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fix: install bounded Browser RPC stream leases

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R-04: install the RPC contract bindings as exact immutable snapshots. Registry
and row data are copied from own data descriptors into frozen null-prototype
maps before validation, so a getter is never invoked, extra and symbol keys and
malformed descriptors are composition-time TypeErrors, and the runtime reads
only the snapshot. A post-validation mutation can no longer change replay
policy, deadlines, byte ceilings or transport selection.

R-01: bound transport stream cleanup. The generation is fenced and listeners
released immediately, and iterator.return() is awaited only within a cleanup
bound, so a non-cooperative iterator cannot keep the application generator, its
listeners or the total deadline alive. Unresolved cleanup stays observed.

R-05: reject oversized WebSocket text frames before allocating an encoded copy
and count UTF-8 bytes incrementally with an early exit, matching TextEncoder for
surrogate pairs and lone surrogates.

R-06: canonicalise clock and generation-fence failures into the closed Result
taxonomy instead of letting them escape as native rejections, with listener and
timer cleanup on every exit path.

Browser RPC remains AVAILABLE_NOT_COMPOSED; R-07 transport evidence is still
required before composition.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
DongHyeonka
2026-08-14 00:00:15 +09:00
co-authored by Claude Opus 5
parent 2f29ccbf1a
commit 8f67974f68
7 changed files with 585 additions and 38 deletions
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docs/operations/adapter-remediation-ledger.md
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@@ -104,12 +104,12 @@ Rollout state starts at `NOT_STARTED`; documented-unimplemented items start at
| ID | Activation | Red test command | Fix commit/PR | Rollout state | Rollback trigger | Evidence |
| --- | --- | --- | --- | --- | --- | --- |
| R-01 | Browser RPC `AVAILABLE_NOT_COMPOSED` | `corepack pnpm exec vitest run tests/unit/browser-rpc/browser-rpc-runtime.test.ts` | — | `NOT_STARTED` | stream lease deadlock | — |
| R-01 | Browser RPC `AVAILABLE_NOT_COMPOSED` | `corepack pnpm exec vitest run tests/unit/browser-rpc/browser-rpc-runtime.test.ts` | `fix: install bounded Browser RPC stream leases` | `FIXED_NOT_RELEASED` | stream lease deadlock | Stream cleanup is bounded; the generator no longer waits indefinitely on a non-cooperative `iterator.return()` |
| R-02 | Realtime `NOT_SELECTED` | `corepack pnpm exec vitest run tests/unit/realtime/stream-coordinator.test.ts` | `fix: retain realtime work through draining` | `FIXED_NOT_RELEASED` | stream stuck in `DRAINING` | Red never-settling effect and recovery → green 27/27; `close()` returns `IDLE_TIMEOUT` while a task is retained and success only after actual settlement |
| R-03 | Realtime `NOT_SELECTED` | `corepack pnpm exec vitest run tests/unit/realtime/live-poll-handoff-coordinator.test.ts` | `fix: retain realtime work through draining` | `FIXED_NOT_RELEASED` | retired-writer set growth | Red overflow fail-close then `close()` → green 11/11; retired writers are waited on and only removed once actually quiesced |
| R-04 | Browser RPC `AVAILABLE_NOT_COMPOSED` | `corepack pnpm exec vitest run tests/unit/browser-rpc/browser-rpc-contract.test.ts` | — | `NOT_STARTED` | binding install rejection | — |
| R-05 | WebSocket protocol codec | `corepack pnpm exec vitest run tests/unit/realtime/websocket-protocol.test.ts` | — | `NOT_STARTED` | frame rejection regression | — |
| R-06 | Browser RPC `AVAILABLE_NOT_COMPOSED` | `corepack pnpm exec vitest run tests/unit/browser-rpc/browser-rpc-runtime.test.ts` | — | `NOT_STARTED` | closed-failure taxonomy drift | — |
| R-04 | Browser RPC `AVAILABLE_NOT_COMPOSED` | `corepack pnpm exec vitest run tests/unit/browser-rpc/browser-rpc-contract.test.ts` | `fix: install bounded Browser RPC stream leases` | `FIXED_NOT_RELEASED` | binding install rejection | Red post-validation mutation, accessor and symbol cases → green 19/19; getters are never invoked |
| R-05 | WebSocket protocol codec | `corepack pnpm exec vitest run tests/unit/realtime/websocket-protocol.test.ts` | `fix: install bounded Browser RPC stream leases` | `FIXED_NOT_RELEASED` | frame rejection regression | Red oversize frame allocated an encoder copy → green 8/8; byte counts match `TextEncoder` including lone surrogates |
| R-06 | Browser RPC `AVAILABLE_NOT_COMPOSED` | `corepack pnpm exec vitest run tests/unit/browser-rpc/browser-rpc-runtime.test.ts` | `fix: install bounded Browser RPC stream leases` | `FIXED_NOT_RELEASED` | closed-failure taxonomy drift | Clock and fence reads are canonicalised into the closed Result taxonomy with single-exit cleanup |
| R-07 | Promotion blocker | concrete transport conformance evidence | — | `PROMOTION_BLOCKED` | n/a | — |
### Browser transfer (`docs/reviews/adapters/04-browser-transfer.md`)