Files
pi_harness/packages/agent/vitest.harness.config.ts
Cristina Poncela Cubeiro 9e7582aa03 feat: sqlite session storage (#6594)
This PR:

- Adds retainedTail to compaction entries in the new agent harness so we don't have to walk up the tree for the 2000 tokens before compaction,
- Changes getPathToRoot to getPathToRootOrCompaction to only load until last compaction, as unnecessary to access all nodes where it is called,
- Adds a SQLite storage backend, in a separate packages/session-backend-sqlite, with a migration system and schemas as per on-site discussions: sessions to match session header messages (except for metadata, which I couldn't understand what it's used for or where it gets written, so I omitted it), session_entries for shared entry types as columns plus payload as a json for what remains, session_sequences to represent the append-only, serialized nature of the jsonl files, branch_entries to attribute nodes to branches (relationship one-to-many), and session_materialized with the session info (see /session in TUI) to act as a "cache" or quick-access for costs, message count, token info, labels, session name, and model-thinking-level config (e.g. for fast resume).
- This is compatible with the new agent harness Session abstraction.
2026-07-21 11:36:31 +02:00

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TypeScript

import { fileURLToPath } from "node:url";
import { defineConfig } from "vitest/config";
const aiSrcIndex = fileURLToPath(new URL("../ai/src/index.ts", import.meta.url));
const aiSrcCompat = fileURLToPath(new URL("../ai/src/compat.ts", import.meta.url));
const agentSrcIndex = fileURLToPath(new URL("../agent/src/index.ts", import.meta.url));
export default defineConfig({
test: {
globals: true,
environment: "node",
testTimeout: 30000,
include: ["test/harness/**/*.test.ts"],
coverage: {
provider: "v8",
all: true,
include: ["src/harness/**/*.ts", "src/agent.ts", "src/agent-loop.ts"],
exclude: ["src/**/*.d.ts"],
reporter: ["text", "html", "lcov"],
reportsDirectory: "coverage/harness",
},
},
resolve: {
alias: [
{ find: /^@earendil-works\/pi-agent-core$/, replacement: agentSrcIndex },
{ find: /^@earendil-works\/pi-ai$/, replacement: aiSrcIndex },
{ find: /^@earendil-works\/pi-ai\/compat$/, replacement: aiSrcCompat },
],
},
});