- Controllers/SelfTestController.wsc: runs the same checks as
  tests/Test-Components.vbs in-process, returns JSON
  ({ok, checks:[{name,pass,detail}]}) - no PowerShell/cscript/SSH needed
- Application.wsc routes /self-test to it; always HTTP 200 (pass/fail lives
  in the JSON body, matching conventional health-check design)
- tests/run-self-test.sh: pure curl + python3 wrapper, verified working
  directly from the Linux host with zero Windows tooling
- tests/Test-Http.ps1: now also calls /self-test and folds each check into
  its own PASS/FAIL output
- Verified both the happy path and a genuine failure path (deliberately
  broke HomeController's registration, confirmed /self-test correctly
  reported ok:false with the specific failing check pinpointed, then
  re-registered and confirmed full recovery)
- docs updated: ARCHITECTURE.md, DECISIONS.md, TEST-RESULTS.md

- RequestContext.wsc: per-request path/method/correlationId/elapsed-time,
  primitive-only, no ASP intrinsics
- Application.Run(ctx, ...) centralizes expected-vs-unexpected outcomes and
  best-effort logging to logs/app.log (lock-file mutex, no ASP Application
  intrinsic available by contract)
- Fixed: Property Get requires a Class block, fails at WSC top level
  (regsvr32 exit 5) -> switched to plain Function-based getters
- Fixed: FormatNumber() leaks a locale comma into correlation ids
- Fixed: Randomize+Rnd() collide within the same clock tick -> switched to
  FileSystemObject.GetTempName()
- Verified real concurrent-logging tradeoffs experimentally (retry-the-open
  alone made it worse; lock-file mutex is correct but a full-coverage retry
  budget costs ~330ms latency, so a short budget + accepted best-effort log
  loss under heavy load is used instead)
- Investigated and resolved an inherited IUSR:(F) ACL finding under logs/
  (standard NTFS CREATOR OWNER materialization, correctly scoped, not a
  broad grant)
- All M2 SPEC/plan gate items verified PASS on real IIS; see
  docs/TEST-RESULTS.md and docs/DECISIONS.md