findings(E-10..E-22): fix the defects a code review found in the E-1..E-9 work

A review of the group-E fixes found 13 further defects; ten were introduced by
those fixes, two pre-existed and were merely relocated, one is deferred.

Services / transport
  E-10  retireWorker synthesized no bg/exit frame, so sharedspice's s_bgRunning
        mirror stayed latched true after a mid-run worker death: Run stayed
        disabled and the promised fresh-worker restart was unreachable for the
        whole session. Retirement now dispatches a synthetic controlled-exit
        straight to the installed handler (never through dispatchEvt — a
        fabricated frame must not touch the credit ledger). Driving the repro
        exposed two further defects, both fixed here: a replacement worker
        trapped on pre-init engine reads, and the rerun's cm_input_path/circ hit
        that uninitialized engine before KiCad's validate() re-init (the native
        flow assumes a crashed engine survives in-process — true for the dll,
        false for a dead worker). Reads now answer their empty shapes pre-init,
        writes lazy-init, and init is idempotent per worker engine.
  E-19  dispatchEvt acked only AFTER handler(evt) returned, and the sharedspice
        client deliberately rethrows non-trap errors — so each throw leaked one
        unit of the 64-frame credit window until the stream died with a
        misattributed "transport exceeded". The ack moves to a finally in both
        service copies; the throw still propagates (the trap machinery needs it).
  E-20  the oversize-line path promises to transfer the accepted prefix, but
        with the window full that flush only DEFERS, and stopEventStream wiped
        the deferred queue — losing the diagnostics that explain the failure.
        The terminal notice now carries them as pendingEvents; both hosts
        deliver them in order, unacked (the fatal frame is outside the credit
        protocol).
  E-21  the 30s prefetch deadline discarded every model already collected and
        reported nothing. A caller-owned progress sink ships the partials and
        the omission reaches the export report. (Awaiting the aborted collection
        was rejected: an in-flight source fetch is not abortable — E-4's
        original disease.) Plus a serving-candidate memo, so a .wrl ref served
        by its .step fallback stops re-probing the miss on every export.

Scheduler
  E-14  _terminalizeNativeTrap classified by message substring, so any plain JS
        error QUOTING 'Aborted(' or 'out of bounds' permanently bricked a
        healthy instance. Now structural only: instanceof RuntimeError plus a
        duck-typed name check (verified in this build's glue that abort() throws
        a genuine RuntimeError both pre- and post-runtime-init). Module.onAbort
        now latches the gate — the authoritative notification, previously
        ignored.
  E-15  the shim half: _pumpResume gates on terminal (catching wakes already
        queued at latch time) and resolveWait refuses on terminal WITHOUT
        consuming the entry, so a frame stays visibly parked rather than
        resuming inside a trapped module.
  E-16  the E-5 handler read the realm-global scheduler at dispatch instead of
        its installing module's; also frees the per-line buffer on the non-trap
        rethrow path.
  E-11  get_vec trusted the worker's res.length over the transferred arrays.
        Observed death shape: a 4 GiB std::vector threw an unhandled
        std::length_error that exited the editor's main loop. Now clamped, with
        the buffers freed on every failure path.

Guardrails (replacing two deferred refactors: e2e→production-code injection and
collapsing the four copies of the worker-lifecycle machinery)
  E-18  the source contract asserted comment-string counts — rewording failed
        CI while moving a guard outside its #ifdef passed. It now parses the
        #ifdef regions and asserts on code.
        service-stub-parity.ts pins what the four lifecycle copies must share:
        credit-window equality parsed from source, the finally-ack, boot
        deadlines, terminal-notice consumption. The transport numbers are now
        single-sourced from the worker.
        CI actually runs the gates: the web/standalone vitest suites (which had
        NEVER run in CI), the reducer, the source contract and the parity tool —
        with a NON_PLAYWRIGHT_GATES check so deleting a step re-fails the lint.
  E-22  the e2e occ stub's 60s boot watchdog, deleted in a66e109, is restored in
        the ngspice-stub shape with a wedgeNextBoot() repro hook.

Every behavioral fix has red-then-green evidence (the reds were captured first).
E-17 (a stale RUNNING cross-stamping the next run's generation under E-6's
transport deferral) is DEFERRED with its analysis recorded — a real fix needs
run identity on the bg frames.

Test hygiene: the dwell lint now requires the mandated ": <why>" and all 47 bare
markers carry their reason; three export-report dwells became modal-lease polls;
exact-ledger assertions became relative deltas; the dead data-wx-dom-id branch,
an unused fault hook and unused receipt plumbing are gone; abort scans, wx
dialog drivers, the sim harness and the vitest FakeWorker are each one copy now.

Bumps kicad and wxwidgets to their findings-group-e tips.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

.github/workflows/wasm-build.yml

@@ -393,6 +393,14 @@ jobs:
           corepack enable
           pnpm install --frozen-lockfile
 
+      # The web/standalone vitest suites carry the red/green evidence for the
+      # findings-E service-layer fixes (worker lifecycle, transport credits,
+      # admission gate, models prefetch). Node-env, no wasm build needed.
+      - name: web standalone unit tests (vitest)
+        if: inputs.run_tests
+        working-directory: web
+        run: pnpm --filter @pcbjam/standalone test
+
       # kicad_tools gates (tasks-runner 0001 R2): the corpus lint (fixtures +
       # shared-codec round-trips — the wrapInBoardEnvelope-class E3 gate,
       # kicad-validity 0001 §5) and the CLI contract the backend job runner
@@ -415,6 +423,18 @@ jobs:
           npm ci
           npm test
 
+      # Findings-E gates: the ngspice transport reducer (production worker
+      # source in a node:vm), the C++/shim source contract, and the
+      # stub/production parity tripwire. lint-ci-coverage asserts these exact
+      # invocations stay wired (NON_PLAYWRIGHT_GATES).
+      - name: findings-E transport reducer + source/parity contracts
+        if: inputs.run_tests
+        working-directory: tests
+        run: |
+          npm run ngspice:worker-batch
+          npm run findings-e:contract
+          npm run findings-e:parity
+
       # Browser binaries keyed on the lockfile (which pins the playwright version).
       # On a hit `playwright install` skips the downloads; --with-deps still
       # apt-installs its small OS dep set either way.