diff --git a/apps/x/apps/main/src/ipc.ts b/apps/x/apps/main/src/ipc.ts
index 7e8ecc58..fb26ac67 100644
--- a/apps/x/apps/main/src/ipc.ts
+++ b/apps/x/apps/main/src/ipc.ts
@@ -69,6 +69,7 @@ import { capture } from '@x/core/dist/analytics/posthog.js';
 import * as githubAuth from '@x/core/dist/apps/github-auth.js';
 import * as appsInstaller from '@x/core/dist/apps/installer.js';
 import { registryClient } from '@x/core/dist/apps/registry.js';
+import * as appsPublisher from '@x/core/dist/apps/publisher.js';
 
 // D18 install previews awaiting confirmation, keyed by app name.
 const appInstallPreviews = new Map<string, Awaited<ReturnType<typeof appsInstaller.previewInstall>>>();
@@ -1673,6 +1674,22 @@ export function setupIpcHandlers() {
     'apps:rollback': async (_event, args) => {
       return { app: await appsInstaller.rollbackApp(args.folder) };
     },
+    'apps:publish': async (event, args) => {
+      const win = BrowserWindow.fromWebContents(event.sender);
+      const result = await appsPublisher.publishApp(args.folder, (step, detail) => {
+        win?.webContents.send('apps:progress', { folder: args.folder, step, detail });
+      });
+      capture('app_published', { firstPublish: true });
+      return result;
+    },
+    'apps:publishUpdate': async (_event, args) => {
+      const result = await appsPublisher.publishUpdate(args.folder, args.increment);
+      capture('app_published', { version: result.version, firstPublish: false });
+      return result;
+    },
+    'apps:registerExisting': async (_event, args) => {
+      return appsPublisher.registerExisting(args.name, args.repo);
+    },
     'githubAuth:start': async () => {
       const result = await githubAuth.startDeviceFlow();
       // Surface the code and open GitHub's verification page externally (§10).
diff --git a/apps/x/packages/core/src/apps/publisher.ts b/apps/x/packages/core/src/apps/publisher.ts
new file mode 100644
index 00000000..9f6dba49
--- /dev/null
+++ b/apps/x/packages/core/src/apps/publisher.ts
@@ -0,0 +1,441 @@
+import fs from 'node:fs';
+import fsp from 'node:fs/promises';
+import path from 'node:path';
+import {
+    RowboatAppManifestSchema,
+    AppPublishRecordSchema,
+    PACKAGE_NAME_RE,
+    type RowboatAppManifest,
+    type AppPublishRecord,
+    type RegistryRecord,
+} from '@x/shared/dist/rowboat-app.js';
+import { WorkDir } from '../config/config.js';
+import { REGISTRY_REPO } from './constants.js';
+import { appDir } from './indexer.js';
+import { packageApp } from './packager.js';
+import { registryClient } from './registry.js';
+import { getGithubToken, clearAuth } from './github-auth.js';
+
+// Publisher (spec §11): guided first publish as a resumable state machine —
+// each step is persisted to .rowboat-publish.json so a failed publish resumes
+// instead of duplicating side effects.
+
+export class PublishError extends Error {
+    readonly code: string;
+    constructor(code: string, message: string) {
+        super(message);
+        this.code = code;
+    }
+}
+
+const STEPS = ['packaged', 'repo_created', 'source_pushed', 'release_created', 'assets_uploaded', 'registered', 'published'] as const;
+export type PublishStep = typeof STEPS[number];
+
+export type PublishProgress = (step: PublishStep | 'polling', detail?: string) => void;
+
+// ---------------------------------------------------------------------------
+// GitHub REST helpers
+// ---------------------------------------------------------------------------
+
+async function gh<T = unknown>(token: string, method: string, url: string, body?: unknown): Promise<T> {
+    const res = await fetch(url.startsWith('http') ? url : `https://api.github.com${url}`, {
+        method,
+        headers: {
+            'Authorization': `Bearer ${token}`,
+            'Accept': 'application/vnd.github+json',
+            ...(body !== undefined ? { 'Content-Type': 'application/json' } : {}),
+        },
+        body: body !== undefined ? JSON.stringify(body) : undefined,
+    });
+    if (res.status === 401) {
+        await clearAuth();
+        throw new PublishError('github_auth_expired', 'GitHub session expired; sign in again');
+    }
+    if (!res.ok) {
+        const text = await res.text().catch(() => '');
+        throw new PublishError('github_api_error', `${method} ${url}: HTTP ${res.status} ${text.slice(0, 200)}`);
+    }
+    return res.status === 204 ? (undefined as T) : (await res.json()) as T;
+}
+
+// ---------------------------------------------------------------------------
+// Publish record persistence
+// ---------------------------------------------------------------------------
+
+function publishRecordPath(folder: string): string {
+    return path.join(appDir(folder), '.rowboat-publish.json');
+}
+
+async function readPublishRecord(folder: string): Promise<AppPublishRecord | null> {
+    try {
+        return AppPublishRecordSchema.parse(JSON.parse(await fsp.readFile(publishRecordPath(folder), 'utf-8')));
+    } catch {
+        return null;
+    }
+}
+
+async function writePublishRecord(folder: string, record: AppPublishRecord): Promise<void> {
+    await fsp.writeFile(publishRecordPath(folder), JSON.stringify(record, null, 2));
+}
+
+// ---------------------------------------------------------------------------
+// Preflight (§11.1)
+// ---------------------------------------------------------------------------
+
+async function preflight(folder: string, firstPublish: boolean): Promise<{ manifest: RowboatAppManifest; token: string; login: string }> {
+    let manifest: RowboatAppManifest;
+    try {
+        manifest = RowboatAppManifestSchema.parse(
+            JSON.parse(await fsp.readFile(path.join(appDir(folder), 'rowboat-app.json'), 'utf-8')),
+        );
+    } catch (e) {
+        throw new PublishError('invalid_manifest', e instanceof Error ? e.message : String(e));
+    }
+    if (!PACKAGE_NAME_RE.test(manifest.name)) throw new PublishError('invalid_name', `"${manifest.name}" is not a valid package name`);
+    const entryAbs = path.join(appDir(folder), 'dist', manifest.entry);
+    if (!fs.existsSync(entryAbs)) throw new PublishError('missing_entry', `dist/${manifest.entry} does not exist`);
+
+    const auth = await getGithubToken();
+    if (!auth) throw new PublishError('not_signed_in', 'sign in to GitHub to publish');
+
+    if (firstPublish) {
+        const existing = await registryClient.resolve(manifest.name).catch(() => null);
+        if (existing) throw new PublishError('name_taken', `"${manifest.name}" is already registered`);
+    }
+    return { manifest, token: auth.token, login: auth.login };
+}
+
+// ---------------------------------------------------------------------------
+// Source push (§11.2 step 3) — one commit via the Git Data API
+// ---------------------------------------------------------------------------
+
+const PUSH_EXCLUDES = new Set(['data', 'node_modules', '.previous']);
+
+async function collectSourceFiles(dir: string, rel = ''): Promise<string[]> {
+    const out: string[] = [];
+    for (const entry of await fsp.readdir(path.join(dir, rel), { withFileTypes: true })) {
+        const relPath = rel ? `${rel}/${entry.name}` : entry.name;
+        if (entry.name.startsWith('.')) continue; // dotfiles incl. .rowboat-*.json
+        if (PUSH_EXCLUDES.has(entry.name) && !rel) continue;
+        if (entry.isSymbolicLink()) continue;
+        if (entry.isDirectory()) out.push(...await collectSourceFiles(dir, relPath));
+        else if (entry.isFile()) out.push(relPath);
+    }
+    return out;
+}
+
+function generatedReadme(manifest: RowboatAppManifest): string {
+    return `# ${manifest.name}
+
+${manifest.description || 'A Rowboat app.'}
+
+## Install in Rowboat
+
+Open Rowboat → Apps → Catalog → search for **${manifest.name}** → Install.
+${manifest.agents.length ? `\nBundled background agents: ${manifest.agents.map((a) => `\`${a}\``).join(', ')} (installed disabled; enable them in Rowboat).\n` : ''}`;
+}
+
+function generatedLicense(holder: string): string {
+    const year = new Date().getFullYear();
+    return `MIT License
+
+Copyright (c) ${year} ${holder}
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+`;
+}
+
+async function pushSource(token: string, login: string, repoName: string, folder: string, manifest: RowboatAppManifest, version: string): Promise<void> {
+    const dir = appDir(folder);
+    const files = await collectSourceFiles(dir);
+
+    type TreeEntry = { path: string; mode: '100644'; type: 'blob'; sha: string };
+    const tree: TreeEntry[] = [];
+    for (const rel of files) {
+        const content = await fsp.readFile(path.join(dir, rel));
+        const blob = await gh<{ sha: string }>(token, 'POST', `/repos/${login}/${repoName}/git/blobs`, {
+            content: content.toString('base64'),
+            encoding: 'base64',
+        });
+        tree.push({ path: rel, mode: '100644', type: 'blob', sha: blob.sha });
+    }
+    // Generated companions when the author has none (§11.2 step 3).
+    const addGenerated = async (relPath: string, content: string) => {
+        if (files.some((f) => f.toLowerCase() === relPath.toLowerCase())) return;
+        const blob = await gh<{ sha: string }>(token, 'POST', `/repos/${login}/${repoName}/git/blobs`, {
+            content: Buffer.from(content).toString('base64'), encoding: 'base64',
+        });
+        tree.push({ path: relPath, mode: '100644', type: 'blob', sha: blob.sha });
+    };
+    await addGenerated('README.md', generatedReadme(manifest));
+    await addGenerated('LICENSE', generatedLicense(login));
+    await addGenerated('.gitignore', 'data/\nnode_modules/\n.rowboat-install.json\n.rowboat-publish.json\n.previous/\n');
+
+    const treeRes = await gh<{ sha: string }>(token, 'POST', `/repos/${login}/${repoName}/git/trees`, { tree });
+
+    // Parent-less commit for an empty repo; otherwise chain onto main.
+    let parents: string[] = [];
+    try {
+        const ref = await gh<{ object: { sha: string } }>(token, 'GET', `/repos/${login}/${repoName}/git/ref/heads/main`);
+        parents = [ref.object.sha];
+    } catch { /* empty repo */ }
+
+    const commit = await gh<{ sha: string }>(token, 'POST', `/repos/${login}/${repoName}/git/commits`, {
+        message: `Publish ${manifest.name} v${version}`,
+        tree: treeRes.sha,
+        parents,
+    });
+
+    if (parents.length) {
+        await gh(token, 'PATCH', `/repos/${login}/${repoName}/git/refs/heads/main`, { sha: commit.sha, force: false });
+    } else {
+        await gh(token, 'POST', `/repos/${login}/${repoName}/git/refs`, { ref: 'refs/heads/main', sha: commit.sha });
+    }
+}
+
+async function uploadAsset(token: string, uploadUrlBase: string, name: string, data: Buffer, contentType: string): Promise<void> {
+    const res = await fetch(`${uploadUrlBase}?name=${encodeURIComponent(name)}`, {
+        method: 'POST',
+        headers: {
+            'Authorization': `Bearer ${token}`,
+            'Accept': 'application/vnd.github+json',
+            'Content-Type': contentType,
+            'Content-Length': String(data.length),
+        },
+        body: new Uint8Array(data),
+    });
+    if (!res.ok && res.status !== 422) { // 422 = asset already exists (resume)
+        throw new PublishError('asset_upload_failed', `upload ${name}: HTTP ${res.status}`);
+    }
+}
+
+// ---------------------------------------------------------------------------
+// Guided first publish (§11.2)
+// ---------------------------------------------------------------------------
+
+export async function publishApp(
+    folder: string,
+    onProgress: PublishProgress = () => undefined,
+): Promise<{ status: 'published' | 'pending'; repoUrl: string; releaseUrl: string; prUrl?: string }> {
+    const { manifest, token, login } = await preflight(folder, true);
+    const name = manifest.name;
+    const repoUrl = `https://github.com/${login}/${name}`;
+    const releaseUrl = `${repoUrl}/releases/tag/v${manifest.version}`;
+
+    const prior = await readPublishRecord(folder);
+    const completed = new Set(prior?.pendingSteps?.version === manifest.version ? prior.pendingSteps.completed : []);
+    let releaseId = prior?.pendingSteps?.releaseId;
+    let prUrl = prior?.pendingSteps?.prUrl;
+
+    const record: AppPublishRecord = {
+        name, login, repo: `${login}/${name}`,
+        pendingSteps: { version: manifest.version, completed: [...completed], ...(releaseId ? { releaseId } : {}), ...(prUrl ? { prUrl } : {}) },
+    };
+    const mark = async (step: PublishStep) => {
+        completed.add(step);
+        record.pendingSteps = { version: manifest.version, completed: [...completed], ...(releaseId ? { releaseId } : {}), ...(prUrl ? { prUrl } : {}) };
+        await writePublishRecord(folder, record);
+        onProgress(step);
+    };
+
+    // 1. packaged
+    const outDir = path.join(WorkDir, 'tmp', `app-publish-${name}`);
+    const pkg = await packageApp(folder, outDir);
+    await mark('packaged');
+
+    // 2. repo_created (resume-aware)
+    if (!completed.has('repo_created')) {
+        try {
+            await gh(token, 'POST', '/user/repos', { name, description: manifest.description, visibility: 'public', auto_init: false });
+        } catch (e) {
+            const exists = await gh(token, 'GET', `/repos/${login}/${name}`).then(() => true).catch(() => false);
+            if (!exists) throw e;
+        }
+        await mark('repo_created');
+    }
+
+    // 3. source_pushed
+    if (!completed.has('source_pushed')) {
+        await pushSource(token, login, name, folder, manifest, manifest.version);
+        await mark('source_pushed');
+    }
+
+    // 4. release_created
+    if (!completed.has('release_created') || !releaseId) {
+        try {
+            const release = await gh<{ id: number }>(token, 'POST', `/repos/${login}/${name}/releases`, {
+                tag_name: `v${manifest.version}`, name: `v${manifest.version}`, body: `sha256: ${pkg.sha256}`,
+            });
+            releaseId = release.id;
+        } catch {
+            const existing = await gh<{ id: number }>(token, 'GET', `/repos/${login}/${name}/releases/tags/v${manifest.version}`);
+            releaseId = existing.id;
+        }
+        await mark('release_created');
+    }
+
+    // 5. assets_uploaded (both REQUIRED — the standalone manifest powers update checks)
+    if (!completed.has('assets_uploaded')) {
+        const uploadBase = `https://uploads.github.com/repos/${login}/${name}/releases/${releaseId}/assets`;
+        await uploadAsset(token, uploadBase, `${name}.rowboat-app`, await fsp.readFile(pkg.bundlePath), 'application/zip');
+        await uploadAsset(token, uploadBase, 'rowboat-app.json',
+            Buffer.from(await fsp.readFile(path.join(appDir(folder), 'rowboat-app.json'))), 'application/json');
+        await mark('assets_uploaded');
+    }
+
+    // 7. registered — fork + branch + record + PR
+    if (!completed.has('registered')) {
+        const [registryOwner, registryName] = REGISTRY_REPO.split('/');
+        await gh(token, 'POST', `/repos/${REGISTRY_REPO}/forks`).catch(() => undefined);
+        // Forks are async — poll up to 60s.
+        const forkRepo = `${login}/${registryName}`;
+        let forked = false;
+        for (let i = 0; i < 30; i++) {
+            forked = await gh(token, 'GET', `/repos/${forkRepo}`).then(() => true).catch(() => false);
+            if (forked) break;
+            await new Promise((r) => setTimeout(r, 2000));
+        }
+        if (!forked) throw new PublishError('fork_timeout', `fork of ${REGISTRY_REPO} did not appear`);
+
+        const upstreamMain = await gh<{ object: { sha: string } }>(token, 'GET', `/repos/${REGISTRY_REPO}/git/ref/heads/main`);
+        const branch = `publish-${name}`;
+        await gh(token, 'POST', `/repos/${forkRepo}/git/refs`, { ref: `refs/heads/${branch}`, sha: upstreamMain.object.sha })
+            .catch(() => undefined); // resume: branch may exist
+
+        const registryRecord: RegistryRecord = {
+            schemaVersion: 1, name, owner: login, repo: `${login}/${name}`,
+            description: manifest.description,
+            ...(manifest.icon ? { iconUrl: `https://raw.githubusercontent.com/${login}/${name}/HEAD/dist/${manifest.icon}` } : {}),
+            createdAt: new Date().toISOString(),
+        };
+        await gh(token, 'PUT', `/repos/${forkRepo}/contents/apps/${name}.json`, {
+            message: `publish: ${name}`,
+            content: Buffer.from(JSON.stringify(registryRecord, null, 2) + '\n').toString('base64'),
+            branch,
+        });
+
+        const pr = await gh<{ html_url: string }>(token, 'POST', `/repos/${REGISTRY_REPO}/pulls`, {
+            title: `publish: ${name}`, head: `${login}:${branch}`, base: 'main',
+        }).catch(async () => {
+            // resume: PR may already exist
+            const open = await gh<Array<{ html_url: string }>>(token, 'GET',
+                `/repos/${REGISTRY_REPO}/pulls?head=${login}:${branch}&state=all`);
+            if (!open.length) throw new PublishError('pr_failed', 'could not open the registry PR');
+            return open[0];
+        });
+        prUrl = pr.html_url;
+        void registryOwner;
+        await mark('registered');
+    }
+
+    // 8. published — poll the PR (10s cadence, 5-min timeout)
+    onProgress('polling', prUrl);
+    const prNumber = prUrl ? Number(prUrl.split('/').pop()) : NaN;
+    for (let i = 0; i < 30 && prUrl && Number.isFinite(prNumber); i++) {
+        const pr = await gh<{ merged: boolean; state: string }>(token, 'GET', `/repos/${REGISTRY_REPO}/pulls/${prNumber}`);
+        if (pr.merged) {
+            await writePublishRecord(folder, {
+                name, login, repo: `${login}/${name}`,
+                lastPublishedVersion: manifest.version, lastSha256: pkg.sha256,
+            });
+            onProgress('published');
+            return { status: 'published', repoUrl, releaseUrl, prUrl };
+        }
+        if (pr.state === 'closed') {
+            const comments = await gh<Array<{ body: string }>>(token, 'GET', `/repos/${REGISTRY_REPO}/issues/${prNumber}/comments`);
+            const rejection = comments.map((c) => /^rejected: (\S+)/m.exec(c.body)?.[1]).find(Boolean);
+            throw new PublishError(rejection ?? 'registry_rejected', `registry PR was closed (${rejection ?? 'see PR'})`);
+        }
+        await new Promise((r) => setTimeout(r, 10_000));
+    }
+    return { status: 'pending', repoUrl, releaseUrl, prUrl };
+}
+
+// ---------------------------------------------------------------------------
+// Publish update (§11.3) — no registry interaction (D5)
+// ---------------------------------------------------------------------------
+
+export async function publishUpdate(
+    folder: string,
+    increment: 'patch' | 'minor' | 'major',
+): Promise<{ version: string; releaseUrl: string }> {
+    const record = await readPublishRecord(folder);
+    if (!record) throw new PublishError('not_published', 'this app has not been published yet');
+    const { manifest, token, login } = await preflight(folder, false);
+    if (record.login !== login) throw new PublishError('wrong_account', `published by ${record.login}; signed in as ${login}`);
+
+    const [maj, min, pat] = manifest.version.split('.').map(Number);
+    const version = increment === 'major' ? `${maj + 1}.0.0` : increment === 'minor' ? `${maj}.${min + 1}.0` : `${maj}.${min}.${pat + 1}`;
+
+    // Bump the manifest (pretty-printed, §4.2).
+    const manifestPath = path.join(appDir(folder), 'rowboat-app.json');
+    const raw = JSON.parse(await fsp.readFile(manifestPath, 'utf-8')) as Record<string, unknown>;
+    raw.version = version;
+    await fsp.writeFile(manifestPath, JSON.stringify(raw, null, 2) + '\n');
+
+    const repoName = record.repo.split('/')[1];
+    const pkg = await packageApp(folder, path.join(WorkDir, 'tmp', `app-publish-${manifest.name}`));
+    await pushSource(token, login, repoName, folder, { ...manifest, version } as RowboatAppManifest, version);
+    const release = await gh<{ id: number }>(token, 'POST', `/repos/${record.repo}/releases`, {
+        tag_name: `v${version}`, name: `v${version}`, body: `sha256: ${pkg.sha256}`,
+    });
+    const uploadBase = `https://uploads.github.com/repos/${record.repo}/releases/${release.id}/assets`;
+    await uploadAsset(token, uploadBase, `${manifest.name}.rowboat-app`, await fsp.readFile(pkg.bundlePath), 'application/zip');
+    await uploadAsset(token, uploadBase, 'rowboat-app.json', Buffer.from(await fsp.readFile(manifestPath)), 'application/json');
+
+    await writePublishRecord(folder, { ...record, lastPublishedVersion: version, lastSha256: pkg.sha256, pendingSteps: undefined });
+    return { version, releaseUrl: `https://github.com/${record.repo}/releases/tag/v${version}` };
+}
+
+// ---------------------------------------------------------------------------
+// Advanced path (§11.5): register an existing GitHub release
+// ---------------------------------------------------------------------------
+
+export async function registerExisting(name: string, repo: string): Promise<{ status: 'published' | 'pending'; prUrl: string }> {
+    const auth = await getGithubToken();
+    if (!auth) throw new PublishError('not_signed_in', 'sign in to GitHub first');
+    if (!PACKAGE_NAME_RE.test(name)) throw new PublishError('invalid_name', name);
+
+    // Courtesy client-side probe of §9.3 check 7.
+    const probe = await fetch(`https://github.com/${repo}/releases/latest/download/${name}.rowboat-app`, { method: 'HEAD', redirect: 'follow' });
+    if (!probe.ok) throw new PublishError('missing_release_asset', `releases/latest has no ${name}.rowboat-app`);
+
+    const [, registryName] = REGISTRY_REPO.split('/');
+    await gh(auth.token, 'POST', `/repos/${REGISTRY_REPO}/forks`).catch(() => undefined);
+    const forkRepo = `${auth.login}/${registryName}`;
+    for (let i = 0; i < 30; i++) {
+        if (await gh(auth.token, 'GET', `/repos/${forkRepo}`).then(() => true).catch(() => false)) break;
+        await new Promise((r) => setTimeout(r, 2000));
+    }
+    const upstreamMain = await gh<{ object: { sha: string } }>(auth.token, 'GET', `/repos/${REGISTRY_REPO}/git/ref/heads/main`);
+    const branch = `publish-${name}`;
+    await gh(auth.token, 'POST', `/repos/${forkRepo}/git/refs`, { ref: `refs/heads/${branch}`, sha: upstreamMain.object.sha }).catch(() => undefined);
+    const record: RegistryRecord = {
+        schemaVersion: 1, name, owner: auth.login, repo, description: '', createdAt: new Date().toISOString(),
+    };
+    await gh(auth.token, 'PUT', `/repos/${forkRepo}/contents/apps/${name}.json`, {
+        message: `publish: ${name}`,
+        content: Buffer.from(JSON.stringify(record, null, 2) + '\n').toString('base64'),
+        branch,
+    });
+    const pr = await gh<{ html_url: string }>(auth.token, 'POST', `/repos/${REGISTRY_REPO}/pulls`, {
+        title: `publish: ${name}`, head: `${auth.login}:${branch}`, base: 'main',
+    });
+    return { status: 'pending', prUrl: pr.html_url };
+}
diff --git a/apps/x/packages/shared/src/ipc.ts b/apps/x/packages/shared/src/ipc.ts
index f27144cd..0f3c762a 100644
--- a/apps/x/packages/shared/src/ipc.ts
+++ b/apps/x/packages/shared/src/ipc.ts
@@ -1319,6 +1319,28 @@ const ipcSchemas = {
     req: z.object({ folder: z.string() }),
     res: z.object({ app: AppSummarySchema }),
   },
+  // Advisory progress pushes for long-running app operations (§13).
+  'apps:progress': {
+    req: z.object({ folder: z.string(), step: z.string(), detail: z.string().optional() }),
+    res: z.null(),
+  },
+  'apps:publish': {
+    req: z.object({ folder: z.string() }),
+    res: z.object({
+      status: z.enum(['published', 'pending']),
+      repoUrl: z.string(),
+      releaseUrl: z.string(),
+      prUrl: z.string().optional(),
+    }),
+  },
+  'apps:publishUpdate': {
+    req: z.object({ folder: z.string(), increment: z.enum(['patch', 'minor', 'major']) }),
+    res: z.object({ version: z.string(), releaseUrl: z.string() }),
+  },
+  'apps:registerExisting': {
+    req: z.object({ name: z.string(), repo: z.string() }),
+    res: z.object({ status: z.enum(['published', 'pending']), prUrl: z.string() }),
+  },
   // GitHub auth (device flow) — required only for publishing apps (spec §10).
   'githubAuth:start': {
     req: z.object({}),