellg();
-    if (size <= 0) return {};
-    std::vector<std::uint8_t> bytes(static_cast<std::size_t>(size));
-    f.seekg(0);
-    f.read(reinterpret_cast<char*>(bytes.data()), size);
-    if (!f) return {};
-    return bytes;
-}
+// Whole-file reads go through the shared core/util readFileBytes (Q-W1, T2-03):
+// empty on any I/O failure (the caller then leaves contentHash empty — the safe,
+// confirm-eliciting direction for an unreadable file).
 
 }  // namespace