forked from molecule-ai/molecule-core
44bb35a926
PR-1 shipped the `delegations` table + `DelegationLedger` helper. PR-3
wired the sweeper. PR-4 wired the dashboard. But no PR ever wired
`ledger.Insert` from a production code path — the table stayed empty,
the sweeper had nothing to sweep, the dashboard had nothing to show.
This PR closes that gap. Behind feature flag `DELEGATION_LEDGER_WRITE=1`
(default off), the legacy activity_logs writes are mirrored to the
durable ledger:
- insertDelegationRow → ledger.Insert (queued)
- updateDelegationStatus → ledger.SetStatus on every status transition
- executeDelegation completion path → ledger.SetStatus(completed,
result_preview) for the result preview that activity_logs already
stores in response_body
- Record handler → ledger.Insert + ledger.SetStatus(dispatched) so
agent-initiated delegations land in the same table
## Why a flag
The legacy flow has ~30 strict-sqlmock tests pinning exactly which SQL
statements fire per handler. Adding ledger writes always-on would
force adding ExpectExec stanzas to each. Flag-off keeps all 30 green
without churn; flag-on lets operators populate the table in staging
to feed the sweeper + dashboard once the agent-side cutover (RFC #2829
PR-5) has proven the round-trip end-to-end.
Default off → byte-identical to pre-#318 behavior.
## Status vocabulary mapping
activity_logs uses a freer status vocabulary than the ledger's CHECK
constraint allows. updateDelegationStatus is called with values like
"received" that the ledger doesn't accept; the wiring filters via a
switch to only forward known-good values, skipping anything else.
Record's first activity_logs row is `dispatched` but the ledger's
Insert path requires `queued` as initial state. Insert as queued first;
the very next SetStatus(..., dispatched) promotes it on the same row.
## Coverage
8 wiring tests (delegation_ledger_writes_test.go):
- flag off → no SQL fired (rollout safety contract)
- flag on → INSERT + UPDATE fire as expected
- flag rejects loose truthy values (true/yes/0/on/TRUE) — only "1"
is the on signal, matching PR-2 + PR-5 conventions
- terminal-state replay swallows ErrInvalidTransition (legacy is
authoritative; ledger replay error is not a delegation failure)
All 30 existing delegation_test.go tests still pass — flag default off
keeps the strict-sqlmock surface unchanged.
Refs RFC #2829.
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