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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "liqa",
-  "version": "1.10.0",
+  "version": "1.10.1",
   "private": true,
   "workspaces": [
     "server",