Two debuggability follow-ups from reviewing real turn files:
- Request refs are now compact strings — 'context' | 'input' |
'assistant:<index>' | 'toolResult:<toolCallId>' — so a raw JSONL line
reads naturally: {"messages": ["assistant:0", "toolResult:toolu_…"]}.
Same exact-match reducer invariants, via parseRequestRef.
- npm run inspect-turn -- <turnId|path> [callIndex] [--full]: prints,
per model call, the EXACT provider payload (resolved system prompt,
tool list, wire-form messages with user-message context woven in, and
the response/failure) — rebuilt by the same composer the loop sends
through. This is the missing viewer for the derived-not-duplicated
request design: the file stores facts once; the inspector shows what
the model actually received.
Breaking for turn files written since the previous commit (dev only):
wipe ~/.rowboat/storage.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
model_call_requested carried three duplications that dominated turn-file
size (measured on a real 647KB two-step turn): the system prompt (28KB)
and the 38-tool snapshot (40KB) repeated per call despite being byte-
identical to turn_created.agent.resolved, and messages re-inlining the
whole current-turn transcript (230KB re-stating a 207KB tool result).
ModelRequest is now a list of references into the turn's own events —
call 0: [{context}?, {input}]; call N: [{assistant: N-1}, ...that
batch's toolResults in source order]; re-issue after an interruption:
[]. Every referenced byte exists exactly once in the file; the measured
turn drops to ~285KB and each further model call costs ~200 bytes. The
reducer's ordering invariant got stricter: reference lists are matched
exactly against the transcript.
Debuggability is now byte-for-byte at the wire level: ResolvedModel
gains encodeMessages (the structural->wire conversion — user-message
context weaving, attachment rendering, tool-result enveloping, i.e.
convertFromMessages), and composeModelRequest rebuilds the exact
provider payload (resolved system prompt + wrapped tools + materialized
prefix + resolved refs, encoded). The loop transmits exactly the
composer's output, so the durable file plus the composer reproduce what
the model received — pinned by a property test asserting composed ==
sent for every call, and a 2KB size guard on request events. A bridge
test demonstrates the woven wire form (no raw userMessageContext).
Breaking for existing dev turn files (same schemaVersion, pre-release):
wipe ~/.rowboat/storage.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The TurnRuntime per turn-runtime-design.md: constructor-injected,
container-ignorant, no per-turn state — every advanceTurn reconstructs
from the JSONL log, so normal execution and crash recovery share one
path.
- runtime.ts: createTurn/advanceTurn/getTurn; durable-barrier appends
before side effects; sequential sync tools with progress; async tool
exposure + durable suspension; permission pipeline (checker →
optional classifier batch → human/deny fallback, fail-closed on
checker errors); cancellation with synthetic results; recovery that
re-issues interrupted model calls and continues after interrupted
sync tools; model-call-limit exhaustion with machine-readable code.
- fs-repo.ts: date-partitioned append-only JSONL, strict line
validation, path-traversal rejection, per-turn in-process locking.
- stream.ts: hot execution stream — buffers before the consumer
attaches, outcome independent of consumption, close-drops-events.
- context-resolver.ts: chain-walking materialization of context
references with cycle detection.
- Seam interfaces for stage-4 bridges: model/tool registries,
permission checker/classifier, agent resolver, lifecycle bus, clock.
- shared reducer: track classification failures durably so failed
classifications are never re-run.
67 new tests: all nine §26 end-to-end scenarios (mocked deps,
recovery boundaries seeded directly) plus repo/stream/resolver suites.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Durable contracts for the new turn/session runtime, shared by core and
renderer:
- turns.ts: zod schemas for all 16 durable turn events, TurnContext
(previousTurnId ref | inline messages), ModelRequest with contextRef
and current-turn-only messages, ephemeral delta types, reduceTurn
enforcing every spec invariant, and pure derivations
(deriveTurnStatus, turnTranscript, outstanding work).
- sessions.ts: session_created/turn_appended/title_changed schemas,
reduceSession, and the SessionIndexEntry projection.
- vitest wiring for packages/shared (config, build-excluded tests);
92 tests covering happy paths, recovery-shaped histories, and one
named test per corruption invariant.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
