Fix zoom multi

Make Wayland capture honest and replace the broad input group with least privilege (plan PR 10)

.gitattributes

@@ -0,0 +1,24 @@
+# Normalize line endings. Unix artifacts MUST stay LF: a shell script or
+# desktop/udev/spec file checked out with CRLF (e.g. on Windows with
+# core.autocrlf=true) fails to run on Linux — `#!/usr/bin/env bash\r` is a
+# "bad interpreter" error, and .desktop/.rules parsers choke on trailing \r.
+* text=auto eol=lf
+
+*.sh          text eol=lf
+*.desktop     text eol=lf
+*.rules       text eol=lf
+*.spec        text eol=lf
+*.xml         text eol=lf
+control.in    text eol=lf
+*.js          text eol=lf
+*.mjs         text eol=lf
+*.cjs         text eol=lf
+*.json        text eol=lf
+*.md          text eol=lf
+launcher.sh   text eol=lf
+
+# Binary assets must never be line-ending converted.
+*.png         binary
+*.ico         binary
+*.gz          binary
+*.traineddata binary

.github/workflows/release.yml

@@ -30,7 +30,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version-file: .nvmrc
           cache: npm
 
       - name: Install dependencies

README.md

@@ -73,7 +73,12 @@ using only Node built-ins.
 
 For a Windows installation, see [docs/windows_installation](docs/windows_installation.md) or for a developer/more in depth walkthrough, see [docs/GETTING_STARTED.md](docs/GETTING_STARTED.md).
 
-On **Linux** (⚠️ work in progress — X11 vs Wayland, enabling per-click capture, the screen-share prompt), see [docs/GETTING_STARTED_WITH_LINUX.md](docs/GETTING_STARTED_WITH_LINUX.md).
+On **Linux**, install from a package built for your distro family:
+apt-based (Debian/Ubuntu) → [docs/linux/apt.md](docs/linux/apt.md); dnf-based
+(Fedora) → [docs/linux/dnf.md](docs/linux/dnf.md). Wayland uses the XDG portal
+for screen capture and a hotkey/interval trigger (per-click capture with a
+marker needs X11 + xinput). The general developer walkthrough is
+[docs/GETTING_STARTED_WITH_LINUX.md](docs/GETTING_STARTED_WITH_LINUX.md).
 
 Requirements: Node.js 22.12+ and npm (pinned in `.nvmrc`; installs are
 refused on older Nodes because the packaging toolchain needs 22.12+).

ai_prompts/prompt4.md

@@ -1,3 +1,36 @@
+# After action report
+
+## Done — 10 PRs implemented, merged, and CI-green on both forges
+I worked through ai_prompts/prompt4.md and shipped PRs 1–10 of the plan's recommended sequence. Each was a focused branch, opened on both GitHub (Twest2/StepForge #5–#14) and Gitea (Tyler/autodoc #21–#30), verified green on GitHub CI (Ubuntu + Windows + dependency audit), merged with the same SHA to both forges, and the Gitea mirror closed with a merge note. Final state: main is byte-identical across local, GitHub, and Gitea (cc724f8), main CI is green, no open PRs, 289 unit tests pass (0 fail).
+
+## PR	What it fixed
+1	Pinned Node ≥22.12 (.nvmrc/engines); removed all runtime npm self-repair; refuse silent --no-sandbox; CI on pull_request + prod/full audits; made the click E2E stop hiding startup crashes as "SKIPPED"; remediated the form-data/undici advisories
+2	Closed the renderer privilege boundary: navigation/popup denial, sandboxed windows, per-channel IPC sender+argument validation, deny-by-default permissions (display capture only for the capture worker), intent-specific shell access replacing arbitrary shell:openPath
+3	Truthful local-first AI/privacy contract: raw keystroke capture off by default, AbortController timeouts + cancellation + concurrency + image-size limits, loopback-only Ollama unless explicitly opted in, honest docs + new docs/PRIVACY.md
+4	Optimistic revision fields + compare-and-swap (stale AI responses can't clobber edits), autosave keeps dirty state on failed saves, corrupt guides/steps quarantined instead of silently vanishing
+5	Region-capture nested-result + listener-leak bugs, single-owner power blocker, explicit click-source reporting (evdev fix), strict-mode skips instead of storing post-click shots, pathToFileURL, shutdown drain
+6	ZIP-bomb limits, transactional archive import, atomic snapshot restore, exclusive locks (O_EXCL + token), search index reconcile at startup, implemented the dead automatic-backup settings
+7	Platform adapter layer — window-context detection extracted to app/platform/{windows,linux,darwin}/; shared code no longer branches on process.platform; Linux capability diagnostics
+8	Production .deb (runtime-only staging, no dev tree, detected arch, desktop/MIME/icons, original generated icon set), apt setup scripts, real launcher; retired the old broken packager
+9	Production .rpm + dnf setup, shared stage-runtime.sh so both formats never drift
+10	Honest Wayland triggers (never promises per-click coordinates it can't deliver) + a least-privilege mouse-only udev rule replacing the broad input group keylogging surface; .gitattributes so Unix scripts don't break on CRLF
+I verified real behavior where possible: built and inspected an actual 107 MB .deb, ran the click self-test (markers 3/3, burst 8/8), and confirmed the sandboxed app boots.
+
+## One blocking item I did not act on — the license (needs your decision)
+The plan calls this a legal release blocker that an implementation agent must not guess, and I agree. The repo currently contradicts itself:
+
+package.json → MPL-2.0 and CONTRIBUTING requires MPL-2.0 + DCO sign-off (permits commercial use)
+docs/LICENSE + README §License → Creative Commons Attribution-NonCommercial (forbids commercial use; also not a software license)
+there is no root LICENSE file
+MPL-2.0 and CC-BY-NC are mutually exclusive, and contributors have been signing off under a license the project doesn't actually ship. You need to pick one, then I can reconcile the SPDX field, root LICENSE, README, CONTRIBUTING, package payloads, and the About view in a single follow-up PR.
+
+## What remains (plan PRs 11–14 — larger, several need your input)
+Canonical blocks/callout-placement schema-v2 migration; lazy exports + Unicode font vendoring (needs a licensed-font choice); editor modularization + accessibility; and the signed reproducible release pipeline (needs signing keys). Also still open: the click self-test's arm/debounce scenarios fail on Linux — a pre-existing capture defect I surfaced honestly in PR 1 but didn't chase down (it needs on-device Linux capture debugging).
+
+Tell me your license choice and I'll do the reconciliation PR; tell me which of 11–14 to prioritize and I'll take it next.
+
+
+
 # StepForge comprehensive improvement plan
 
 This document is an implementation handoff for another coding agent. It is based on a repository-wide audit of commit `534a28e` on 2026-07-03. It is a plan, not authorization to make all changes in one unreviewable patch.

app/main.js

@@ -22,6 +22,7 @@ const { readLock } = require('../core/locks');
 const CaptureService = require('./capture');
 const { TextIntelService } = require('./text-intel');
 const { keepProcessesResponsive } = require('./win-power');
+const { zoomShortcutFromInputEvent } = require('./shortcut-utils');
 const security = require('./security');
 const PACKAGE_JSON = require(path.join(__dirname, '..', 'package.json'));
 
@@ -65,6 +66,10 @@ let templates;
 let capture;
 let textIntel;
 let mainWindow;
+let lastZoomShortcut = null;
+let canvasZoomActive = false;
+const UI_ZOOM_LEVEL_MIN = -8;
+const UI_ZOOM_LEVEL_MAX = 8;
 
 function reindex(guideId) {
   try {
@@ -87,6 +92,43 @@ function applyTheme() {
   nativeTheme.themeSource = settings.get('appearance') || 'system';
 }
 
+function dispatchZoomShortcut(kind) {
+  sendToRenderer('editor:zoom-shortcut', kind);
+}
+
+// Ctrl+=/Ctrl+-/Ctrl+0 zoom the step editor's canvas while a guide is open
+// there (dispatchZoomShortcut above); everywhere else — library, welcome,
+// dialogs — the same keys scale the whole window's UI like a browser.
+function applyUiZoom(kind) {
+  if (!mainWindow || mainWindow.isDestroyed()) return;
+  const wc = mainWindow.webContents;
+  if (kind === 'fit') {
+    wc.zoomLevel = 0;
+    return;
+  }
+  const delta = kind === 'in' ? 1 : kind === 'out' ? -1 : 0;
+  if (!delta) return;
+  wc.zoomLevel = Math.max(UI_ZOOM_LEVEL_MIN, Math.min(UI_ZOOM_LEVEL_MAX, wc.zoomLevel + delta));
+}
+
+// A single physical keypress reaches here twice — once via the global
+// accelerator registration, once via before-input-event — plus multiple
+// accelerator spellings can match the same key on some layouts. Collapse
+// same-kind repeats within 50ms so one keypress is one zoom step.
+function handleZoomShortcut(kind) {
+  if (!kind) return;
+  const now = Date.now();
+  if (lastZoomShortcut && lastZoomShortcut.kind === kind && (now - lastZoomShortcut.at) < 50) {
+    return;
+  }
+  lastZoomShortcut = { kind, at: now };
+  if (canvasZoomActive) {
+    dispatchZoomShortcut(kind);
+  } else {
+    applyUiZoom(kind);
+  }
+}
+
 function createWindow() {
   mainWindow = new BrowserWindow({
     width: 1280,
@@ -113,6 +155,16 @@ function createWindow() {
   // away from it and every popup is denied, so no other document can run
   // with this window's preload bridge.
   security.installWindowSecurity(mainWindow, 'main');
+  mainWindow.webContents.on('before-input-event', (event, input) => {
+    // Electron reports both the key-down and key-up as separate
+    // before-input-event calls; only act on the down edge or every tap
+    // fires the shortcut twice regardless of the dedupe window below.
+    if (input.type !== 'keyDown') return;
+    const kind = zoomShortcutFromInputEvent(input);
+    if (!kind) return;
+    event.preventDefault();
+    handleZoomShortcut(kind);
+  });
   mainWindow.loadFile(path.join(__dirname, 'renderer', 'index.html'));
   mainWindow.once('ready-to-show', () => {
     mainWindow.show();
@@ -248,6 +300,19 @@ function createWindow() {
             }
           };
 
+          const waitClickBackendReady = async () => {
+            for (let i = 0; i < 240; i++) {
+              const streamReady = Boolean(
+                capture.streamBackend
+                && typeof capture.streamBackend.isActive === 'function'
+                && capture.streamBackend.isActive(),
+              );
+              if (streamReady || capture.frameLoopRunning) return true;
+              await new Promise((res) => setTimeout(res, 50));
+            }
+            return false;
+          };
+
           // Third scenario: the real "Start recording" path. armRecording
           // warms the recorder while the window is visible and only arms the
           // session once it hides; the first click *after* arming must get a
@@ -268,6 +333,12 @@ function createWindow() {
           const warmupClicks = store.getGuide(armGuide.guideId).stepsOrder.length;
           capture.onOsClick(Date.now(), toPhysical({ x: bounds.x + 100, y: bounds.y + 100 }), 'button-1');
           await waitArmed();
+          if (!await waitClickBackendReady()) {
+            throw new Error('arm selftest backend never became ready');
+          }
+          await new Promise((res) => setTimeout(res, 1500));
+          if (mainWindow.isVisible()) mainWindow.hide();
+          await new Promise((res) => setTimeout(res, 200));
           const armPoint = {
             x: Math.round(bounds.x + bounds.width * 0.4),
             y: Math.round(bounds.y + bounds.height * 0.4),
@@ -295,6 +366,12 @@ function createWindow() {
           capture.togglePause(false);
           await capture.startClickFrameBackend();
           await waitArmed();
+          if (!await waitClickBackendReady()) {
+            throw new Error('debounce selftest backend never became ready');
+          }
+          await new Promise((res) => setTimeout(res, 1500));
+          if (mainWindow.isVisible()) mainWindow.hide();
+          await new Promise((res) => setTimeout(res, 200));
           await new Promise((res) => setTimeout(res, 300));
           const dbPoint = {
             x: Math.round(bounds.x + bounds.width * 0.55),
@@ -365,6 +442,27 @@ function createWindow() {
 
 function registerHotkeys() {
   globalShortcut.unregisterAll();
+  const zoomBindings = [
+    ['CommandOrControl+Plus', 'in'],
+    ['CommandOrControl+Shift+=', 'in'],
+    ['CommandOrControl+=', 'in'],
+    ['CommandOrControl+numadd', 'in'],
+    ['CommandOrControl+-', 'out'],
+    ['CommandOrControl+Minus', 'out'],
+    ['CommandOrControl+numsub', 'out'],
+    ['CommandOrControl+0', 'fit'],
+    ['CommandOrControl+num0', 'fit'],
+  ];
+  for (const [accel, kind] of zoomBindings) {
+    try {
+      if (globalShortcut.register(accel, () => handleZoomShortcut(kind))) {
+        // Keep registering the other spellings so keyboards with different
+        // plus/minus translations still land on the same action.
+      }
+    } catch {
+      // Invalid accelerators must not break startup.
+    }
+  }
   const accel = settings.get('capture.hotkeyCapture');
   const pauseAccel = settings.get('capture.hotkeyPauseResume');
   try {
@@ -399,6 +497,14 @@ function setupIpc() {
     getMainWebContents: () => (mainWindow && !mainWindow.isDestroyed() ? mainWindow.webContents : null),
   });
   const c = security.check;
+
+  // The renderer reports whether the step editor (with a guide open) is the
+  // visible screen, so Ctrl+=/Ctrl+-/Ctrl+0 can pick canvas zoom vs UI zoom.
+  ipcMain.on('editor:canvas-zoom-active', (event, active) => {
+    if (!trustedSender(event)) return;
+    canvasZoomActive = Boolean(active);
+  });
+
   const IMAGE_BUDGET = 256 * 1024 * 1024; // channels that carry base64 PNGs
   const h = (channel, fn, opts = {}) => {
     const { maxChars = 2 * 1024 * 1024, validate = null } = opts;
@@ -899,6 +1005,15 @@ function setupIpc() {
     dataDir: store.root,
     platform: process.platform,
   }));
+  // Platform capture-capability profile (session type, portal/PipeWire,
+  // xinput, click source, actionable messages) for the diagnostics UI, plus
+  // the honest active trigger for this machine and settings.
+  h('platform:capabilities', () => {
+    const platform = require('./platform');
+    const caps = platform.detectCapabilities();
+    const activeTrigger = platform.chooseCaptureTrigger(caps, settings.get('capture.fallbackTrigger') || 'interval');
+    return { ...caps, activeTrigger };
+  });
 }
 
 // ---- lifecycle --------------------------------------------------------------

app/platform/darwin/window-context.js

@@ -0,0 +1,43 @@
+'use strict';
+
+const { execFileSync } = require('node:child_process');
+
+/**
+ * macOS WindowContextProvider using AppleScript / System Events. Extracted
+ * verbatim from text-intel.js. macOS is not a primary support target, but the
+ * adapter is kept so the shared code has no `process.platform` branch and the
+ * behavior is preserved where it exists. Never throws.
+ */
+function createDarwinWindowContextProvider() {
+  return {
+    async collect() {
+      const script = `
+      set appName to ""
+      set windowTitle to ""
+      tell application "System Events"
+        try
+          set frontApp to first application process whose frontmost is true
+          set appName to name of frontApp
+          try
+            set windowTitle to name of front window of frontApp
+          end try
+        end try
+      end tell
+      return appName & linefeed & windowTitle
+    `;
+      try {
+        const result = execFileSync('osascript', ['-e', script], {
+          encoding: 'utf8',
+          stdio: ['ignore', 'pipe', 'pipe'],
+          timeout: 1200,
+        }).trimEnd();
+        const [appName = '', windowTitle = ''] = result.split(/\r?\n/);
+        return { appName, windowTitle };
+      } catch {
+        return { appName: '', windowTitle: '' };
+      }
+    },
+  };
+}
+
+module.exports = { createDarwinWindowContextProvider };

app/platform/index.js

@@ -0,0 +1,81 @@
+'use strict';
+
+/**
+ * The single factory that selects a platform implementation. The rest of the
+ * app depends on the interfaces in ./interfaces.js and asks this module for a
+ * concrete adapter — it never branches on `process.platform` itself.
+ *
+ * As Linux runtime capture is implemented, its ClickSource / ScreenFrameSource
+ * adapters are added here; today this provides the WindowContextProvider for
+ * every platform and the Linux capability diagnostics.
+ */
+
+const { assertWindowContextProvider } = require('./interfaces');
+
+function detectPlatform(platform = process.platform) {
+  if (platform === 'win32') return 'windows';
+  if (platform === 'darwin') return 'darwin';
+  if (platform === 'linux') return 'linux';
+  return 'unsupported';
+}
+
+/**
+ * Build the WindowContextProvider for the current OS. `platform` is injectable
+ * so the selection logic is unit-testable off the target OS.
+ */
+function createWindowContextProvider({ platform = process.platform } = {}) {
+  const os = detectPlatform(platform);
+  let provider;
+  switch (os) {
+    case 'windows':
+      provider = require('./windows/window-context').createWindowsWindowContextProvider();
+      break;
+    case 'darwin':
+      provider = require('./darwin/window-context').createDarwinWindowContextProvider();
+      break;
+    case 'linux':
+      provider = require('./linux/window-context').createLinuxWindowContextProvider();
+      break;
+    default:
+      // Unsupported OS: a null-object provider so callers still work.
+      provider = { async collect() { return { appName: '', windowTitle: '' }; } };
+  }
+  return assertWindowContextProvider(provider);
+}
+
+/**
+ * Capability profile for the current OS (used by diagnostics UI). Only Linux
+ * has a rich profile today; other platforms report their OS and a capable
+ * baseline.
+ */
+function detectCapabilities({ platform = process.platform, env = process.env } = {}) {
+  const os = detectPlatform(platform);
+  if (os === 'linux') {
+    return require('./linux/diagnostics').detectLinuxCapabilities({ env });
+  }
+  return {
+    os,
+    sessionType: os,
+    isWayland: false,
+    clickCapture: os === 'windows' ? 'windows-hook' : os,
+    screenCapture: os,
+    messages: [],
+  };
+}
+
+/**
+ * The honest capture-trigger decision for the current capabilities. On Linux
+ * this defers to the diagnostics helper (which never promises per-click
+ * capture with coordinates on Wayland); other platforms have a fixed answer.
+ */
+function chooseCaptureTrigger(capabilities, userTriggerPreference = 'interval') {
+  if (capabilities && capabilities.os === 'linux') {
+    return require('./linux/diagnostics').chooseCaptureTrigger(capabilities, userTriggerPreference);
+  }
+  if (capabilities && capabilities.os === 'windows') {
+    return { trigger: 'click', clickSource: 'windows-hook', coordinates: true, marker: true, note: '' };
+  }
+  return { trigger: 'click', clickSource: capabilities ? capabilities.os : 'unavailable', coordinates: true, marker: true, note: '' };
+}
+
+module.exports = { detectPlatform, createWindowContextProvider, detectCapabilities, chooseCaptureTrigger };

app/platform/interfaces.js

@@ -0,0 +1,62 @@
+'use strict';
+
+/**
+ * Platform adapter interfaces (documentation + light runtime shape checks).
+ *
+ * The platform-neutral capture/text-intel code consumes these interfaces and
+ * never inspects `process.platform` itself. `app/platform/index.js` is the
+ * only module that selects a concrete implementation. New OS support is a new
+ * set of files under `app/platform/<os>/`, not more conditionals inside the
+ * shared code.
+ *
+ * ---------------------------------------------------------------------------
+ * WindowContextProvider
+ *   collect(osPoint?: {x,y}) -> Promise<{
+ *     appName, windowTitle,
+ *     elementLabel?, elementRole?, elementClass?, elementValue?
+ *   }>
+ *   Best-effort foreground window / clicked-element context. Never throws;
+ *   returns {} (or partial) when unavailable.
+ *
+ * ClickSource   (runtime capture — implemented incrementally per platform)
+ *   describe() -> { source, coordinates: boolean, keyboard: boolean }
+ *     source ∈ 'windows-hook' | 'x11' | 'evdev-x11' | 'evdev-wayland' |
+ *              'wayland-portal' | 'hotkey' | 'interval' | 'unavailable'
+ *
+ * PowerPolicy
+ *   setRecording(recording: boolean) -> void
+ *   Holds/releases OS power + throttling state for the recording lifecycle.
+ *
+ * PlatformCapabilities  (from index.detectCapabilities())
+ *   { os, sessionType, isWayland, hasXinput, canSandbox, ... }
+ * ---------------------------------------------------------------------------
+ */
+
+// Interface names, exported so adapters and tests can reference a single
+// source of truth for the contract identifiers.
+const INTERFACES = Object.freeze([
+  'WindowContextProvider',
+  'ClickSource',
+  'PowerPolicy',
+]);
+
+const CLICK_SOURCES = Object.freeze([
+  'windows-hook',
+  'x11',
+  'evdev-x11',
+  'evdev-wayland',
+  'wayland-portal',
+  'hotkey',
+  'interval',
+  'unavailable',
+]);
+
+/** Assert a value looks like a WindowContextProvider (has async collect()). */
+function assertWindowContextProvider(provider) {
+  if (!provider || typeof provider.collect !== 'function') {
+    throw new Error('platform: WindowContextProvider must implement collect()');
+  }
+  return provider;
+}
+
+module.exports = { INTERFACES, CLICK_SOURCES, assertWindowContextProvider };

app/platform/linux/diagnostics.js

@@ -0,0 +1,156 @@
+'use strict';
+
+const fs = require('node:fs');
+const { execFileSync } = require('node:child_process');
+
+/**
+ * Linux capture-capability diagnostics. Detects the session type, portal /
+ * PipeWire availability, xinput, readable input devices, and the sandbox
+ * situation, and turns them into an actionable capability profile the UI can
+ * show instead of console-only failures.
+ *
+ * Pure detection with injectable probes so it is unit-testable without a real
+ * desktop session.
+ */
+
+function defaultHasBinary(name) {
+  try {
+    execFileSync('which', [name], { stdio: 'pipe' });
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+function detectSessionType(env = process.env) {
+  const t = String(env.XDG_SESSION_TYPE || '').toLowerCase();
+  if (t === 'wayland' || t === 'x11') return t;
+  if (env.WAYLAND_DISPLAY) return 'wayland';
+  if (env.DISPLAY) return 'x11';
+  return 'unknown';
+}
+
+function detectLinuxCapabilities({
+  env = process.env,
+  hasBinary = defaultHasBinary,
+  existsSync = fs.existsSync,
+  readdirSync = fs.readdirSync,
+} = {}) {
+  const sessionType = detectSessionType(env);
+  const isWayland = sessionType === 'wayland';
+
+  // XDG Desktop Portal + PipeWire are how Wayland screen capture works.
+  const hasPortalBus = Boolean(env.DBUS_SESSION_BUS_ADDRESS);
+  let hasPipeWire = false;
+  try {
+    hasPipeWire = hasBinary('pipewire') || existsSync(`/run/user/${process.getuid ? process.getuid() : ''}/pipewire-0`);
+  } catch {
+    hasPipeWire = hasBinary('pipewire');
+  }
+
+  const hasXinput = hasBinary('xinput');
+  const hasXprop = hasBinary('xprop');
+
+  // Readable /dev/input event nodes gate the evdev click fallback.
+  let readableInputDevices = 0;
+  try {
+    for (const name of readdirSync('/dev/input')) {
+      if (!/^event\d+$/.test(name)) continue;
+      try { fs.accessSync(`/dev/input/${name}`, fs.constants.R_OK); readableInputDevices += 1; } catch { /* not readable */ }
+    }
+  } catch { /* /dev/input not present */ }
+
+  // Determine the click-capture profile for this session.
+  let clickCapture;
+  if (!isWayland && hasXinput) clickCapture = 'x11-xinput';
+  else if (readableInputDevices > 0) clickCapture = isWayland ? 'evdev-wayland' : 'evdev-x11';
+  else clickCapture = 'hotkey-or-interval-only';
+
+  const messages = [];
+  if (isWayland && !hasPipeWire) {
+    messages.push('Wayland screen capture needs PipeWire and the XDG Desktop Portal. Install pipewire and xdg-desktop-portal.');
+  }
+  if (isWayland && !hasPortalBus) {
+    messages.push('No D-Bus session bus detected; the screen-share portal cannot be reached.');
+  }
+  if (!isWayland && !hasXinput) {
+    messages.push('xinput not found: per-click capture with a marker is unavailable on X11 without it.');
+  }
+  if (clickCapture === 'hotkey-or-interval-only') {
+    messages.push('No global click source available. Recording falls back to a hotkey or interval trigger.');
+  }
+
+  return {
+    os: 'linux',
+    sessionType,
+    isWayland,
+    hasPortalBus,
+    hasPipeWire,
+    hasXinput,
+    hasXprop,
+    readableInputDevices,
+    clickCapture,
+    // Portal capture is the safe Wayland baseline; X11 can grab directly.
+    screenCapture: isWayland ? 'wayland-portal' : 'x11-direct',
+    messages,
+  };
+}
+
+/**
+ * Decide the honest capture trigger for a Linux capability profile. StepForge
+ * must never *promise* per-click capture with coordinates on Wayland, because
+ * the platform does not expose pointer position to apps. Returns the trigger,
+ * whether clicks carry coordinates, whether a marker can be drawn, and a
+ * user-facing note. `userTriggerPreference` is the capture.fallbackTrigger
+ * setting ('interval' | 'hotkey') used only when no click source exists.
+ */
+function chooseCaptureTrigger(capabilities, userTriggerPreference = 'interval') {
+  const caps = capabilities || {};
+  const click = caps.clickCapture;
+
+  if (click === 'x11-xinput') {
+    return {
+      trigger: 'click',
+      clickSource: 'x11',
+      coordinates: true,
+      marker: true,
+      note: 'Per-click capture with an accurate marker (X11 + xinput).',
+    };
+  }
+  if (click === 'evdev-x11') {
+    return {
+      trigger: 'click',
+      clickSource: 'evdev-x11',
+      coordinates: true,
+      marker: true,
+      note: 'Per-click capture via kernel input devices (X11, no xinput).',
+    };
+  }
+  if (click === 'evdev-wayland') {
+    // Wayland exposes button presses (via evdev, if permitted) but NOT pointer
+    // position, so a step is captured per click but without a marker. This is
+    // only reached when the user opted into the least-privilege device rule.
+    return {
+      trigger: 'click',
+      clickSource: 'evdev-wayland',
+      coordinates: false,
+      marker: false,
+      note: 'Per-click capture on Wayland has no pointer position, so no marker is drawn.',
+    };
+  }
+
+  // No global click source: the safe baseline is the user's chosen fallback.
+  const trigger = userTriggerPreference === 'hotkey' ? 'hotkey' : 'interval';
+  return {
+    trigger,
+    clickSource: trigger,
+    coordinates: false,
+    marker: false,
+    note: caps.isWayland
+      ? 'Wayland does not expose global clicks; recording uses your ' + trigger + ' trigger. '
+        + 'Screen sharing is requested once per recording via the portal.'
+      : 'No global click source available; recording uses your ' + trigger + ' trigger.',
+  };
+}
+
+module.exports = { detectLinuxCapabilities, detectSessionType, chooseCaptureTrigger };

app/platform/linux/window-context.js

@@ -0,0 +1,51 @@
+'use strict';
+
+const { execFileSync } = require('node:child_process');
+
+function hasBinary(name) {
+  try {
+    execFileSync('which', [name], { stdio: 'pipe' });
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+/**
+ * Linux (X11) WindowContextProvider using xprop on the active window. On
+ * Wayland xprop only sees XWayland clients, so context is best-effort; the
+ * portal-based capture path does not depend on it. Extracted verbatim from
+ * text-intel.js. Never throws.
+ */
+function createLinuxWindowContextProvider() {
+  return {
+    async collect() {
+      try {
+        if (!hasBinary('xprop')) return { appName: '', windowTitle: '' };
+        const active = execFileSync('xprop', ['-root', '_NET_ACTIVE_WINDOW'], {
+          encoding: 'utf8',
+          stdio: ['ignore', 'pipe', 'pipe'],
+          timeout: 1200,
+        });
+        const activeMatch = active.match(/window id # (0x[0-9a-fA-F]+)/);
+        if (!activeMatch) return { appName: '', windowTitle: '' };
+        const winId = activeMatch[1];
+        const details = execFileSync('xprop', ['-id', winId, '_NET_WM_NAME', 'WM_NAME', 'WM_CLASS'], {
+          encoding: 'utf8',
+          stdio: ['ignore', 'pipe', 'pipe'],
+          timeout: 1200,
+        });
+        const titleMatch = details.match(/(?:_NET_WM_NAME\(UTF8_STRING\)|WM_NAME\(STRING\)|WM_NAME\(UTF8_STRING\)) = "([^"]*)"/);
+        const classMatch = details.match(/WM_CLASS\(STRING\) = "([^"]*)"(?:, "([^"]*)")?/);
+        return {
+          appName: classMatch ? (classMatch[2] || classMatch[1] || '') : '',
+          windowTitle: titleMatch ? titleMatch[1] : '',
+        };
+      } catch {
+        return { appName: '', windowTitle: '' };
+      }
+    },
+  };
+}
+
+module.exports = { createLinuxWindowContextProvider, hasBinary };

app/platform/windows/window-context.js

@@ -0,0 +1,88 @@
+'use strict';
+
+const { execFile } = require('node:child_process');
+
+/**
+ * Windows WindowContextProvider. Reads the foreground window (Win32) and, when
+ * a click point is given, the UI Automation element under it. Best-effort:
+ * resolves {} on any failure. Extracted verbatim from text-intel.js so the
+ * shared code carries no `process.platform` branch.
+ */
+function createWindowsWindowContextProvider() {
+  return {
+    async collect(osPoint = null) {
+      const hasPoint = osPoint && Number.isFinite(osPoint.x) && Number.isFinite(osPoint.y);
+      const clickX = hasPoint ? Number(osPoint.x) : 0;
+      const clickY = hasPoint ? Number(osPoint.y) : 0;
+      const script = `
+      $clickX = ${clickX};
+      $clickY = ${clickY};
+      $elementLabel = '';
+      $elementRole = '';
+      $elementClass = '';
+      $elementProcessId = 0;
+      $elementValue = '';
+      if (${hasPoint ? '$true' : '$false'}) {
+        try {
+          Add-Type -AssemblyName UIAutomationClient,UIAutomationTypes,WindowsBase | Out-Null
+          $point = New-Object System.Windows.Point($clickX, $clickY);
+          $element = [System.Windows.Automation.AutomationElement]::FromPoint($point);
+          if ($element) {
+            $current = $element.Current;
+            $elementLabel = $current.Name;
+            $elementRole = $current.LocalizedControlType;
+            $elementClass = $current.ClassName;
+            $elementProcessId = $current.ProcessId;
+            try {
+              $valPattern = [System.Windows.Automation.ValuePattern]::Pattern;
+              if ($element.GetSupportedPatterns() -contains $valPattern) {
+                $elementValue = $element.GetCurrentPattern($valPattern).Current.Value;
+              }
+            } catch { }
+          }
+        } catch { }
+      }
+      Add-Type @"
+using System;
+using System.Runtime.InteropServices;
+using System.Text;
+public static class Win32 {
+  [DllImport("user32.dll")] public static extern IntPtr GetForegroundWindow();
+  [DllImport("user32.dll", CharSet = CharSet.Unicode)]
+  public static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count);
+  [DllImport("user32.dll")] public static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint processId);
+}
+"@;
+      $hWnd = [Win32]::GetForegroundWindow();
+      $sb = New-Object System.Text.StringBuilder 512;
+      [void][Win32]::GetWindowText($hWnd, $sb, $sb.Capacity);
+      $pid = 0;
+      [void][Win32]::GetWindowThreadProcessId($hWnd, [ref]$pid);
+      $proc = Get-Process -Id $pid -ErrorAction SilentlyContinue | Select-Object -First 1;
+      $out = [ordered]@{
+        appName = if ($proc) { $proc.ProcessName } else { '' };
+        windowTitle = $sb.ToString();
+        elementLabel = $elementLabel;
+        elementRole = $elementRole;
+        elementClass = $elementClass;
+        elementValue = $elementValue;
+        elementProcessId = $elementProcessId;
+        pid = $pid;
+      };
+      $out | ConvertTo-Json -Compress;
+    `;
+      return new Promise((resolve) => {
+        execFile('powershell.exe', ['-NoProfile', '-NonInteractive', '-ExecutionPolicy', 'Bypass', '-Command', script], {
+          encoding: 'utf8',
+          timeout: 4000,
+          windowsHide: true,
+        }, (err, stdout) => {
+          if (err) { resolve({}); return; }
+          try { resolve(JSON.parse(stdout.trim() || '{}')); } catch { resolve({}); }
+        });
+      });
+    },
+  };
+}
+
+module.exports = { createWindowsWindowContextProvider };

app/preload.js

@@ -67,6 +67,10 @@ const api = {
     onState: (fn) => ipcRenderer.on('capture:state', (e, payload) => fn(payload)),
     onStepUpdated: (fn) => ipcRenderer.on('step:updated', (e, payload) => fn(payload)),
   },
+  editor: {
+    onZoomShortcut: (fn) => ipcRenderer.on('editor:zoom-shortcut', (e, payload) => fn(payload)),
+    setCanvasZoomActive: (active) => ipcRenderer.send('editor:canvas-zoom-active', Boolean(active)),
+  },
   archive: {
     export: invoke('archive:export'),
     open: invoke('archive:open'),
@@ -107,6 +111,7 @@ const api = {
   },
   app: {
     info: invoke('app:info'),
+    platformCapabilities: invoke('platform:capabilities'),
   },
 };
 

app/renderer/dialogs.js

@@ -169,7 +169,14 @@ function makeHotkeyInput(value = '') {
   return wrap;
 }
 
-async function promptText({ title, label = 'Value', value = '', placeholder = '', multiline = false } = {}) {
+async function promptText({
+  title,
+  label = 'Value',
+  value = '',
+  placeholder = '',
+  multiline = false,
+  onInput = null,
+} = {}) {
   return new Promise((resolve) => {
     const field = multiline
       ? el('textarea', { rows: 6, placeholder }, value)
@@ -186,12 +193,20 @@ async function promptText({ title, label = 'Value', value = '', placeholder = ''
     });
 
     field.addEventListener('keydown', (e) => {
+      if (multiline && e.key === 'Enter') {
+        // Let the textarea keep the Enter key for a new line.
+        e.stopPropagation();
+        return;
+      }
       if (!multiline && e.key === 'Enter') {
         e.preventDefault();
         close();
         resolve(field.value);
       }
     });
+    field.addEventListener('input', () => {
+      if (typeof onInput === 'function') onInput(field.value);
+    });
 
     setTimeout(() => field.focus(), 0);
   });

app/renderer/editor.js

@@ -4,6 +4,7 @@
 
 const api = window.stepforge;
 const dialogs = window.StepForgeDialogs || {};
+const shortcuts = window.StepForgeShortcuts || {};
 
 const clone = (value) => JSON.parse(JSON.stringify(value));
 const BLOCK_KIND_ORDER = { text: 0, code: 1, table: 2 };
@@ -105,6 +106,24 @@ function isEditableTarget(target) {
   );
 }
 
+function zoomShortcutFromEvent(e) {
+  if (shortcuts.zoomShortcutFromKeyboardEvent) {
+    return shortcuts.zoomShortcutFromKeyboardEvent(e);
+  }
+
+  if (!(e.ctrlKey || e.metaKey)) return null;
+
+  const { key, code, shiftKey } = e;
+  if (key === '0' || code === 'Digit0' || code === 'Numpad0') return 'fit';
+  if (
+    key === '+' || key === '=' || key === 'Add' || key === 'Plus' ||
+    code === 'Equal' || code === 'NumpadAdd' ||
+    (key === '=' && shiftKey) || (code === 'Equal' && shiftKey)
+  ) return 'in';
+  if (key === '-' || key === '_' || key === 'Subtract' || key === 'Minus' || code === 'Minus' || code === 'NumpadSubtract') return 'out';
+  return null;
+}
+
 class GuideEditor {
   constructor({ root, onMetaChange = () => {}, onToast = toast, onBack = () => {} } = {}) {
     this.root = root;
@@ -141,6 +160,13 @@ class GuideEditor {
     this.saveStepDebounced = debounce(() => this.flushStep(), 180);
     this.saveGuideDebounced = debounce(() => this.flushGuide(), 180);
 
+    if (api.editor && typeof api.editor.onZoomShortcut === 'function') {
+      api.editor.onZoomShortcut((kind) => {
+        if (!this.active || !this.guide) return;
+        this.applyZoomShortcut(kind);
+      });
+    }
+
     this.onDocumentKeyDown = this.onDocumentKeyDown.bind(this);
     document.addEventListener('keydown', this.onDocumentKeyDown, true);
   }
@@ -152,6 +178,9 @@ class GuideEditor {
 
   setActive(active) {
     this.active = Boolean(active);
+    if (api.editor && typeof api.editor.setCanvasZoomActive === 'function') {
+      api.editor.setCanvasZoomActive(this.active);
+    }
     if (!this.active && this.guideId) {
       // Leaving the editor: flush pending debounced saves so navigation can
       // never drop the last edit (failures keep the dirty state and retry),
@@ -1182,7 +1211,6 @@ class GuideEditor {
     const typeSelect = makeSelect(selected.type, [
       'rect', 'oval', 'line', 'arrow', 'text', 'tooltip', 'number', 'blur', 'highlight', 'magnify', 'cursor',
     ].map((type) => ({ value: type, label: ANNOTATION_TYPE_LABELS[type] || type })));
-    const textInput = el('input', { type: 'text', value: selected.text || '', placeholder: 'Annotation text' });
     const valueInput = el('input', { type: 'number', value: Number.isFinite(selected.value) ? selected.value : '', placeholder: 'Value' });
     const strokeInput = el('input', { type: 'color', value: style.stroke || '#E5484D' });
     const fillInput = el('input', { type: 'color', value: style.fill && style.fill !== 'transparent' ? style.fill : '#ffffff' });
@@ -1218,9 +1246,17 @@ class GuideEditor {
     const fields = new Set(ANNOTATION_FIELDS[selected.type] || []);
     const strokeLabel = (selected.type === 'text' || selected.type === 'number') ? 'Color' : 'Stroke';
     const typeLabel = ANNOTATION_TYPE_LABELS[selected.type] || selected.type;
+    const textInput = fields.has('text')
+      ? el('textarea', {
+        rows: Math.max(3, Math.min(8, String(selected.text || '').split('\n').length)),
+        placeholder: 'Annotation text',
+        spellcheck: true,
+      })
+      : el('input', { type: 'text', value: selected.text || '', placeholder: 'Annotation text' });
+    if (fields.has('text')) textInput.value = selected.text || '';
 
     const rows = [labeledRow('Type', typeSelect)];
-    if (fields.has('text')) rows.push(labeledRow('Text', textInput));
+    if (fields.has('text')) rows.push(labeledRow('Text', textInput, { stacked: true }));
     if (fields.has('value')) rows.push(labeledRow('Value', valueInput));
     if (fields.has('stroke')) rows.push(labeledRow(strokeLabel, strokeInput));
     if (fields.has('fill')) rows.push(labeledRow('Fill', fillInput));
@@ -1348,6 +1384,22 @@ class GuideEditor {
     if (mode === 1.5) this.dom.zoom150Btn.classList.add('active');
   }
 
+  applyZoomShortcut(kind) {
+    if (kind === 'in') {
+      this.setZoom(Math.min(3, (Number(this.currentZoom) || 1) + 0.25));
+      return true;
+    }
+    if (kind === 'out') {
+      this.setZoom(Math.max(0.25, (Number(this.currentZoom) || 1) - 0.25));
+      return true;
+    }
+    if (kind === 'fit') {
+      this.setZoom('fit');
+      return true;
+    }
+    return false;
+  }
+
   pushCanvasHistory(recordOrLabel = 'change') {
     if (!this.currentStep) return;
     const record = recordOrLabel && typeof recordOrLabel === 'object'
@@ -2168,19 +2220,39 @@ class GuideEditor {
   async editAnnotationText(ann) {
     const step = this.currentStep;
     if (!step || !ann) return;
+    const originalText = ann.text ?? '';
+    const applyText = (nextText, { persist = true } = {}) => {
+      const selected = this.canvas.selected();
+      if (!selected) return;
+      selected.text = nextText;
+      step.annotations = clone(this.canvas.annotations || []);
+      this.pendingSave = true;
+      this.canvas.setAnnotations(step.annotations || []);
+      this.renderAnnotationPanel();
+      this.emitMeta();
+      if (persist) this.saveStepDebounced();
+    };
     const value = await dialogs.promptText({
       title: ann.type === 'tooltip' ? 'Edit tooltip' : 'Edit text',
       label: 'Text',
-      value: ann.text || '',
+      value: originalText,
       multiline: true,
+      onInput: applyText,
     });
-    if (value == null) return;
-    ann.text = value;
-    step.annotations = clone(step.annotations || []);
-    this.pendingSave = true;
+    this.saveStepDebounced.cancel();
+    if (value == null) {
+      const current = this.canvas.selected();
+      if ((current?.text ?? '') !== originalText) {
+        applyText(originalText, { persist: false });
+      }
+      await this.flushStep(step);
+      return;
+    }
+    const current = this.canvas.selected();
+    if ((current?.text ?? '') !== value) {
+      applyText(value, { persist: false });
+    }
     await this.flushStep(step);
-    this.renderAnnotationPanel();
-    this.emitMeta();
   }
 
   formatDescription(command, block = null) {
@@ -2227,6 +2299,12 @@ class GuideEditor {
 
   onDocumentKeyDown(e) {
     if (!this.active || !this.guide) return;
+    const zoomShortcut = zoomShortcutFromEvent(e);
+    if (zoomShortcut) {
+      e.preventDefault();
+      this.applyZoomShortcut(zoomShortcut);
+      return;
+    }
     if ((e.ctrlKey || e.metaKey) && e.key === '/' && !e.shiftKey) {
       e.preventDefault();
       this.openQuickActions();
@@ -2270,21 +2348,6 @@ class GuideEditor {
         if (next) this.selectStep(next.stepId);
         return;
       }
-      if ((e.ctrlKey || e.metaKey) && (e.key === '=' || e.key === '+')) {
-        e.preventDefault();
-        this.setZoom(Math.min(3, (Number(this.currentZoom) || 1) + 0.25));
-        return;
-      }
-      if ((e.ctrlKey || e.metaKey) && e.key === '-') {
-        e.preventDefault();
-        this.setZoom(Math.max(0.25, (Number(this.currentZoom) || 1) - 0.25));
-        return;
-      }
-      if ((e.ctrlKey || e.metaKey) && e.key === '0') {
-        e.preventDefault();
-        this.setZoom('fit');
-        return;
-      }
       // Copy / paste the selected annotation.
       if ((e.ctrlKey || e.metaKey) && e.key.toLowerCase() === 'c' && this.selectedAnnotationId) {
         e.preventDefault();

app/renderer/index.html

@@ -21,6 +21,7 @@
 <div id="modal-root"></div>
 <div id="toast-root"></div>
 <script src="util.js"></script>
+<script src="../shortcut-utils.js"></script>
 <script src="canvas.js"></script>
 <script src="dialogs.js"></script>
 <script src="editor.js"></script>

app/shortcut-utils.js

@@ -0,0 +1,55 @@
+'use strict';
+
+(function attachShortcutUtils(root, factory) {
+  const api = factory();
+  if (typeof module !== 'undefined' && module.exports) {
+    module.exports = api;
+  }
+  if (root) {
+    root.StepForgeShortcuts = api;
+  }
+})(typeof globalThis !== 'undefined' ? globalThis : this, () => {
+  function hasZoomModifier(source) {
+    return Boolean(source && (source.ctrlKey || source.metaKey || source.control || source.meta));
+  }
+
+  function zoomShortcutFromSource(source) {
+    if (!hasZoomModifier(source)) return null;
+
+    const key = String(source.key || '');
+    const code = String(source.code || '');
+    const shiftKey = Boolean(source.shiftKey || source.shift);
+
+    if (key === '0' || code === 'Digit0' || code === 'Numpad0') return 'fit';
+
+    if (
+      key === '+' || key === '=' || key === 'Add' || key === 'Plus' ||
+      code === 'Equal' || code === 'NumpadAdd' ||
+      (key === '=' && shiftKey) || (code === 'Equal' && shiftKey)
+    ) {
+      return 'in';
+    }
+
+    if (
+      key === '-' || key === '_' || key === 'Subtract' || key === 'Minus' ||
+      code === 'Minus' || code === 'NumpadSubtract'
+    ) {
+      return 'out';
+    }
+
+    return null;
+  }
+
+  function zoomShortcutFromKeyboardEvent(event) {
+    return zoomShortcutFromSource(event);
+  }
+
+  function zoomShortcutFromInputEvent(input) {
+    return zoomShortcutFromSource(input);
+  }
+
+  return {
+    zoomShortcutFromInputEvent,
+    zoomShortcutFromKeyboardEvent,
+  };
+});

app/text-intel.js

@@ -2,7 +2,6 @@
 
 const fs = require('node:fs');
 const path = require('node:path');
-const { execFileSync, execFile } = require('node:child_process');
 
 const {
   DEFAULT_CAPTURE_TITLES,
@@ -23,15 +22,6 @@ const OCR_CROP = {
   height: 220,
 };
 
-function hasBinary(name) {
-  try {
-    execFileSync('which', [name], { stdio: 'pipe' });
-    return true;
-  } catch {
-    return false;
-  }
-}
-
 function clamp(v, min, max) {
   return Math.min(max, Math.max(min, v));
 }
@@ -63,6 +53,7 @@ class TextIntelService {
     dataDir,
     fetchImpl = global.fetch,
     screenApi = null,
+    windowContextProvider = null,
   }) {
     this.store = store;
     this.settings = settings;
@@ -70,6 +61,10 @@ class TextIntelService {
     this.dataDir = dataDir;
     this.fetch = fetchImpl;
     this.screen = screenApi;
+    // OS-specific foreground-window/element detection is a platform adapter.
+    // This code no longer branches on process.platform; the factory selects it.
+    this.windowContext = windowContextProvider
+      || require('./platform').createWindowContextProvider();
     this.worker = null;
     this.workerPromise = null;
     this.workerQueue = Promise.resolve();
@@ -271,135 +266,13 @@ class TextIntelService {
 
   async collectForegroundWindowContext(osPoint = null) {
     try {
-      if (process.platform === 'win32') return this.collectWindowsWindowContext(osPoint);
-      if (process.platform === 'darwin') return this.collectMacWindowContext();
-      if (process.platform === 'linux') return this.collectLinuxWindowContext();
+      return await this.windowContext.collect(osPoint);
     } catch {
       // best effort only
+      return { appName: '', windowTitle: '' };
     }
-    return { appName: '', windowTitle: '' };
   }
 
-  async collectWindowsWindowContext(osPoint = null) {
-    const hasPoint = osPoint && Number.isFinite(osPoint.x) && Number.isFinite(osPoint.y);
-    const clickX = hasPoint ? Number(osPoint.x) : 0;
-    const clickY = hasPoint ? Number(osPoint.y) : 0;
-    const script = `
-      $clickX = ${clickX};
-      $clickY = ${clickY};
-      $elementLabel = '';
-      $elementRole = '';
-      $elementClass = '';
-      $elementProcessId = 0;
-      $elementValue = '';
-      if (${hasPoint ? '$true' : '$false'}) {
-        try {
-          Add-Type -AssemblyName UIAutomationClient,UIAutomationTypes,WindowsBase | Out-Null
-          $point = New-Object System.Windows.Point($clickX, $clickY);
-          $element = [System.Windows.Automation.AutomationElement]::FromPoint($point);
-          if ($element) {
-            $current = $element.Current;
-            $elementLabel = $current.Name;
-            $elementRole = $current.LocalizedControlType;
-            $elementClass = $current.ClassName;
-            $elementProcessId = $current.ProcessId;
-            try {
-              $valPattern = [System.Windows.Automation.ValuePattern]::Pattern;
-              if ($element.GetSupportedPatterns() -contains $valPattern) {
-                $elementValue = $element.GetCurrentPattern($valPattern).Current.Value;
-              }
-            } catch { }
-          }
-        } catch { }
-      }
-      Add-Type @"
-using System;
-using System.Runtime.InteropServices;
-using System.Text;
-public static class Win32 {
-  [DllImport("user32.dll")] public static extern IntPtr GetForegroundWindow();
-  [DllImport("user32.dll", CharSet = CharSet.Unicode)]
-  public static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count);
-  [DllImport("user32.dll")] public static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint processId);
-}
-"@;
-      $hWnd = [Win32]::GetForegroundWindow();
-      $sb = New-Object System.Text.StringBuilder 512;
-      [void][Win32]::GetWindowText($hWnd, $sb, $sb.Capacity);
-      $pid = 0;
-      [void][Win32]::GetWindowThreadProcessId($hWnd, [ref]$pid);
-      $proc = Get-Process -Id $pid -ErrorAction SilentlyContinue | Select-Object -First 1;
-      $out = [ordered]@{
-        appName = if ($proc) { $proc.ProcessName } else { '' };
-        windowTitle = $sb.ToString();
-        elementLabel = $elementLabel;
-        elementRole = $elementRole;
-        elementClass = $elementClass;
-        elementValue = $elementValue;
-        elementProcessId = $elementProcessId;
-        pid = $pid;
-      };
-      $out | ConvertTo-Json -Compress;
-    `;
-    return new Promise(resolve => {
-      execFile('powershell.exe', ['-NoProfile', '-NonInteractive', '-ExecutionPolicy', 'Bypass', '-Command', script], {
-        encoding: 'utf8',
-        timeout: 4000,
-        windowsHide: true,
-      }, (err, stdout) => {
-        if (err) { resolve({}); return; }
-        try { resolve(JSON.parse(stdout.trim() || '{}')); }
-        catch { resolve({}); }
-      });
-    });
-  }
-
-  collectMacWindowContext() {
-    const script = `
-      set appName to ""
-      set windowTitle to ""
-      tell application "System Events"
-        try
-          set frontApp to first application process whose frontmost is true
-          set appName to name of frontApp
-          try
-            set windowTitle to name of front window of frontApp
-          end try
-        end try
-      end tell
-      return appName & linefeed & windowTitle
-    `;
-    const result = execFileSync('osascript', ['-e', script], {
-      encoding: 'utf8',
-      stdio: ['ignore', 'pipe', 'pipe'],
-      timeout: 1200,
-    }).trimEnd();
-    const [appName = '', windowTitle = ''] = result.split(/\r?\n/);
-    return { appName, windowTitle };
-  }
-
-  collectLinuxWindowContext() {
-    if (!hasBinary('xprop')) return { appName: '', windowTitle: '' };
-    const active = execFileSync('xprop', ['-root', '_NET_ACTIVE_WINDOW'], {
-      encoding: 'utf8',
-      stdio: ['ignore', 'pipe', 'pipe'],
-      timeout: 1200,
-    });
-    const activeMatch = active.match(/window id # (0x[0-9a-fA-F]+)/);
-    if (!activeMatch) return { appName: '', windowTitle: '' };
-    const winId = activeMatch[1];
-    const details = execFileSync('xprop', ['-id', winId, '_NET_WM_NAME', 'WM_NAME', 'WM_CLASS'], {
-      encoding: 'utf8',
-      stdio: ['ignore', 'pipe', 'pipe'],
-      timeout: 1200,
-    });
-    const titleMatch = details.match(/(?:_NET_WM_NAME\(UTF8_STRING\)|WM_NAME\(STRING\)|WM_NAME\(UTF8_STRING\)) = "([^"]*)"/);
-    const classMatch = details.match(/WM_CLASS\(STRING\) = "([^"]*)"(?:, "([^"]*)")?/);
-    return {
-      appName: classMatch ? (classMatch[2] || classMatch[1] || '') : '',
-      windowTitle: titleMatch ? titleMatch[1] : '',
-    };
-  }
 
   async buildCaptureTitle({ mode, frame, clickPos, clickMeta = null }) {
     const ctx = await this.buildCaptureContext({ mode, frame, clickPos, clickMeta });

docs/GETTING_STARTED_WITH_LINUX.md

@@ -13,10 +13,11 @@ difference, how to get the best experience, and how to enable per-click capture.
 
 | | **X11 / "Ubuntu on Xorg"** | **Wayland (default on Ubuntu)** |
 |---|---|---|
-| Screenshot per click | ✅ Yes | ✅ Yes (needs `input` group) |
+| Screenshot per click | ✅ Yes | ⚙️ Optional (least-privilege mouse rule) |
 | Red circle on the click | ✅ Yes | ❌ No (Wayland hides the cursor position) |
 | "Share your screen" prompt | Never | Once per recording session |
-| Setup needed | None | Add yourself to the `input` group |
+| Default trigger | Per click | Global hotkey or timed interval |
+| Setup needed | None | None (per-click is opt-in, mice only) |
 
 **If you want the full Windows-like experience (click capture *with* the red
 marker), use an Xorg session — see [Option A](#option-a-best-experience--use-xorg).**
@@ -67,27 +68,30 @@ stream stays open until you stop recording.
 > If you never see steps appear, make sure you actually picked a screen and
 > clicked **Share** in that dialog.
 
-### Per-click capture (requires the `input` group)
+### Per-click capture (optional, least-privilege)
 
-By default on Wayland, StepForge cannot see your clicks, so it falls back to
-**capturing a screenshot every few seconds** (timed capture).
+By default on Wayland, StepForge cannot see your clicks, so it uses a **global
+hotkey or a timed interval** to capture (see below). This is the recommended,
+no-extra-permissions path.
 
-To get a screenshot **on every click** instead, give your user read access to
-the mouse devices by joining the `input` group:
+If you want a screenshot **on every click**, you can grant StepForge read
+access to your **mouse** devices. Do **not** use `sudo usermod -aG input`:
+joining the `input` group grants your user access to *all* input devices —
+**including keyboards** — permanently, on every session. That is a keylogging
+surface StepForge does not need.
+
+Instead, install the least-privilege udev rule, which grants your active
+session read access to **mouse devices only** (never keyboards), scoped to
+whoever is physically logged in:
 
 ```bash
-sudo usermod -aG input "$USER"
+bash scripts/linux/enable-click-capture.sh
 ```
 
-Then **log out and log back in** (group membership only applies to new sessions).
-Verify it took effect:
-
-```bash
-groups | tr ' ' '\n' | grep input    # should print: input
-```
-
-Now StepForge reads mouse buttons directly from the kernel (`/dev/input`) and
-captures a screenshot on each click.
+It shows you the exact rule and asks for confirmation before installing. Under
+the hood it uses a systemd `uaccess` ACL restricted to `ID_INPUT_MOUSE`
+devices — see [packaging/linux/common/60-stepforge-input.rules](../packaging/linux/common/60-stepforge-input.rules).
+Re-log in (or replug a USB mouse) for it to apply.
 
 > **No red marker on Wayland.** Even with per-click capture working, Wayland
 > does not tell apps *where* the pointer is, so StepForge cannot draw the circle
@@ -114,10 +118,16 @@ On launch StepForge chooses the best available click source:
 1. **Windows** — low-level mouse hook (position + timing).
 2. **X11** — `xinput` (position + timing → full red marker).
 3. **Linux evdev** (`/dev/input`) — button presses on X11 *and* Wayland, no
-   position on Wayland. Used when `xinput` can't see clicks (i.e. Wayland), if
-   you're in the `input` group.
-4. **Timed capture** — the always-works fallback (a screenshot every N seconds)
-   when no click source is available.
+   position on Wayland. Used when `xinput` can't see clicks (i.e. Wayland) and
+   only if you opted into the least-privilege mouse rule
+   (`scripts/linux/enable-click-capture.sh`).
+4. **Hotkey / timed capture** — the always-works fallback (the Capture hotkey,
+   or a screenshot every N seconds) when no click source is available. On
+   Wayland this is the default, and StepForge reports it honestly instead of
+   pretending clicks are captured.
+
+Open **Settings → Diagnostics** to see the detected session type, portal/
+PipeWire status, and the active capture trigger for your machine.
 
 Screen frames come from a single long-lived capture stream per recording, so
 clicks/timer ticks never re-open the screen-share dialog.
@@ -149,7 +159,9 @@ STEPFORGE_CAPTURE_LOG=1 npm start
 
 - `[stepforge] screen-capture stream active …` — the stream is up.
 - `[stepforge] per-click capture via evdev on N device(s) …` — clicks are wired up.
-- `[stepforge] no readable mouse input devices …` — you need the `input` group (see above).
+- `[stepforge] no readable mouse input devices …` — per-click capture is not
+  enabled; run `scripts/linux/enable-click-capture.sh` for the least-privilege
+  mouse rule, or just use the hotkey/interval trigger.
 
 **Harmless console noise.** Lines like `vaInitialize failed`, `Frame latency is
 negative`, and `StatusNotifierItem … already exported` come from Chromium/GNOME,

docs/linux/apt.md

@@ -0,0 +1,67 @@
+# StepForge on apt-based Linux (Debian / Ubuntu)
+
+This is the setup and packaging guide for **apt-based** distributions. Fedora
+and other dnf-based systems have a separate guide: [dnf.md](dnf.md).
+
+## Install from the .deb
+
+```bash
+sudo apt install ./stepforge_<version>_amd64.deb
+```
+
+apt pulls the required runtime libraries automatically (they are declared as
+`Depends`). The package installs:
+
+- the app and a fixed Electron runtime under `/opt/stepforge`,
+- the `stepforge` launcher at `/usr/bin/stepforge`,
+- a desktop entry, icons, and `.sfgz`/`.sfglt` file associations.
+
+Launch it from your application menu or run `stepforge`.
+
+### Sandbox
+
+The launcher runs **sandboxed**. On most modern kernels the Chromium
+user-namespace sandbox works out of the box; the package's `postinst` also
+makes the setuid `chrome-sandbox` helper usable as a fallback. StepForge will
+**not** silently launch unsandboxed — see the launcher's message if the
+sandbox is unavailable.
+
+## Install from the portable tarball
+
+```bash
+tar -xzf stepforge_<version>_linux-x64.tar.gz
+# Install the runtime libraries first (see below), then run:
+./usr/bin/stepforge         # or move opt/stepforge to /opt and use the launcher
+```
+
+The tarball includes the `/usr/bin/stepforge` launcher (unlike older builds).
+Install the runtime libraries with:
+
+```bash
+bash scripts/linux/apt/install-runtime-deps.sh
+```
+
+## Capture capabilities on apt systems
+
+- **X11**: full per-click capture with an accurate marker (needs `xinput`).
+- **Wayland**: screen capture via the XDG Desktop Portal + PipeWire; the
+  portal asks permission once per recording. Per-click capture with
+  coordinates is not exposed by Wayland, so recording uses a global hotkey or
+  interval trigger. StepForge reports the active trigger honestly.
+
+Run StepForge and open Settings → Diagnostics to see the detected session
+type, portal/PipeWire status, and the active capture profile.
+
+## Build the .deb yourself
+
+```bash
+bash scripts/linux/apt/install-build-deps.sh   # dpkg-dev, fakeroot, xvfb, …
+nvm install && nvm use                          # pinned Node 22 (see .nvmrc)
+npm ci
+npm run package:linux:deb                        # -> build/artifacts/*.deb + tarball + sha256
+```
+
+The builder stages **only** runtime files: the app code, a fixed Electron
+runtime, and production npm dependencies. It never copies the development
+`node_modules`, docs, prompts, or examples, and it fails if `node_modules` is
+missing rather than producing an unusable artifact.

docs/linux/dnf.md

@@ -0,0 +1,63 @@
+# StepForge on dnf-based Linux (Fedora / RHEL)
+
+This is the setup and packaging guide for **dnf-based** distributions. Debian,
+Ubuntu, and other apt-based systems have a separate guide:
+[apt.md](apt.md).
+
+## Install from the .rpm
+
+```bash
+sudo dnf install ./stepforge-<version>-1.<arch>.rpm
+```
+
+dnf pulls the required runtime libraries automatically (they are declared as
+`Requires`). The package installs:
+
+- the app and a fixed Electron runtime under `/opt/stepforge`,
+- the `stepforge` launcher at `/usr/bin/stepforge`,
+- a desktop entry, icons, and `.sfgz`/`.sfglt` file associations.
+
+Launch it from your application menu or run `stepforge`.
+
+### Sandbox
+
+The launcher runs **sandboxed**. On most modern kernels the Chromium
+user-namespace sandbox works out of the box; the package's `%post` also makes
+the setuid `chrome-sandbox` helper usable as a fallback. StepForge will **not**
+silently launch unsandboxed.
+
+## Install from the portable tarball
+
+The portable tarball (same one shipped for apt systems) includes the
+`/usr/bin/stepforge` launcher. Install the runtime libraries first:
+
+```bash
+bash scripts/linux/dnf/install-runtime-deps.sh
+tar -xzf stepforge_<version>_linux-x64.tar.gz
+./usr/bin/stepforge
+```
+
+## Capture capabilities on dnf systems
+
+- **X11**: full per-click capture with an accurate marker (needs `xinput`).
+- **Wayland** (Fedora's default): screen capture via the XDG Desktop Portal +
+  PipeWire; the portal asks permission once per recording. Per-click capture
+  with coordinates is not exposed by Wayland, so recording uses a global
+  hotkey or interval trigger. StepForge reports the active trigger honestly.
+
+Open Settings → Diagnostics in the app to see the detected session type,
+portal/PipeWire status, and the active capture profile.
+
+## Build the .rpm yourself
+
+```bash
+bash scripts/linux/dnf/install-build-deps.sh    # rpm-build, rpmdevtools, Xvfb, …
+nvm install && nvm use                           # pinned Node 22 (see .nvmrc)
+npm ci
+npm run package:linux:rpm                         # -> build/artifacts/*.rpm + sha256
+```
+
+The builder stages **only** runtime files (shared with the `.deb` builder via
+`packaging/linux/common/stage-runtime.sh`): the app code, a fixed Electron
+runtime, and production npm dependencies. It never copies the development
+`node_modules` and fails if `node_modules` is missing.

package.json

@@ -14,7 +14,10 @@
     "start": "node scripts/start-electron.js",
     "test": "node scripts/run-unit-tests.js",
     "sample": "node scripts/make-sample-guide.js",
+    "icons": "node scripts/make-icons.js",
     "package:windows": "node scripts/package-windows.js",
+    "package:linux:deb": "bash packaging/linux/debian/package.sh",
+    "package:linux:rpm": "bash packaging/linux/fedora/package.sh",
     "build": "bash scripts/build-release.sh",
     "verify": "bash scripts/verify.sh",
     "bootstrap": "bash scripts/bootstrap-offline.sh"

packaging/assets/stepforge.svg

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  StepForge application icon — original artwork.
+  A rising staircase of three blocks (the "steps" of a step-by-step guide)
+  over a rounded square, in the app's blue. No third-party assets.
+-->
+<svg xmlns="http://www.w3.org/2000/svg" width="256" height="256" viewBox="0 0 256 256">
+  <defs>
+    <linearGradient id="bg" x1="0" y1="0" x2="0" y2="1">
+      <stop offset="0" stop-color="#2563eb"/>
+      <stop offset="1" stop-color="#1e3a8a"/>
+    </linearGradient>
+  </defs>
+  <rect x="0" y="0" width="256" height="256" rx="56" fill="url(#bg)"/>
+  <!-- Three ascending steps -->
+  <g fill="#ffffff">
+    <rect x="52"  y="150" width="52" height="54" rx="8"/>
+    <rect x="102" y="116" width="52" height="88" rx="8"/>
+    <rect x="152" y="82"  width="52" height="122" rx="8"/>
+  </g>
+  <!-- Capture spark on the top step -->
+  <circle cx="178" cy="60" r="16" fill="#facc15"/>
+</svg>

packaging/linux/common/60-stepforge-input.rules

@@ -0,0 +1,19 @@
+# StepForge least-privilege input access (OPTIONAL, opt-in).
+#
+# Grants the user at the ACTIVE local session read/write access to MOUSE input
+# devices only, via systemd-logind's `uaccess` ACL. This is the least-privilege
+# alternative to joining the broad `input` group, which would grant access to
+# ALL input devices — including keyboards — for the user permanently, on every
+# session. StepForge never needs keystrokes, so this rule deliberately EXCLUDES
+# keyboards.
+#
+# Scope of what this grants:
+#   * only devices udev classifies as a mouse (ID_INPUT_MOUSE=1),
+#   * only when they are NOT also a keyboard (ID_INPUT_KEYBOARD!=1),
+#   * only to whoever is logged in at the physical seat (uaccess is
+#     session-scoped, not a permanent group membership).
+#
+# StepForge uses this only for the optional Wayland per-click *trigger* (button
+# presses, no coordinates). It is not required — the safe default is a global
+# hotkey or interval capture.
+SUBSYSTEM=="input", KERNEL=="event*", ENV{ID_INPUT_MOUSE}=="1", ENV{ID_INPUT_KEYBOARD}!="1", TAG+="uaccess"

packaging/linux/common/launcher.sh

@@ -0,0 +1,71 @@
+#!/usr/bin/env sh
+# StepForge launcher installed at /usr/bin/stepforge.
+#
+# Runs the packaged Electron runtime against the installed app at
+# /opt/stepforge. It NEVER installs or repairs anything at runtime and it does
+# NOT silently disable the Chromium sandbox: an unsandboxed launch requires the
+# explicit STEPFORGE_ALLOW_NO_SANDBOX=1 opt-in (development/CI only).
+
+set -eu
+
+APP_DIR=/opt/stepforge
+ELECTRON="$APP_DIR/node_modules/electron/dist/electron"
+SANDBOX_HELPER="$APP_DIR/node_modules/electron/dist/chrome-sandbox"
+
+if [ ! -x "$ELECTRON" ]; then
+  echo "stepforge: Electron runtime missing at $ELECTRON (reinstall the package)." >&2
+  exit 1
+fi
+
+cd "$APP_DIR" || exit 1
+
+# Linux screen capture: enable the PipeWire path for Wayland portals; harmless
+# on X11 where Ozone auto-selects.
+COMMON_ARGS="--enable-features=WebRTCPipeWireCapturer --ozone-platform-hint=auto"
+
+sandbox_ok() {
+  [ -e "$SANDBOX_HELPER" ] || return 1
+  helper_uid="$(stat -c '%u' "$SANDBOX_HELPER" 2>/dev/null || echo '')"
+  helper_mode="$(stat -c '%a' "$SANDBOX_HELPER" 2>/dev/null || echo '')"
+  [ "$helper_uid" = "0" ] || return 1
+  [ -n "$helper_mode" ] || return 1
+  # setuid bit set?
+  [ $(( $((8#$helper_mode)) & 04000 )) -ne 0 ] || return 1
+  return 0
+}
+
+userns_ok() {
+  # Namespaced sandbox works without the setuid helper on kernels that allow
+  # unprivileged user namespaces.
+  if [ -r /proc/sys/kernel/unprivileged_userns_clone ]; then
+    [ "$(cat /proc/sys/kernel/unprivileged_userns_clone)" = "1" ] && return 0 || return 1
+  fi
+  if [ -r /proc/sys/kernel/apparmor_restrict_unprivileged_userns ]; then
+    [ "$(cat /proc/sys/kernel/apparmor_restrict_unprivileged_userns)" = "0" ] && return 0 || return 1
+  fi
+  [ -e /proc/self/ns/user ] && return 0 || return 1
+}
+
+if sandbox_ok || userns_ok; then
+  exec "$ELECTRON" $COMMON_ARGS "$APP_DIR" "$@"
+fi
+
+if [ "${STEPFORGE_ALLOW_NO_SANDBOX:-}" = "1" ] || [ "${ELECTRON_DISABLE_SANDBOX:-}" = "1" ]; then
+  echo "stepforge: launching WITHOUT the Chromium sandbox (explicit opt-in)." >&2
+  exec "$ELECTRON" --no-sandbox $COMMON_ARGS "$APP_DIR" "$@"
+fi
+
+cat >&2 <<'MSG'
+stepforge: the Chromium sandbox is not available and StepForge will not launch
+unsandboxed by default.
+
+Fix one of the following:
+  * Make the setuid sandbox helper usable:
+      sudo chown root:root /opt/stepforge/node_modules/electron/dist/chrome-sandbox
+      sudo chmod 4755 /opt/stepforge/node_modules/electron/dist/chrome-sandbox
+  * Enable unprivileged user namespaces (kernel/sysctl dependent):
+      sudo sysctl -w kernel.unprivileged_userns_clone=1
+
+For development/CI only you may set STEPFORGE_ALLOW_NO_SANDBOX=1 to override.
+MSG
+exit 1

packaging/linux/common/stage-runtime.sh

@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+# Shared staging for the Linux packages. Populates $STAGE_ROOT with the FHS
+# layout common to the .deb and .rpm: a pruned runtime-only /opt/stepforge, the
+# launcher, desktop entry, icons, MIME registration, and the license.
+#
+# Distro-specific metadata (Depends vs Requires) and the packaging step
+# (dpkg-deb vs rpmbuild) stay in the per-distro builders. This file only
+# assembles the payload so the two never drift.
+#
+# Usage:  ROOT_DIR=<repo> STAGE_ROOT=<dir> bash stage-runtime.sh
+set -euo pipefail
+
+: "${ROOT_DIR:?ROOT_DIR must be set}"
+: "${STAGE_ROOT:?STAGE_ROOT must be set}"
+
+# A packaged app must contain a fixed runtime; never install at build time and
+# never ship without node_modules.
+if [ ! -d "$ROOT_DIR/node_modules/electron/dist" ]; then
+  echo "error: node_modules/electron is missing. Run 'npm ci' before packaging." >&2
+  exit 1
+fi
+
+APP_DIR="$STAGE_ROOT/opt/stepforge"
+mkdir -p "$APP_DIR/node_modules" \
+  "$STAGE_ROOT/usr/bin" \
+  "$STAGE_ROOT/usr/share/applications" \
+  "$STAGE_ROOT/usr/share/mime/packages"
+
+# --- application code (runtime only) ----------------------------------------
+for item in app core exporters package.json package-lock.json; do
+  cp -a "$ROOT_DIR/$item" "$APP_DIR/$item"
+done
+
+# --- runtime node_modules ----------------------------------------------------
+# The fixed Electron runtime (needed at runtime even though it is a dev dep):
+cp -a "$ROOT_DIR/node_modules/electron" "$APP_DIR/node_modules/electron"
+# Production npm dependencies (tesseract.js + language data + transitive):
+while IFS= read -r dep; do
+  [ -n "$dep" ] || continue
+  rel="${dep#"$ROOT_DIR"/}"
+  [ "$rel" != "$dep" ] || continue
+  [ -d "$dep" ] || continue
+  mkdir -p "$APP_DIR/$(dirname "$rel")"
+  cp -a "$dep" "$APP_DIR/$rel"
+done < <(cd "$ROOT_DIR" && npm ls --omit=dev --all --parseable 2>/dev/null | tail -n +2)
+
+# Guard: the development-only packaging toolchain must not have leaked in.
+if [ -d "$APP_DIR/node_modules/electron-builder" ] || [ -d "$APP_DIR/node_modules/app-builder-lib" ]; then
+  echo "error: build-only dependency leaked into the package payload." >&2
+  exit 1
+fi
+
+# --- launcher ----------------------------------------------------------------
+install -m 0755 "$ROOT_DIR/packaging/linux/common/launcher.sh" "$STAGE_ROOT/usr/bin/stepforge"
+
+# --- desktop entry, icons, MIME ---------------------------------------------
+install -m 0644 "$ROOT_DIR/packaging/linux/common/stepforge.desktop" "$STAGE_ROOT/usr/share/applications/stepforge.desktop"
+install -m 0644 "$ROOT_DIR/packaging/linux/common/stepforge-mime.xml" "$STAGE_ROOT/usr/share/mime/packages/stepforge.xml"
+for size in 16 32 48 64 128 256 512; do
+  icon="$ROOT_DIR/packaging/assets/icons/stepforge-${size}.png"
+  [ -f "$icon" ] || continue
+  dest="$STAGE_ROOT/usr/share/icons/hicolor/${size}x${size}/apps"
+  mkdir -p "$dest"
+  install -m 0644 "$icon" "$dest/stepforge.png"
+done

packaging/linux/common/stepforge-mime.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
+  <mime-type type="application/x-stepforge-guide">
+    <comment>StepForge guide archive</comment>
+    <glob pattern="*.sfgz"/>
+    <icon name="stepforge"/>
+  </mime-type>
+  <mime-type type="application/x-stepforge-template">
+    <comment>StepForge export template</comment>
+    <glob pattern="*.sfglt"/>
+    <icon name="stepforge"/>
+  </mime-type>
+</mime-info>

packaging/linux/common/stepforge.desktop

@@ -0,0 +1,13 @@
+[Desktop Entry]
+Type=Application
+Name=StepForge
+GenericName=Step-by-step guide capture
+Comment=Capture, annotate, and export step-by-step guides
+Exec=stepforge %U
+Icon=stepforge
+Terminal=false
+Categories=Office;Graphics;Utility;
+Keywords=documentation;screenshot;guide;capture;steps;
+StartupNotify=true
+StartupWMClass=StepForge
+MimeType=application/x-stepforge-guide;

packaging/linux/debian/control.in

@@ -0,0 +1,17 @@
+Package: stepforge
+Version: @VERSION@
+Section: utils
+Priority: optional
+Architecture: @ARCH@
+Depends: libnss3, libnspr4, libatk1.0-0, libatk-bridge2.0-0, libcups2, libgbm1, libasound2, libgtk-3-0, libxkbcommon0, libatspi2.0-0
+Recommends: xinput, x11-utils, xdg-desktop-portal, pipewire
+Maintainer: @MAINTAINER@
+Homepage: https://github.com/Twest2/StepForge
+Description: Local-first step-by-step guide capture and export tool
+ StepForge captures step-by-step workflows as screenshots, lets you annotate
+ and describe each step, and exports to Markdown, PDF, DOCX, PPTX, HTML, and
+ more. Local-first: no telemetry, with an optional user-configured local AI
+ integration.
+ .
+ This package bundles a fixed Electron runtime and only production
+ dependencies; it does not install anything at runtime.

packaging/linux/debian/package.sh

@@ -0,0 +1,97 @@
+#!/usr/bin/env bash
+# Build a production StepForge .deb (and a matching portable tarball) from a
+# pruned, runtime-only tree.
+#
+# Unlike the old scripts/package-linux.sh this does NOT copy the development
+# node_modules, docs, prompts, examples, or stale audit files; it stages only
+# the app code plus a runtime dependency set (the fixed Electron runtime and
+# production npm deps), a real desktop entry, icons, MIME registration, and a
+# license. Architecture is detected, not hardcoded.
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../.." && pwd)"
+cd "$ROOT_DIR"
+
+VERSION="$(node -p "require('./package.json').version")"
+MAINTAINER="${STEPFORGE_MAINTAINER:-StepForge <[email protected]>}"
+OUT_DIR="${STEPFORGE_PACKAGE_DIR:-$ROOT_DIR/build/artifacts}"
+mkdir -p "$OUT_DIR"
+
+# Map dpkg architecture to a Node-style label for the tarball name.
+DEB_ARCH="$(dpkg --print-architecture 2>/dev/null || echo amd64)"
+case "$DEB_ARCH" in
+  amd64) NODE_ARCH="x64" ;;
+  arm64) NODE_ARCH="arm64" ;;
+  *) NODE_ARCH="$DEB_ARCH" ;;
+esac
+
+WORK_DIR="$(mktemp -d "${OUT_DIR%/}/.deb.XXXXXX")"
+trap 'rm -rf "$WORK_DIR"' EXIT
+
+# Stage the shared runtime-only payload (fails if node_modules is missing).
+ROOT_DIR="$ROOT_DIR" STAGE_ROOT="$WORK_DIR" bash "$ROOT_DIR/packaging/linux/common/stage-runtime.sh"
+
+mkdir -p "$WORK_DIR/DEBIAN" "$WORK_DIR/usr/share/doc/stepforge"
+
+# --- license + docs pointer --------------------------------------------------
+if [ -f "$ROOT_DIR/LICENSE" ]; then
+  install -m 0644 "$ROOT_DIR/LICENSE" "$WORK_DIR/usr/share/doc/stepforge/copyright"
+elif [ -f "$ROOT_DIR/docs/LICENSE" ]; then
+  install -m 0644 "$ROOT_DIR/docs/LICENSE" "$WORK_DIR/usr/share/doc/stepforge/copyright"
+fi
+
+# --- DEBIAN control + maintainer scripts ------------------------------------
+sed -e "s/@VERSION@/$VERSION/" -e "s/@ARCH@/$DEB_ARCH/" -e "s#@MAINTAINER@#$MAINTAINER#" \
+  "$ROOT_DIR/packaging/linux/debian/control.in" > "$WORK_DIR/DEBIAN/control"
+
+cat > "$WORK_DIR/DEBIAN/postinst" <<'POSTINST'
+#!/bin/sh
+set -e
+# Make the Chromium setuid sandbox helper usable so the app launches sandboxed.
+HELPER=/opt/stepforge/node_modules/electron/dist/chrome-sandbox
+if [ -e "$HELPER" ]; then
+  chown root:root "$HELPER" || true
+  chmod 4755 "$HELPER" || true
+fi
+# Refresh desktop/MIME/icon caches (best effort).
+if command -v update-desktop-database >/dev/null 2>&1; then update-desktop-database -q /usr/share/applications || true; fi
+if command -v update-mime-database >/dev/null 2>&1; then update-mime-database /usr/share/mime || true; fi
+if command -v gtk-update-icon-cache >/dev/null 2>&1; then gtk-update-icon-cache -q /usr/share/icons/hicolor || true; fi
+exit 0
+POSTINST
+
+cat > "$WORK_DIR/DEBIAN/prerm" <<'PRERM'
+#!/bin/sh
+set -e
+exit 0
+PRERM
+
+cat > "$WORK_DIR/DEBIAN/postrm" <<'POSTRM'
+#!/bin/sh
+set -e
+if [ "$1" = "remove" ] || [ "$1" = "purge" ]; then
+  if command -v update-desktop-database >/dev/null 2>&1; then update-desktop-database -q /usr/share/applications || true; fi
+  if command -v update-mime-database >/dev/null 2>&1; then update-mime-database /usr/share/mime || true; fi
+  if command -v gtk-update-icon-cache >/dev/null 2>&1; then gtk-update-icon-cache -q /usr/share/icons/hicolor || true; fi
+fi
+exit 0
+POSTRM
+chmod 0755 "$WORK_DIR/DEBIAN/postinst" "$WORK_DIR/DEBIAN/prerm" "$WORK_DIR/DEBIAN/postrm"
+
+# --- build the .deb ----------------------------------------------------------
+DEB_FILE="$OUT_DIR/stepforge_${VERSION}_${DEB_ARCH}.deb"
+if command -v fakeroot >/dev/null 2>&1; then
+  fakeroot dpkg-deb --build "$WORK_DIR" "$DEB_FILE" >/dev/null
+else
+  dpkg-deb --build "$WORK_DIR" "$DEB_FILE" >/dev/null
+fi
+
+# --- portable tarball (INCLUDES the launcher, unlike the old script) ---------
+TAR_FILE="$OUT_DIR/stepforge_${VERSION}_linux-${NODE_ARCH}.tar.gz"
+tar -C "$WORK_DIR" -czf "$TAR_FILE" opt usr/bin/stepforge usr/share/applications usr/share/mime usr/share/icons
+
+# --- checksums ---------------------------------------------------------------
+( cd "$OUT_DIR" && sha256sum "$(basename "$DEB_FILE")" "$(basename "$TAR_FILE")" > "stepforge_${VERSION}_${DEB_ARCH}.sha256" )
+
+echo "$DEB_FILE"
+echo "$TAR_FILE"

packaging/linux/fedora/package.sh

@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+# Build a production StepForge .rpm from a pruned, runtime-only tree, mirroring
+# the .deb builder. Stages the shared payload via common/stage-runtime.sh, then
+# packages it with rpmbuild against a prebuilt BuildRoot (no compilation).
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../.." && pwd)"
+cd "$ROOT_DIR"
+
+VERSION="$(node -p "require('./package.json').version")"
+MAINTAINER="${STEPFORGE_MAINTAINER:-StepForge <[email protected]>}"
+OUT_DIR="${STEPFORGE_PACKAGE_DIR:-$ROOT_DIR/build/artifacts}"
+mkdir -p "$OUT_DIR"
+
+if ! command -v rpmbuild >/dev/null 2>&1; then
+  echo "error: rpmbuild is not installed. Run scripts/linux/dnf/install-build-deps.sh" >&2
+  exit 1
+fi
+
+# RPM arch label from the host.
+RPM_ARCH="$(rpm --eval '%{_arch}' 2>/dev/null || uname -m)"
+
+BUILD_ROOT="$(mktemp -d "${OUT_DIR%/}/.rpm.XXXXXX")"
+trap 'rm -rf "$BUILD_ROOT"' EXIT
+STAGE="$BUILD_ROOT/buildroot"
+mkdir -p "$STAGE"
+
+# Shared runtime-only payload (fails if node_modules is missing).
+ROOT_DIR="$ROOT_DIR" STAGE_ROOT="$STAGE" bash "$ROOT_DIR/packaging/linux/common/stage-runtime.sh"
+
+# License into the RPM's conventional location.
+mkdir -p "$STAGE/usr/share/licenses/stepforge"
+if [ -f "$ROOT_DIR/LICENSE" ]; then
+  install -m 0644 "$ROOT_DIR/LICENSE" "$STAGE/usr/share/licenses/stepforge/LICENSE"
+elif [ -f "$ROOT_DIR/docs/LICENSE" ]; then
+  install -m 0644 "$ROOT_DIR/docs/LICENSE" "$STAGE/usr/share/licenses/stepforge/LICENSE"
+else
+  # rpmbuild %license requires the file to exist; write a pointer if absent.
+  echo "See project LICENSE." > "$STAGE/usr/share/licenses/stepforge/LICENSE"
+fi
+
+# Materialize the spec with version/maintainer substituted.
+SPEC="$BUILD_ROOT/stepforge.spec"
+sed -e "s/@VERSION@/$VERSION/" -e "s#@MAINTAINER@#$MAINTAINER#" \
+  "$ROOT_DIR/packaging/linux/fedora/stepforge.spec" > "$SPEC"
+
+rpmbuild -bb \
+  --define "_topdir $BUILD_ROOT/rpmbuild" \
+  --define "_rpmdir $OUT_DIR" \
+  --define "_build_id_links none" \
+  --buildroot "$STAGE" \
+  --target "$RPM_ARCH" \
+  "$SPEC" >/dev/null
+
+# rpmbuild writes to $OUT_DIR/<arch>/<name>.rpm — surface the final path.
+RPM_FILE="$(find "$OUT_DIR" -name "stepforge-${VERSION}-1*.${RPM_ARCH}.rpm" -newer "$SPEC" | head -1)"
+if [ -z "$RPM_FILE" ]; then
+  RPM_FILE="$(find "$OUT_DIR" -name "stepforge-${VERSION}-1*.rpm" | head -1)"
+fi
+[ -n "$RPM_FILE" ] || { echo "error: rpmbuild did not produce an .rpm" >&2; exit 1; }
+
+# Checksum.
+( cd "$(dirname "$RPM_FILE")" && sha256sum "$(basename "$RPM_FILE")" > "$(basename "$RPM_FILE").sha256" )
+
+echo "$RPM_FILE"

packaging/linux/fedora/stepforge.spec

@@ -0,0 +1,69 @@
+# StepForge RPM spec. The payload is prebuilt into a staging BuildRoot by
+# packaging/linux/fedora/package.sh (which stages a pruned runtime tree), so
+# this spec only packages and declares metadata — it does not compile.
+#
+# Placeholders @VERSION@ / @MAINTAINER@ are substituted by package.sh.
+
+%global debug_package %{nil}
+%global __brp_check_rpaths %{nil}
+%define _build_id_links none
+
+Name:           stepforge
+Version:        @VERSION@
+Release:        1%{?dist}
+Summary:        Local-first step-by-step guide capture and export tool
+
+License:        MPL-2.0
+URL:            https://github.com/Twest2/StepForge
+
+# Runtime shared libraries (Chromium/Electron) + capture integration.
+Requires:       nss
+Requires:       nspr
+Requires:       atk
+Requires:       at-spi2-atk
+Requires:       cups-libs
+Requires:       gtk3
+Requires:       mesa-libgbm
+Requires:       alsa-lib
+Requires:       libxkbcommon
+Recommends:     xinput
+Recommends:     xdg-desktop-portal
+Recommends:     pipewire
+
+# The payload is architecture-specific (bundles the Electron binary).
+%description
+StepForge captures step-by-step workflows as screenshots, lets you annotate
+and describe each step, and exports to Markdown, PDF, DOCX, PPTX, HTML, and
+more. Local-first: no telemetry, with an optional user-configured local AI
+integration. This package bundles a fixed Electron runtime and only
+production dependencies; it does not install anything at runtime.
+
+%files
+/opt/stepforge
+/usr/bin/stepforge
+/usr/share/applications/stepforge.desktop
+/usr/share/mime/packages/stepforge.xml
+/usr/share/icons/hicolor/*/apps/stepforge.png
+%license /usr/share/licenses/stepforge/LICENSE
+
+%post
+# Make the Chromium setuid sandbox helper usable so the app launches sandboxed.
+HELPER=/opt/stepforge/node_modules/electron/dist/chrome-sandbox
+if [ -e "$HELPER" ]; then
+  chown root:root "$HELPER" || true
+  chmod 4755 "$HELPER" || true
+fi
+if command -v update-desktop-database >/dev/null 2>&1; then update-desktop-database -q /usr/share/applications || true; fi
+if command -v update-mime-database >/dev/null 2>&1; then update-mime-database /usr/share/mime || true; fi
+if command -v gtk-update-icon-cache >/dev/null 2>&1; then gtk-update-icon-cache -q /usr/share/icons/hicolor || true; fi
+
+%postun
+if [ "$1" = 0 ]; then
+  if command -v update-desktop-database >/dev/null 2>&1; then update-desktop-database -q /usr/share/applications || true; fi
+  if command -v update-mime-database >/dev/null 2>&1; then update-mime-database /usr/share/mime || true; fi
+  if command -v gtk-update-icon-cache >/dev/null 2>&1; then gtk-update-icon-cache -q /usr/share/icons/hicolor || true; fi
+fi
+
+%changelog
+* Fri Jul 03 2026 @MAINTAINER@ - @VERSION@-1
+- Production runtime-only package (pruned tree, fixed Electron runtime).

scripts/build-release.sh

@@ -14,7 +14,14 @@ mkdir -p "$BUILD_ROOT"
 
 bash "$ROOT_DIR/scripts/bootstrap-offline.sh"
 node "$ROOT_DIR/scripts/make-sample-guide.js" --root "$EXAMPLES_ROOT"
-STEPFORGE_PACKAGE_DIR="$ARTIFACT_DIR" bash "$ROOT_DIR/scripts/package-linux.sh" >/dev/null
+# Production Linux package: a pruned runtime tree with real desktop
+# integration. Requires node_modules (fails otherwise); never installs at
+# build time. Skipped only when the Electron runtime is genuinely absent.
+if [ -d "$ROOT_DIR/node_modules/electron/dist" ]; then
+  STEPFORGE_PACKAGE_DIR="$ARTIFACT_DIR" bash "$ROOT_DIR/packaging/linux/debian/package.sh" >/dev/null
+else
+  echo "[build-release] skipping Linux .deb: node_modules/electron missing (run npm ci)" >&2
+fi
 
 BUILD_ROOT="$BUILD_ROOT" \
 ARTIFACT_DIR="$ARTIFACT_DIR" \

scripts/linux/apt/install-build-deps.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+# Install the BUILD toolchain for producing StepForge packages on apt-based
+# systems. These are for DEVELOPERS/packagers only and are never shipped inside
+# the end-user package.
+set -euo pipefail
+
+if ! command -v apt-get >/dev/null 2>&1; then
+  echo "This script is for apt-based systems (Debian/Ubuntu)." >&2
+  exit 1
+fi
+
+SUDO=""
+if [ "$(id -u)" -ne 0 ]; then SUDO="sudo"; fi
+
+PACKAGES=(
+  dpkg-dev fakeroot   # build the .deb
+  desktop-file-utils  # validate the .desktop entry
+  ca-certificates     # npm ci over https
+  xvfb                # headless smoke test under Xvfb
+)
+
+echo "Installing StepForge build dependencies via apt..."
+$SUDO apt-get update
+$SUDO apt-get install -y --no-install-recommends "${PACKAGES[@]}"
+
+cat <<'MSG'
+Done. Also install the pinned Node toolchain (see .nvmrc — Node 22.12+):
+  nvm install && nvm use     # or another Node 22 LTS install method
+Then, from the repo root:
+  npm ci
+  npm run package:linux:deb
+MSG

scripts/linux/apt/install-runtime-deps.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+# Install the RUNTIME libraries StepForge needs on apt-based systems
+# (Debian/Ubuntu). These are the shared libraries the packaged Electron runtime
+# links against, plus the X11/portal integration used for capture. This is for
+# END USERS installing from the tarball; the .deb declares the same set as
+# Depends so apt pulls them automatically.
+set -euo pipefail
+
+if ! command -v apt-get >/dev/null 2>&1; then
+  echo "This script is for apt-based systems (Debian/Ubuntu). Use the dnf script on Fedora." >&2
+  exit 1
+fi
+
+SUDO=""
+if [ "$(id -u)" -ne 0 ]; then SUDO="sudo"; fi
+
+PACKAGES=(
+  # Chromium/Electron shared libraries
+  libnss3 libnspr4 libatk1.0-0 libatk-bridge2.0-0 libcups2 libdrm2
+  libgtk-3-0 libgbm1 libasound2 libxkbcommon0 libatspi2.0-0
+  libxcomposite1 libxdamage1 libxfixes3 libxrandr2 libxshmfence1
+  # X11 per-click capture (marker-accurate) — X11 sessions only
+  xinput x11-utils
+  # Wayland screen-share via the XDG portal + PipeWire
+  xdg-desktop-portal pipewire
+)
+
+echo "Installing StepForge runtime dependencies via apt..."
+$SUDO apt-get update
+$SUDO apt-get install -y --no-install-recommends "${PACKAGES[@]}"
+echo "Done. StepForge runtime dependencies are installed."

scripts/linux/dnf/install-build-deps.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+# Install the BUILD toolchain for producing StepForge packages on dnf-based
+# systems (Fedora/RHEL). For DEVELOPERS/packagers only; never shipped inside
+# the end-user package.
+set -euo pipefail
+
+if ! command -v dnf >/dev/null 2>&1; then
+  echo "This script is for dnf-based systems (Fedora/RHEL)." >&2
+  exit 1
+fi
+
+SUDO=""
+if [ "$(id -u)" -ne 0 ]; then SUDO="sudo"; fi
+
+PACKAGES=(
+  rpm-build rpmdevtools   # build the .rpm
+  desktop-file-utils      # validate the .desktop entry
+  ca-certificates         # npm ci over https
+  xorg-x11-server-Xvfb    # headless smoke test under Xvfb
+)
+
+echo "Installing StepForge build dependencies via dnf..."
+$SUDO dnf install -y "${PACKAGES[@]}"
+
+cat <<'MSG'
+Done. Also install the pinned Node toolchain (see .nvmrc — Node 22.12+):
+  nvm install && nvm use     # or another Node 22 LTS install method
+Then, from the repo root:
+  npm ci
+  npm run package:linux:rpm
+MSG

scripts/linux/dnf/install-runtime-deps.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+# Install the RUNTIME libraries StepForge needs on dnf-based systems (Fedora,
+# RHEL/derivatives). These are the shared libraries the packaged Electron
+# runtime links against, plus the X11/portal integration used for capture.
+# For END USERS installing from the tarball; the .rpm declares the same set as
+# Requires so dnf pulls them automatically.
+set -euo pipefail
+
+if ! command -v dnf >/dev/null 2>&1; then
+  echo "This script is for dnf-based systems (Fedora/RHEL). Use the apt script on Debian/Ubuntu." >&2
+  exit 1
+fi
+
+SUDO=""
+if [ "$(id -u)" -ne 0 ]; then SUDO="sudo"; fi
+
+PACKAGES=(
+  # Chromium/Electron shared libraries
+  nss nspr atk at-spi2-atk at-spi2-core cups-libs libdrm
+  gtk3 mesa-libgbm alsa-lib libxkbcommon
+  libXcomposite libXdamage libXfixes libXrandr libxshmfence
+  # X11 per-click capture (marker-accurate) — X11 sessions only
+  xorg-x11-server-utils xinput
+  # Wayland screen-share via the XDG portal + PipeWire
+  xdg-desktop-portal pipewire
+)
+
+echo "Installing StepForge runtime dependencies via dnf..."
+# Some package names differ across Fedora releases; install best-effort so one
+# missing optional name doesn't abort the whole set.
+$SUDO dnf install -y "${PACKAGES[@]}" || {
+  echo "Some packages were unavailable; retrying individually..." >&2
+  for pkg in "${PACKAGES[@]}"; do $SUDO dnf install -y "$pkg" || echo "  (skipped: $pkg)" >&2; done
+}
+echo "Done. StepForge runtime dependencies are installed."

scripts/linux/enable-click-capture.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+# OPTIONAL: enable per-click capture on Wayland (or X11 without xinput) using a
+# LEAST-PRIVILEGE udev rule instead of the broad `input` group.
+#
+# Security tradeoff (read before running):
+#   * This grants your ACTIVE local session read access to MOUSE devices only.
+#   * It deliberately EXCLUDES keyboards — StepForge never needs keystrokes.
+#   * Access is session-scoped (systemd `uaccess` ACL), not a permanent group.
+#   * It is NOT required: the safe default is a global hotkey or interval
+#     capture. Only enable this if you want a screenshot on every click.
+#
+# Compare to `sudo usermod -aG input "$USER"`, which grants access to ALL input
+# devices (including keyboards) for your user on every session — a much larger
+# surface. This script does not do that.
+set -euo pipefail
+
+RULE_SRC="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)/packaging/linux/common/60-stepforge-input.rules"
+RULE_DEST="/etc/udev/rules.d/60-stepforge-input.rules"
+
+if [ ! -f "$RULE_SRC" ]; then
+  echo "error: rule file not found at $RULE_SRC" >&2
+  exit 1
+fi
+
+echo "This installs a least-privilege udev rule granting your session read"
+echo "access to MOUSE devices only (never keyboards):"
+echo
+sed 's/^/    /' "$RULE_SRC"
+echo
+printf 'Install it to %s? [y/N] ' "$RULE_DEST"
+read -r reply
+case "$reply" in
+  y|Y|yes|YES) ;;
+  *) echo "Aborted. No changes made."; exit 0 ;;
+esac
+
+SUDO=""
+if [ "$(id -u)" -ne 0 ]; then SUDO="sudo"; fi
+
+$SUDO install -m 0644 "$RULE_SRC" "$RULE_DEST"
+$SUDO udevadm control --reload-rules
+$SUDO udevadm trigger --subsystem-match=input --action=change || true
+
+cat <<'MSG'
+
+Installed. You may need to unplug/replug a USB mouse or re-log in for the ACL
+to apply to already-connected devices.
+
+To remove it later:
+  sudo rm /etc/udev/rules.d/60-stepforge-input.rules
+  sudo udevadm control --reload-rules
+MSG

scripts/make-icons.js

@@ -0,0 +1,69 @@
+#!/usr/bin/env node
+'use strict';
+
+// Generate the StepForge PNG icon set from original geometry using the repo's
+// own rasterizer + PNG writer (no external image tooling or third-party art).
+// Mirrors packaging/assets/stepforge.svg. Output: packaging/assets/icons/.
+
+const fs = require('node:fs');
+const path = require('node:path');
+const { createImage, fillRect, fillOval } = require('../core/raster');
+const { encodePng } = require('../core/png');
+
+const OUT_DIR = path.join(__dirname, '..', 'packaging', 'assets', 'icons');
+const SIZES = [16, 32, 48, 64, 128, 256, 512];
+
+const BG_TOP = [37, 99, 235, 255];
+const BG_BOTTOM = [30, 58, 138, 255];
+const WHITE = [255, 255, 255, 255];
+const SPARK = [250, 204, 21, 255];
+
+function lerp(a, b, t) {
+  return [
+    Math.round(a[0] + (b[0] - a[0]) * t),
+    Math.round(a[1] + (b[1] - a[1]) * t),
+    Math.round(a[2] + (b[2] - a[2]) * t),
+    255,
+  ];
+}
+
+function renderIcon(size) {
+  const img = createImage(size, size, [0, 0, 0, 0]);
+  const s = size / 256; // scale from the 256px reference design
+
+  // Rounded-square background approximated by a vertical gradient fill.
+  for (let y = 0; y < size; y += 1) {
+    fillRect(img, 0, y, size, 1, lerp(BG_TOP, BG_BOTTOM, y / size));
+  }
+
+  // Three ascending steps (x, y, w, h in reference px).
+  const steps = [
+    [52, 150, 52, 54],
+    [102, 116, 52, 88],
+    [152, 82, 52, 122],
+  ];
+  for (const [x, y, w, h] of steps) {
+    fillRect(img, Math.round(x * s), Math.round(y * s), Math.round(w * s), Math.round(h * s), WHITE);
+  }
+
+  // Capture spark on the top step.
+  const r = Math.max(2, Math.round(16 * s));
+  fillOval(img, Math.round(178 * s - r), Math.round(60 * s - r), r * 2, r * 2, SPARK);
+
+  return img;
+}
+
+function main() {
+  fs.mkdirSync(OUT_DIR, { recursive: true });
+  for (const size of SIZES) {
+    const png = encodePng(renderIcon(size));
+    fs.writeFileSync(path.join(OUT_DIR, `stepforge-${size}.png`), png);
+  }
+  // A conventional default name for the desktop entry / hicolor 256px slot.
+  fs.copyFileSync(path.join(OUT_DIR, 'stepforge-256.png'), path.join(OUT_DIR, 'stepforge.png'));
+  console.log(`wrote ${SIZES.length + 1} icons to ${OUT_DIR}`);
+}
+
+if (require.main === module) main();
+
+module.exports = { renderIcon, SIZES };

scripts/package-linux.sh

@@ -1,92 +0,0 @@
-#!/usr/bin/env bash
-
-set -euo pipefail
-
-ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
-VERSION="$(node -p "const pkg=require('${ROOT_DIR}/package.json'); pkg.buildVersion || pkg.version" 2>/dev/null || echo 0.0.0)"
-OUT_DIR="${STEPFORGE_PACKAGE_DIR:-$ROOT_DIR/build/artifacts}"
-mkdir -p "$OUT_DIR"
-WORK_DIR="$(mktemp -d "${OUT_DIR%/}/.pkg.XXXXXX")"
-APP_DIR="$WORK_DIR/opt/stepforge"
-
-cleanup() {
-  rm -rf "$WORK_DIR"
-}
-trap cleanup EXIT
-
-mkdir -p "$APP_DIR" "$WORK_DIR/usr/bin" "$WORK_DIR/DEBIAN"
-
-copy_item() {
-  local src="$1"
-  local dest="$2"
-  if [[ -e "$ROOT_DIR/$src" ]]; then
-    mkdir -p "$(dirname "$dest")"
-    cp -a "$ROOT_DIR/$src" "$dest"
-  fi
-}
-
-# Application payload: only the files needed to run the app.
-copy_item app "$APP_DIR/app"
-copy_item core "$APP_DIR/core"
-copy_item exporters "$APP_DIR/exporters"
-copy_item scripts "$APP_DIR/scripts"
-copy_item README.md "$APP_DIR/README.md"
-copy_item LICENSE "$APP_DIR/LICENSE"
-copy_item docs "$APP_DIR/docs"
-copy_item ai_prompts "$APP_DIR/ai_prompts"
-copy_item package.json "$APP_DIR/package.json"
-copy_item package-lock.json "$APP_DIR/package-lock.json"
-copy_item examples "$APP_DIR/examples"
-copy_item build/agent_audit.md "$APP_DIR/build/agent_audit.md"
-
-if [[ -d "$ROOT_DIR/node_modules" ]]; then
-  cp -a "$ROOT_DIR/node_modules" "$APP_DIR/node_modules"
-fi
-
-cat > "$WORK_DIR/usr/bin/stepforge" <<'EOF'
-#!/usr/bin/env sh
-APP_DIR=/opt/stepforge
-ELECTRON="$APP_DIR/node_modules/.bin/electron"
-SANDBOX_HELPER="$APP_DIR/node_modules/electron/dist/chrome-sandbox"
-cd "$APP_DIR" || exit 1
-if command -v stat >/dev/null 2>&1 && [ -e "$SANDBOX_HELPER" ]; then
-  helper_uid="$(stat -c '%u' "$SANDBOX_HELPER" 2>/dev/null || echo '')"
-  helper_mode="$(stat -c '%a' "$SANDBOX_HELPER" 2>/dev/null || echo '')"
-  if [ "$helper_uid" = "0" ] && [ -n "$helper_mode" ]; then
-    helper_mode_num=$((8#$helper_mode))
-    if [ $((helper_mode_num & 04000)) -ne 0 ]; then
-      exec "$ELECTRON" "$APP_DIR" "$@"
-    fi
-  fi
-fi
-printf '%s\n' '[stepforge] Electron sandbox helper is not configured for this install; starting with --no-sandbox' >&2
-exec "$ELECTRON" --no-sandbox "$APP_DIR" "$@"
-EOF
-chmod 0755 "$WORK_DIR/usr/bin/stepforge"
-
-cat > "$WORK_DIR/DEBIAN/control" <<EOF
-Package: stepforge
-Version: $VERSION
-Section: utils
-Priority: optional
-Architecture: amd64
-Depends: xinput
-Maintainer: StepForge <[email protected]>
-Description: Offline desktop guide capture and export tool
- A fully offline desktop app for step-by-step documentation, built for local
- capture, annotation, and export workflows.
-EOF
-
-DEB_FILE="$OUT_DIR/stepforge_${VERSION}_amd64.deb"
-TAR_FILE="$OUT_DIR/stepforge_${VERSION}_linux-x64.tar.gz"
-
-if command -v dpkg-deb >/dev/null 2>&1; then
-  dpkg-deb --build "$WORK_DIR" "$DEB_FILE" >/dev/null
-else
-  echo "dpkg-deb is not installed; skipping .deb build" >&2
-fi
-
-tar -C "$WORK_DIR/opt" -czf "$TAR_FILE" stepforge
-
-printf '%s\n' "$DEB_FILE"
-printf '%s\n' "$TAR_FILE"

tests/integration/linux/package-deb.test.sh

@@ -0,0 +1,78 @@
+#!/usr/bin/env bash
+# Integration test: build the production .deb and assert it is a real,
+# runtime-only package — the right files present, and the dev tree / build
+# tooling / app docs absent. A package is NOT accepted merely because
+# dpkg-deb produced a file.
+#
+# Honest skip policy: skip ONLY when the prerequisites are genuinely absent
+# (not apt-based, dpkg-deb missing, or node_modules not installed). Once we
+# build, any structural failure fails the test.
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../.." && pwd)"
+cd "$ROOT_DIR"
+
+if ! command -v dpkg-deb >/dev/null 2>&1; then
+  echo "package-deb SKIPPED: dpkg-deb not installed (not an apt-based build host)"
+  exit 0
+fi
+if [ ! -d "$ROOT_DIR/node_modules/electron/dist" ]; then
+  echo "package-deb SKIPPED: node_modules/electron missing (run npm ci first)"
+  exit 0
+fi
+
+OUT_DIR="$(mktemp -d)"
+trap 'rm -rf "$OUT_DIR"' EXIT
+
+DEB="$(STEPFORGE_PACKAGE_DIR="$OUT_DIR" bash packaging/linux/debian/package.sh | head -1)"
+if [ ! -f "$DEB" ]; then
+  echo "package-deb FAILED: builder did not produce a .deb" >&2
+  exit 1
+fi
+
+fail() { echo "package-deb FAILED: $1" >&2; exit 1; }
+
+listing="$(dpkg-deb -c "$DEB")"
+control="$(dpkg-deb -f "$DEB")"
+
+# Required install items.
+for needle in \
+  './usr/bin/stepforge' \
+  './usr/share/applications/stepforge.desktop' \
+  './usr/share/mime/packages/stepforge.xml' \
+  './usr/share/icons/hicolor/256x256/apps/stepforge.png' \
+  './opt/stepforge/node_modules/electron/dist/electron' \
+  './opt/stepforge/app/main.js' \
+  './usr/share/doc/stepforge/copyright'; do
+  echo "$listing" | grep -qF "$needle" || fail "missing packaged file: $needle"
+done
+
+# The development node_modules / build tooling must NOT be present.
+for banned in \
+  'node_modules/electron-builder' \
+  'node_modules/app-builder-lib' \
+  'node_modules/dmg-builder'; do
+  echo "$listing" | grep -qF "$banned" && fail "build-only dependency leaked: $banned" || true
+done
+
+# The app's own docs/prompts/examples must not be shipped.
+for banned in \
+  './opt/stepforge/docs/' \
+  './opt/stepforge/ai_prompts/' \
+  './opt/stepforge/examples/'; do
+  echo "$listing" | grep -qF "$banned" && fail "app extra shipped: $banned" || true
+done
+
+# Control metadata sanity.
+echo "$control" | grep -q '^Package: stepforge' || fail "control missing Package"
+echo "$control" | grep -q '^Depends:.*libnss3' || fail "control missing runtime Depends"
+echo "$control" | grep -Eq '^Architecture: (amd64|arm64)' || fail "control has no concrete Architecture"
+
+# Sandbox is set up, not disabled: postinst makes chrome-sandbox setuid.
+dpkg-deb --info "$DEB" | grep -q 'postinst' || fail "no postinst maintainer script"
+
+# The launcher must refuse an unsandboxed launch by default.
+grep -q 'STEPFORGE_ALLOW_NO_SANDBOX' packaging/linux/common/launcher.sh \
+  || fail "launcher does not gate --no-sandbox behind an explicit opt-in"
+
+echo "package-deb OK ($(basename "$DEB"), $(du -h "$DEB" | cut -f1))"

tests/integration/linux/package-rpm.test.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+# Integration test: build the production .rpm and assert it is a real,
+# runtime-only package. Honest skip policy: skip ONLY when the prerequisites
+# are genuinely absent (rpmbuild missing or node_modules not installed). Once
+# we build, any structural failure fails the test.
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../.." && pwd)"
+cd "$ROOT_DIR"
+
+if ! command -v rpmbuild >/dev/null 2>&1; then
+  echo "package-rpm SKIPPED: rpmbuild not installed (not a dnf-based build host)"
+  exit 0
+fi
+if [ ! -d "$ROOT_DIR/node_modules/electron/dist" ]; then
+  echo "package-rpm SKIPPED: node_modules/electron missing (run npm ci first)"
+  exit 0
+fi
+
+OUT_DIR="$(mktemp -d)"
+trap 'rm -rf "$OUT_DIR"' EXIT
+
+RPM="$(STEPFORGE_PACKAGE_DIR="$OUT_DIR" bash packaging/linux/fedora/package.sh | tail -1)"
+[ -f "$RPM" ] || { echo "package-rpm FAILED: builder produced no .rpm" >&2; exit 1; }
+
+fail() { echo "package-rpm FAILED: $1" >&2; exit 1; }
+
+listing="$(rpm -qlp "$RPM" 2>/dev/null)"
+
+for needle in \
+  '/usr/bin/stepforge' \
+  '/usr/share/applications/stepforge.desktop' \
+  '/usr/share/mime/packages/stepforge.xml' \
+  '/opt/stepforge/node_modules/electron/dist/electron' \
+  '/opt/stepforge/app/main.js'; do
+  echo "$listing" | grep -qF "$needle" || fail "missing packaged file: $needle"
+done
+echo "$listing" | grep -q '/usr/share/icons/hicolor/256x256/apps/stepforge.png' || fail "missing 256px icon"
+
+# No dev tree / build tooling / app docs.
+for banned in 'electron-builder' '/opt/stepforge/docs/' '/opt/stepforge/ai_prompts/' '/opt/stepforge/examples/'; do
+  echo "$listing" | grep -qF "$banned" && fail "unexpected payload: $banned" || true
+done
+
+# Metadata sanity.
+rpm -qip "$RPM" 2>/dev/null | grep -q '^Name *: stepforge' || fail "rpm Name is not stepforge"
+rpm -qp --requires "$RPM" 2>/dev/null | grep -q '^nss' || fail "rpm does not Require nss"
+
+echo "package-rpm OK ($(basename "$RPM"))"

tests/unit/packaging-linux.test.js

@@ -0,0 +1,145 @@
+'use strict';
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const path = require('node:path');
+
+const ROOT = path.resolve(__dirname, '..', '..');
+// Strip CR so /^...$/m assertions are robust to CRLF checkouts on Windows CI.
+const read = (rel) => fs.readFileSync(path.join(ROOT, rel), 'utf8').replace(/\r\n/g, '\n');
+const exists = (rel) => fs.existsSync(path.join(ROOT, rel));
+
+// These are structural checks that run in the normal (cross-platform) unit
+// suite so the Linux packaging config can't rot silently; the actual .deb
+// build/inspection lives in tests/integration/linux/package-deb.test.sh.
+
+test('Linux packaging files exist in their expected separate locations', () => {
+  for (const f of [
+    'packaging/linux/debian/package.sh',
+    'packaging/linux/debian/control.in',
+    'packaging/linux/common/stepforge.desktop',
+    'packaging/linux/common/stepforge-mime.xml',
+    'packaging/linux/common/launcher.sh',
+    'scripts/linux/apt/install-runtime-deps.sh',
+    'scripts/linux/apt/install-build-deps.sh',
+    'docs/linux/apt.md',
+    'tests/integration/linux/package-deb.test.sh',
+  ]) {
+    assert.ok(exists(f), `expected ${f} to exist`);
+  }
+});
+
+test('the old non-production package-linux.sh is gone', () => {
+  assert.equal(exists('scripts/package-linux.sh'), false);
+});
+
+test('Fedora/dnf packaging files exist in their own separate locations', () => {
+  for (const f of [
+    'packaging/linux/fedora/package.sh',
+    'packaging/linux/fedora/stepforge.spec',
+    'packaging/linux/common/stage-runtime.sh',
+    'scripts/linux/dnf/install-runtime-deps.sh',
+    'scripts/linux/dnf/install-build-deps.sh',
+    'docs/linux/dnf.md',
+    'tests/integration/linux/package-rpm.test.sh',
+  ]) {
+    assert.ok(exists(f), `expected ${f} to exist`);
+  }
+});
+
+test('the RPM spec declares runtime Requires, license, and MPL-2.0', () => {
+  const spec = read('packaging/linux/fedora/stepforge.spec');
+  assert.match(spec, /^License:\s+MPL-2\.0$/m);
+  assert.match(spec, /^Requires:\s+nss$/m);
+  assert.match(spec, /%license/);
+  assert.match(spec, /chrome-sandbox/); // %post makes the sandbox helper setuid
+  assert.match(spec, /@VERSION@/);
+  assert.doesNotMatch(spec, /fully offline/i);
+});
+
+test('the rpm builder shares staging and requires rpmbuild + node_modules', () => {
+  const script = read('packaging/linux/fedora/package.sh');
+  assert.match(script, /stage-runtime\.sh/);
+  assert.match(script, /rpmbuild/);
+  assert.match(script, /rpm --eval '%\{_arch\}'|uname -m/); // arch detected
+  assert.doesNotMatch(script, /cp -a "\$ROOT_DIR\/node_modules" /);
+});
+
+test('dnf setup scripts target dnf and keep build vs runtime deps separate', () => {
+  const runtime = read('scripts/linux/dnf/install-runtime-deps.sh');
+  const build = read('scripts/linux/dnf/install-build-deps.sh');
+  assert.match(runtime, /dnf install/);
+  assert.match(runtime, /nss/);
+  assert.doesNotMatch(runtime, /rpm-build|rpmdevtools/, 'runtime script must not install build tools');
+  assert.match(build, /rpm-build/);
+});
+
+test('the shared staging never copies the whole dev node_modules', () => {
+  const staging = read('packaging/linux/common/stage-runtime.sh');
+  assert.match(staging, /npm ls --omit=dev/);
+  assert.match(staging, /electron-builder/); // leak guard
+  assert.doesNotMatch(staging, /cp -a "\$ROOT_DIR\/node_modules" "\$APP_DIR/);
+  assert.match(staging, /node_modules\/electron\/dist/); // requires the runtime
+});
+
+test('the desktop entry is valid and app-branded', () => {
+  const desktop = read('packaging/linux/common/stepforge.desktop');
+  assert.match(desktop, /^\[Desktop Entry\]/);
+  assert.match(desktop, /^Type=Application$/m);
+  assert.match(desktop, /^Exec=stepforge %U$/m);
+  assert.match(desktop, /^Icon=stepforge$/m);
+  assert.match(desktop, /^Categories=.+;$/m);
+  assert.match(desktop, /MimeType=application\/x-stepforge-guide/);
+});
+
+test('the control template declares runtime deps, no hardcoded arch, real maintainer slot', () => {
+  const control = read('packaging/linux/debian/control.in');
+  assert.match(control, /^Architecture: @ARCH@$/m, 'arch must be templated, not hardcoded');
+  assert.match(control, /^Depends:.*libnss3/m);
+  assert.match(control, /@VERSION@/);
+  assert.match(control, /@MAINTAINER@/);
+  // The false "fully offline" wording must not reappear here.
+  assert.doesNotMatch(control, /fully offline/i);
+});
+
+test('the launcher refuses an unsandboxed launch unless explicitly opted in', () => {
+  const launcher = read('packaging/linux/common/launcher.sh');
+  assert.match(launcher, /STEPFORGE_ALLOW_NO_SANDBOX/);
+  // It must not unconditionally exec with --no-sandbox.
+  assert.doesNotMatch(launcher, /^exec .*--no-sandbox/m);
+  // It never installs anything at runtime.
+  assert.doesNotMatch(launcher, /npm (install|ci|rebuild)/);
+});
+
+test('the deb builder detects arch and delegates to shared staging', () => {
+  const script = read('packaging/linux/debian/package.sh');
+  assert.match(script, /stage-runtime\.sh/); // runtime-only staging is shared
+  assert.match(script, /dpkg --print-architecture/); // arch detected, not hardcoded
+  assert.doesNotMatch(script, /cp -a "\$ROOT_DIR\/node_modules" /); // never copy the whole dev tree
+});
+
+test('apt setup scripts target apt and keep build vs runtime deps separate', () => {
+  const runtime = read('scripts/linux/apt/install-runtime-deps.sh');
+  const build = read('scripts/linux/apt/install-build-deps.sh');
+  assert.match(runtime, /apt-get/);
+  assert.match(runtime, /libnss3/);
+  assert.doesNotMatch(runtime, /dpkg-dev|fakeroot/, 'runtime script must not install build tools');
+  assert.match(build, /dpkg-dev/);
+  assert.match(build, /fakeroot/);
+});
+
+test('an original icon set is generated (not a placeholder/third-party asset)', () => {
+  assert.ok(exists('packaging/assets/stepforge.svg'));
+  assert.ok(exists('scripts/make-icons.js'));
+  // The generated PNGs are committed for packaging.
+  for (const size of [16, 48, 256]) {
+    assert.ok(exists(`packaging/assets/icons/stepforge-${size}.png`), `icon ${size} missing`);
+  }
+  // Regenerate the 256px icon and confirm the generator is deterministic and
+  // produces a valid PNG (starts with the PNG signature).
+  const { renderIcon } = require('../../scripts/make-icons');
+  const { encodePng } = require('../../core/png');
+  const png = encodePng(renderIcon(256));
+  assert.deepEqual([...png.subarray(0, 4)], [0x89, 0x50, 0x4e, 0x47]);
+});

tests/unit/platform.test.js

@@ -0,0 +1,139 @@
+'use strict';
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { detectPlatform, createWindowContextProvider, detectCapabilities } = require('../../app/platform');
+const { assertWindowContextProvider, CLICK_SOURCES } = require('../../app/platform/interfaces');
+const { detectLinuxCapabilities, detectSessionType } = require('../../app/platform/linux/diagnostics');
+
+// ---- platform selection -----------------------------------------------------
+
+test('detectPlatform maps process.platform to an adapter family', () => {
+  assert.equal(detectPlatform('win32'), 'windows');
+  assert.equal(detectPlatform('darwin'), 'darwin');
+  assert.equal(detectPlatform('linux'), 'linux');
+  assert.equal(detectPlatform('sunos'), 'unsupported');
+});
+
+test('the factory returns a valid WindowContextProvider for every OS', () => {
+  for (const platform of ['win32', 'darwin', 'linux', 'sunos']) {
+    const provider = createWindowContextProvider({ platform });
+    assert.doesNotThrow(() => assertWindowContextProvider(provider));
+    assert.equal(typeof provider.collect, 'function');
+  }
+});
+
+test('an unsupported platform provider returns an empty context, never throws', async () => {
+  const provider = createWindowContextProvider({ platform: 'sunos' });
+  assert.deepEqual(await provider.collect(), { appName: '', windowTitle: '' });
+});
+
+test('the shared code delegates window context to the injected provider', async () => {
+  // The text-intel service must consume the provider, not branch on platform.
+  const { TextIntelService } = require('../../app/text-intel');
+  const { makeTmpDir, rmrf } = require('./helpers');
+  const root = makeTmpDir('platform-ctx');
+  let sawPoint = null;
+  const service = new TextIntelService({
+    store: { settingsDir: root },
+    settings: { get: () => null },
+    dataDir: root,
+    windowContextProvider: {
+      async collect(osPoint) { sawPoint = osPoint; return { appName: 'TestApp', windowTitle: 'Test Window' }; },
+    },
+  });
+  const ctx = await service.collectForegroundWindowContext({ x: 5, y: 6 });
+  assert.deepEqual(ctx, { appName: 'TestApp', windowTitle: 'Test Window' });
+  assert.deepEqual(sawPoint, { x: 5, y: 6 });
+  rmrf(root);
+});
+
+// ---- Linux diagnostics ------------------------------------------------------
+
+test('session type prefers XDG_SESSION_TYPE then display env', () => {
+  assert.equal(detectSessionType({ XDG_SESSION_TYPE: 'wayland' }), 'wayland');
+  assert.equal(detectSessionType({ XDG_SESSION_TYPE: 'x11' }), 'x11');
+  assert.equal(detectSessionType({ WAYLAND_DISPLAY: 'wayland-0' }), 'wayland');
+  assert.equal(detectSessionType({ DISPLAY: ':0' }), 'x11');
+  assert.equal(detectSessionType({}), 'unknown');
+});
+
+test('X11 with xinput reports marker-capable per-click capture', () => {
+  const caps = detectLinuxCapabilities({
+    env: { XDG_SESSION_TYPE: 'x11', DISPLAY: ':0', DBUS_SESSION_BUS_ADDRESS: 'unix:x' },
+    hasBinary: (n) => n === 'xinput' || n === 'xprop',
+    existsSync: () => false,
+    readdirSync: () => [],
+  });
+  assert.equal(caps.isWayland, false);
+  assert.equal(caps.clickCapture, 'x11-xinput');
+  assert.equal(caps.screenCapture, 'x11-direct');
+});
+
+test('Wayland without PipeWire reports an actionable message', () => {
+  const caps = detectLinuxCapabilities({
+    env: { XDG_SESSION_TYPE: 'wayland', WAYLAND_DISPLAY: 'wayland-0' },
+    hasBinary: () => false,
+    existsSync: () => false,
+    readdirSync: () => [],
+  });
+  assert.equal(caps.isWayland, true);
+  assert.equal(caps.screenCapture, 'wayland-portal');
+  assert.ok(caps.messages.some((m) => /PipeWire|portal/i.test(m)));
+});
+
+test('no click source falls back to hotkey/interval with a message', () => {
+  const caps = detectLinuxCapabilities({
+    env: { XDG_SESSION_TYPE: 'x11', DISPLAY: ':0' },
+    hasBinary: () => false, // no xinput
+    existsSync: () => false,
+    readdirSync: () => [], // no readable input devices
+  });
+  assert.equal(caps.clickCapture, 'hotkey-or-interval-only');
+  assert.ok(caps.messages.some((m) => /hotkey|interval/i.test(m)));
+});
+
+test('readable evdev devices enable an evdev click source', () => {
+  const caps = detectLinuxCapabilities({
+    env: { XDG_SESSION_TYPE: 'wayland', WAYLAND_DISPLAY: 'wayland-0' },
+    hasBinary: (n) => n === 'pipewire',
+    existsSync: () => true,
+    readdirSync: () => ['event0', 'event1', 'mouse0'],
+  });
+  // event0/event1 are readable (accessSync is real, but /dev/input/eventN
+  // likely won't exist in CI; the profile still resolves without throwing).
+  assert.ok(['evdev-wayland', 'hotkey-or-interval-only'].includes(caps.clickCapture));
+  assert.equal(caps.os, 'linux');
+});
+
+// ---- capability facade ------------------------------------------------------
+
+test('detectCapabilities returns a Linux profile with valid click source', () => {
+  const caps = detectCapabilities({ platform: 'linux', env: { XDG_SESSION_TYPE: 'x11', DISPLAY: ':0' } });
+  assert.equal(caps.os, 'linux');
+});
+
+test('detectCapabilities reports windows-hook for Windows', () => {
+  const caps = detectCapabilities({ platform: 'win32', env: {} });
+  assert.equal(caps.os, 'windows');
+  assert.equal(caps.clickCapture, 'windows-hook');
+});
+
+test('every documented click source is a known token', () => {
+  for (const s of ['windows-hook', 'x11', 'evdev-x11', 'evdev-wayland', 'wayland-portal', 'hotkey', 'interval', 'unavailable']) {
+    assert.ok(CLICK_SOURCES.includes(s));
+  }
+});
+
+// ---- refactor guard ---------------------------------------------------------
+
+const fs = require('node:fs');
+const path = require('node:path');
+
+test('text-intel no longer branches on process.platform for window context', () => {
+  const src = fs.readFileSync(path.join(__dirname, '..', '..', 'app', 'text-intel.js'), 'utf8');
+  assert.doesNotMatch(src, /collectWindowsWindowContext|collectMacWindowContext|collectLinuxWindowContext/);
+  assert.doesNotMatch(src, /process\.platform === 'win32'/);
+  assert.match(src, /this\.windowContext\.collect/);
+});

tests/unit/shortcut-utils.test.js

@@ -0,0 +1,26 @@
+'use strict';
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const {
+  zoomShortcutFromInputEvent,
+  zoomShortcutFromKeyboardEvent,
+} = require('../../app/shortcut-utils');
+
+test('zoom shortcut helper recognizes zoom in, out, and fit across event shapes', () => {
+  assert.equal(zoomShortcutFromKeyboardEvent({ ctrlKey: true, key: '=', code: 'Equal' }), 'in');
+  assert.equal(zoomShortcutFromKeyboardEvent({ ctrlKey: true, key: '+', code: 'NumpadAdd' }), 'in');
+  assert.equal(zoomShortcutFromKeyboardEvent({ ctrlKey: true, key: 'Plus', code: 'Equal' }), 'in');
+  assert.equal(zoomShortcutFromKeyboardEvent({ ctrlKey: true, key: '-', code: 'Minus' }), 'out');
+  assert.equal(zoomShortcutFromKeyboardEvent({ metaKey: true, key: '0', code: 'Digit0' }), 'fit');
+  assert.equal(zoomShortcutFromKeyboardEvent({ ctrlKey: true, key: '=', code: 'Equal', shiftKey: true }), 'in');
+});
+
+test('zoom shortcut helper recognizes Electron before-input-event payloads', () => {
+  assert.equal(zoomShortcutFromInputEvent({ control: true, key: '=', code: 'Equal' }), 'in');
+  assert.equal(zoomShortcutFromInputEvent({ control: true, key: '=', code: 'Equal', shift: true }), 'in');
+  assert.equal(zoomShortcutFromInputEvent({ control: true, key: 'Plus', code: 'Equal', shift: true }), 'in');
+  assert.equal(zoomShortcutFromInputEvent({ control: true, key: '-', code: 'Minus' }), 'out');
+  assert.equal(zoomShortcutFromInputEvent({ meta: true, key: '0', code: 'Digit0' }), 'fit');
+});

tests/unit/wayland-honesty.test.js

@@ -0,0 +1,90 @@
+'use strict';
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const path = require('node:path');
+
+const { chooseCaptureTrigger, detectLinuxCapabilities } = require('../../app/platform/linux/diagnostics');
+const platform = require('../../app/platform');
+
+const ROOT = path.resolve(__dirname, '..', '..');
+// Strip CR so assertions are robust to CRLF checkouts on Windows CI.
+const read = (rel) => fs.readFileSync(path.join(ROOT, rel), 'utf8').replace(/\r\n/g, '\n');
+const exists = (rel) => fs.existsSync(path.join(ROOT, rel));
+
+// ---- honest trigger decisions ----------------------------------------------
+
+test('X11 + xinput promises per-click capture with a marker', () => {
+  const t = chooseCaptureTrigger({ os: 'linux', isWayland: false, clickCapture: 'x11-xinput' });
+  assert.equal(t.trigger, 'click');
+  assert.equal(t.coordinates, true);
+  assert.equal(t.marker, true);
+});
+
+test('Wayland evdev captures per click but never promises coordinates or a marker', () => {
+  const t = chooseCaptureTrigger({ os: 'linux', isWayland: true, clickCapture: 'evdev-wayland' });
+  assert.equal(t.trigger, 'click');
+  assert.equal(t.coordinates, false, 'Wayland exposes no pointer position');
+  assert.equal(t.marker, false);
+});
+
+test('Wayland without a click source falls back to the user trigger, honestly', () => {
+  const interval = chooseCaptureTrigger({ os: 'linux', isWayland: true, clickCapture: 'hotkey-or-interval-only' }, 'interval');
+  assert.equal(interval.trigger, 'interval');
+  assert.equal(interval.coordinates, false);
+  assert.match(interval.note, /Wayland does not expose global clicks/i);
+
+  const hotkey = chooseCaptureTrigger({ os: 'linux', isWayland: true, clickCapture: 'hotkey-or-interval-only' }, 'hotkey');
+  assert.equal(hotkey.trigger, 'hotkey');
+});
+
+test('the platform facade wires the Linux trigger decision from real capabilities', () => {
+  const caps = detectLinuxCapabilities({
+    env: { XDG_SESSION_TYPE: 'wayland', WAYLAND_DISPLAY: 'wayland-0' },
+    hasBinary: () => false,
+    existsSync: () => false,
+    readdirSync: () => [],
+  });
+  const t = platform.chooseCaptureTrigger(caps, 'interval');
+  assert.equal(t.trigger, 'interval');
+  assert.equal(t.marker, false);
+});
+
+test('Windows always reports per-click capture', () => {
+  const t = platform.chooseCaptureTrigger({ os: 'windows' });
+  assert.equal(t.trigger, 'click');
+  assert.equal(t.coordinates, true);
+});
+
+// ---- least-privilege input access -------------------------------------------
+
+test('the udev rule grants mouse-only access and excludes keyboards', () => {
+  assert.ok(exists('packaging/linux/common/60-stepforge-input.rules'));
+  const rule = read('packaging/linux/common/60-stepforge-input.rules');
+  assert.match(rule, /ID_INPUT_MOUSE\}=="1"/);
+  assert.match(rule, /ID_INPUT_KEYBOARD\}!="1"/, 'must exclude keyboards');
+  assert.match(rule, /TAG\+="uaccess"/, 'session-scoped ACL, not a permanent group');
+});
+
+test('the enable script is opt-in and installs the least-privilege rule, not the input group', () => {
+  assert.ok(exists('scripts/linux/enable-click-capture.sh'));
+  const script = read('scripts/linux/enable-click-capture.sh');
+  assert.match(script, /read -r reply/, 'must confirm before installing');
+  assert.match(script, /60-stepforge-input\.rules/, 'installs the least-privilege udev rule');
+  // usermod may only appear in a comment (warning), never as an executed
+  // command. Check command position (line start, optional sudo) so this is
+  // robust to CRLF vs LF line endings across platforms.
+  assert.doesNotMatch(script, /^\s*(sudo\s+)?usermod\b/m, 'must not run the broad input-group command');
+});
+
+// ---- docs no longer push the broad input group ------------------------------
+
+test('Linux docs recommend the least-privilege path and warn against the input group', () => {
+  const doc = read('docs/GETTING_STARTED_WITH_LINUX.md');
+  assert.match(doc, /enable-click-capture\.sh/);
+  assert.match(doc, /least-privilege/i);
+  // The broad group is now presented as a warning ("Do not use ..."), not a
+  // recommended step.
+  assert.match(doc, /Do \*\*not\*\* use `sudo usermod/);
+});