Function primeBaseline

packages/pi-plugin/src/context-handler.test.ts:2478–2520

(
			db: ReturnType<typeof createTestDb>,
			sessionId: string,
		)

		}

		async function primeBaseline(
			db: ReturnType<typeof createTestDb>,
			sessionId: string,
		) {
			updateSessionMeta(db, sessionId, {
				piStableIdScheme: 1,
				systemPromptHash: BASE_SYSTEM_HASH,
			});
			recordPiLiveModel(sessionId, BASE_MODEL);
			const fake = createFakePi();
			registerPiContextHandler(fake.pi as never, {
				db,
				ctxReduceEnabled: true,
				protectedTags: 0,
				heuristics: {},
				injection: { injectionBudgetTokens: 10_000 },
				scheduler: { executeThresholdPercentage: 80 },
			});
			const handler = fake.handlers.get("context") as (
				event: { messages: never[] },
				ctx: never,
			) => Promise<{ messages: never[] }>;

			const firstMessages = buildMessages();
			await handler(
				{ messages: firstMessages },
				contextFor(sessionId, firstMessages),
			);

			const toolTag = getTagsBySession(db, sessionId).find(
				(tag) => tag.type === "tool",
			);
			if (!toolTag) throw new Error("expected Pi tool tag after baseline pass");
			queuePendingOp(db, sessionId, toolTag.tagNumber, "drop", 1);
			updateSessionMeta(db, sessionId, {
				lastResponseTime: Date.now(),
				cacheTtl: "59m",
				lastContextPercentage: 40,
				lastInputTokens: 4_000,
			});

			return { handler, toolTagNumber: toolTag.tagNumber };
		}

		it("drains queued pending ops on a DEFER scheduler pass when m[0] HARD-folds", async () => {
			const db = createTestDb();