fix(cli): cache failed direct script builds

Author: GaspardKirira

include/vix/cli/commands/run/RunDetail.hpp

@@ -293,12 +293,17 @@ namespace vix::commands::RunCommand::detail
     fs::path rootDir;
     fs::path binaryPath;
     fs::path metaFile;
+    fs::path failureMetaFile;
     fs::path stdoutLogPath;
     fs::path stderrLogPath;
 
     std::string cacheKey;
     std::string rebuildReason;
+
+    int cachedFailureExitCode = 0;
+
     bool cacheHit = false;
+    bool cachedFailure = false;
     bool needsRebuild = true;
   };
 
@@ -720,6 +725,16 @@ namespace vix::commands::RunCommand::detail
    */
   bool persist_direct_script_cache_metadata(const DirectScriptPlan &plan);
 
+  bool persist_direct_script_failure_cache(
+      const DirectScriptPlan &plan,
+      int exitCode,
+      const std::string &stdoutText,
+      const std::string &stderrText);
+
+  int replay_direct_script_cached_failure(
+      const DirectScriptPlan &plan,
+      const DirectScriptCacheState &cache);
+
   // ===========================================================================
   // Script mode execution
   // ===========================================================================

src/commands/run/RunScript.cpp

@@ -1520,6 +1520,13 @@ namespace vix::commands::RunCommand::detail
 
         const DirectScriptCacheState cache = load_direct_script_cache_state(directPlan);
 
+        if (cache.cachedFailure)
+        {
+          return replay_direct_script_cached_failure(
+              directPlan,
+              cache);
+        }
+
         if (cache.needsRebuild)
         {
           const LiveRunResult build = run_cmd_live_filtered_capture(
@@ -1532,6 +1539,16 @@ namespace vix::commands::RunCommand::detail
 
           if (build.exitCode != 0)
           {
+            if (!persist_direct_script_failure_cache(
+                    directPlan,
+                    build.exitCode,
+                    build.stdoutText,
+                    build.stderrText))
+            {
+              std::cerr
+                  << "warning: unable to persist direct script failure cache\n";
+            }
+
             bool handled = false;
 
             if (!build.stdoutText.empty() || !build.stderrText.empty())