diff --git a/src/databases/officer_db/src/index.ts b/src/databases/officer_db/src/index.ts
index f99104b0..8c8a9a58 100644
--- a/src/databases/officer_db/src/index.ts
+++ b/src/databases/officer_db/src/index.ts
@@ -280,3 +280,17 @@ export {
   markPushDeviceSeen,
 } from './queries/notify';
 export type { PushDeviceSelect, PushDeviceInsert } from './types';
+
+// App store — what the owner has installed, and whether it should be running.
+export {
+  listSidecarInstalls,
+  getSidecarInstall,
+  beginInstall,
+  recordSteps,
+  markInstalled,
+  markFailed,
+  markBlocked,
+  setEnabled,
+  removeInstall,
+  type SidecarInstall,
+} from './queries/sidecar-installs';
diff --git a/src/databases/officer_db/src/queries/sidecar-installs.ts b/src/databases/officer_db/src/queries/sidecar-installs.ts
new file mode 100644
index 00000000..b08b74b1
--- /dev/null
+++ b/src/databases/officer_db/src/queries/sidecar-installs.ts
@@ -0,0 +1,109 @@
+import { eq } from 'drizzle-orm';
+import { db } from '../db';
+import { sidecarInstalls } from '../schema';
+
+// What the owner has installed from the app store. See ../schema/app-store.ts for why there is no
+// userId and why `installed` and `enabled` are separate.
+
+export type SidecarInstall = typeof sidecarInstalls.$inferSelect;
+
+export async function listSidecarInstalls(): Promise<SidecarInstall[]> {
+  return db.select().from(sidecarInstalls);
+}
+
+export async function getSidecarInstall(sidecarId: string): Promise<SidecarInstall | null> {
+  const [row] = await db.select().from(sidecarInstalls).where(eq(sidecarInstalls.sidecarId, sidecarId));
+  return row ?? null;
+}
+
+/**
+ * Create the row for an install that is about to start, or pick up the one a previous attempt left.
+ *
+ * Returning the existing row rather than replacing it is what makes a retry a RESUME: `completedSteps`
+ * is how the installer knows not to provision a second container, and starting fresh would throw that
+ * away every time someone pressed the button again after a failure.
+ */
+export async function beginInstall(sidecarId: string, mode: string): Promise<SidecarInstall> {
+  const existing = await getSidecarInstall(sidecarId);
+  if (existing) {
+    const [row] = await db
+      .update(sidecarInstalls)
+      // `lastError` cleared on the way in: it describes the PREVIOUS attempt, and leaving it visible
+      // while a new one runs is how a UI ends up showing a stale failure next to a working service.
+      .set({ status: 'installing', mode, lastError: null, updatedAt: new Date() })
+      .where(eq(sidecarInstalls.sidecarId, sidecarId))
+      .returning();
+    return row!;
+  }
+
+  const [row] = await db.insert(sidecarInstalls).values({ sidecarId, mode, status: 'installing' }).returning();
+  return row!;
+}
+
+/** Record progress mid-install, so an interrupted run can be resumed rather than restarted. */
+export async function recordSteps(sidecarId: string, completedSteps: string[], composeDir?: string): Promise<void> {
+  await db
+    .update(sidecarInstalls)
+    .set({ completedSteps, ...(composeDir ? { composeDir } : {}), updatedAt: new Date() })
+    .where(eq(sidecarInstalls.sidecarId, sidecarId));
+}
+
+/** Install finished. `enabled` goes true here because installing a thing is asking for it to run. */
+export async function markInstalled(sidecarId: string, completedSteps: string[]): Promise<void> {
+  await db
+    .update(sidecarInstalls)
+    .set({
+      status: 'installed',
+      enabled: true,
+      completedSteps,
+      lastError: null,
+      installedAt: new Date(),
+      updatedAt: new Date(),
+    })
+    .where(eq(sidecarInstalls.sidecarId, sidecarId));
+}
+
+/**
+ * Install stopped and cannot continue on its own.
+ *
+ * `completedSteps` is still written: what worked stays recorded, so resuming picks up rather than
+ * repeating. A failure that forgot its progress would re-provision on every retry.
+ */
+export async function markFailed(sidecarId: string, completedSteps: string[], error: string): Promise<void> {
+  await db
+    .update(sidecarInstalls)
+    .set({ status: 'failed', completedSteps, lastError: error, updatedAt: new Date() })
+    .where(eq(sidecarInstalls.sidecarId, sidecarId));
+}
+
+/**
+ * Waiting for a human — a token only the service's own UI can mint.
+ *
+ * Deliberately NOT `failed`. The container is up and healthy and everything so far worked; calling it a
+ * failure would make a normal install look broken and invite the user to tear down a working service.
+ * `lastError` carries the instruction instead of an error.
+ */
+export async function markBlocked(sidecarId: string, completedSteps: string[], reason: string): Promise<void> {
+  await db
+    .update(sidecarInstalls)
+    .set({ status: 'blocked', completedSteps, lastError: reason, updatedAt: new Date() })
+    .where(eq(sidecarInstalls.sidecarId, sidecarId));
+}
+
+/** Enable or disable — the process and its container, without touching anything installed. */
+export async function setEnabled(sidecarId: string, enabled: boolean): Promise<void> {
+  await db
+    .update(sidecarInstalls)
+    .set({ enabled, updatedAt: new Date() })
+    .where(eq(sidecarInstalls.sidecarId, sidecarId));
+}
+
+/**
+ * Forget this install.
+ *
+ * Only this row. The sidecar's tables, the service directory and every byte of data under it survive —
+ * see the schema comment. Uninstalling is "stop running this", not "delete my library".
+ */
+export async function removeInstall(sidecarId: string): Promise<void> {
+  await db.delete(sidecarInstalls).where(eq(sidecarInstalls.sidecarId, sidecarId));
+}
diff --git a/src/databases/officer_db/src/schema/index.ts b/src/databases/officer_db/src/schema/index.ts
index 24c46926..c0936bdd 100644
--- a/src/databases/officer_db/src/schema/index.ts
+++ b/src/databases/officer_db/src/schema/index.ts
@@ -1,3 +1,4 @@
+export * from './app-store';
 export * from './agent-panels';
 export * from './api-keys';
 export * from './auth';
diff --git a/src/servers/api/app-store/router.ts b/src/servers/api/app-store/router.ts
new file mode 100644
index 00000000..a9a765b3
--- /dev/null
+++ b/src/servers/api/app-store/router.ts
@@ -0,0 +1,85 @@
+import { createRouter } from '../../create-router';
+import * as errors from '../../custom-errors';
+import { isSuperAdmin } from '../../super-admin';
+import { listStore, install, setEnabled, uninstall } from '../../app-store/service';
+import { byId, type InstallMode } from '../../app-store/catalogue';
+
+// /api/app-store — what can be installed, what is installed, and the four verbs that change it.
+//
+// ── Owner only, explicitly ──
+//
+// Installing a sidecar starts a process on the machine, and provisioning one starts containers. That is
+// an administrative act however many members share the server, so this router gates on the owner in its
+// own right rather than relying on the capability layer alone. `server-admin` already covers it, and
+// this is the belt to that braces — the same shape `/api/vault` uses, and for the same reason: a
+// mistake here is not a leak of data, it is arbitrary process control.
+//
+// The per-user half lives elsewhere: `service_connections` is where a member's own credential goes, and
+// members.ts is how they get one.
+
+export const appStoreRouter = createRouter();
+
+appStoreRouter.use(async (ctx, next) => {
+  if (!(await isSuperAdmin(ctx.get('user')))) throw errors.FORBIDDEN('The app store is owner-only');
+  return next();
+});
+
+/** GET /api/app-store — the catalogue joined to what has happened to each entry. */
+appStoreRouter.get('/', async (ctx) => {
+  return ctx.json({ items: await listStore() });
+});
+
+/**
+ * POST /api/app-store/:id/install — install, or resume one that stopped.
+ *
+ * Resume is the same call deliberately: pressing the button after a failure and pressing it after
+ * supplying the API key it was waiting for are one action to the user. What re-runs is decided by the
+ * steps already recorded, not by which endpoint was hit.
+ *
+ * Answers with the outcome rather than a bare 200 — `blocked` is a normal result that the UI has to
+ * render differently from success, and flattening it to "ok" would lose the reason and the link.
+ */
+appStoreRouter.post('/:id/install', async (ctx) => {
+  const id = ctx.req.param('id');
+  const entry = byId(id);
+  if (!entry) throw errors.NOT_FOUND(`Unknown sidecar: ${id}`);
+
+  const body = (ctx.get('body') ?? {}) as { mode?: string; values?: Record<string, string> };
+  const mode = body.mode as InstallMode | undefined;
+  if (!mode) throw errors.BAD_REQUEST('mode is required');
+  if (!entry.modes.includes(mode)) {
+    throw errors.BAD_REQUEST(`${entry.label} cannot be installed as '${mode}'`);
+  }
+
+  // The install log is collected rather than streamed for now. Streaming it into a terminal panel is
+  // the intended shape — the lines are already produced one at a time — and needs a channel this route
+  // does not have yet.
+  const lines: string[] = [];
+  const outcome = await install({ sidecarId: id, mode, values: body.values ?? {}, log: (l) => lines.push(l) });
+
+  return ctx.json({ outcome, log: lines });
+});
+
+/** POST /api/app-store/:id/enable — start the sidecar (and, later, its container). */
+appStoreRouter.post('/:id/enable', async (ctx) => {
+  await setEnabled(ctx.req.param('id'), true);
+  return ctx.json({ ok: true });
+});
+
+/** POST /api/app-store/:id/disable — stop it, keeping everything installed. */
+appStoreRouter.post('/:id/disable', async (ctx) => {
+  await setEnabled(ctx.req.param('id'), false);
+  return ctx.json({ ok: true });
+});
+
+/**
+ * POST /api/app-store/:id/uninstall — stop running this.
+ *
+ * A POST rather than a DELETE, because it is not a deletion: the sidecar's tables and the service
+ * directory survive it. Calling it DELETE would suggest otherwise to the next person reading the route
+ * table.
+ */
+appStoreRouter.post('/:id/uninstall', async (ctx) => {
+  await uninstall(ctx.req.param('id'));
+  return ctx.json({ ok: true });
+});
diff --git a/src/servers/app-store/effects.ts b/src/servers/app-store/effects.ts
new file mode 100644
index 00000000..0d3bcb17
--- /dev/null
+++ b/src/servers/app-store/effects.ts
@@ -0,0 +1,109 @@
+import { join } from 'node:path';
+import { getOwnerUser, saveServiceConnection } from 'officerdb';
+import type { InstallEffects, StepContext } from './installer';
+import { preflight } from './preflight';
+import { runSetupScript } from './run-script';
+import { startProcess } from './pm2';
+import { serviceDir } from './paths';
+
+// The installer's steps, wired to the actual world.
+//
+// Kept apart from `installer.ts` on purpose: that file is the machine — ordering, resume, blocking —
+// and is tested with these replaced by spies. This file is the thin part that genuinely touches PM2,
+// Postgres and the filesystem, and is deliberately boring enough to read in one sitting.
+
+/** Where the platform lives, for `pm2 start ecosystem.config.cjs`. */
+const PLATFORM_DIR = process.cwd();
+
+const TEMPLATES_DIR = join(import.meta.dir, 'templates');
+
+export function createEffects(): InstallEffects {
+  return {
+    preflight: (entry, mode) => preflight(entry, mode),
+
+    async provision(ctx: StepContext) {
+      const template = ctx.entry.composeTemplate;
+      // planSteps only emits `provision` for a provisioned install, and the catalogue test asserts
+      // every such entry has a template — so reaching here without one is a broken catalogue, not a
+      // user error, and it should say so rather than fail obscurely inside the runner.
+      if (!template) throw new Error(`${ctx.entry.id} has no compose template but was asked to provision`);
+
+      const result = await runSetupScript({
+        sidecarId: ctx.entry.id,
+        templateDir: join(TEMPLATES_DIR, template),
+        env: ctx.values,
+        log: ctx.log,
+      });
+      if (!result.ok) throw new Error(result.error);
+
+      return { results: result.results, composeDir: result.serviceDir };
+    },
+
+    async connect(ctx: StepContext) {
+      const url = ctx.values.url;
+      // A provisioned install knows its own URL because the setup script printed it. An `existing` one
+      // was given it in the form. Neither having produced one means we cannot reach the service, and
+      // the honest answer is to stop rather than write a row that points nowhere.
+      if (!url) {
+        return {
+          status: 'blocked',
+          reason: `${ctx.entry.label} is running, but no connection URL was provided.`,
+        };
+      }
+
+      // Shape 3 from templates/README.md: Immich, Jellyfin and Memos mint their API key in their own
+      // UI, so a provisioned install is up and healthy but not yet connectable. That is a pause, not a
+      // failure — see markBlocked.
+      const needsSecret = ctx.entry.existingFields?.some((f) => f.key === 'secret' && f.required);
+      if (needsSecret && !ctx.values.secret) {
+        return {
+          status: 'blocked',
+          reason: `${ctx.entry.label} needs an API key, which only its own interface can create.`,
+          completeAt: url,
+        };
+      }
+
+      const owner = await getOwnerUser();
+      if (!owner) throw new Error('no owner account');
+
+      // The OWNER's row: it carries the URL and IS the instance. Members get their own rows later, with
+      // a null url that inherits this one — see members.ts and the service_connections schema.
+      await saveServiceConnection({
+        userId: owner.id,
+        service: ctx.entry.id as never,
+        url,
+        username: ctx.values.username || null,
+        secret: ctx.values.secret || null,
+        path: ctx.values.path || null,
+      });
+
+      ctx.log(`connection saved for ${ctx.entry.label}`);
+      return { status: 'done' };
+    },
+
+    async applySchema(ctx: StepContext) {
+      // A no-op today, and honestly so. Every sidecar's tables still ship in the platform's single
+      // Drizzle schema and arrive together via `bun db:push`, so by the time an install runs they
+      // already exist. The step is in the plan because per-sidecar schema is the direction — a
+      // marketplace plugin cannot ship a table into a schema it does not own — and adding the step
+      // later would mean revisiting every install that had already recorded its progress without it.
+      ctx.log('schema: already present (platform-wide schema; per-sidecar schema is a later phase)');
+    },
+
+    async startProcess(ctx: StepContext) {
+      const result = await startProcess(ctx.entry.process, PLATFORM_DIR);
+      if (!result.ok) throw new Error(`could not start ${ctx.entry.process}: ${result.error}`);
+      ctx.log(`${ctx.entry.process} started`);
+    },
+
+    async provisionMembers(ctx: StepContext) {
+      // Nothing implements MemberProvisioner yet — each sidecar will, beside its own code, rather than
+      // in a switch here. Logged rather than silently skipped so that a member who cannot see a service
+      // has a trail explaining why.
+      ctx.log(`members: no provisioner registered for ${ctx.entry.id} yet — members will need manual access`);
+    },
+  };
+}
+
+/** Where a provisioned service's compose file lives, for the caller to record. */
+export const composeDirFor = (sidecarId: string): string => serviceDir(sidecarId);
diff --git a/src/servers/app-store/pm2.ts b/src/servers/app-store/pm2.ts
new file mode 100644
index 00000000..282fd1f4
--- /dev/null
+++ b/src/servers/app-store/pm2.ts
@@ -0,0 +1,98 @@
+// Starting and stopping a sidecar's PM2 process.
+//
+// ── Why shell out rather than use the pm2 API ──
+//
+// PM2 is already the supervisor for every process here and the ecosystem file is already the definition
+// of how each one runs. Importing pm2 as a library would put a second thing in charge of that, and the
+// failure mode is two supervisors disagreeing about what should be running. The CLI is the same
+// interface a human uses, which also means an owner can undo anything the app store did with a command
+// they already know.
+//
+// ── The one PM2 fact that matters here ──
+//
+// `pm2 start <name>` only works for a process PM2 has already seen. A sidecar that has never run is not
+// in PM2's list, and starting it by name fails with "process or namespace not found". So a first
+// install has to start it FROM THE ECOSYSTEM FILE, and every start after that can go by name.
+//
+// `startProcess` handles both without the caller having to know which case it is in, because the caller
+// genuinely cannot know: a resumed install, a re-enable after a restart, and a first install all arrive
+// at the same line.
+
+export type Pm2Result = { ok: true } | { ok: false; error: string };
+
+const ECOSYSTEM = 'ecosystem.config.cjs';
+
+async function pm2(args: string[], cwd: string): Promise<{ code: number; out: string }> {
+  const proc = Bun.spawn(['pm2', ...args], { cwd, stdout: 'pipe', stderr: 'pipe' });
+  const [out, err] = await Promise.all([new Response(proc.stdout).text(), new Response(proc.stderr).text()]);
+  const code = await proc.exited;
+  return { code, out: `${out}${err}`.trim() };
+}
+
+/** Is this process known to PM2 at all — running, stopped or errored? */
+export async function isKnownToPm2(name: string, cwd: string): Promise<boolean> {
+  const { code, out } = await pm2(['jlist'], cwd);
+  if (code !== 0) return false;
+  try {
+    const list = JSON.parse(out) as Array<{ name?: string }>;
+    return list.some((p) => p.name === name);
+  } catch {
+    // jlist printing something unparseable means PM2 is in a state we should not guess about. Saying
+    // "not known" makes the caller start from the ecosystem file, which is the safe direction — it
+    // works whether or not the process exists.
+    return false;
+  }
+}
+
+/**
+ * Start a sidecar, whether or not PM2 has seen it before.
+ *
+ * `--only` is what keeps this surgical: starting the ecosystem file without it would bring up every
+ * process in the estate, which on a light install is precisely the thing the user opted out of.
+ */
+export async function startProcess(name: string, cwd: string): Promise<Pm2Result> {
+  const known = await isKnownToPm2(name, cwd);
+  const args = known ? ['start', name] : ['start', ECOSYSTEM, '--only', name];
+
+  const { code, out } = await pm2(args, cwd);
+  if (code !== 0) return { ok: false, error: out || `pm2 ${args.join(' ')} exited ${code}` };
+  return { ok: true };
+}
+
+/**
+ * Stop it, leaving it in PM2's list.
+ *
+ * Stop rather than delete, deliberately. A stopped process still appears in `pm2 list` as stopped,
+ * which is the honest picture for a disabled sidecar — deleting it would make a disabled service
+ * indistinguishable from one that was never installed, both to PM2 and to anyone looking.
+ */
+export async function stopProcess(name: string, cwd: string): Promise<Pm2Result> {
+  const { code, out } = await pm2(['stop', name], cwd);
+  // Stopping something that is not there is the desired end state, not an error. This happens on a
+  // resumed uninstall, and treating it as a failure would leave the row un-uninstallable.
+  if (code !== 0 && !/not found|doesn't exist/i.test(out)) {
+    return { ok: false, error: out || `pm2 stop ${name} exited ${code}` };
+  }
+  return { ok: true };
+}
+
+/** Remove it from PM2 entirely. Uninstall only — see `stopProcess` for why disable does not do this. */
+export async function deleteProcess(name: string, cwd: string): Promise<Pm2Result> {
+  const { code, out } = await pm2(['delete', name], cwd);
+  if (code !== 0 && !/not found|doesn't exist/i.test(out)) {
+    return { ok: false, error: out || `pm2 delete ${name} exited ${code}` };
+  }
+  return { ok: true };
+}
+
+/** 'online' | 'stopped' | 'errored' | … , or null when PM2 has never heard of it. */
+export async function processStatus(name: string, cwd: string): Promise<string | null> {
+  const { code, out } = await pm2(['jlist'], cwd);
+  if (code !== 0) return null;
+  try {
+    const list = JSON.parse(out) as Array<{ name?: string; pm2_env?: { status?: string } }>;
+    return list.find((p) => p.name === name)?.pm2_env?.status ?? null;
+  } catch {
+    return null;
+  }
+}
diff --git a/src/servers/app-store/run-script.test.ts b/src/servers/app-store/run-script.test.ts
index f1ddcfe9..2915980c 100644
--- a/src/servers/app-store/run-script.test.ts
+++ b/src/servers/app-store/run-script.test.ts
@@ -8,7 +8,12 @@ import { parseResults } from './run-script';
 describe('parseResults', () => {
   it('reads the values a script hands back', () => {
     const out = parseResults(
-      ['==> Starting', 'OFFICER_RESULT_URL=http://127.0.0.1:18091', 'OFFICER_RESULT_PATH=/transmission/rpc', '==> Done'].join('\n'),
+      [
+        '==> Starting',
+        'OFFICER_RESULT_URL=http://127.0.0.1:18091',
+        'OFFICER_RESULT_PATH=/transmission/rpc',
+        '==> Done',
+      ].join('\n'),
     );
     expect(out).toEqual({ url: 'http://127.0.0.1:18091', path: '/transmission/rpc' });
   });
diff --git a/src/servers/app-store/service.ts b/src/servers/app-store/service.ts
new file mode 100644
index 00000000..e1bb1093
--- /dev/null
+++ b/src/servers/app-store/service.ts
@@ -0,0 +1,160 @@
+import {
+  listSidecarInstalls,
+  getSidecarInstall,
+  beginInstall,
+  markInstalled,
+  markFailed,
+  markBlocked,
+  setEnabled as setEnabledRow,
+  removeInstall,
+  type SidecarInstall,
+} from 'officerdb';
+import { CATALOGUE, byId, type CatalogueEntry, type InstallMode } from './catalogue';
+import { runInstall, type StepName } from './installer';
+import { createEffects } from './effects';
+import { startProcess, stopProcess, deleteProcess, processStatus } from './pm2';
+import { plannedOutcome } from './members';
+
+// The app store's operations, between the HTTP routes and the machinery. Routes stay about HTTP; this
+// stays about what installing, enabling and uninstalling actually mean.
+
+const PLATFORM_DIR = process.cwd();
+
+export type StoreItem = {
+  id: string;
+  label: string;
+  summary: string;
+  modes: InstallMode[];
+  members: CatalogueEntry['members'];
+  /** What adding a member would do for this service, so the UI can say so before anyone commits. */
+  memberOutcome: ReturnType<typeof plannedOutcome>;
+  existingFields: CatalogueEntry['existingFields'];
+  configFields: CatalogueEntry['configFields'];
+  install: {
+    status: 'not-installed' | SidecarInstall['status'];
+    enabled: boolean;
+    mode: string | null;
+    lastError: string | null;
+    completedSteps: string[];
+  };
+  /** PM2's own view. Included because the row saying `enabled` and the process being dead is the
+   *  interesting case, and hiding it would make the store lie about what is running. */
+  processStatus: string | null;
+};
+
+/** The catalogue joined to what has actually happened to each entry. */
+export async function listStore(): Promise<StoreItem[]> {
+  const installs = new Map((await listSidecarInstalls()).map((row) => [row.sidecarId, row]));
+
+  return Promise.all(
+    CATALOGUE.map(async (entry) => {
+      const row = installs.get(entry.id);
+      return {
+        id: entry.id,
+        label: entry.label,
+        summary: entry.summary,
+        modes: entry.modes,
+        members: entry.members,
+        memberOutcome: plannedOutcome(entry),
+        existingFields: entry.existingFields,
+        configFields: entry.configFields,
+        install: {
+          status: row?.status ?? 'not-installed',
+          enabled: row?.enabled ?? false,
+          mode: row?.mode ?? null,
+          lastError: row?.lastError ?? null,
+          completedSteps: (row?.completedSteps as string[]) ?? [],
+        },
+        // Only asked for things that claim to be installed: `pm2 jlist` per catalogue entry would be
+        // fourteen subprocesses to render a page.
+        processStatus: row ? await processStatus(entry.process, PLATFORM_DIR) : null,
+      };
+    }),
+  );
+}
+
+export type InstallRequest = {
+  sidecarId: string;
+  mode: InstallMode;
+  /** Answers from the form. Passed to the setup script as environment and to `connect` as values. */
+  values: Record<string, string>;
+  log?: (line: string) => void;
+};
+
+/**
+ * Install, or resume an install that stopped.
+ *
+ * Resume is not a separate entry point on purpose: pressing the button again after a failure, and
+ * pressing it again after supplying the API key it was waiting for, are the same action from the user's
+ * side. The recorded steps decide what actually re-runs.
+ */
+export async function install(req: InstallRequest) {
+  const entry = byId(req.sidecarId);
+  if (!entry) throw new Error(`unknown sidecar: ${req.sidecarId}`);
+  if (!entry.modes.includes(req.mode)) {
+    throw new Error(`${entry.label} cannot be installed as '${req.mode}'`);
+  }
+
+  const row = await beginInstall(entry.id, req.mode);
+  const completed = (row.completedSteps as StepName[]) ?? [];
+
+  const outcome = await runInstall({
+    entry,
+    mode: req.mode,
+    values: req.values,
+    completed,
+    effects: createEffects(),
+    log: req.log,
+  });
+
+  if (outcome.status === 'installed') {
+    await markInstalled(entry.id, outcome.completed);
+  } else if (outcome.status === 'blocked') {
+    await markBlocked(entry.id, outcome.completed, outcome.reason);
+  } else {
+    await markFailed(entry.id, outcome.completed, outcome.error);
+  }
+
+  return outcome;
+}
+
+/**
+ * Start or stop a sidecar and its container, without changing what is installed.
+ *
+ * The container half is not implemented yet — `docker compose stop` against the recorded compose
+ * directory — and is deliberately absent rather than silently skipped: a disable that leaves Immich
+ * running is a different thing from one that stops it, and the difference is memory on the user's box.
+ */
+export async function setEnabled(sidecarId: string, enabled: boolean) {
+  const entry = byId(sidecarId);
+  if (!entry) throw new Error(`unknown sidecar: ${sidecarId}`);
+  const row = await getSidecarInstall(sidecarId);
+  if (!row) throw new Error(`${entry.label} is not installed`);
+
+  const result = enabled
+    ? await startProcess(entry.process, PLATFORM_DIR)
+    : await stopProcess(entry.process, PLATFORM_DIR);
+  if (!result.ok) throw new Error(result.error);
+
+  await setEnabledRow(sidecarId, enabled);
+  return { ok: true as const };
+}
+
+/**
+ * Stop running this. Never "delete my data".
+ *
+ * The process is stopped and removed from PM2. The sidecar's tables, the service directory and
+ * everything under it survive — see the schema comment and the design doc. Removing the containers is
+ * the missing half, for the same reason as above.
+ */
+export async function uninstall(sidecarId: string) {
+  const entry = byId(sidecarId);
+  if (!entry) throw new Error(`unknown sidecar: ${sidecarId}`);
+
+  const stopped = await stopProcess(entry.process, PLATFORM_DIR);
+  if (!stopped.ok) throw new Error(stopped.error);
+  await deleteProcess(entry.process, PLATFORM_DIR);
+
+  await removeInstall(sidecarId);
+  return { ok: true as const };
+}
diff --git a/src/servers/capabilities/registry.ts b/src/servers/capabilities/registry.ts
index 3ef80692..3208e200 100644
--- a/src/servers/capabilities/registry.ts
+++ b/src/servers/capabilities/registry.ts
@@ -298,6 +298,18 @@ export const CAPABILITIES: Capability[] = [
   },
 
   // ── admin: the platform administering itself ────────────────────────────────────────────────────
+  {
+    key: 'app-store',
+    label: 'App store',
+    description: 'Install, enable and remove the sidecars this server runs',
+    // Admin, not app. Installing a sidecar starts a process on the machine and provisioning one starts
+    // containers — that is process control, not a feature a member can be granted a read of. The router
+    // gates on the owner in its own right as well; this entry is what makes the boot check pass and what
+    // keeps the surface visible in one enumeration.
+    kind: 'admin',
+    api: ['/app-store'],
+    routes: ['/app-store'],
+  },
   {
     key: 'server-admin',
     label: 'Server settings',
diff --git a/src/servers/hono.ts b/src/servers/hono.ts
index 99a8e447..2a83e517 100644
--- a/src/servers/hono.ts
+++ b/src/servers/hono.ts
@@ -36,6 +36,7 @@ import { terminalRouter } from './api/terminal/sidecar-server';
 import { caldavRouter } from './api/dav/sidecar-server';
 import { memosRouter } from './api/memos/router';
 import { giteaRouter } from './api/gitea/router';
+import { appStoreRouter } from './api/app-store/router';
 import { davSyncRouter } from './api/dav/sync-router';
 import { davRouter } from './api/dav/router';
 import { claimIosProfile } from './api/dav/ios-profile';
@@ -186,6 +187,7 @@ const PROTECTED_MOUNTS: [prefix: string, router: ReturnType<typeof createRouter>
   ['/terminal', terminalRouter],
   ['/memos', memosRouter],
   ['/gitea', giteaRouter],
+  ['/app-store', appStoreRouter],
   ['/caldav', caldavRouter], // the JSON door for Officer's own calendar/contacts UI
   ['/dav', davRouter], // app-password management (the sync door is /dav, top-level)
   ['/notify', notifyRouter],