fix(worker): surface the real reason a Claude run failed instead of a generic exit-code message

StreamAnalyzer now reads subtype/terminal_reason/errors from the CLI's result
event, and TaskRunner builds a specific ErrorMarkdown from them: max_turns names
the turn budget and points at set_task_config + requeue, api_error passes
through the provider's own message (which carries the reset time), and any
other terminal_reason is appended to the previous generic text instead of
staying invisible. Falls through to the old "exited with code N and no result"
text when there's no terminal_reason at all (a real crash).

src/ClaudeDo.Worker/Runner/ClaudeProcess.cs

@@ -105,6 +105,9 @@ public sealed class ClaudeProcess : IClaudeProcess
                 TokensIn = streamResult.TokensIn,
                 TokensOut = streamResult.TokensOut,
                 Blocks = streamResult.Blocks,
+                ResultSubtype = streamResult.ResultSubtype,
+                TerminalReason = streamResult.TerminalReason,
+                Errors = streamResult.Errors,
             };
         }
 
@@ -115,12 +118,19 @@ public sealed class ClaudeProcess : IClaudeProcess
         return new RunResult
         {
             ExitCode = exitCode,
+            // Kept even on failure: a terminal reason like api_error often carries the
+            // provider's own message (e.g. session-limit + reset time) in this field,
+            // with nothing useful on stderr.
+            ResultMarkdown = streamResult.ResultMarkdown,
             ErrorMarkdown = error,
             SessionId = streamResult.SessionId,
             TurnCount = streamResult.TurnCount,
             TokensIn = streamResult.TokensIn,
             TokensOut = streamResult.TokensOut,
             Blocks = streamResult.Blocks,
+            ResultSubtype = streamResult.ResultSubtype,
+            TerminalReason = streamResult.TerminalReason,
+            Errors = streamResult.Errors,
         };
     }
 }