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feat(db): a roadmap without 'now' rows, chat ids two devices can share, the learner-model tables

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Three storage changes the reworked app needs, as migration 8.

Progress. "Which unit is current" was a 'now' state on each unit's row. Two
devices that advanced could leave two of them, and leaving a finished unit
through the roadmap panel wrote it back to 'todo' — goToUnit un-finished
work. Where he is now lives in one place, meta road.unit; a unit's row
records only what is true of that unit: done, confidence, and room for the
answer count and the tutor's note that earned progress needs. The migration
carries the most recently written 'now' row across with its own stamp.

Chat. Turn ids were INTEGER PRIMARY KEY — max+1 on whichever device wrote
them, restarting at 1 after a clear — so two devices continuing a lesson
both wrote turn 201 and sync treated two different turns as one row. Ids
are UUIDv7 now, and the transcript is ordered by (created_at, id). Existing
turns become legacy:<device>:<n>, zero-padded so turns sharing a timestamp
keep the order they were written in; their tombstones are renamed with them.

The learner model gets its tables: evidence (lib/srs.js's record, plus the
rounds of the first and last CORRECT answer, which PORT.md measures and lib
does not), confusion, and phase_ledger for the 다지기 checklist, with a
confirmed flag so putting an item back is an edit rather than a delete.

A roadmap reset now clears the ledger and road.*; a full wipe also clears
evidence, confusions and learner.* — the artifact's wipe left its round
counter and confusion list behind. What a learner knows about words
survives a roadmap-only reset, as it should.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
MechaCat02
2026-09-16 20:10:58 +02:00
parent 48987b96ae
commit bf9b5950da
10 changed files with 391 additions and 79 deletions
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40
test/db/conformance.ts
View File

@@ -14,6 +14,7 @@ import {
seedMeta,
seedProgress,
editCard,
editCurrentUnit,
editMeta,
editPeek,
editStudyLog,
@@ -23,7 +24,18 @@ import {
import { newCard, grade, GOOD } from "@lib/srs.js";
/** Every table that carries user data, and therefore a write timestamp. */
const SYNCABLE = ["card", "progress", "chat", "meta", "study_log", "peek", "custom_word"] as const;
const SYNCABLE = [
"card",
"progress",
"chat",
"meta",
"study_log",
"peek",
"custom_word",
"evidence",
"confusion",
"phase_ledger",
] as const;
export function conformanceSuite(name: string, open: () => Promise<Db>): void {
describe(`Db conformance — ${name}`, () => {
@@ -240,27 +252,27 @@ export function conformanceSuite(name: string, open: () => Promise<Db>): void {
});
it("an edit on top of a seeded row promotes it from 0", async () => {
await seedProgress(db, "2.1");
const seeded = await db.get<{ updated_at: number }>(
"SELECT updated_at FROM progress WHERE unit_id='2.1'",
await seedProgress(db, "1.1");
const seeded = await db.get<{ v: string; updated_at: number }>(
"SELECT v, updated_at FROM meta WHERE k='road.unit'",
);
expect(seeded?.updated_at).toBe(0);
expect(seeded).toEqual({ v: "1.1", updated_at: 0 });
await editUnitConfidence(db, "2.1", 55);
const edited = await db.get<{ updated_at: number; confidence: number }>(
"SELECT updated_at, confidence FROM progress WHERE unit_id='2.1'",
await editCurrentUnit(db, "2.1");
const edited = await db.get<{ v: string; updated_at: number }>(
"SELECT v, updated_at FROM meta WHERE k='road.unit'",
);
expect(edited?.confidence).toBe(55);
expect(edited?.v).toBe("2.1");
expect(edited?.updated_at).toBeGreaterThan(0);
});
it("seeding never overwrites a real edit", async () => {
await editUnitConfidence(db, "3.1", 90);
await seedProgress(db, "3.1"); // first-run path running again
const row = await db.get<{ confidence: number; updated_at: number }>(
"SELECT confidence, updated_at FROM progress WHERE unit_id='3.1'",
await editCurrentUnit(db, "3.1");
await seedProgress(db, "1.1"); // first-run path running again
const row = await db.get<{ v: string; updated_at: number }>(
"SELECT v, updated_at FROM meta WHERE k='road.unit'",
);
expect(row?.confidence).toBe(90);
expect(row?.v).toBe("3.1");
expect(row?.updated_at).toBeGreaterThan(0);
});
});

95
test/db/migration-8.test.ts Normal file
View File

@@ -0,0 +1,95 @@
/* Migration 8 — the roadmap loses its 'now' rows; chat turns get ids that
two devices can share.
A database as the previous build left it, including the state an earlier
sync could produce: two units both marked 'now'. */
import { describe, it, expect, beforeEach, afterEach } from "vitest";
import { SqliteWasmDb } from "@app/db/sqlite-wasm-core.js";
import { migrate } from "@app/db/migrate.js";
import { readProgress } from "@app/domain/progress.js";
import type { Db } from "@app/db/types.js";
let db: Db;
beforeEach(async () => {
db = await SqliteWasmDb.open({ memory: true });
await migrate(db, 7);
await db.exec(`
INSERT INTO progress (unit_id, state, confidence, updated_at) VALUES
('1.1', 'done', 87, 100),
('1.2', 'now', 40, 300),
('1.3', 'now', 10, 200),
('1.4', 'todo', 0, 0);
INSERT INTO chat (id, role, body, created_at, updated_at) VALUES
(1, 'user', 'Start unit 1.1.', 0, 0),
(2, 'assistant', 'first', 0, 0),
(10, 'assistant', 'tenth', 0, 0),
(11, 'user', 'later', 500, 500);
INSERT INTO tombstone (tbl, pk, updated_at) VALUES ('chat', '9', 400);
`);
await migrate(db);
});
afterEach(async () => {
await db.close();
});
describe("migration 8", () => {
it("keeps what is true of each unit, and nothing about being current", async () => {
expect(await db.all("SELECT unit_id, done, confidence, updated_at FROM progress ORDER BY unit_id")).toEqual([
{ unit_id: "1.1", done: 1, confidence: 87, updated_at: 100 },
{ unit_id: "1.2", done: 0, confidence: 40, updated_at: 300 },
{ unit_id: "1.3", done: 0, confidence: 10, updated_at: 200 },
{ unit_id: "1.4", done: 0, confidence: 0, updated_at: 0 },
]);
});
it("puts him where he most recently was, as exactly as new as that was", async () => {
expect(await db.get("SELECT v, updated_at FROM meta WHERE k = 'road.unit'")).toEqual({
v: "1.2",
updated_at: 300,
});
expect((await readProgress(db)).current).toBe("1.2");
});
it("gives every turn a text id and keeps the transcript in the order it was written", async () => {
const turns = await db.all<{ id: string; body: string }>("SELECT id, body FROM chat ORDER BY created_at, id");
expect(turns.map((t) => t.body)).toEqual(["Start unit 1.1.", "first", "tenth", "later"]);
for (const t of turns) expect(t.id).toMatch(/^legacy:[0-9a-f-]{36}:\d{10}$/);
});
it("renames a chat tombstone the same way", async () => {
const device = (await db.get<{ v: string }>("SELECT v FROM meta WHERE k = 'sync.device'"))!.v;
expect(await db.all("SELECT pk, updated_at FROM tombstone WHERE tbl = 'chat'")).toEqual([
{ pk: `legacy:${device}:0000000009`, updated_at: 400 },
]);
});
it("names this install without stamping it", async () => {
expect(await db.get("SELECT updated_at FROM meta WHERE k = 'sync.device'")).toEqual({ updated_at: 0 });
});
it("creates the learner-model tables empty", async () => {
for (const tbl of ["evidence", "confusion", "phase_ledger"]) {
expect(await db.get(`SELECT count(*) AS n FROM ${tbl}`), tbl).toEqual({ n: 0 });
}
});
});
describe("the new roadmap model", () => {
it("does not un-finish a unit that is revisited", async () => {
const { goToUnit } = await import("@app/domain/progress.js");
await goToUnit(db, await readProgress(db), "1.1");
const p = await readProgress(db);
expect(p.current).toBe("1.1");
expect(p.done["1.1"]).toBe(true);
});
it("finishes the current unit and moves on in one step", async () => {
const { advanceUnit } = await import("@app/domain/progress.js");
const next = await advanceUnit(db, await readProgress(db));
const p = await readProgress(db);
expect(next).toBe("1.3");
expect(p.current).toBe("1.3");
expect(p.done["1.2"]).toBe(true);
});
});