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feat(migration): port legacy runs into the turn/session runtime at startup

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One-time startup migration that scans ~/.rowboat/runs/*.jsonl and converts
each legacy run into the new event-sourced runtime, so existing chats and
agent history are visible and continuable after the runtime rewrite.

Mapping (a run is one whole conversation; turn boundaries are user messages):
- copilot_chat run  -> 1 session (sessionId = original runId) + one turn per
                       user message (turn ids <runId>-tNNN).
- every other run   -> a single standalone turn whose id IS the original runId,
                       so live-note (lastRunId) and background-task (runs.log)
                       history views resolve it via sessions:getTurn with no
                       renderer change.
- code_session runs are skipped (Code mode still uses the old runtime).

- convert.ts: pure convertRun(); synthesizes a reduceTurn/reduceSession-legal
  event log (exact request refs, permission replay, denials -> runtime isError
  results, reasoning parts preserved) and validates via the reducers before
  returning.
- migrate.ts: defensive IO runner. Successful runs are moved to runs-archive/
  (that move is the idempotency guard); failures are left in place (still
  served by the runs:fetch fallback) and retried next launch. Per-run
  try/catch never blocks boot. Writes config/runs-migration.json.
- main.ts: runs before sessions.initialize() and logs an [runs-migration]
  summary (N turns across M sessions, skipped/failed counts).
- Tests: 13 cases over 4 real (redacted) run fixtures — conversion, session
  chaining, deny->error, reasoning preservation, transcript fidelity,
  archive-on-success, skip, quarantine, idempotency, and read-back through the
  real FSTurnRepo/FSSessionRepo.

Dry-run on real data: 19 runs -> 3 sessions + 21 turns, 0 failures.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Ramnique Singh 2026-07-02 21:56:04 +05:30
parent a8420f99ce
commit 17f18a35a1
9 changed files with 1096 additions and 0 deletions
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20
apps/x/apps/main/src/main.ts
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@ -36,6 +36,7 @@ import { backgroundTaskEventConsumer } from "@x/core/dist/background-tasks/event
import { init as initLocalSites, shutdown as shutdownLocalSites } from "@x/core/dist/local-sites/server.js";
import { shutdown as shutdownAnalytics } from "@x/core/dist/analytics/posthog.js";
import { identifyIfSignedIn } from "@x/core/dist/analytics/identify.js";
import { migrateRuns } from "@x/core/dist/migrations/runs/migrate.js";
import { initConfigs } from "@x/core/dist/config/initConfigs.js";
import { getAgentSlackCliStatus } from "@x/core/dist/slack/agent-slack-exec.js";
@ -389,6 +390,25 @@ app.whenReady().then(async () => {
// start runs watcher
startRunsWatcher();
// One-time: port legacy runs/*.jsonl into the new turn/session runtime.
// Must run BEFORE the session index is built so migrated sessions are picked
// up by the startup scan. Fully defensive — never blocks boot.
try {
const migration = migrateRuns();
if (migration.scanned > 0) {
console.log(
`[runs-migration] migrated ${migration.migratedTurns} turn(s) across ` +
`${migration.migratedSessions} session(s) from ${migration.scanned} run(s) ` +
`(${migration.skipped} skipped, ${migration.failed.length} failed)`,
);
for (const failure of migration.failed) {
console.warn(`[runs-migration] left in place (failed): ${failure.file} — ${failure.error}`);
}
}
} catch (error) {
console.error('[runs-migration] pass failed:', error);
}
// New runtime: build the in-memory session index (startup scan) before the
// renderer can list sessions, then forward the session bus to windows.
await container.resolve<ISessions>('sessions').initialize();