fix(scenario-logs): fix out-of-order run log persistence

- Add seq column assigned in call order to fix logs racing each other
  as fire-and-forget writes (e.g. a snippet's "started" entry could be
  saved after its "finished" entry)
- Log snippet start/finish/failure via context.runSnippet, matching
  existing step start/pass/fail logging
- Rework Markdown log export to per-entry sections instead of a table
- Version bump: 1.10.0 -> 1.10.1

server/src/scenario/scenario.service.ts

@@ -402,7 +402,7 @@ export class ScenarioService {
       );
     const logs = await this.runLogRepo.find({
       where: q?.trim() ? { runId, message: Like(`%${q.trim()}%`) } : { runId },
-      order: { createdAt: "ASC" },
+      order: { seq: "ASC", createdAt: "ASC" },
     });
     return Object.assign(run, { logs });
   }
@@ -422,7 +422,7 @@ export class ScenarioService {
       );
     const logs = await this.runLogRepo.find({
       where: { runId },
-      order: { createdAt: "ASC" },
+      order: { seq: "ASC", createdAt: "ASC" },
     });
 
     if (format === "csv") {
@@ -439,17 +439,10 @@ export class ScenarioService {
       return rows.join("\n");
     }
 
-    const lines = [
-      `# Run ${runId} logs`,
-      "",
-      "| Timestamp | Level | Message |",
-      "| --- | --- | --- |",
-      ...logs.map(
-        (l) =>
-          `| ${l.createdAt.toISOString()} | ${l.level} | ${l.message.replace(/\|/g, "\\|").replace(/\n/g, "<br>")} |`,
-      ),
-    ];
-    return lines.join("\n");
+    const sections = logs.map(
+      (l) => `## [${l.level}] ${l.createdAt.toISOString()}\n\n${l.message}`,
+    );
+    return [`# Run ${runId} logs`, ...sections].join("\n\n");
   }
 
   async waitForRun(