Rebuild the shell, add Calendar and Learn, and govern reads

Seven parallel agents and an adversarial verification pass. The three things
worth knowing before reading the diff:

RBAC WAS ALREADY BUILT. docs/build-plan.md marks F2 and F3 outstanding and is
stale — packages/core/src/permissions.ts and lib/mutation.ts shipped long ago.
So this does not rebuild them; it closes the gaps an audit found. The big one
is that reads were entirely ungoverned: every GET was "any authenticated
member", so a junior demand rep and a research contractor could both pull
per-block supplier cost and break-even prices from /api/capacity/margin, and
every contract's negotiated terms. For a company whose margin is the business,
that was the hole that mattered. Adds book:read / economics:read / team:read,
a readGuard middleware, and a `viewer` role below member.

THE BUTTON AND THE 403 DISAGREED — the exact thing F3 said must never happen.
Contracts.tsx never called can() at all, so its save button was always enabled
against a server requiring contract:sign; Capacity.tsx gated commitment
creation on deal:write/demand while the server wanted commitment:write/supply.

POST /api/activities was the one write bypassing executeMutation: no capability
check, and any member could mutate accounts.lastActivityAt as a side effect.
It is now a proper mutation() behind activity:write.

The shell becomes three panes — a collapsible shadcn sidebar with an account
switcher on the Piggy accent, a header with real search, and Piggy docked to
the right, page-aware and persistent across navigation. The phone keeps its
bottom tab bar, which is the thing this product already beat trycompai/crm on,
and gains the sidebar as a sheet.

Calendar is a projection over thirteen dated sources rather than a new table,
because a table would duplicate dates that already live on contracts, deals and
commitments and would drift — and one ledger answering the question is the
whole argument. It surfaces export_authorizations and compliance_artifacts,
which had indexed expires_at columns, schema comments saying they must be
alerted on, and no read endpoint or UI anywhere.

Learn carries two tracks. Concepts are members-only; the platform track can be
opened with a share code by someone with no account. The code mints a scoped
learn-only token and never a Principal — every route here resolves a principal
and then checks capabilities, so a principal-minting code would be one missing
check away from leaking the book. "Only platform-track rows may be code-visible"
is a database CHECK constraint as well as a write-path rule, and a test asserts
a valid learn token still gets 401 on /api/dashboard, /api/accounts and
/api/contracts — the same invariant scripts/deploy.sh refuses to ship without.

CD becomes tag-to-ship. CI publishes an image to the Gitea registry on a
release-* tag and cloud-2 pulls it, so no credential on the shared runner can
execute anything on production — by construction rather than by policy. Both
halves of deploy.sh's original rule survive: nothing on the runner reaches the
host, and a human still decides when it ships. deploy.sh gains a rollback and a
public-origin check, and PIG_IMAGE now reaches compose through `sudo env`,
without which sudo's env_reset silently resolved every release to pig:local.

Tests 141 -> 261.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

packages/core/test/calendar.test.ts

@@ -0,0 +1,245 @@
+/**
+ * Tests for quarter arithmetic and the projected event shape.
+ *
+ * The calendar has no storage of its own, so there is nothing to inspect when
+ * a bucket is wrong — a deal simply appears under the wrong heading and the
+ * quarterly number is quietly off. The cases below therefore pin the two
+ * decisions that a plausible-but-wrong implementation gets backwards: which
+ * calendar year names a fiscal year, and whether the upper bound is inclusive.
+ */
+import { strict as assert } from 'node:assert';
+import { describe, it } from 'node:test';
+import {
+  CALENDAR_EVENT_KINDS,
+  calendarEventId,
+  completableSpanState,
+  eventState,
+  isCalendarEventKind,
+  isValidTimeZone,
+  parseQuarter,
+  quarterBounds,
+  quarterBoundsFor,
+  quarterOf,
+  spanState,
+} from '../src/calendar';
+
+describe('quarterOf', () => {
+  it('buckets calendar quarters', () => {
+    assert.equal(quarterOf(new Date('2026-01-01T00:00:00.000Z')), '2026-Q1');
+    assert.equal(quarterOf(new Date('2026-08-13T12:00:00.000Z')), '2026-Q3');
+    assert.equal(quarterOf(new Date('2026-12-31T23:59:59.999Z')), '2026-Q4');
+  });
+
+  it('names a fiscal year for the calendar year it ENDS in', () => {
+    // The decision. A fiscal year starting April 2026 runs to March 2027 and
+    // is FY2027 — the convention used by the companies whose paper PIG holds.
+    // Naming it FY2026 instead is the plausible-but-wrong version: it puts
+    // every April-to-December deal a year early, and the error is invisible
+    // because the quarter number is right.
+    assert.equal(quarterOf(new Date('2026-04-01T00:00:00.000Z'), 3), '2027-Q1');
+    assert.equal(quarterOf(new Date('2026-08-13T00:00:00.000Z'), 3), '2027-Q2');
+    assert.equal(quarterOf(new Date('2027-03-31T23:00:00.000Z'), 3), '2027-Q4');
+    // The next fiscal year begins the following day, and the label advances.
+    assert.equal(quarterOf(new Date('2027-04-01T00:00:00.000Z'), 3), '2028-Q1');
+  });
+
+  it('handles the year boundary under an October fiscal start', () => {
+    // A US-federal-style year: October 2026 is already FY2027 Q1, while
+    // September 2026 is still FY2026 Q4. A naive implementation that derives
+    // the label from the calendar year alone puts these in the same year.
+    assert.equal(quarterOf(new Date('2026-09-30T23:59:59.999Z'), 9), '2026-Q4');
+    assert.equal(quarterOf(new Date('2026-10-01T00:00:00.000Z'), 9), '2027-Q1');
+    assert.equal(quarterOf(new Date('2026-12-31T23:59:59.999Z'), 9), '2027-Q1');
+    assert.equal(quarterOf(new Date('2027-01-01T00:00:00.000Z'), 9), '2027-Q2');
+  });
+
+  it('buckets by the reader time zone, not by UTC', () => {
+    // Every temporal column in PIG is `timestamp with time zone`, so a
+    // quarter boundary is a local-midnight question. This instant is already
+    // Q1 in London and still Q4 in New York; bucketing everything in UTC
+    // silently reports one of the two readers a wrong quarterly total.
+    const newYearInLondon = new Date('2027-01-01T00:30:00.000Z');
+    assert.equal(quarterOf(newYearInLondon, 0, 'Europe/London'), '2027-Q1');
+    assert.equal(quarterOf(newYearInLondon, 0, 'America/New_York'), '2026-Q4');
+  });
+
+  it('falls back to UTC rather than throwing on an unusable zone', () => {
+    // `users.timezone` is free text and nothing validates it on write.
+    assert.equal(quarterOf(new Date('2026-08-13T12:00:00.000Z'), 0, 'Mars/Olympus'), '2026-Q3');
+  });
+
+  it('rejects a fiscal start that is not a month index', () => {
+    assert.throws(() => quarterOf(new Date(), 12), RangeError);
+    assert.throws(() => quarterOf(new Date(), -1), RangeError);
+  });
+});
+
+describe('quarterBounds', () => {
+  it('is half-open, so consecutive quarters tile without overlapping', () => {
+    // An inclusive upper bound files a contract expiring at exactly midnight
+    // on 1 October into both Q3 and Q4, and adding the two quarters together
+    // then counts its value twice.
+    const q3 = quarterBounds(2026, 3);
+    const q4 = quarterBounds(2026, 4);
+    assert.equal(q3.from.toISOString(), '2026-07-01T00:00:00.000Z');
+    assert.equal(q3.to.toISOString(), '2026-10-01T00:00:00.000Z');
+    assert.equal(q3.to.getTime(), q4.from.getTime());
+    assert.equal(quarterOf(q3.to), '2026-Q4', 'the upper bound belongs to the NEXT quarter');
+  });
+
+  it('rolls into the following calendar year for a fiscal offset', () => {
+    // FY2027 under an April start began in April 2026, so its Q4 is the first
+    // calendar quarter of 2027. Reading `year` as the starting calendar year
+    // puts this a whole year out.
+    const q1 = quarterBounds(2027, 1, 3);
+    const q4 = quarterBounds(2027, 4, 3);
+    assert.equal(q1.from.toISOString(), '2026-04-01T00:00:00.000Z');
+    assert.equal(q4.from.toISOString(), '2027-01-01T00:00:00.000Z');
+    assert.equal(q4.to.toISOString(), '2027-04-01T00:00:00.000Z');
+    assert.equal(q4.quarter, '2027-Q4');
+  });
+
+  it('round-trips with quarterOf at both ends of every fiscal offset', () => {
+    for (const fiscalStart of [0, 1, 3, 6, 9, 11]) {
+      for (const quarter of [1, 2, 3, 4] as const) {
+        const bounds = quarterBounds(2027, quarter, fiscalStart);
+        assert.equal(quarterOf(bounds.from, fiscalStart), bounds.quarter);
+        assert.equal(
+          quarterOf(new Date(bounds.to.getTime() - 1), fiscalStart),
+          bounds.quarter,
+          `last instant of ${bounds.quarter} at fiscal start ${fiscalStart}`,
+        );
+      }
+    }
+  });
+
+  it('anchors on local midnight, not on UTC midnight', () => {
+    // New York is five hours behind in January, so its Q1 opens at 05:00Z.
+    const q1 = quarterBounds(2026, 1, 0, 'America/New_York');
+    assert.equal(q1.from.toISOString(), '2026-01-01T05:00:00.000Z');
+  });
+
+  it('survives a quarter that opens across a daylight-saving transition', () => {
+    // Sydney's Q4 opens on the morning clocks go forward; a fixed-offset
+    // implementation lands an hour out and mis-buckets everything on 1 October.
+    const q4 = quarterBounds(2026, 4, 0, 'Australia/Sydney');
+    assert.equal(quarterOf(q4.from, 0, 'Australia/Sydney'), '2026-Q4');
+    assert.equal(
+      quarterOf(new Date(q4.from.getTime() - 1), 0, 'Australia/Sydney'),
+      '2026-Q3',
+    );
+  });
+
+  it('rejects a quarter outside 1–4', () => {
+    assert.throws(() => quarterBounds(2026, 0 as 1), RangeError);
+    assert.throws(() => quarterBounds(2026, 5 as 1), RangeError);
+  });
+});
+
+describe('quarterBoundsFor and parseQuarter', () => {
+  it('contains the instant it was derived from', () => {
+    const date = new Date('2026-08-13T12:00:00.000Z');
+    const bounds = quarterBoundsFor(date, 3, 'Europe/London');
+    assert.equal(bounds.quarter, '2027-Q2');
+    assert.ok(bounds.from <= date && date < bounds.to);
+  });
+
+  it('rejects a malformed label rather than guessing', () => {
+    assert.deepEqual(parseQuarter('2026-Q3'), { year: 2026, quarter: 3 });
+    assert.equal(parseQuarter('2026-Q5'), null);
+    assert.equal(parseQuarter('26-Q3'), null);
+    assert.equal(parseQuarter('2026Q3'), null);
+  });
+});
+
+describe('event state', () => {
+  const now = new Date('2026-08-13T12:00:00.000Z');
+  const inDays = (days: number) => new Date(now.getTime() + days * 86_400_000);
+
+  it('reads completion from the column, never from the clock', () => {
+    // A renewal notice whose date has passed is overdue, not finished.
+    assert.equal(eventState({ at: inDays(-3), now }), 'overdue');
+    assert.equal(
+      eventState({ at: inDays(-3), now, completedAt: inDays(-4) }),
+      'done',
+      'only a completion timestamp closes an event',
+    );
+  });
+
+  it('separates due from upcoming on the action horizon', () => {
+    assert.equal(eventState({ at: inDays(3), now }), 'due');
+    assert.equal(eventState({ at: inDays(30), now }), 'upcoming');
+  });
+
+  it('judges a span by its end, because a running window is not late', () => {
+    assert.equal(spanState({ startsAt: inDays(-10), endsAt: inDays(10), now }), 'due');
+    assert.equal(spanState({ startsAt: inDays(-30), endsAt: inDays(-1), now }), 'done');
+    assert.equal(spanState({ startsAt: inDays(60), endsAt: inDays(90), now }), 'upcoming');
+  });
+
+  it('never lets a clock close a span that has a completion column', () => {
+    // The defect this pins: a QBR scheduled last week and never held read
+    // `done` under `spanState`, while the same QBR entered with no end time
+    // read `overdue`. Whether a missed human commitment is flagged then
+    // depends on nothing but whether its author typed an end time.
+    const missed = { startsAt: inDays(-30), endsAt: inDays(-1), now };
+    assert.equal(completableSpanState(missed), 'overdue');
+    assert.equal(eventState({ at: missed.startsAt, now }), 'overdue', 'and agrees with a point');
+    assert.equal(completableSpanState({ ...missed, completedAt: inDays(-2) }), 'done');
+    assert.equal(spanState(missed), 'done', 'the windowed reading is still right for windows');
+  });
+
+  it('still reads a running or future completable span from its end and start', () => {
+    assert.equal(
+      completableSpanState({ startsAt: inDays(-10), endsAt: inDays(10), now }),
+      'due',
+    );
+    assert.equal(
+      completableSpanState({ startsAt: inDays(60), endsAt: inDays(90), now }),
+      'upcoming',
+    );
+    assert.equal(
+      completableSpanState({ startsAt: inDays(60), endsAt: inDays(90), now, completedAt: now }),
+      'done',
+      'completion outranks the clock in both directions',
+    );
+  });
+});
+
+describe('time zone validation', () => {
+  it('separates a real zone from a plausible-looking string', () => {
+    // The projection falls back to UTC for a stored zone it cannot use, which
+    // is right for `users.timezone` and wrong for a query parameter: a caller
+    // asking for a zone that does not exist should be told, not quietly
+    // answered in UTC, and the formatter cache is keyed on this string.
+    assert.equal(isValidTimeZone('Europe/London'), true);
+    assert.equal(isValidTimeZone('UTC'), true);
+    assert.equal(isValidTimeZone('Mars/Olympus'), false);
+    assert.equal(isValidTimeZone(''), false);
+  });
+
+  it('does not grow the formatter cache without bound', () => {
+    // A loop over distinct values used to add one entry per value, for the
+    // life of the process. Nothing observable should change from running it.
+    for (let index = 0; index < 2000; index += 1) {
+      quarterOf(new Date('2026-08-13T12:00:00.000Z'), 0, `Junk/Zone${index}`);
+    }
+    assert.equal(
+      quarterOf(new Date('2027-01-01T00:30:00.000Z'), 0, 'America/New_York'),
+      '2026-Q4',
+    );
+  });
+});
+
+describe('event identity', () => {
+  it('is stable without storage, and distinguishes fields on one record', () => {
+    const id = calendarEventId('contract', 'c1', 'expiresAt');
+    assert.equal(id, 'contract:c1:expiresAt');
+    assert.notEqual(id, calendarEventId('contract', 'c1', 'effectiveAt'));
+  });
+
+  it('exposes every kind through the guard', () => {
+    for (const kind of CALENDAR_EVENT_KINDS) assert.ok(isCalendarEventKind(kind));
+    assert.equal(isCalendarEventKind('renewal'), false);
+  });
+});