fix: harden Service Worker activation and install lifecycle

SW-06: correlate activation, reset and drain replies by source object identity
against the captured waiting worker or controller, so an arbitrary same-origin
source cannot close this page's admission, and end a request immediately as
PROTOCOL_MISMATCH when the source is swapped instead of waiting for the drain
timeout. requestActivation() and resetOwnedCaches() are single-flight, so ten
concurrent callers share one nonce, listener and postMessage.

SW-07: an empty in-scope client set is vacuously drained rather than rejecting
a waiting worker when the requester already closed.

SW-08: isolate per-client postMessage failures. A client that cannot receive the
drain request fails immediately instead of holding pending state to the timeout,
skipWaiting() is the activation commit and its failure is a rejection, and the
accepted and reload notifications are sent afterwards as best effort.

SW-09: fence late install work. A fenced worker starts no new candidate work, a
late response body from a non-cooperative fetch is cancelled, a throwing digest
maps to a closed outcome, and a second exact delete of the owned candidate cache
is registered once the abandoned install settles - without extending the public
60s bound.

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

docs/operations/adapter-remediation-ledger.md

@@ -144,10 +144,10 @@ Rollout state starts at `NOT_STARTED`; documented-unimplemented items start at
 | SW-03 | Composed when capability selected | `corepack pnpm exec vitest run tests/unit/service-worker-runtime.test.ts` | `fix: make Service Worker cache and removal outcomes truthful` | `FIXED_NOT_RELEASED` | false removal success | Red `unregister() === false` reported as UNREGISTERED → green FAILED |
 | SW-04 | Composed when capability selected | `corepack pnpm exec vitest run tests/unit/service-worker-runtime.test.ts` | `fix: make Service Worker cache and removal outcomes truthful` | `FIXED_NOT_RELEASED` | removal outcome misreport | Red removal modes always DISABLED → green outcome matrix (ABSENT/UNREGISTERED/PURGED→DISABLED, OWNERSHIP_MISMATCH→INCOMPATIBLE, FAILED→FAILED) |
 | SW-05 | Build gate | `corepack pnpm exec vitest run tests/unit/service-worker-build-input.test.ts` | `fix: make Service Worker cache and removal outcomes truthful` | `FIXED_NOT_RELEASED` | build admission rejection | Red tamper table (stale digest, byte length, cross-origin URL, dot segment, extension mismatch, unknown field, duplicate URL) → green; build gate decodes through the shared codec and recomputes the canonical digest |
-| SW-06 | Composed when capability selected | `corepack pnpm exec vitest run tests/unit/service-worker-runtime.test.ts` | — | `NOT_STARTED` | activation handshake failure | — |
-| SW-07 | Composed when capability selected | `corepack pnpm exec vitest run tests/unit/service-worker-runtime.test.ts` | — | `NOT_STARTED` | activation blocked with zero clients | — |
-| SW-08 | Composed when capability selected | `corepack pnpm exec vitest run tests/unit/service-worker-runtime.test.ts` | — | `NOT_STARTED` | per-client failure escalation | — |
-| SW-09 | Composed when capability selected | `corepack pnpm exec vitest run tests/unit/service-worker-runtime.test.ts` | — | `NOT_STARTED` | late install work observed | — |
+| SW-06 | Composed when capability selected | `corepack pnpm exec vitest run tests/unit/service-worker-runtime.test.ts` | `fix: harden Service Worker activation and install lifecycle` | `FIXED_NOT_RELEASED` | activation handshake failure | Red foreign-source drain, source swap and 10 concurrent activations → green 24/24; replies correlate by source object identity against the captured waiting worker or controller, and activation/reset are single-flight |
+| SW-07 | Composed when capability selected | `corepack pnpm exec vitest run tests/unit/service-worker-runtime.test.ts` | `fix: harden Service Worker activation and install lifecycle` | `FIXED_NOT_RELEASED` | activation blocked with zero clients | An empty in-scope client set is vacuously drained; `clients.matchAll()` failure still rejects |
+| SW-08 | Composed when capability selected | `corepack pnpm exec vitest run tests/unit/service-worker-runtime.test.ts` | `fix: harden Service Worker activation and install lifecycle` | `FIXED_NOT_RELEASED` | per-client failure escalation | Per-client `postMessage` isolation; `skipWaiting()` is the commit point and its failure is REJECTED, with accepted/reload notifications sent only afterwards as best effort |
+| SW-09 | Composed when capability selected | `corepack pnpm exec vitest run tests/unit/service-worker-runtime.test.ts` | `fix: harden Service Worker activation and install lifecycle` | `FIXED_NOT_RELEASED` | late install work observed | Red late-fetch case → green; a fenced worker starts no new candidate work, late response bodies are cancelled, digest throws map to a closed outcome, and a second exact-delete runs once the abandoned install settles without extending the public bound |
 | SW-10 | Protocol V2 migration | `corepack pnpm exec vitest run tests/unit/service-worker-runtime.test.ts` | — | `DEFERRED_TO_MIGRATION` | V1/V2 mismatch fail-close | Not closed here. Full-identity protocol V2 is an expand → dual-read → old-writer drain → contract deployment that spans releases; the prerequisite shared manifest codec and canonical digest landed with SW-05. |
 | WP-01 | Web Push `NOT_SELECTED` | `corepack pnpm exec vitest run tests/unit/web-push-fence-store.test.ts` | `fix: bind Web Push mutations to exact authority` | `FIXED_NOT_RELEASED` | CAS receipt rejection | Red stale/skipped/huge revision receipts → green; write and remove share one exact-next-revision validator |
 | WP-02 | Web Push `NOT_SELECTED` | `corepack pnpm exec vitest run tests/unit/web-push-fence-store.test.ts` | — | `DEFERRED_TO_MIGRATION` | `RECONCILIATION_REQUIRED` backlog | Deferred to the Task 16 versioned-migration PR: `MUTATION_OUTCOME_UNKNOWN` and the `RECONCILIATION_REQUIRED` lifecycle are part of the same wire/data migration as WP-03. |