# Checkpoints Grid Row Implementation Plan

> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.

**Goal:** Move the Checkpoints section into the Identity & Artifact config grid as an in-grid row, localize the Deployed-column sub-line, and remove the now-redundant History disclosure from the Deployment tab.

**Architecture:** `CheckpointsTable` is rewritten to return a React.Fragment whose children become direct grid cells inside `IdentitySection`'s `.configGrid`. Label + trigger occupy one grid row; when opened, a second grid row spans both columns for the full-width table. `IdentitySection` gains a `checkpointsSlot` prop (distinct from `children`, which continues to host the portal-rendered drawer). The Deployed cell's ISO sub-line is replaced by `new Date(iso).toLocaleString()` inline. `HistoryDisclosure` is deleted — the checkpoints table + drawer now cover its job.

**Tech Stack:** React 18 + TypeScript, CSS modules, Vitest + React Testing Library.

**Spec:** `docs/superpowers/specs/2026-04-23-checkpoints-grid-row-design.md`

---

## Files touched (summary)

| Path | Change |
|------|--------|
| `ui/src/pages/AppsTab/AppDeploymentPage/IdentitySection.tsx` | Add `checkpointsSlot?: ReactNode` prop; render inside `.configGrid` after the JAR row |
| `ui/src/pages/AppsTab/AppDeploymentPage/CheckpointsTable.tsx` | Rewrite as React.Fragment (label span + trigger cell + optional full-width row); swap ISO sub-line for `toLocaleString()` |
| `ui/src/pages/AppsTab/AppDeploymentPage/CheckpointsTable.test.tsx` | Update `expand()` helper (button name) + add locale sub-line assertion |
| `ui/src/pages/AppsTab/AppDeploymentPage/AppDeploymentPage.module.css` | Add `.checkpointsTriggerCell`, `.checkpointsTrigger`, `.checkpointsTableFullRow`; remove obsolete classes |
| `ui/src/pages/AppsTab/AppDeploymentPage/index.tsx` | Route `CheckpointsTable` via `checkpointsSlot`; drawer stays in `children` |
| `ui/src/pages/AppsTab/AppDeploymentPage/DeploymentTab/DeploymentTab.tsx` | Remove `HistoryDisclosure` import + render |
| `ui/src/pages/AppsTab/AppDeploymentPage/DeploymentTab/HistoryDisclosure.tsx` | **Delete** |

---

## Commands — run from `ui/`

- **Test one file:** `npx vitest run <relative-path>`
- **All tests:** `npx vitest run`
- **Typecheck:** `npm run typecheck`

---

## Task 1: `IdentitySection` accepts `checkpointsSlot`

**Why:** Give the parent page a way to inject the checkpoints row *inside* the grid, separate from `children` (which still hosts the drawer portal).

**Files:**
- Modify: `ui/src/pages/AppsTab/AppDeploymentPage/IdentitySection.tsx`

- [ ] **Step 1.1: Add the prop to the interface**

Open `ui/src/pages/AppsTab/AppDeploymentPage/IdentitySection.tsx`. Find `IdentitySectionProps` (around line 18-29):

```tsx
interface IdentitySectionProps {
  mode: 'net-new' | 'deployed';
  environment: Environment;
  app: App | null;
  currentVersion: AppVersion | null;
  name: string;
  onNameChange: (next: string) => void;
  stagedJar: File | null;
  onStagedJarChange: (file: File | null) => void;
  deploying: boolean;
  children?: ReactNode;
}
```

Add the `checkpointsSlot` field:

```tsx
interface IdentitySectionProps {
  mode: 'net-new' | 'deployed';
  environment: Environment;
  app: App | null;
  currentVersion: AppVersion | null;
  name: string;
  onNameChange: (next: string) => void;
  stagedJar: File | null;
  onStagedJarChange: (file: File | null) => void;
  deploying: boolean;
  checkpointsSlot?: ReactNode;
  children?: ReactNode;
}
```

- [ ] **Step 1.2: Destructure `checkpointsSlot` + render inside the grid**

Find the function signature:

```tsx
export function IdentitySection({
  mode, environment, app, currentVersion,
  name, onNameChange, stagedJar, onStagedJarChange, deploying, children,
}: IdentitySectionProps) {
```

Add `checkpointsSlot` to the destructure list:

```tsx
export function IdentitySection({
  mode, environment, app, currentVersion,
  name, onNameChange, stagedJar, onStagedJarChange, deploying,
  checkpointsSlot, children,
}: IdentitySectionProps) {
```

Then find the closing of the Application JAR row, which looks like:

```tsx
        <span className={styles.configLabel}>Application JAR</span>
        <div className={styles.fileRow}>
          <input
            ref={fileInputRef}
            type="file"
            accept=".jar"
            className={styles.visuallyHidden}
            onChange={(e) => onStagedJarChange(e.target.files?.[0] ?? null)}
          />
          <Button
            size="sm"
            variant="secondary"
            type="button"
            onClick={() => fileInputRef.current?.click()}
            disabled={deploying}
          >
            {currentVersion ? 'Change JAR' : 'Select JAR'}
          </Button>
          {stagedJar && (
            <span className={styles.stagedJar}>
              staged: {stagedJar.name} ({formatBytes(stagedJar.size)})
            </span>
          )}
        </div>
      </div>
      {children}
    </div>
  );
}
```

Change the closing to render `checkpointsSlot` INSIDE the grid, just before `</div>` that closes `.configGrid`:

```tsx
        <span className={styles.configLabel}>Application JAR</span>
        <div className={styles.fileRow}>
          <input
            ref={fileInputRef}
            type="file"
            accept=".jar"
            className={styles.visuallyHidden}
            onChange={(e) => onStagedJarChange(e.target.files?.[0] ?? null)}
          />
          <Button
            size="sm"
            variant="secondary"
            type="button"
            onClick={() => fileInputRef.current?.click()}
            disabled={deploying}
          >
            {currentVersion ? 'Change JAR' : 'Select JAR'}
          </Button>
          {stagedJar && (
            <span className={styles.stagedJar}>
              staged: {stagedJar.name} ({formatBytes(stagedJar.size)})
            </span>
          )}
        </div>

        {checkpointsSlot}
      </div>
      {children}
    </div>
  );
}
```

`checkpointsSlot` is expected to be a React.Fragment whose inner children are grid-direct cells.

- [ ] **Step 1.3: Typecheck**

Run (from `ui/`): `npm run typecheck`
Expected: PASS. (Call sites don't pass `checkpointsSlot` yet — that's fine because the prop is optional.)

- [ ] **Step 1.4: Commit**

```bash
git add ui/src/pages/AppsTab/AppDeploymentPage/IdentitySection.tsx
git commit -m "feat(ui): IdentitySection accepts checkpointsSlot rendered inside configGrid"
```

---

## Task 2: Rewrite `CheckpointsTable` as grid-fragment + locale sub-line

**Why:** The table must emit grid-ready children (label + trigger cell + optional full-width row), drop its own wrapping `<div>`, and localize the Deployed sub-line.

**Files:**
- Modify: `ui/src/pages/AppsTab/AppDeploymentPage/CheckpointsTable.tsx`

- [ ] **Step 2.1: Replace the full file contents**

Replace the entire contents of `ui/src/pages/AppsTab/AppDeploymentPage/CheckpointsTable.tsx` with:

```tsx
import { useState } from 'react';
import { Badge } from '@cameleer/design-system';
import type { Deployment, AppVersion } from '../../../api/queries/admin/apps';
import { timeAgo } from '../../../utils/format-utils';
import styles from './AppDeploymentPage.module.css';

const FALLBACK_CAP = 10;

interface CheckpointsTableProps {
  deployments: Deployment[];
  versions: AppVersion[];
  currentDeploymentId: string | null;
  jarRetentionCount: number | null;
  onSelect: (deploymentId: string) => void;
}

export function CheckpointsTable({
  deployments,
  versions,
  currentDeploymentId,
  jarRetentionCount,
  onSelect,
}: CheckpointsTableProps) {
  const [expanded, setExpanded] = useState(false);
  const [open, setOpen] = useState(false);
  const versionMap = new Map(versions.map((v) => [v.id, v]));

  const checkpoints = deployments
    .filter((d) => d.deployedConfigSnapshot && d.id !== currentDeploymentId)
    .sort((a, b) => (b.deployedAt ?? '').localeCompare(a.deployedAt ?? ''));

  if (checkpoints.length === 0) {
    return null;
  }

  const cap = jarRetentionCount && jarRetentionCount > 0 ? jarRetentionCount : FALLBACK_CAP;
  const visible = expanded ? checkpoints : checkpoints.slice(0, cap);
  const hidden = checkpoints.length - visible.length;

  return (
    <>
      <span className={styles.configLabel}>Checkpoints</span>
      <div className={styles.checkpointsTriggerCell}>
        <button
          type="button"
          className={styles.checkpointsTrigger}
          onClick={() => setOpen((v) => !v)}
          aria-expanded={open}
        >
          <span className={styles.checkpointsChevron}>{open ? '\u25BE' : '\u25B8'}</span>
          {open ? 'Collapse' : 'Expand'} ({checkpoints.length})
        </button>
      </div>
      {open && (
        <div className={styles.checkpointsTableFullRow}>
          <div className={styles.checkpointsTable}>
            <table>
              <thead>
                <tr>
                  <th>Version</th>
                  <th>JAR</th>
                  <th>Deployed by</th>
                  <th>Deployed</th>
                  <th>Strategy</th>
                  <th>Outcome</th>
                  <th aria-label="open"></th>
                </tr>
              </thead>
              <tbody>
                {visible.map((d) => {
                  const v = versionMap.get(d.appVersionId);
                  const archived = !v;
                  const strategyLabel =
                    d.deploymentStrategy === 'BLUE_GREEN' ? 'blue/green' : 'rolling';
                  return (
                    <tr
                      key={d.id}
                      className={archived ? styles.checkpointArchived : undefined}
                      onClick={() => onSelect(d.id)}
                    >
                      <td>
                        <Badge label={v ? `v${v.version}` : '?'} color="auto" />
                      </td>
                      <td className={styles.jarCell}>
                        {v ? (
                          <span className={styles.jarName}>{v.jarFilename}</span>
                        ) : (
                          <>
                            <span className={styles.jarStrike}>JAR pruned</span>
                            <div className={styles.archivedHint}>archived — JAR pruned</div>
                          </>
                        )}
                      </td>
                      <td>
                        {d.createdBy ?? <span className={styles.muted}>—</span>}
                      </td>
                      <td>
                        {d.deployedAt && timeAgo(d.deployedAt)}
                        <div className={styles.isoSubline}>
                          {d.deployedAt && new Date(d.deployedAt).toLocaleString()}
                        </div>
                      </td>
                      <td>
                        <span className={styles.strategyPill}>{strategyLabel}</span>
                      </td>
                      <td>
                        <span
                          className={`${styles.outcomePill} ${styles[`outcome-${d.status}` as keyof typeof styles] || ''}`}
                        >
                          {d.status}
                        </span>
                      </td>
                      <td className={styles.chevron}>›</td>
                    </tr>
                  );
                })}
              </tbody>
            </table>
            {hidden > 0 && !expanded && (
              <button
                type="button"
                className={styles.showOlderBtn}
                onClick={() => setExpanded(true)}
              >
                Show older ({hidden}) — archived, postmortem only
              </button>
            )}
          </div>
        </div>
      )}
    </>
  );
}
```

Key points:
- Returns `<>...</>` (React.Fragment). Its children become direct children of the parent `.configGrid`.
- Trigger button text: `Expand (N)` when closed, `Collapse (N)` when open.
- `.checkpointsTableFullRow` wraps the inner `.checkpointsTable` so the full-width row owns the grid span.
- The Deployed sub-line uses `new Date(d.deployedAt).toLocaleString()` instead of the raw ISO.
- The "Show older" button sits inside the full-width row (unchanged behavior).

- [ ] **Step 2.2: Typecheck**

Run: `npm run typecheck`
Expected: PASS (no callers pass new props; the component's signature is unchanged).

Note: tests will now FAIL until Task 3 updates them — this is expected. Do not run tests here.

- [ ] **Step 2.3: Commit**

```bash
git add ui/src/pages/AppsTab/AppDeploymentPage/CheckpointsTable.tsx
git commit -m "feat(ui): CheckpointsTable emits grid fragment + locale sub-line"
```

---

## Task 3: Update `CheckpointsTable.test.tsx`

**Why:** The trigger button's accessible name changed from `/checkpoints \(1\)/i` to `/expand|collapse/i`. Also add a locale sub-line assertion.

**Files:**
- Modify: `ui/src/pages/AppsTab/AppDeploymentPage/CheckpointsTable.test.tsx`

- [ ] **Step 3.1: Replace the full test file**

Replace the entire contents of `ui/src/pages/AppsTab/AppDeploymentPage/CheckpointsTable.test.tsx` with:

```tsx
import { describe, it, expect, vi } from 'vitest';
import { render, screen, fireEvent } from '@testing-library/react';
import { ThemeProvider } from '@cameleer/design-system';
import type { ReactNode } from 'react';
import { CheckpointsTable } from './CheckpointsTable';
import type { Deployment, AppVersion } from '../../../api/queries/admin/apps';

function wrap(ui: ReactNode) {
  return render(<ThemeProvider>{ui}</ThemeProvider>);
}

const v6: AppVersion = {
  id: 'v6id', appId: 'a', version: 6, jarPath: '/j', jarChecksum: 'c',
  jarFilename: 'my-app-1.2.3.jar', jarSizeBytes: 1, detectedRuntimeType: null,
  detectedMainClass: null, uploadedAt: '2026-04-23T10:00:00Z',
};

const stoppedDep: Deployment = {
  id: 'd1', appId: 'a', appVersionId: 'v6id', environmentId: 'e',
  status: 'STOPPED', targetState: 'STOPPED', deploymentStrategy: 'BLUE_GREEN',
  replicaStates: [{ index: 0, containerId: 'c', containerName: 'n', status: 'STOPPED' }],
  deployStage: null, containerId: null, containerName: null, errorMessage: null,
  deployedAt: '2026-04-23T10:35:00Z', stoppedAt: '2026-04-23T10:52:00Z',
  createdAt: '2026-04-23T10:35:00Z', createdBy: 'alice',
  deployedConfigSnapshot: { jarVersionId: 'v6id', agentConfig: null, containerConfig: {}, sensitiveKeys: null },
};

function expand() {
  fireEvent.click(screen.getByRole('button', { name: /expand|collapse/i }));
}

describe('CheckpointsTable', () => {
  it('defaults to collapsed — label + trigger visible, rows hidden', () => {
    wrap(<CheckpointsTable deployments={[stoppedDep]} versions={[v6]}
      currentDeploymentId={null} jarRetentionCount={5} onSelect={() => {}} />);
    expect(screen.getByText('Checkpoints')).toBeInTheDocument();
    expect(screen.getByRole('button', { name: /expand \(1\)/i })).toBeInTheDocument();
    expect(screen.queryByText('v6')).toBeNull();
    expect(screen.queryByText('my-app-1.2.3.jar')).toBeNull();
  });

  it('clicking trigger expands to show rows; label flips to Collapse', () => {
    wrap(<CheckpointsTable deployments={[stoppedDep]} versions={[v6]}
      currentDeploymentId={null} jarRetentionCount={5} onSelect={() => {}} />);
    expand();
    expect(screen.getByText('v6')).toBeInTheDocument();
    expect(screen.getByText('my-app-1.2.3.jar')).toBeInTheDocument();
    expect(screen.getByText('alice')).toBeInTheDocument();
    expect(screen.getByRole('button', { name: /collapse \(1\)/i })).toBeInTheDocument();
  });

  it('row click invokes onSelect with deploymentId', () => {
    const onSelect = vi.fn();
    wrap(<CheckpointsTable deployments={[stoppedDep]} versions={[v6]}
      currentDeploymentId={null} jarRetentionCount={5} onSelect={onSelect} />);
    expand();
    fireEvent.click(screen.getByText('v6').closest('tr')!);
    expect(onSelect).toHaveBeenCalledWith('d1');
  });

  it('renders em-dash for null createdBy', () => {
    const noActor = { ...stoppedDep, createdBy: null };
    wrap(<CheckpointsTable deployments={[noActor]} versions={[v6]}
      currentDeploymentId={null} jarRetentionCount={5} onSelect={() => {}} />);
    expand();
    expect(screen.getByText('—')).toBeInTheDocument();
  });

  it('marks pruned-JAR rows as archived', () => {
    const pruned = { ...stoppedDep, appVersionId: 'unknown' };
    wrap(<CheckpointsTable deployments={[pruned]} versions={[]}
      currentDeploymentId={null} jarRetentionCount={5} onSelect={() => {}} />);
    expand();
    expect(screen.getByText(/archived/i)).toBeInTheDocument();
  });

  it('renders nothing when there are no checkpoints', () => {
    const { container } = wrap(<CheckpointsTable deployments={[stoppedDep]} versions={[v6]}
      currentDeploymentId="d1" jarRetentionCount={5} onSelect={() => {}} />);
    expect(container).toBeEmptyDOMElement();
  });

  it('caps visible rows at jarRetentionCount and shows expander', () => {
    const many: Deployment[] = Array.from({ length: 10 }, (_, i) => ({
      ...stoppedDep, id: `d${i}`, deployedAt: `2026-04-23T10:${String(10 + i).padStart(2, '0')}:00Z`,
    }));
    wrap(<CheckpointsTable deployments={many} versions={[v6]}
      currentDeploymentId={null} jarRetentionCount={3} onSelect={() => {}} />);
    expand();
    expect(screen.getAllByRole('row').length).toBeLessThanOrEqual(4);
    expect(screen.getByText(/show older \(7\)/i)).toBeInTheDocument();
  });

  it('shows all rows when jarRetentionCount >= total', () => {
    wrap(<CheckpointsTable deployments={[stoppedDep]} versions={[v6]}
      currentDeploymentId={null} jarRetentionCount={10} onSelect={() => {}} />);
    expand();
    expect(screen.queryByText(/show older/i)).toBeNull();
  });

  it('falls back to default cap of 10 when jarRetentionCount is 0 or null', () => {
    const fifteen: Deployment[] = Array.from({ length: 15 }, (_, i) => ({
      ...stoppedDep, id: `d${i}`, deployedAt: `2026-04-23T10:${String(10 + i).padStart(2, '0')}:00Z`,
    }));
    wrap(<CheckpointsTable deployments={fifteen} versions={[v6]}
      currentDeploymentId={null} jarRetentionCount={null} onSelect={() => {}} />);
    expand();
    expect(screen.getByText(/show older \(5\)/i)).toBeInTheDocument();
  });

  it('Deployed sub-line is locale-formatted (not the raw ISO)', () => {
    wrap(<CheckpointsTable deployments={[stoppedDep]} versions={[v6]}
      currentDeploymentId={null} jarRetentionCount={5} onSelect={() => {}} />);
    expand();
    // Raw ISO would contain 'T' and end in 'Z' — localized form must not.
    const raw = '2026-04-23T10:35:00Z';
    expect(screen.queryByText(raw)).toBeNull();
    // The actual sub-line must exist as SOME locale-rendered string near the row.
    // Use the createdBy cell as an anchor and walk to the sibling Deployed cell.
    const row = screen.getByText('alice').closest('tr')!;
    const cells = row.querySelectorAll('td');
    // Column order: Version, JAR, Deployed by, Deployed, Strategy, Outcome, chevron
    const deployedCell = cells[3];
    expect(deployedCell).toBeDefined();
    const text = deployedCell.textContent ?? '';
    expect(text).not.toContain('T10:35');
    expect(text).not.toContain('Z');
    expect(text.length).toBeGreaterThan(0);
  });
});
```

Key changes:
- `expand()` now targets `/expand|collapse/i`.
- The default-collapsed test checks for `/expand \(1\)/i` (trigger shows `Expand (1)` when closed).
- A new post-expand assertion on `/collapse \(1\)/i` confirms the label flip.
- One new test: `Deployed sub-line is locale-formatted (not the raw ISO)` — asserts neither `'T10:35'` nor `'Z'` appears in the Deployed cell's text content, and the cell has content. This avoids depending on the CI's locale while still proving the raw-ISO path is gone.

- [ ] **Step 3.2: Run tests — expect pass**

Run: `npx vitest run src/pages/AppsTab/AppDeploymentPage/CheckpointsTable.test.tsx`
Expected: PASS (10 tests).

If a test fails because the `Deployed sub-line is locale-formatted` anchor strategy doesn't find `alice` (e.g. because the parent still wrapped this in a plain `<div>` somewhere), STOP and report — the Task 2 rewrite is wrong.

- [ ] **Step 3.3: Commit**

```bash
git add ui/src/pages/AppsTab/AppDeploymentPage/CheckpointsTable.test.tsx
git commit -m "test(ui): CheckpointsTable covers fragment layout + locale sub-line"
```

---

## Task 4: CSS updates — add new classes, remove obsolete ones

**Why:** Support the in-grid layout; clean up dead CSS from the retired row-list view and `HistoryDisclosure`.

**Files:**
- Modify: `ui/src/pages/AppsTab/AppDeploymentPage/AppDeploymentPage.module.css`

- [ ] **Step 4.1: Add the three new classes**

Open `ui/src/pages/AppsTab/AppDeploymentPage/AppDeploymentPage.module.css`. Append at the end of the file (after all existing rules):

```css
/* Checkpoints row — lives inside .configGrid */
.checkpointsTriggerCell {
  display: flex;
  align-items: center;
}

.checkpointsTrigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  padding: 0;
  color: var(--text-primary);
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.checkpointsTrigger:hover {
  color: var(--amber);
}

.checkpointsTableFullRow {
  grid-column: 1 / -1;
  margin-top: 4px;
}
```

- [ ] **Step 4.2: Remove the obsolete `.checkpointsSection` / `.checkpointsHeader` / `.checkpointsCount` block**

Find and delete this block (currently near the bottom, added in a prior task):

```css
/* Collapsible Checkpoints header */
.checkpointsSection {
  display: flex;
  flex-direction: column;
}

.checkpointsHeader {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  padding: 8px 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  text-align: left;
}

.checkpointsHeader:hover {
  color: var(--amber);
}

.checkpointsChevron {
  color: var(--text-muted);
  font-size: 11px;
  width: 12px;
  text-align: center;
}

.checkpointsCount {
  color: var(--text-muted);
  font-weight: 400;
}
```

**Important:** After deleting that block, re-add `.checkpointsChevron` (still used by the trigger button) as a standalone rule at the end of the file:

```css
.checkpointsChevron {
  color: var(--text-muted);
  font-size: 11px;
  width: 12px;
  text-align: center;
}
```

- [ ] **Step 4.3: Remove retired row-list + history classes**

Still in the same file, find and delete these rules (left over from the retired `Checkpoints.tsx` row-list and the soon-to-be-deleted `HistoryDisclosure`):

```css
.checkpointsRow {
  margin-top: 8px;
}

.disclosureToggle {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 13px;
  padding: 4px 0;
}

.checkpointList {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 6px 0 0 12px;
}

.checkpointRow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.checkpointMeta {
  color: var(--text-muted);
}

.checkpointArchived {
  color: var(--warning);
  font-size: 12px;
}
```

**Do NOT delete** `.checkpointsTable tr.checkpointArchived { opacity: 0.55; }` — that variant IS still used by the table body.

Also find and delete:

```css
/* HistoryDisclosure */
.historyRow { margin-top: 16px; }
```

- [ ] **Step 4.4: Typecheck**

Run: `npm run typecheck`
Expected: PASS.

- [ ] **Step 4.5: Run table tests to confirm no missing-class regressions**

Run: `npx vitest run src/pages/AppsTab/AppDeploymentPage/CheckpointsTable.test.tsx`
Expected: PASS (10 tests).

- [ ] **Step 4.6: Commit**

```bash
git add ui/src/pages/AppsTab/AppDeploymentPage/AppDeploymentPage.module.css
git commit -m "refactor(ui): checkpoints in-grid styles + drop retired row-list/history CSS"
```

---

## Task 5: Wire `CheckpointsTable` through `checkpointsSlot` in the page

**Why:** Move the render from `children` into the new slot so the table ends up inside the grid; keep the drawer in `children`.

**Files:**
- Modify: `ui/src/pages/AppsTab/AppDeploymentPage/index.tsx`

- [ ] **Step 5.1: Update the `<IdentitySection>` render**

Open `ui/src/pages/AppsTab/AppDeploymentPage/index.tsx`. Find the `<IdentitySection>` JSX (around lines 437-474):

```tsx
      <IdentitySection
        mode={mode}
        environment={env}
        app={app}
        currentVersion={currentVersion}
        name={name}
        onNameChange={setName}
        stagedJar={stagedJar}
        onStagedJarChange={setStagedJar}
        deploying={deploymentInProgress}
      >
        {app && (
          <>
            <CheckpointsTable
              deployments={deployments}
              versions={versions}
              currentDeploymentId={currentDeployment?.id ?? null}
              jarRetentionCount={jarRetentionCount}
              onSelect={setSelectedCheckpointId}
            />
            {selectedDep && (
              <CheckpointDetailDrawer
                open
                onClose={() => setSelectedCheckpointId(null)}
                deployment={selectedDep}
                version={selectedDepVersion}
                appSlug={app.slug}
                envSlug={selectedEnv ?? ''}
                currentForm={form}
                onRestore={(deploymentId) => {
                  handleRestore(deploymentId);
                  setSelectedCheckpointId(null);
                }}
              />
            )}
          </>
        )}
      </IdentitySection>
```

Replace with:

```tsx
      <IdentitySection
        mode={mode}
        environment={env}
        app={app}
        currentVersion={currentVersion}
        name={name}
        onNameChange={setName}
        stagedJar={stagedJar}
        onStagedJarChange={setStagedJar}
        deploying={deploymentInProgress}
        checkpointsSlot={
          app ? (
            <CheckpointsTable
              deployments={deployments}
              versions={versions}
              currentDeploymentId={currentDeployment?.id ?? null}
              jarRetentionCount={jarRetentionCount}
              onSelect={setSelectedCheckpointId}
            />
          ) : undefined
        }
      >
        {app && selectedDep && (
          <CheckpointDetailDrawer
            open
            onClose={() => setSelectedCheckpointId(null)}
            deployment={selectedDep}
            version={selectedDepVersion}
            appSlug={app.slug}
            envSlug={selectedEnv ?? ''}
            currentForm={form}
            onRestore={(deploymentId) => {
              handleRestore(deploymentId);
              setSelectedCheckpointId(null);
            }}
          />
        )}
      </IdentitySection>
```

Key difference: `<CheckpointsTable>` moves into the new `checkpointsSlot` prop; the drawer stays as the only `children`.

- [ ] **Step 5.2: Typecheck**

Run: `npm run typecheck`
Expected: PASS.

- [ ] **Step 5.3: Run all deployment page tests**

Run: `npx vitest run src/pages/AppsTab/AppDeploymentPage`
Expected: PASS.

- [ ] **Step 5.4: Commit**

```bash
git add ui/src/pages/AppsTab/AppDeploymentPage/index.tsx
git commit -m "refactor(ui): route CheckpointsTable via IdentitySection.checkpointsSlot"
```

---

## Task 6: Remove `HistoryDisclosure` from the Deployment tab

**Why:** The checkpoints table + drawer now cover the same information; History is dead weight.

**Files:**
- Modify: `ui/src/pages/AppsTab/AppDeploymentPage/DeploymentTab/DeploymentTab.tsx`
- Delete: `ui/src/pages/AppsTab/AppDeploymentPage/DeploymentTab/HistoryDisclosure.tsx`

- [ ] **Step 6.1: Remove the import and render from `DeploymentTab.tsx`**

Open `ui/src/pages/AppsTab/AppDeploymentPage/DeploymentTab/DeploymentTab.tsx`. It currently looks like:

```tsx
import type { Deployment, AppVersion } from '../../../../api/queries/admin/apps';
import { DeploymentProgress } from '../../../../components/DeploymentProgress';
import { StartupLogPanel } from '../../../../components/StartupLogPanel';
import { EmptyState } from '@cameleer/design-system';
import { StatusCard } from './StatusCard';
import { HistoryDisclosure } from './HistoryDisclosure';
import styles from '../AppDeploymentPage.module.css';

interface Props {
  deployments: Deployment[];
  versions: AppVersion[];
  appSlug: string;
  envSlug: string;
  externalUrl: string;
}

export function DeploymentTab({ deployments, versions, appSlug, envSlug, externalUrl }: Props) {
  const latest = deployments
    .slice()
    .sort((a, b) => (b.createdAt ?? '').localeCompare(a.createdAt ?? ''))[0] ?? null;

  if (!latest) {
    return <EmptyState title="No deployments yet" description="Save your configuration and click Redeploy to launch." />;
  }

  const version = versions.find((v) => v.id === latest.appVersionId) ?? null;

  return (
    <div className={styles.deploymentTab}>
      <StatusCard
        deployment={latest}
        version={version}
        externalUrl={externalUrl}
      />
      {latest.status === 'STARTING' && (
        <DeploymentProgress currentStage={latest.deployStage} failed={false} />
      )}
      {latest.status === 'FAILED' && (
        <DeploymentProgress currentStage={latest.deployStage} failed />
      )}
      <StartupLogPanel deployment={latest} appSlug={appSlug} envSlug={envSlug}
                       className={styles.logFill} />
      <HistoryDisclosure deployments={deployments} versions={versions}
                         appSlug={appSlug} envSlug={envSlug} />
    </div>
  );
}
```

Replace with:

```tsx
import type { Deployment, AppVersion } from '../../../../api/queries/admin/apps';
import { DeploymentProgress } from '../../../../components/DeploymentProgress';
import { StartupLogPanel } from '../../../../components/StartupLogPanel';
import { EmptyState } from '@cameleer/design-system';
import { StatusCard } from './StatusCard';
import styles from '../AppDeploymentPage.module.css';

interface Props {
  deployments: Deployment[];
  versions: AppVersion[];
  appSlug: string;
  envSlug: string;
  externalUrl: string;
}

export function DeploymentTab({ deployments, versions, appSlug, envSlug, externalUrl }: Props) {
  const latest = deployments
    .slice()
    .sort((a, b) => (b.createdAt ?? '').localeCompare(a.createdAt ?? ''))[0] ?? null;

  if (!latest) {
    return <EmptyState title="No deployments yet" description="Save your configuration and click Redeploy to launch." />;
  }

  const version = versions.find((v) => v.id === latest.appVersionId) ?? null;

  return (
    <div className={styles.deploymentTab}>
      <StatusCard
        deployment={latest}
        version={version}
        externalUrl={externalUrl}
      />
      {latest.status === 'STARTING' && (
        <DeploymentProgress currentStage={latest.deployStage} failed={false} />
      )}
      {latest.status === 'FAILED' && (
        <DeploymentProgress currentStage={latest.deployStage} failed />
      )}
      <StartupLogPanel deployment={latest} appSlug={appSlug} envSlug={envSlug}
                       className={styles.logFill} />
    </div>
  );
}
```

Changes: remove the `import { HistoryDisclosure }` line and the `<HistoryDisclosure ... />` JSX render at the bottom. Note that `versions` is still used (line with `const version = ...`), so keep the `versions` prop in the destructure.

- [ ] **Step 6.2: Delete `HistoryDisclosure.tsx`**

Delete the file:

```bash
rm ui/src/pages/AppsTab/AppDeploymentPage/DeploymentTab/HistoryDisclosure.tsx
```

- [ ] **Step 6.3: Typecheck**

Run: `npm run typecheck`
Expected: PASS.

- [ ] **Step 6.4: Run deployment page tests**

Run: `npx vitest run src/pages/AppsTab/AppDeploymentPage`
Expected: PASS.

- [ ] **Step 6.5: Commit**

```bash
git add ui/src/pages/AppsTab/AppDeploymentPage/DeploymentTab/DeploymentTab.tsx \
        ui/src/pages/AppsTab/AppDeploymentPage/DeploymentTab/HistoryDisclosure.tsx
git commit -m "ui(deploy): remove redundant HistoryDisclosure from Deployment tab"
```

---

## Task 7: Final verification + rules + reindex

**Why:** Confirm the full suite is green; update `.claude/rules/ui.md` so future sessions know Checkpoints lives inside the Identity grid and History is gone.

**Files:**
- Modify: `.claude/rules/ui.md`

- [ ] **Step 7.1: Run the entire UI test suite**

Run (from `ui/`): `npx vitest run`
Expected: PASS.

- [ ] **Step 7.2: Typecheck**

Run: `npm run typecheck`
Expected: PASS.

- [ ] **Step 7.3: Update `.claude/rules/ui.md`**

Open `.claude/rules/ui.md` and locate the Deployments bullet that begins "Checkpoints render as a collapsible `CheckpointsTable`…". Replace the full sentence with:

> "Checkpoints render as a collapsible `CheckpointsTable` (default **collapsed**) **inside the Identity & Artifact `configGrid`** as an in-grid row (`Checkpoints | ▸ Expand (N)`). When expanded, the table spans both grid columns via `grid-column: 1 / -1`. Columns: Version · JAR (filename) · Deployed by · Deployed (relative + user-locale sub-line via `toLocaleString()`) · Strategy · Outcome · ›. Row click opens `CheckpointDetailDrawer`. Drawer tabs are ordered **Config | Logs** with `Config` as the default. Replica filter uses DS `Select`. Restore lives in the drawer footer. Visible row cap = `Environment.jarRetentionCount` (default 10 if 0/null); older rows accessible via 'Show older (N)' expander. Currently-running deployment is excluded — represented separately by `StatusCard`. The empty-checkpoints case returns `null` (no row)."

Then locate the Deployment-tab bullet that starts "Deployment tab: `StatusCard` + `DeploymentProgress` … + `HistoryDisclosure`." and replace with:

> "Deployment tab: `StatusCard` + `DeploymentProgress` (during STARTING / FAILED) + flex-grow `StartupLogPanel` (no fixed maxHeight). Auto-activates when a deploy starts. `HistoryDisclosure` was retired — per-deployment config and logs live in the Checkpoints drawer. `StartupLogPanel` header mirrors the Runtime Application Log pattern: title + live/stopped badge + `N entries` + sort toggle (↑/↓, default **desc**) + refresh icon (`RefreshCw`). Sort drives the backend fetch via `useStartupLogs(…, sort)`. Refresh scrolls to the latest edge (top for desc, bottom for asc). Sort + refresh buttons disable while a refetch is in flight."

- [ ] **Step 7.4: Commit rules update**

```bash
git add .claude/rules/ui.md
git commit -m "docs(rules): checkpoints live inside Identity grid; HistoryDisclosure retired"
```

- [ ] **Step 7.5: Run GitNexus re-index**

Run (from repo root): `npx gitnexus analyze --embeddings`
Expected: Indexed successfully.

- [ ] **Step 7.6: Manual smoke (human-run, report in PR body)**

Start `npm run dev` in `ui/` (backend on :8081). Verify:
- Identity & Artifact section shows `Checkpoints | ▸ Expand (N)` as the last row. Collapsed on load.
- Clicking the trigger reveals the full table spanning both grid columns; button flips to `▾ Collapse (N)`.
- Deployed column shows `5h ago` as primary; sub-line shows a localized date/time (e.g. `4/23/2026, 12:35:00 PM` in `en-US`).
- Click a row → `CheckpointDetailDrawer` opens on Config tab (unchanged).
- App with no checkpoints: no Checkpoints row at all.
- Deployment tab no longer shows the History disclosure below Startup Logs.

---

## Self-review

**Spec coverage:**

- §2.1 Checkpoints row in the grid → Tasks 1, 2, 4, 5 ✓
- §2.2 Deployed locale sub-line → Task 2 (component change) + Task 3 (test) ✓
- §2.3 Remove History → Task 6 ✓
- §3 Page wiring (split slot from children) → Task 5 ✓
- §4 Files list — every file mentioned has a touch task ✓
- §5 Testing — Task 3 updates 9 existing tests + adds the locale assertion ✓
- §6 Non-goals respected: `CheckpointDetailDrawer`, `timeAgo`, drawer layout, other callers of `timeAgo` are untouched ✓

**Placeholder scan:** No "TBD"/"TODO"/"similar to Task N"/"add appropriate X". Every step has either a concrete code block or an exact shell command. Step 3.2's failure path names what would be wrong and says to STOP and report — concrete guidance, not a placeholder.

**Type consistency:**
- `checkpointsSlot?: ReactNode` appears consistently in Task 1 (prop), Task 5 (caller).
- `.checkpointsChevron` is removed as part of a block in Task 4.2 and re-added standalone in the same step — explicit handling, no dangling references. `CheckpointsTable` in Task 2 references it.
- `.checkpointsTriggerCell`, `.checkpointsTrigger`, `.checkpointsTableFullRow` are defined once in Task 4.1 and referenced in Task 2.
- `new Date(iso).toLocaleString()` pattern appears once in Task 2 and is asserted in Task 3.

No gaps or inconsistencies.