diff --git a/CHECKPOINT-encryption.md b/CHECKPOINT-encryption.md
index 6597edd..6c5c5b5 100644
--- a/CHECKPOINT-encryption.md
+++ b/CHECKPOINT-encryption.md
@@ -1,122 +1,182 @@
-# Checkpoint — Profile metadata publishing + profile pictures (2026-08-22)
+# Checkpoint — All audit items closed (2026-08-21)
 
-**App renamed to Keynectr (2026-08-23).** A stopping point you can return to if this session is closed. Everything below was
+A stopping point you can return to if this session is closed. Everything below was
 verified green at the moment this file was written.
 
 ## Where things are
 
-- Project: `/home/avi/Projects/Nostr_Keynctr` (renamed from `0_Nostr` after commit `1116dfd`)
-- Git repo: `master` @ `a6329d5` ("Publish profile metadata (name + picture) so external
-  clients show it"). Before it: `db81f8d` (profile deletion with undo), `9a8f334`
-  (audit checkpoint refresh), and the 2026-08-21 audit-fix commits (`f7db29e`, `d90b6e5`,
-  `130d7e2`).
+- Project: `/home/avi/Projects/0_Nostr`
+- Git repo: `master` @ `f7db29e` ("Add SSRF guard, signer queue cap, secret echo, request
+  timeout"). Before it: `130d7e2` (zeroization), `4461307` (owner-only writes), `4bd7660`
+  (legacy vault perms), `4d4dfde` (CSP + navigation guards), `6e627a3` (upload tokens),
+  `4bde395` (IPC allowlist).
 - Working tree is **clean** apart from this checkpoint update, which is committed right after.
 
-## What was completed
+## What was completed: the full 2026-08-21 security audit remediation
 
-**Problem:** profiles created in the app never published a Nostr kind 0 metadata event,
-so other clients showed generated petnames ("evil iguana", "homeless leech") or a
-truncated npub instead of the user's chosen name.
+All ten findings from the 2026-08-21 security audit are fixed.
 
-1. **Automatic metadata on creation** — `create_profile` now publishes a kind 0 event
-   with the label as `name`/`display_name` to all enabled relays (best-effort; relay
-   failures never block creation).
-2. **"Publish name" action for existing profiles** — new button on every Profiles-screen
-   card plus CLI `publish-name <npub>`. Returns a per-relay report shown in the UI.
-3. **Profile pictures end-to-end** —
-   - Vault: optional `picture: Option<String>` per profile (serde default → old vaults
-     load unchanged).
-   - Backend: `set_profile_picture` validates http(s) URLs only, stores the URL, and
-     publishes kind 0 including `picture`; clearing supported (`None`).
-   - GUI: "Picture" button opens a modal — paste a URL, upload a file via the existing
-     nostr.build pipeline, or remove; avatar shows the picture everywhere in-app.
-   - CLI: `set-picture <npub> <url>`.
-4. **Nested-runtime safety** — metadata publishing runs on a dedicated OS thread with its
-   own tokio runtime, so both sync (CLI) and async (IPC server) callers are safe.
-5. **Finished prior session's delete/undo work** — exposed `undo_history` in
-   `AppStateView`, fixed invalid Button variants / missing icon / null-safety errors so
-   the frontend typechecks again.
-6. **Test hygiene fix** — `Settings::default()` points at real relays and tests were
-   silently publishing events to them (one got rate-limited by damus.io). All test suites
-   now use offline settings; test time dropped from ~126 s to ~3 s.
+**#1 IPC method allowlist (`4bde395`, `main.ts` only):**
+- `RENDERER_METHODS` set in the Electron main process: the three native methods
+  (`pick_image`, `link_preview`, `upload_image`) plus every Rust-backend method used by
+  `frontend/src/lib/api.ts`.
+- `isAllowedMethod()` gate at the top of the `backend:request` handler; unknown methods get
+  `{status:'error', code:'unknown_method'}`, are logged, and never reach the backend.
+- No behaviour change for the real UI (only `api.ts` calls `window.backend.request`).
 
-## Commits added in this session
+**#2 Upload pick tokens (`6e627a3`):**
+The renderer used to send raw filesystem paths back to main for upload, so a compromised
+page could read+publish arbitrary local files to nostr.build. Now:
+- `pickImage()` (`main.ts`) mints a random 32-hex-char token per picked file via
+  `crypto.randomBytes`; tokens map to the file record in `pickedTokens` (main-process memory
+  only). The renderer receives `{token, name, mime}` — it never sees any path.
+- `upload_image` accepts only a valid `token`; the token is consumed (deleted) before the
+  upload starts, so each pick authorises exactly one upload. Unknown/used/expired tokens
+  return `{status:'error', code:'unknown_token', message:'That image selection has expired.
+  Please attach it again.'}` — the user just re-picks the image.
+- Renderer updates: `PickedImage.path` → `PickedImage.token` (`types.ts`), `api.uploadImage(token)`
+  (`api.ts`), context type + callback (`AppProvider.tsx`), `ComposeScreen.onAttach` uses
+  `image.token`.
+- Fake backend mirrors the contract: `upload_image` without a non-empty `token` throws an
+  `unknown_token` error, so tests exercise the same protocol rule.
 
-- `7c6a085` Rename the app to Keynectr
-- `ae5ddda` Allow new profile methods through the Electron IPC allowlist
-- `a6329d5` Publish profile metadata (name + picture) so external clients show it
+**#3 Header-based CSP + navigation/window guards (`4d4dfde`):**
+- The static CSP meta tag was **removed** from `frontend/index.html` and replaced with
+  response headers stamped by `main.ts` (`onHeadersReceived`, mainFrame only):
+  - `CSP_PROD` for `app://` pages: `script-src 'self'` — **no `'unsafe-inline'`**, so an
+    injected `<script>` cannot execute. `connect-src 'self'` (all real network goes through
+    the backend/main process); img-src keeps `https:` for remote feed/preview images.
+  - `CSP_DEV` when `NOSTR_GUI_DEV_URL` matches: keeps `'unsafe-inline'` (Vite's React-refresh
+    preamble is an inline script) but pins `connect-src` to localhost instead of the old
+    wide-open `ws:` — HMR still works.
+  - The meta had to go because it would also have blocked the dev preamble; headers let us
+    ship strict-prod / workable-dev from one HTML file.
+- `will-navigate`: any navigation away from app:// or the dev origin is blocked; http(s)
+  targets open in the system browser via `shell.openExternal`.
+- `setWindowOpenHandler`: all `target="_blank"` popups are denied; external links go to the
+  system browser. Unknown schemes are denied without opening anything.
 
-**Gotcha for future work:** any new backend request type must also be added to
-`RENDERER_METHODS` in `frontend/electron/main.ts`, or the main process rejects it with
-"rejected renderer method" before it reaches the Rust backend.
+**#4 Legacy vault permissions (`4bd7660`):**
+- The original CLI left `profiles_vault.json` files with default (often group-readable)
+  permissions containing plaintext keys. Now:
+  - On **every** startup, `load_vault()` calls the new `harden_stray_legacy_vaults()`
+    (`src/vault.rs`): each known legacy location is checked, and any file that parses as a
+    populated vault is chmod'd to 0600 — whether or not migration ever runs.
+  - During migration itself, the legacy file is tightened before the backup copy is made.
+  - Hardening is best-effort (`let _ =`) so odd filesystems can never break vault loading;
+    unparsable and keyless files are deliberately not touched.
+- One-time local cleanup done by hand in this session: repo-root `profiles_vault.json`
+  was chmod'd from 0664 → 0600.
+- New tests: recognised legacy vault tightened to 0600; unparsable file ignored; empty /
+  encrypted-but-populated vaults classified correctly.
 
-## Verification commands run (all green)
+**#5 Owner-only-from-first-byte writes (`4461307`):**
+- `write_restricted` (`src/vault.rs`): the tmp file is now created with `.mode(0o600)`
+  (OpenOptionsExt), so it never exists under default umask permissions. The explicit
+  `set_permissions` stays, covering a tmp file left over by a crashed earlier run (where
+  `mode` would not apply to an existing file).
+- `backup_file`: replaced `fs::copy` — which gives the new file the *source's* permission
+  bits, so backing up a group-readable legacy vault briefly produced a fully readable copy —
+  with a manual open-at-0600 + `io::copy`, making backups owner-only from their first byte.
+- New test: backup of a 0664 source comes out 0600 with identical content.
 
-Rust (repo root):
+**#6 Key material zeroization (`130d7e2`, adds `zeroize = "1"`):**
+Decrypted secrets and derived keys no longer linger in unscrubbed heap memory:
+- `crypto.rs`: `decrypt_secret` returns `Zeroizing<String>` (self-shredding on drop); the
+  UTF-8 error path wipes the raw bytes too; a failed Argon2 derivation wipes its key buffer.
+- `profiles.rs`: `resolve_secret_key` / `resolve_active_secret_key` now return
+  `Zeroizing<String>`, so every transient plaintext key flowing to publish/upload/signer is
+  wiped when its scope ends. Newly generated keys in `create_profile` are wrapped the same
+  way. `reveal_secret_key` still hands a display copy to the UI by design.
+- `app.rs`: `lock()` and a new `Drop for App` zeroize the session vault key; wrong-password
+  derivations wipe their throwaway keys; password change wipes the previous vault key and
+  the old unlock key; `remove_password` moves decrypted values into storage via
+  `std::mem::take` without extra copies (plaintext-at-rest is that feature's purpose).
+- Callers in `publish.rs`, `uploads.rs`, `signer.rs` needed no changes (deref coercion).
+
+**Smaller items (`f7db29e`, main.ts + signer.rs):**
+- **SSRF guard**: `fetchLinkPreview` resolves the URL's host and refuses loopback/private/
+  link-local targets — literal IPs, DNS answers, and localhost/.local names all checked
+  (`ipv4IsPrivate`/`ipv6IsPrivate`/`resolvesToPrivateAddress`). Crafted note links can no
+  longer make the app probe localhost or the LAN.
+- **Signer queue cap** (`MAX_PENDING_APPROVALS = 20`): a relay flooding `sign_event`
+  requests cannot grow the approval queue unboundedly or bury a genuine prompt; overflow
+  requests get the standard "no decision" error.
+- **NIP-46 secret echo**: when the nostrconnect:// link carried a secret, the client's
+  `connect` request must echo it back or it is refused ("did not include the expected
+  secret"), proving the link arrived unmodified.
+- **Backend request timeout**: `backendRequest` reaps any round-trip after 120s (generous
+  enough for multi-relay publishes), deleting its pending entry so a hung backend cannot
+  leak promises.
+
+## Commits
+
+- `f7db29e` "Add SSRF guard, signer queue cap, secret echo, request timeout" — main.ts +
+  signer.rs (+204/−3).
+- `130d7e2` "Zeroize transient secret key material in memory" — Cargo.toml, crypto.rs,
+  profiles.rs, app.rs (+77/−23).
+- `4461307` "Create vault files owner-only from the first byte" — src/vault.rs (+48/−2).
+- `4bd7660` "Tighten permissions on leftover legacy vault files" — src/vault.rs (+79/−3).
+- `4d4dfde` "Enforce header-based CSP and block window open/navigation" — main.ts + index.html.
+- `6e627a3` "Replace upload file paths with single-use pick tokens" — main.ts, api.ts,
+  types.ts, AppProvider.tsx, ComposeScreen.tsx, fakeBackend.ts (+62/−27).
+- `4bde395` "Restrict renderer IPC to an explicit method allowlist" — main.ts (+49 lines).
+- `dafed33` "Refresh checkpoint with IPC allowlist hardening".
+
+## How it was verified (all green)
 
 ```
-cargo test            # 96 passed; 0 failed
-cargo clippy --all-targets   # 0 errors/warnings from session code
+cargo test            # 84 passed
+cargo clippy --all-targets   # clean
 cargo fmt --check     # clean
-cargo build --release # success
-```
-
-Frontend (`frontend/`):
-
-```
-npm test              # 14 files, 78 tests passed
-npm run typecheck     # clean
-npm run lint          # 0 errors
+cargo build --release # ok
+npm run typecheck     # clean (frontend/)
+npm run lint          # clean (pre-existing module-type warning only)
 npm run format:check  # clean
-npm run build         # vite build success
-npm run electron:build  # tsc electron main success
+npm test              # 78 passed (14 files)
+npm run electron:build # compiles the Electron main process
+npm run build         # rebuilds the React bundle (dist/)
 ```
 
-## How to use / reproduce
+Manual protocol checks worth doing once:
+- DevTools console: `window.backend.request('not_a_method')` → `unknown_method` envelope (#1).
+- DevTools console: `window.backend.request('upload_image', {path:'/etc/passwd'})` →
+  `unknown_token` error; no file is read (#2). Real attachment flow works unchanged.
+- DevTools console: `document.cookie` / injected `<script>` does not run; Application tab
+  shows the CSP header on the app:// document (#3). Link previews open in the system browser.
 
-GUI:
+## How to resume
 
-```bash
-cd ~/Projects/Nostr_Keynctr/frontend && npm start
-```
+1. Open the repo: `cd /home/avi/Projects/0_Nostr`
+2. State is committed: `git status` should be clean; `git log --oneline -4` shows `6e627a3`
+   on top.
+3. Launch as usual: `cd frontend && npm start` (backend already built in `target/release/`).
+4. Re-run verification with the commands above.
 
-- New profiles publish their name automatically on creation.
-- Existing profiles: **Profiles → Publish name** button, or **Picture** button to set a
-  photo (URL paste or file upload) which publishes immediately.
+## Outstanding / next steps (if you continue)
 
-CLI:
+Nothing outstanding from the audit — all ten findings are closed:
 
-```bash
-B=~/Projects/Nostr_Keynctr/target/release/keynectr
-$B list                                   # show profiles
-$B relays enable wss://nos.lol            # enable at least one relay first
-$B publish-name <npub>                    # republish stored name
-$B set-picture <npub> https://…/img.png   # set + publish picture
-```
+| # | Finding | Fix commit |
+|---|---------|-----------|
+| 1 | Unrestricted renderer→backend IPC | `4bde395` |
+| 2 | Arbitrary file upload paths | `6e627a3` |
+| 3 | CSP `unsafe-inline`, no nav guards | `4d4dfde` |
+| 4 | Legacy vault world-readable | `4bd7660` |
+| 5 | Permission race windows on write | `4461307` |
+| 6 | Key material not zeroized | `130d7e2` |
+| 7 | Link-preview SSRF | `f7db29e` |
+| 8 | Signer queue flooding | `f7db29e` |
+| 9 | NIP-46 secret not verified | `f7db29e` |
+| 10 | No backend request timeout | `f7db29e` |
 
-Verified live during the session: kind 0 events confirmed present on nos.lol,
-relay.primal.net, relay.damus.io and the user's own wss://nostr.l484.com via direct
-websocket queries; Iris shows the stored names after publish.
+**Profile deletion with undo functionality** (2026-08-22):
+- Users can delete a profile via `nostr-manager-backend delete-profile <npub>`, which moves the profile to an in-memory undo stack rather than permanently removing it
+- Profiles can be restored with `nostr-manager-backend undo-delete`, which pops the last deleted profile from the undo stack and re-adds it to the vault (becoming active if no other profile exists)
+- The undo stack is in-memory only (lost on process exit); a persistent implementation would require vault metadata changes
+- Vault must be unlocked or unencrypted for deletion to be permitted
+- Existing profile data and vault integrity are preserved
+- CLI commands: `delete-profile <npub>` and `undo-delete`
+- Rust changes verified: `cargo test` (91 tests), `cargo clippy --all-targets` clean, `cargo fmt --check` clean, `cargo build --release` successful
 
-## Notes & next steps
-
-- Nostr has no relay-to-relay sync: names/pictures are only visible on relays they were
-  published to. Keep major relays enabled so clients that don't read your own relay can
-  see the profile.
-- Clients cache profiles; hard-refresh (Ctrl+Shift+R) after republishing.
-- **Next feature (agreed 2026-08-22): NIP-05 identifiers.** Live testing showed Iris
-  renders names+pictures perfectly from plain kind 0 metadata, but Yakihonne only shows
-  a proper username handle when `nip05` is present, and some newer clients
-  (phoenix.social) are picky about relay coverage. Plan: add an optional NIP-05
-  identifier field per profile (GUI + CLI), include it in published metadata, plus docs
-  or a helper for serving `.well-known/nostr.json` on the user's domain (the HTTP side
-  cannot be done by the app alone).
-- Other candidates: rename profiles (edit label + republish), banner/about fields in the
-  edit UI.
-- **Rename details:** binary is now `keynectr`; data lives in `~/.local/share/keynectr`
-  (auto-migrated from `nost-feed-manager` on first run — verified live). The KDF verifier
-  string in crypto.rs was deliberately NOT renamed so old encrypted backups stay readable.
-  If a GitHub remote is ever added, rename the repo to `Nostr_Keynctr` there too.
-- Relay config at time of writing (all enabled): nos.lol, relay.primal.net, l484.com
-  (user's own), damus.io, snort.social, soloco.nl; relay.nostr.band added but was
-  unreachable (handshake timeout) — retry enabling later.
+Possible future work (not audit items): DNS-rebinding TOCTOU in the SSRF guard, OS keyring integration for the vault password, an automated dependency-audit CI job (`cargo audit`, `npm audit`), GUI integration for profile deletion/undo in the ProfilesScreen.
diff --git a/Cargo.lock b/Cargo.lock
index 1bc0190..b13925c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -683,25 +683,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "keynectr"
-version = "0.1.0"
-dependencies = [
- "aes-gcm",
- "argon2",
- "base64",
- "getrandom 0.2.17",
- "hex",
- "nostr",
- "nostr-sdk",
- "rpassword",
- "serde",
- "serde_json",
- "tokio",
- "uuid",
- "zeroize",
-]
-
 [[package]]
 name = "libc"
 version = "0.2.189"
@@ -800,6 +781,25 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "nostr-manager-backend"
+version = "0.1.0"
+dependencies = [
+ "aes-gcm",
+ "argon2",
+ "base64",
+ "getrandom 0.2.17",
+ "hex",
+ "nostr",
+ "nostr-sdk",
+ "rpassword",
+ "serde",
+ "serde_json",
+ "tokio",
+ "uuid",
+ "zeroize",
+]
+
 [[package]]
 name = "nostr-relay-pool"
 version = "0.40.1"
diff --git a/Cargo.toml b/Cargo.toml
index e7b4fd0..b046b6e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "keynectr"
+name = "nostr-manager-backend"
 version = "0.1.0"
 edition = "2021"
 
diff --git a/frontend/electron/main.ts b/frontend/electron/main.ts
index ce51864..6f3de62 100644
--- a/frontend/electron/main.ts
+++ b/frontend/electron/main.ts
@@ -76,10 +76,10 @@ let nextId = 1;
 
 function resolveBackendPath(): string {
   if (app.isPackaged) {
-    return path.join(process.resourcesPath, 'keynectr');
+    return path.join(process.resourcesPath, 'nostr-manager-backend');
   }
   // Development: the crate builds to <project>/target/release.
-  return path.join(app.getAppPath(), '..', 'target', 'release', 'keynectr');
+  return path.join(app.getAppPath(), '..', 'target', 'release', 'nostr-manager-backend');
 }
 
 function startBackend(): void {
@@ -183,10 +183,6 @@ const RENDERER_METHODS: ReadonlySet<string> = new Set([
   'get_state',
   'create_profile',
   'select_profile',
-  'publish_profile_metadata',
-  'set_profile_picture',
-  'delete_profile',
-  'undo_delete',
   'publish_note',
   'feed_get',
   'relay_add',
@@ -494,7 +490,7 @@ function createWindow(): void {
     height: 760,
     minWidth: 920,
     minHeight: 640,
-    title: 'Keynectr',
+    title: 'Nostr Feed Manager',
     backgroundColor: '#f6f4f0',
     autoHideMenuBar: true,
     webPreferences: {
diff --git a/frontend/index.html b/frontend/index.html
index 8b4c4c3..1bdbfe3 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -3,7 +3,7 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Keynectr</title>
+    <title>Nostr Feed Manager</title>
   </head>
   <body>
     <div id="root"></div>
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index adf8c5c..88dc105 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -1,11 +1,11 @@
 {
-  "name": "keynectr",
+  "name": "nost-feed-manager",
   "version": "0.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "keynectr",
+      "name": "nost-feed-manager",
       "version": "0.1.0",
       "dependencies": {
         "react": "^18.3.1",
diff --git a/frontend/package.json b/frontend/package.json
index 52f1075..c12dec4 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
 {
-  "name": "keynectr",
-  "productName": "Keynectr",
+  "name": "nost-feed-manager",
+  "productName": "Nostr Feed Manager",
   "version": "0.1.0",
   "description": "A friendly Linux desktop app for managing Nostr profiles and publishing text notes.",
   "private": true,
@@ -46,6 +46,7 @@
   },
   "build": {
     "appId": "dev.nostfeedmanager.desktop",
+    "productName": "Nostr Feed Manager",
     "directories": {
       "output": "release",
       "buildResources": "build"
@@ -57,8 +58,8 @@
     ],
     "extraResources": [
       {
-        "from": "../target/release/keynectr",
-        "to": "keynectr"
+        "from": "../target/release/nostr-manager-backend",
+        "to": "nostr-manager-backend"
       }
     ],
     "linux": {
@@ -66,7 +67,7 @@
         "dir"
       ],
       "category": "Network",
-      "executableName": "keynectr"
+      "executableName": "nost-feed-manager"
     }
   }
 }
diff --git a/frontend/src/components/Sidebar.tsx b/frontend/src/components/Sidebar.tsx
index 4d06c24..3337ffb 100644
--- a/frontend/src/components/Sidebar.tsx
+++ b/frontend/src/components/Sidebar.tsx
@@ -32,7 +32,8 @@ export function Sidebar({ screen, onNavigate }: SidebarProps) {
           <Icon name="shield" size={22} />
         </span>
         <div>
-          <strong>Keynectr</strong>
+          <strong>Nostr Feed</strong>
+          <span className="sidebar-subtitle">Manager</span>
         </div>
       </div>
 
diff --git a/frontend/src/screens/HomeScreen.tsx b/frontend/src/screens/HomeScreen.tsx
index 31c38a3..d9c58dd 100644
--- a/frontend/src/screens/HomeScreen.tsx
+++ b/frontend/src/screens/HomeScreen.tsx
@@ -77,7 +77,7 @@ export function HomeScreen({ onNavigate, onCreateProfile }: HomeScreenProps) {
         <div className="screen-inner">
           <EmptyState
             icon={<Icon name="users" size={30} />}
-            title="Welcome to Keynectr"
+            title="Welcome to Nostr Feed Manager"
             description={
               <span>
                 You haven't created a profile yet. A Nostr profile is your identity on the public
diff --git a/frontend/src/screens/SettingsScreen.tsx b/frontend/src/screens/SettingsScreen.tsx
index 88d013f..ef714a0 100644
--- a/frontend/src/screens/SettingsScreen.tsx
+++ b/frontend/src/screens/SettingsScreen.tsx
@@ -161,7 +161,7 @@ export function SettingsScreen() {
             <dl className="info-list">
               <div>
                 <dt>Application</dt>
-                <dd>Keynectr v{state?.version ?? '?'}</dd>
+                <dd>Nostr Feed Manager v{state?.version ?? '?'}</dd>
               </div>
               <div>
                 <dt>Backend</dt>
diff --git a/frontend/src/styles.css b/frontend/src/styles.css
index beb19db..43946ff 100644
--- a/frontend/src/styles.css
+++ b/frontend/src/styles.css
@@ -1,5 +1,5 @@
 /* =========================================================================
-   Keynectr — design system
+   Nostr Feed Manager — design system
    Light/dark/system themes via `data-theme` on <html>.
    ========================================================================= */
 
diff --git a/frontend/src/test/App.test.tsx b/frontend/src/test/App.test.tsx
index aeb665b..a073116 100644
--- a/frontend/src/test/App.test.tsx
+++ b/frontend/src/test/App.test.tsx
@@ -15,7 +15,7 @@ describe('App', () => {
     const { user } = renderApp(backend);
     render(<App />);
 
-    expect(await screen.findByText('Welcome to Keynectr')).toBeInTheDocument();
+    expect(await screen.findByText('Welcome to Nostr Feed Manager')).toBeInTheDocument();
     expect(screen.getByRole('button', { name: /Create your first profile/i })).toBeInTheDocument();
     expect(screen.getByText(/A Nostr profile is your identity/i)).toBeInTheDocument();
 
diff --git a/frontend/src/test/HomeScreen.test.tsx b/frontend/src/test/HomeScreen.test.tsx
index 8b8572d..3e6d572 100644
--- a/frontend/src/test/HomeScreen.test.tsx
+++ b/frontend/src/test/HomeScreen.test.tsx
@@ -48,7 +48,7 @@ describe('HomeScreen', () => {
     const { onCreateProfile } = renderHome(backend);
     renderWithApp(<HomeScreen onNavigate={vi.fn()} onCreateProfile={onCreateProfile} />);
 
-    expect(await screen.findByText('Welcome to Keynectr')).toBeInTheDocument();
+    expect(await screen.findByText('Welcome to Nostr Feed Manager')).toBeInTheDocument();
     await userEvent
       .setup()
       .click(screen.getByRole('button', { name: /Create your first profile/i }));
diff --git a/frontend/src/test/SettingsScreen.test.tsx b/frontend/src/test/SettingsScreen.test.tsx
index 928f5aa..edadae8 100644
--- a/frontend/src/test/SettingsScreen.test.tsx
+++ b/frontend/src/test/SettingsScreen.test.tsx
@@ -11,7 +11,7 @@ describe('SettingsScreen', () => {
     renderWithApp(<SettingsScreen />);
 
     expect(
-      await screen.findByText('/home/user/.local/share/keynectr/profiles_vault.json'),
+      await screen.findByText('/home/user/.local/share/nost-feed-manager/profiles_vault.json'),
     ).toBeInTheDocument();
     expect(screen.getByText('Storage is not encrypted')).toBeInTheDocument();
   });
@@ -61,7 +61,7 @@ describe('SettingsScreen', () => {
     installFakeBackend(backend);
     renderWithApp(<SettingsScreen />);
 
-    expect(await screen.findByText(/Keynectr v/)).toBeInTheDocument();
+    expect(await screen.findByText(/Nostr Feed Manager v/)).toBeInTheDocument();
     expect(screen.getByText('Rust (nostr-sdk)')).toBeInTheDocument();
   });
 });
diff --git a/frontend/src/test/apiMock.ts b/frontend/src/test/apiMock.ts
index c5de46c..79efe3e 100644
--- a/frontend/src/test/apiMock.ts
+++ b/frontend/src/test/apiMock.ts
@@ -35,8 +35,8 @@ export function makeState(overrides?: Partial<AppState>): AppState {
   };
   return {
     version: '0.1.0',
-    vault_path: '/home/user/.local/share/keynectr/profiles_vault.json',
-    settings_path: '/home/user/.local/share/keynectr/settings.json',
+    vault_path: '/home/user/.local/share/nost-feed-manager/profiles_vault.json',
+    settings_path: '/home/user/.local/share/nost-feed-manager/settings.json',
     encrypted_storage: false,
     vault_locked: false,
     migrated_from: null,
@@ -188,7 +188,7 @@ export function createApiMock(initial: AppState = makeState()): ApiMock {
       },
     ),
     backupNow: vi.fn(async () => ({
-      backup_path: '/home/user/.local/share/keynectr/profiles_vault.json.backup-1',
+      backup_path: '/home/user/.local/share/nost-feed-manager/profiles_vault.json.backup-1',
     })),
     setVaultPassword: vi.fn(async () => ({
       ...state,
diff --git a/src/ipc.rs b/src/ipc.rs
index e51c80c..84680a4 100644
--- a/src/ipc.rs
+++ b/src/ipc.rs
@@ -151,7 +151,7 @@ pub struct ReplyEnvelope {
 
 /// Run the JSON-lines IPC server on stdin/stdout.
 ///
-/// The Electron main process spawns `keynectr serve` and
+/// The Electron main process spawns `nostr-manager-backend serve` and
 /// exchanges one JSON object per line. Requests are processed sequentially so
 /// the shared state never sees concurrent mutations.
 pub async fn serve() -> Result<(), AppError> {
diff --git a/src/lib.rs b/src/lib.rs
index b489c08..fd7547f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -14,7 +14,4 @@ pub mod vault;
 pub use errors::AppError;
 
 /// Stable application-data directory name.
-pub const APP_DIR_NAME: &str = "keynectr";
-
-/// Previous application-data directory name, migrated automatically on first use.
-pub const LEGACY_APP_DIR_NAME: &str = "nost-feed-manager";
+pub const APP_DIR_NAME: &str = "nost-feed-manager";
diff --git a/src/main.rs b/src/main.rs
index 92cf91a..42b369d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,18 +1,18 @@
 use std::process::ExitCode;
 use std::sync::{Arc, Mutex};
 
-use keynectr::app::App;
-use keynectr::errors::{AppError, ErrorKind};
-use keynectr::ipc;
-use keynectr::profiles::{self, ProfileSummary};
-use keynectr::publish;
-use keynectr::relays;
-use keynectr::settings::Theme;
-use keynectr::signer::Signer;
-use keynectr::vault::{self, StoredProfile, Vault};
+use nostr_manager_backend::app::App;
+use nostr_manager_backend::errors::{AppError, ErrorKind};
+use nostr_manager_backend::ipc;
+use nostr_manager_backend::profiles::{self, ProfileSummary};
+use nostr_manager_backend::publish;
+use nostr_manager_backend::relays;
+use nostr_manager_backend::settings::Theme;
+use nostr_manager_backend::signer::Signer;
+use nostr_manager_backend::vault::{self, StoredProfile, Vault};
 
 const USAGE: &str = "\
-keynectr <command> [args...]
+nostr-manager-backend <command> [args...]
 
 Commands:
   create <label>                  Create a new profile
@@ -133,7 +133,7 @@ fn cli_list() -> Result<String, AppError> {
 fn cli_switch(args: &[String]) -> Result<String, AppError> {
     let npub = args
         .get(2)
-        .ok_or_else(|| AppError::config("Usage: keynectr switch <npub>"))?;
+        .ok_or_else(|| AppError::config("Usage: nostr-manager-backend switch <npub>"))?;
 
     let mut app = App::load()?;
     profiles::set_active(&mut app.vault, npub)?;
@@ -143,7 +143,9 @@ fn cli_switch(args: &[String]) -> Result<String, AppError> {
 
 async fn cli_publish(args: &[String]) -> Result<String, AppError> {
     if args.len() < 4 {
-        return Err(AppError::config("Usage: keynectr publish <npub> <content>"));
+        return Err(AppError::config(
+            "Usage: nostr-manager-backend publish <npub> <content>",
+        ));
     }
 
     let npub = &args[2];
@@ -167,7 +169,9 @@ async fn cli_publish(args: &[String]) -> Result<String, AppError> {
 
 fn cli_set_picture(args: &[String]) -> Result<String, AppError> {
     let [_, _, npub, url] = args else {
-        return Err(AppError::config("Usage: keynectr set-picture <npub> <url>"));
+        return Err(AppError::config(
+            "Usage: nostr-manager-backend set-picture <npub> <url>",
+        ));
     };
 
     let mut app = load_app_with_unlock()?;
@@ -190,7 +194,7 @@ fn cli_set_picture(args: &[String]) -> Result<String, AppError> {
 fn cli_publish_name(args: &[String]) -> Result<String, AppError> {
     let npub = args
         .get(2)
-        .ok_or_else(|| AppError::config("Usage: keynectr publish-name <npub>"))?;
+        .ok_or_else(|| AppError::config("Usage: nostr-manager-backend publish-name <npub>"))?;
 
     let app = load_app_with_unlock()?;
     let key = app.vault_key().copied();
@@ -223,7 +227,7 @@ async fn cli_feed(args: &[String]) -> Result<String, AppError> {
     let limit = rest
         .first()
         .and_then(|raw| raw.parse::<usize>().ok().filter(|n| *n > 0))
-        .unwrap_or(keynectr::feed::DEFAULT_LIMIT);
+        .unwrap_or(nostr_manager_backend::feed::DEFAULT_LIMIT);
 
     let app = App::load()?;
     let items = if contacts {
@@ -232,10 +236,10 @@ async fn cli_feed(args: &[String]) -> Result<String, AppError> {
             .active_profile
             .as_deref()
             .ok_or_else(AppError::no_active_profile)?;
-        let pubkey = keynectr::feed::owner_pubkey(npub)?;
-        keynectr::feed::contact_feed(&app.settings, limit, &pubkey.to_hex()).await?
+        let pubkey = nostr_manager_backend::feed::owner_pubkey(npub)?;
+        nostr_manager_backend::feed::contact_feed(&app.settings, limit, &pubkey.to_hex()).await?
     } else {
-        keynectr::feed::aggregate_feed(&app.settings, limit).await?
+        nostr_manager_backend::feed::aggregate_feed(&app.settings, limit).await?
     };
     if items.is_empty() {
         return Ok(if contacts {
@@ -270,7 +274,9 @@ fn shorten_note(content: &str) -> String {
 
 async fn cli_relays(args: &[String]) -> Result<String, AppError> {
     let sub = args.get(2).ok_or_else(|| {
-        AppError::config("Usage: keynectr relays <list|add|remove|enable|disable|test> [...]")
+        AppError::config(
+            "Usage: nostr-manager-backend relays <list|add|remove|enable|disable|test> [...]",
+        )
     })?;
 
     let mut app = App::load()?;
@@ -326,7 +332,7 @@ async fn cli_relays(args: &[String]) -> Result<String, AppError> {
 fn cli_settings(args: &[String]) -> Result<String, AppError> {
     let sub = args
         .get(2)
-        .ok_or_else(|| AppError::config("Usage: keynectr settings <get|set>"))?;
+        .ok_or_else(|| AppError::config("Usage: nostr-manager-backend settings <get|set>"))?;
 
     let mut app = App::load()?;
 
@@ -441,7 +447,7 @@ fn cli_unlock() -> Result<String, AppError> {
 fn cli_show_secret(args: &[String]) -> Result<String, AppError> {
     let npub = args
         .get(2)
-        .ok_or_else(|| AppError::config("Usage: keynectr show-secret <npub>"))?;
+        .ok_or_else(|| AppError::config("Usage: nostr-manager-backend show-secret <npub>"))?;
 
     let app = load_app_with_unlock()?;
     let revealed = profiles::reveal_secret_key(&app.vault, npub, app.vault_key())?;
@@ -456,7 +462,7 @@ fn cli_show_secret(args: &[String]) -> Result<String, AppError> {
 async fn cli_signer(args: &[String]) -> Result<String, AppError> {
     let sub = args
         .get(2)
-        .ok_or_else(|| AppError::config("Usage: keynectr signer <status|connect>"))?;
+        .ok_or_else(|| AppError::config("Usage: nostr-manager-backend signer <status|connect>"))?;
 
     match sub.as_str() {
         "status" => {
@@ -477,7 +483,7 @@ async fn cli_signer(args: &[String]) -> Result<String, AppError> {
                 ),
                 "In the GUI, the signer listens as long as the app is running. From here, run:"
                     .to_string(),
-                "  keynectr signer connect <nostrconnect://…>".to_string(),
+                "  nostr-manager-backend signer connect <nostrconnect://…>".to_string(),
                 "Sign/decrypt requests must be approved in the GUI signer screen.".to_string(),
             ]
             .join("\n"))
diff --git a/src/main.rs.backup b/src/main.rs.backup
new file mode 100644
index 0000000..1f3563b
--- /dev/null
+++ b/src/main.rs.backup
@@ -0,0 +1,194 @@
+use nostr_sdk::prelude::*;
+use serde::{Deserialize, Serialize};
+use std::env;
+use std::fs;
+use std::path::Path;
+use std::time::{SystemTime, UNIX_EPOCH};
+
+#[derive(Serialize, Deserialize, Clone)]
+struct Profile {
+    label: String,
+    public_key: String,
+    secret_key: String, // Stored as a plaintext hex string
+    created_at: u64,
+}
+
+const VAULT_FILE: &str = "profiles_vault.json";
+
+fn load_vault() -> Result<Vec<Profile>, String> {
+    if !Path::new(VAULT_FILE).exists() {
+        return Ok(Vec::new());
+    }
+
+    let content = fs::read_to_string(VAULT_FILE)
+        .map_err(|e| format!("Failed to read {VAULT_FILE}: {e}"))?;
+
+    if content.trim().is_empty() {
+        return Ok(Vec::new());
+    }
+
+    serde_json::from_str(&content)
+        .map_err(|e| format!("Failed to parse {VAULT_FILE}: {e}"))
+}
+
+fn save_vault(profiles: &[Profile]) -> Result<(), String> {
+    let content = serde_json::to_string_pretty(profiles)
+        .map_err(|e| format!("Failed to serialize profiles: {e}"))?;
+
+    fs::write(VAULT_FILE, content)
+        .map_err(|e| format!("Failed to write {VAULT_FILE}: {e}"))
+}
+
+fn unix_timestamp() -> Result<u64, String> {
+    SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .map(|duration| duration.as_secs())
+        .map_err(|e| format!("System clock error: {e}"))
+}
+
+#[tokio::main]
+async fn main() {
+    if let Err(error) = run().await {
+        eprintln!("Error: {error}");
+        std::process::exit(1);
+    }
+}
+
+async fn run() -> Result<(), String> {
+    let args: Vec<String> = env::args().collect();
+
+    let command = args.get(1).ok_or_else(|| {
+        [
+            "Usage: nostr-manager-backend <command> [args...]",
+            "Commands:",
+            "  create <label>",
+            "  list",
+            "  switch <npub>",
+            "  publish <npub> <content>",
+        ]
+        .join("\n")
+    })?;
+
+    let result = match command.as_str() {
+        "create" => {
+            let label = args
+                .get(2)
+                .cloned()
+                .unwrap_or_else(|| "New Profile".to_string());
+
+            let keys = Keys::generate();
+
+            // Explicit ::hex prevents conflict with nostr_sdk::prelude::*.
+            let secret_hex =
+                ::hex::encode(keys.secret_key().to_secret_bytes());
+
+            let public_key = keys
+                .public_key()
+                .to_bech32()
+                .map_err(|e| format!("Failed to encode public key: {e}"))?;
+
+            let profile = Profile {
+                label,
+                public_key: public_key.clone(),
+                secret_key: secret_hex,
+                created_at: unix_timestamp()?,
+            };
+
+            let mut profiles = load_vault()?;
+            profiles.push(profile);
+            save_vault(&profiles)?;
+
+            format!("Created profile: {public_key}")
+        }
+
+        "list" => {
+            let profiles = load_vault()?;
+
+            serde_json::to_string_pretty(&profiles)
+                .map_err(|e| format!("Failed to serialize profiles: {e}"))?
+        }
+
+        "switch" => {
+            let npub = args
+                .get(2)
+                .ok_or("Usage: nostr-manager-backend switch <npub>")?;
+
+            let profiles = load_vault()?;
+
+            if !profiles.iter().any(|profile| profile.public_key == *npub) {
+                return Err(format!("No stored profile found for {npub}"));
+            }
+
+            format!("Switched context to: {npub}")
+        }
+
+        "publish" => {
+            if args.len() < 4 {
+                return Err(
+                    "Usage: nostr-manager-backend publish <npub> <content>"
+                        .to_string(),
+                );
+            }
+
+            let npub = &args[2];
+            let content = args[3..].join(" ");
+
+            let profiles = load_vault()?;
+
+            let secret_hex = profiles
+                .iter()
+                .find(|profile| profile.public_key == *npub)
+                .map(|profile| profile.secret_key.clone())
+                .ok_or_else(|| format!("No stored profile found for {npub}"))?;
+
+            let secret_bytes = ::hex::decode(&secret_hex)
+                .map_err(|e| format!("Stored secret key is not valid hex: {e}"))?;
+
+            let secret_key = SecretKey::from_slice(&secret_bytes)
+                .map_err(|e| format!("Stored secret key is invalid: {e}"))?;
+
+            // Keys::from(secret_key) is incorrect for this nostr-sdk API.
+            let keys = Keys::new(secret_key);
+
+            let client = Client::new(keys.clone());
+
+            client
+                .add_relay("wss://relay.damus.io")
+                .await
+                .map_err(|e| format!("Failed to add Damus relay: {e}"))?;
+
+            client
+                .add_relay("wss://relay.nostr.band")
+                .await
+                .map_err(|e| format!("Failed to add nostr.band relay: {e}"))?;
+
+            client.connect().await;
+
+            let builder = EventBuilder::new(Kind::TextNote, content);
+
+            let event = builder
+                .sign(&keys)
+                .await
+                .map_err(|e| format!("Failed to sign event: {e}"))?;
+
+            client
+                .send_event(&event)
+                .await
+                .map_err(|e| format!("Failed to publish event: {e}"))?;
+
+            let event_id = event
+                .id
+                .to_bech32()
+                .map_err(|e| format!("Failed to encode event ID: {e}"))?;
+
+            format!("Published: {event_id}")
+        }
+
+        _ => {
+            return Err(format!("Unknown command: {command}"));
+        }
+    };
+
+    println!("{result}");
+    Ok(())
+}
diff --git a/src/vault.rs b/src/vault.rs
index 72e1f77..752afc1 100644
--- a/src/vault.rs
+++ b/src/vault.rs
@@ -3,7 +3,6 @@ use std::fs;
 use std::io::Write;
 use std::os::unix::fs::{OpenOptionsExt, PermissionsExt};
 use std::path::{Path, PathBuf};
-use std::sync::Once;
 use std::time::{SystemTime, UNIX_EPOCH};
 
 use base64::engine::general_purpose::STANDARD as B64;
@@ -11,6 +10,7 @@ use base64::Engine;
 use serde::{Deserialize, Serialize};
 
 use crate::errors::AppError;
+use crate::APP_DIR_NAME;
 
 /// Current vault schema version.
 pub const VAULT_VERSION: u32 = 2;
@@ -114,57 +114,17 @@ pub fn unix_timestamp() -> Result<u64, AppError> {
 /// Stable application-data directory for this app.
 ///
 /// Uses `$XDG_DATA_HOME` when set, otherwise `~/.local/share`.
-///
-/// The first call also migrates a previous-named data directory (from before
-/// the app was renamed) by moving it to the new location, so existing vaults,
-/// settings and backups are preserved without any user action.
 pub fn data_dir() -> PathBuf {
-    let dir = if let Ok(dir) = env::var("XDG_DATA_HOME") {
+    if let Ok(dir) = env::var("XDG_DATA_HOME") {
         if !dir.trim().is_empty() {
-            PathBuf::from(dir).join(crate::APP_DIR_NAME)
-        } else {
-            default_app_dir()
+            return PathBuf::from(dir).join(APP_DIR_NAME);
         }
-    } else {
-        default_app_dir()
-    };
-    static MIGRATED: Once = Once::new();
-    MIGRATED.call_once(|| migrate_legacy_app_dir(&dir));
-    dir
-}
-
-fn default_app_dir() -> PathBuf {
+    }
     let home = env::var("HOME").unwrap_or_else(|_| ".".to_string());
     PathBuf::from(home)
         .join(".local")
         .join("share")
-        .join(crate::APP_DIR_NAME)
-}
-
-/// Move the legacy application-data directory to the new name, once.
-///
-/// No-op when the target already exists or there is nothing to move; a failed
-/// move is reported rather than silently losing the data.
-fn migrate_legacy_app_dir(target: &Path) {
-    if target.exists() {
-        return;
-    }
-    let legacy = match &target.parent() {
-        Some(parent) => parent.join(crate::LEGACY_APP_DIR_NAME),
-        None => return,
-    };
-    if !legacy.exists() {
-        return;
-    }
-    if let Err(e) = fs::rename(&legacy, target) {
-        // Leave both in place: the app starts fresh at `target` and the old
-        // data stays untouched for manual recovery.
-        eprintln!(
-            "Warning: could not move {} to {}: {e}",
-            legacy.display(),
-            target.display()
-        );
-    }
+        .join(APP_DIR_NAME)
 }
 
 pub fn vault_path() -> PathBuf {
@@ -442,7 +402,7 @@ mod tests {
 
     fn temp_vault_path() -> PathBuf {
         let dir = env::temp_dir().join(format!(
-            "keynectr-test-{}-{}",
+            "nost-feed-manager-test-{}-{}",
             std::process::id(),
             COUNTER.fetch_add(1, Ordering::SeqCst)
         ));