Distillation

Date: Sep 16, 2026

• 🔴 (11:14) packages/opencode/package.json identifies private MIT-licensed package opencode version 1.18.30; scripts are typecheck: tsgo --noEmit, test: bun test --timeout 30000 --only-failures, build: bun run script/build.ts, build:server: node script/build-server.mjs, dev: bun run ./src/index.ts, and dev:temporary: bun run ./src/temporary.ts.
• 🔴 (11:14) packages/opencode/package.json defines test:httpapi as three sequential script/httpapi-exercise.ts runs: --mode coverage, --mode auth, and --mode effect, each with --fail-on-missing --fail-on-skip; it also defines bench:test: bun run script/bench-test-suite.ts and profile:test: bun run script/profile-test-files.ts.
• 🔴 (11:14) packages/opencode/package.json maps binary opencode to ./bin/opencode, exports "./*": "./src/*.ts, and configures #db as ./src/storage/db.bun.ts for bun/default and ./src/storage/db.node.ts for node.
• 🔴 (11:14) packages/sdk/js/package.json identifies @opencode-ai/sdk version 1.18.30; scripts are test: bun test, typecheck: tsgo --noEmit, and build: bun ./script/build.ts.
• 🔴 (11:14) packages/sdk/js/package.json exports ., ./client, ./server, ./v2, ./v2/client, ./v2/gen/client, ./v2/server, and ./v2/types, respectively from ./src/index.ts, ./src/client.ts, ./src/server.ts, ./src/v2/index.ts, ./src/v2/client.ts, ./src/v2/gen/client/index.ts, ./src/v2/server.ts, and ./src/v2/gen/types.gen.ts; the published file set is dist.
• 🟡 (11:14) Assistant verified that the two supplied hashes matched exactly, the base resolved to the requested commit, and git apply --check succeeded against a fresh archive of that commit. The patch contained exactly 33 changed files, and the disposable reconstruction was made non-writable before implementation/test tracing.
• 🟡 (11:14) Review workflow status: 1. completed verification of immutable inputs, repository guidance, scripts, hashes, exact base, and clean 33-file patch application; 2. implementation/test inspection was in progress, covering recovery lifecycle, fencing, replay, migration, concurrency, and generated artifacts; 3. reassessment of seven prior blockers and secondary recovery paths with exact frozen file:line evidence remained pending; 4. a severity-ordered independent verdict ending in the required merge decision remained pending.
• 🔴 (11:14) packages/core/src/session/execution/claim.ts defines SessionExecutionClaim.Claim with readonly sessionID: SessionSchema.ID, executionID: string, and ownerID: string; Values may update assistant_message_id and phase.
• 🔴 (11:14) Session execution leases use node wall clocks. SESSION_EXECUTION_LEASE_MS must exceed the deployment’s maximum clock skew plus one renewal interval; execution IDs immediately fence a node after takeover.
• 🔴 (11:14) An expired Session execution claim never renews itself.
• 🔴 (11:14) SessionExecutionClaim.update(...) in packages/core/src/session/execution/claim.ts renews only when session_id, execution id, and owner_id match and expires_at > now; it sets expires_at to now + SESSION_EXECUTION_LEASE_MS, optionally updates assistant_message_id/phase, and dies with SessionExecutionClaim.Lost if no row is returned.
• 🔴 (11:14) SessionExecutionClaim.clear(...) deletes only a still-unexpired row matching session_id, execution id, and owner_id; it dies with SessionExecutionClaim.Lost if nothing is deleted.
• 🔴 (11:14) SessionExecutionClaim.transaction(...) uses an immediate database transaction and performs update(db, claim) before the supplied effect, thereby validating and renewing the claim inside the transaction.
• 🔴 (11:14) packages/core/src/session/execution/local.ts creates a process owner with crypto.randomUUID(), tracks active claims in Map<SessionSchema.ID, SessionExecutionClaim.Claim>, and creates a new execution ID for each drain.
• 🔴 (11:14) A local drain attempts to insert SessionExecutionTable with phase: "ready", time_created: now, and expires_at: now + SESSION_EXECUTION_LEASE_MS using .onConflictDoNothing(); if no row is claimed, the drain returns without running.
• 🔴 (11:14) After claiming, local execution selects the oldest eligible recovery row where the same session_id has wake_pending = true and recovery_error IS NULL, ordered by time_created then execution_id, and passes its continuation_message_id to input.run(...).
• 🔴 (11:14) Local execution races input.run(claim, force, recovery?.continuationMessageID) against claim renewal repeated every leaseDuration / 3.
• 🔴 (11:14) On a successful local drain, SessionExecutionClaim.clear(db, claim) clears the lease. On non-interruption failure, the implementation rereads the execution row and clears it only when its phase is neither "unknown" nor "continue"; interruption leaves claim cleanup to the interruption path.
• 🔴 (11:14) Local interruption first renews the active claim, forks scoped periodic renewal every leaseDuration / 3, then invokes coordinator.interrupt(...) with claim clearing as cleanup; a SessionExecutionClaim.Lost defect during that cleanup is ignored, while other defects are rethrown.
• 🔴 (11:14) SessionExecutionLocal exposes active: coordinator.active, resume: coordinator.run, and wake: coordinator.wake. If no active claim exists for interruption, it delegates directly to coordinator.interrupt(sessionID).
• 🔴 (11:14) SessionExecutionLocal resolves the Session through SessionStore.Service, dies with Session not found: ${claim.sessionID} if absent, and runs SessionRunner.Service.use((runner) => runner.run({ ...claim, force, recoveryInputID })) under locations.get(session.location).
• 🔴 (11:14) packages/core/src/session/run-coordinator.ts serializes execution by key while allowing different keys to run concurrently. Its Coordinator<Key, E> API provides active, run, wake, and interrupt.
• 🔴 (11:15) Each SessionRunCoordinator entry stores a completion Deferred, optional owner Fiber, optional Exit, pendingWake, and stopping; new entries initialize pendingWake: false and stopping: false.
• 🔴 (11:15) SessionRunCoordinator.run(key) joins an existing non-stopping execution by awaiting its done; if the entry is stopping, it awaits completion and recursively retries. When idle, it creates an entry and starts drain(key, true).
• 🔴 (11:15) SessionRunCoordinator.wake(key) coalesces work by setting pendingWake = true on an existing entry. When idle, it creates an entry and starts drain(key, false).
• 🔴 (11:15) After a successful drain with pendingWake, the coordinator clears that flag and starts a successor drain with force: false after Effect.yieldNow. After other settlement, a pending wake creates a replacement entry and successor; otherwise the key is removed, and the original done Deferred receives the drain exit.
• 🔴 (11:15) SessionRunCoordinator.interrupt(key, cleanup) is uninterruptible once begun: it marks the entry stopping, clears the preexisting pending wake, interrupts the owner fiber, runs cleanup, verifies that interruption settled, and either removes the entry or starts a successor if a new wake arrived during stopping. If no entry/owner exists, it still runs cleanup.
• 🔴 (11:15) If an interrupted Session execution fails to record an exit, SessionRunCoordinator.interrupt(...) throws Error("Interrupted Session execution did not settle"); cleanup failure is propagated after coordinator state is settled.