Merge remote-tracking branch 'origin/main' into fix/windows-ssh-config-acl

Remote desktop from Windows: sign in as steamos, and say why when the Frame doesn't answer

app/main.js

@@ -1,7 +1,7 @@
 // Frame Control as a desktop app (macOS, Windows, Linux): starts ui/server.py on
 // a free loopback port and shows it in a native window. The server does all the
 // work over the `frame` SSH alias; this file only hosts it.
-const { app, BrowserWindow, Menu, Notification, clipboard, dialog, ipcMain, shell } = require("electron");
+const { app, BrowserWindow, Menu, Notification, clipboard, dialog, ipcMain, nativeImage, shell } = require("electron");
 const { execFile, spawn } = require("child_process");
 const { promisify } = require("util");
 const fs = require("fs");
@@ -149,7 +149,7 @@ async function startServer() {
   const target = `http://127.0.0.1:${port}/`;
   for (let i = 0; i < 100; i++) {
     if (exited !== null) throw new Error(`The server exited (${exited}). See ${LOG}.`);
-    if (await ping(target)) { url = target; return; }
+    if (await ping(target)) { url = target; serverStarted = Date.now(); return; }
     await new Promise((r) => setTimeout(r, 100));
   }
   if (server === child) server = null;
@@ -175,18 +175,27 @@ function stopServer() {
   if (server) endServer(server);
 }
 
-function errorPage(message) {
+function errorPage(message, title = "Frame Control couldn't start") {
   const esc = (s) => s.replace(/[&<>]/g, (c) => ({ "&": "&amp;", "<": "&lt;", ">": "&gt;" }[c]));
   const html = `<!doctype html><meta charset="utf-8"><body style="margin:0;height:100vh;display:grid;
     place-items:center;background:${BG};color:#e6edf3;font:14px -apple-system,sans-serif">
-    <div style="max-width:560px;padding:32px;line-height:1.5"><h2>Frame Control couldn't start</h2>
-    <p>${esc(message)}</p><p style="color:#8b98a8">Fix it, then choose Frame → Restart Server.</p></div>`;
+    <div style="max-width:560px;padding:32px;line-height:1.5"><h2>${esc(title)}</h2>
+    <p>${esc(message)}</p>
+    <p><button onclick="this.disabled = true; frameApp.restartServer()" style="font:inherit;padding:6px 16px;
+      border-radius:6px;border:1px solid #30363d;background:#21262d;color:inherit;cursor:pointer">Try Again</button></p>
+    <p style="color:#8b98a8">Frame → Restart Server does the same.</p></div>`;
   return "data:text/html;charset=utf-8," + encodeURIComponent(html);
 }
 
+// A server that had been running starts again by itself (something stopped it: a
+// signal, a crash). One that stops again within a minute shows the error instead,
+// so a server that can't stay up doesn't restart forever.
+let serverStarted = 0;
 function serverDied(why) {
   url = null;
-  if (win) win.loadURL(errorPage(`The server stopped unexpectedly (${why}). See ${LOG}.`));
+  if (!win) return;
+  if (Date.now() - serverStarted > 60000) restartServer();
+  else win.loadURL(errorPage(`Its server stopped unexpectedly (${why}). See ${LOG}.`, "Frame Control stopped"));
 }
 
 // Restarts that overlap share one: two could each start a server, and the one
@@ -263,7 +272,20 @@ function fromUi(e) {
   } catch { return false; }
 }
 
+// The error page's Try Again button. The error page is the only data: page the window
+// shows (`url` can still be set then: the server answered but the page failed to load).
+ipcMain.handle("server:restart", (e) => {
+  if (win && e.sender === win.webContents && e.senderFrame && e.senderFrame.url.startsWith("data:")) restartServer();
+});
 ipcMain.handle("clipboard:read", (e) => fromUi(e) ? clipboard.readText() : "");
+// A PNG or JPEG (a screenshot) onto the clipboard as an image.
+ipcMain.handle("clipboard:writeImage", (e, bytes) => {
+  if (!fromUi(e) || !(bytes instanceof Uint8Array)) return false;
+  const img = nativeImage.createFromBuffer(Buffer.from(bytes));
+  if (img.isEmpty()) throw new Error("not an image");
+  clipboard.writeImage(img);
+  return true;
+});
 ipcMain.handle("connection:setup", (e) => { if (fromUi(e)) setUpConnection(); });
 ipcMain.on("keys:capture", (e, on) => { if (fromUi(e)) win.webContents.setIgnoreMenuShortcuts(on === true); });
 ipcMain.handle("update:get", (e) => fromUi(e) ? publicUpdate() : null);

app/preload.js

@@ -2,8 +2,8 @@
 // to the Frame needs no pbpaste, PowerShell, xclip or wl-clipboard. Also tells
 // the page where a dropped file or folder lives, so a folder can be sideloaded
 // as a title without zipping it (the local server reads it from there).
-// It can open Set Up Connection when the headset can't be reached, and keeps the
-// Frame menu's list of headsets up to date.
+// It can put a screenshot on the clipboard as an image, open Set Up Connection when
+// the headset can't be reached, and keeps the Frame menu's list of headsets up to date.
 // It also receives frame-control://install links (docs/web-install.md): only
 // what the link asked for, never an install; the page asks the user first.
 // And it passes update state both ways: see app/updater.js.
@@ -12,7 +12,9 @@ const { contextBridge, ipcRenderer, webUtils } = require("electron");
 contextBridge.exposeInMainWorld("frameApp", {
   notify: (message, request) => ipcRenderer.invoke("comfort:notify", message, request),
   readClipboard: () => ipcRenderer.invoke("clipboard:read"),
+  writeImage: (bytes) => ipcRenderer.invoke("clipboard:writeImage", bytes),
   setUpConnection: () => ipcRenderer.invoke("connection:setup"),
+  restartServer: () => ipcRenderer.invoke("server:restart"),  // the "couldn't start" page's Try Again
   // The Frame menu's headset switcher: the page tells it the headsets, and hears picks.
   devicesChanged: (list) => ipcRenderer.send("devices:changed", list),
   onUseDevice: (cb) => {

docs/frame-control.md

@@ -88,8 +88,13 @@ counts them while they run.
   name your networks, and switch headsets. See [devices.md](devices.md).
 - **One-click tools**: SSH or SFTP in a terminal window, Steam Link, and remote
   desktop (Windows App on macOS, Remote Desktop on Windows, Remmina or FreeRDP on
-  Linux). Sleep, restart and shut down open a terminal window because SteamOS
-  asks for the sudo password over SSH.
+  Linux). Remote desktop first checks that the Frame's xrdp answers on port
+  3389 (Developer Mode turns it on). On Windows it opens a connection file for
+  user `steamos`, because `mstsc /v:` alone offers your Windows account, which
+  xrdp turns away. Accept the warning about the Frame's own certificate, then
+  sign in with the Developer Mode password. Sleep, restart and
+  shut down open a terminal window because SteamOS asks for the sudo password
+  over SSH.
 
 ## How it works
 

docs/privacy.md

@@ -103,8 +103,10 @@ privately to Frame Control's PostHog project as a `problem_report` event, the
 same way as the analytics above, so only the maintainer can read it and
 nothing is published. It works whatever the analytics settings are, because
 the person sends it deliberately. The report has the kind, title and text you
-wrote, how to reach you if you gave it, a short reference shown after sending,
-and the diagnostics below. It has its own random id, so it isn't linked to
+wrote, a short reference shown after sending, and the diagnostics below. Your
+email address goes with it only if you tick **The maintainer may contact me
+with follow-up questions** (the report then carries `contact_followup: true`);
+it's filled in from **Contact email** below when you've agreed there. It has its own random id, so it isn't linked to
 your analytics events.
 
 With **Include diagnostics** ticked (the default), the report adds:
@@ -128,11 +130,60 @@ The maintainer reads reports on the Frame Control dashboard in PostHog, or
 with `python3 ui/frame_report.py inbox [days]`, which uses the same personal
 API key as `frame_compat_db.py sync`.
 
+## Contact email (optional)
+
+Frame Control never needs an email address. If you'd like to leave one, there
+are two separate choices, both off until you tick them:
+
+| Choice | What it's for |
+|---|---|
+| **Email me about Frame Control updates** | Occasional notices about new releases and updates |
+| **The maintainer may contact me with follow-up questions** | Questions about problem reports you send, mostly |
+
+You're asked once, in a bar at the top of the page, after the Frame has
+connected for the first time, and never while or straight after the
+first-run privacy notice is showing. **No thanks** hides it for good, and it isn't
+shown again even if you ignore it. **Contact email** in **Privacy & updates**
+is where you add, change or remove the address and either choice at any time.
+
+**What's sent, and where.** The address and the two choices go privately to
+Frame Control's PostHog project, the same place as problem reports, as a
+`contact_consent` event with `email`, `updates`, `followup`, `action` (`set`
+or `withdraw`) and the common properties above. Only the maintainer can read
+that project, and nothing in it is published or shared. It's sent only when
+you save, whatever the analytics settings are, because you chose to. It
+carries its own random contact id, not the analytics id, so it isn't linked
+to your usage events, and a `rev` number that goes up with each change, so
+the newest choice always wins. Like everything else sent, it's listed under
+**Show what's been sent**. On this computer the address and choices are kept in
+`contact/contact.json` in Frame Control's data folder. An address is only
+kept with at least one choice ticked.
+
+**Removing it.** **Remove my email** (or clearing the address and saving)
+deletes it from this computer, including from the **Show what's been sent**
+log (in earlier contact events and problem reports), and sends a `withdraw`
+event with no address in it. The maintainer's list only uses the newest event from each copy, so from
+then on the address isn't listed for either choice. Unticking one choice
+works the same way for that choice. If you're offline, the change waits on
+this computer and is sent when PostHog can be reached. The earlier event
+stays in PostHog until its data retention removes it; to have it deleted
+sooner, ask the maintainer (for example in a problem report).
+
+Nothing sends email yet: this only records who agreed to what. The
+maintainer lists the addresses with
+`python3 ui/frame_report.py contacts [updates|followup]`, which uses the same
+personal API key as `inbox`.
+
 ## Turning it all off
 
 Untick the boxes, or set `DO_NOT_TRACK=1` or `FRAME_CONTROL_TELEMETRY=0` in
 the environment that starts Frame Control. A copy run from a source checkout
-never sends anything unless `FRAME_CONTROL_TELEMETRY=1` is set.
+never sends analytics unless `FRAME_CONTROL_TELEMETRY=1` is set.
+
+These switches cover the analytics above. A problem report or a contact email
+is sent only because you pressed its Send or Save button, so those still go
+when you choose to send them (a contact change saved while offline is sent
+by itself once PostHog can be reached); if you don't, nothing is sent.
 
 ## Update checks
 

docs/streaming.md

@@ -25,6 +25,20 @@ The confidence labels are the same as in [ssh.md](ssh.md).
 documents it. Use Windows App (RDP) when you want a proper Linux desktop on the
 Mac with keyboard, mouse, and clipboard.
 
+**Verified 2026-09-30** (Frame BUILD_ID 20260925.6191901, Windows 11 25H2,
+Remote Desktop Connection): signing in to xrdp as `steamos` with the Developer
+Mode password opens a Plasma (X11) desktop within about 6 seconds.
+
+- xrdp has no NLA, so the client shows a certificate warning (xrdp's own
+  `www.xrdp.org` certificate) and then xrdp's own login box. Frame Control
+  fills in `steamos` there on Windows, Remmina and FreeRDP.
+- The desktop is a separate login session (Xorg on display `:10`), not the
+  headset's view. It uses about 1.3 GB of the Frame's memory.
+- Closing the client leaves the session running, and the next login
+  reconnects to it. To end it over SSH, find it with `loginctl list-sessions`
+  and run `loginctl terminate-session <id>`. That doesn't touch the headset's
+  gamescope or SteamVR session.
+
 ## B. Show the Mac's desktop inside the Frame
 
 The Frame's VR streaming uses **SteamVR** on the host. Linux hosts had

tests/test_contact.py

@@ -0,0 +1,280 @@
+"""A contact email (ui/frame_contact.py): kept only with a matching choice, sent privately,
+withdrawn when removed, never lost offline, and the one-time prompt stays dismissed.
+
+Run: python3 -m unittest discover -s tests
+"""
+import sandbox  # noqa: F401  (first: keeps tests off real data and services)
+import sys
+import threading
+import time
+import unittest
+from pathlib import Path
+from unittest import mock
+
+ROOT = Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(ROOT / "ui"))
+sys.path.insert(0, str(Path(__file__).resolve().parent))
+
+import frame_compat_db as db  # noqa: E402
+import frame_contact as fc  # noqa: E402
+import frame_report as fr  # noqa: E402
+import frame_telemetry as tm  # noqa: E402
+from test_telemetry import Base, ReportProblem  # noqa: E402
+
+REPORT = {"title": "RDP not working", "message": "It never connects on Windows."}
+
+
+class Contact(Base):
+    """Base's temp telemetry state, ReportProblem's PostHog stand-in, and a temp contact file."""
+    serve = ReportProblem.serve
+
+    def setUp(self):
+        super().setUp()
+        self.addCleanup(fc._removed.clear)
+        for name, value in (("STATE", tm.STATE / "contact"), ("FILE", tm.STATE / "contact" / "contact.json")):
+            p = mock.patch.object(fc, name, value)
+            p.start()
+            self.addCleanup(p.stop)
+        self.got = self.serve()
+
+    def events(self):
+        return [body["batch"][0] for _, body in self.got]
+
+    def offline(self):
+        return mock.patch.object(tm, "post", side_effect=tm.SendError("couldn't reach PostHog"))
+
+    # ---- storage and consent flags
+
+    def test_nothing_is_kept_or_sent_until_chosen(self):
+        s = fc.state()
+        self.assertEqual((s["email"], s["updates"], s["followup"], s["waiting"]), ("", False, False, False))
+        self.assertFalse(fc.FILE.exists())
+        self.assertEqual(self.got, [])
+
+    def test_an_address_needs_a_choice_and_a_real_address(self):
+        with self.assertRaisesRegex(ValueError, "tick"):
+            fc.save({"email": "me@example.com"})
+        with self.assertRaisesRegex(ValueError, "email address"):
+            fc.save({"email": "not an address", "updates": True})
+        self.assertEqual(fc.load()["email"], "")
+        self.assertEqual(self.got, [])
+
+    def test_each_choice_is_sent_privately_on_its_own(self):
+        fc.save({"email": " me@example.com ", "updates": True})
+        fc.save({"email": "me@example.com", "updates": False, "followup": True})
+        first, second = self.events()
+        self.assertEqual(first["event"], "contact_consent")
+        self.assertEqual({k: first["properties"][k] for k in ("email", "updates", "followup", "action")},
+                         {"email": "me@example.com", "updates": True, "followup": False, "action": "set"})
+        self.assertEqual((second["properties"]["updates"], second["properties"]["followup"]), (False, True))
+        self.assertEqual(first["distinct_id"], second["distinct_id"])  # one contact id, newest wins
+        self.assertNotEqual(first["distinct_id"], tm.settings()["id"])  # not the analytics id
+        self.assertEqual((first["properties"]["$process_person_profile"], first["properties"]["$geoip_disable"]),
+                         (False, True))
+        self.assertEqual([e["event"] for e in tm._read_lines(tm.SENT)], ["contact_consent"] * 2)
+
+    def test_sent_whatever_the_analytics_settings(self):
+        tm.update_settings({"usage": False})
+        fc.save({"email": "me@example.com", "followup": True})
+        self.assertEqual(len(self.got), 1)
+
+    def test_saving_the_same_choice_again_sends_nothing(self):
+        fc.save({"email": "me@example.com", "updates": True})
+        fc.save({"email": "me@example.com", "updates": True})
+        self.assertEqual(len(self.got), 1)
+
+    # ---- withdrawal
+
+    def test_removing_the_address_sends_a_withdrawal_without_it(self):
+        fc.save({"email": "me@example.com", "updates": True, "followup": True})
+        s = fc.save({"email": "", "updates": True, "followup": True})
+        self.assertEqual((s["email"], s["updates"], s["followup"]), ("", False, False))
+        withdrawal = self.events()[-1]["properties"]
+        self.assertEqual((withdrawal["action"], withdrawal["email"], withdrawal["updates"], withdrawal["followup"]),
+                         ("withdraw", "", False, False))
+        self.assertNotIn("me@example.com", fc.FILE.read_text())
+
+    def test_an_address_still_waiting_is_withdrawn_too(self):
+        with self.offline():
+            fc.save({"email": "me@example.com", "updates": True})  # may already be on its way
+        with mock.patch.object(tm, "post") as post:
+            fc.save({"email": ""})
+        self.assertEqual([c.args[0][0]["properties"]["action"] for c in post.call_args_list], ["withdraw"])
+        self.assertFalse(fc.state()["waiting"])
+
+    def test_offline_the_newest_choice_waits_and_a_withdrawal_is_never_lost(self):
+        fc.save({"email": "me@example.com", "updates": True})
+        with self.offline():
+            s = fc.save({"email": ""})
+            self.assertTrue(s["waiting"])
+            self.assertFalse(fc._send_pending())
+        self.assertEqual(fc.load()["pending"]["properties"]["action"], "withdraw")
+        self.assertTrue(fc._send_pending())
+        self.assertFalse(fc.state()["waiting"])
+        self.assertEqual([e["properties"]["action"] for e in self.events()], ["set", "withdraw"])
+
+    def test_removing_the_address_wipes_it_from_the_sent_log_too(self):
+        fc.save({"email": "me@example.com", "followup": True})
+        fr.send({**REPORT, "contact": "me@example.com", "contactFollowup": True})
+        self.assertIn("me@example.com", tm.SENT.read_text())
+        fc.save({"email": ""})
+        self.assertNotIn("me@example.com", tm.SENT.read_text())
+        self.assertEqual([e["properties"].get("action") for e in tm._read_lines(tm.SENT)
+                          if e["event"] == "contact_consent"], ["set", "withdraw"])
+
+    def test_each_change_has_a_higher_rev_so_the_newest_wins_whatever_the_clock(self):
+        fc.save({"email": "me@example.com", "updates": True})
+        fc.save({"email": "new@example.com", "updates": True})
+        fc.save({"email": ""})
+        self.assertEqual([e["properties"]["rev"] for e in self.events()], [1, 2, 3])
+
+    def test_a_withdrawal_during_a_send_goes_after_it(self):
+        started, release, order = threading.Event(), threading.Event(), []
+        real = tm.post
+
+        def slow(batch, timeout=20):
+            order.append(batch[0]["properties"]["action"])
+            if len(order) == 1:
+                started.set()
+                release.wait(5)
+            real(batch, timeout)
+
+        with mock.patch.object(tm, "post", side_effect=slow):
+            t = threading.Thread(target=fc.save, args=({"email": "me@example.com", "updates": True},))
+            t.start()
+            self.assertTrue(started.wait(5))
+            w = threading.Thread(target=fc.save, args=({"email": ""},))
+            w.start()
+            for _ in range(500):  # the withdrawal is saved while the first send is still out
+                if fc.load()["rev"] == 2:
+                    break
+                time.sleep(0.01)
+            self.assertEqual(fc.load()["pending"]["properties"]["action"], "withdraw")
+            release.set()
+            t.join(5)
+            w.join(5)
+        self.assertEqual(order, ["set", "withdraw"])
+        self.assertEqual([e["properties"]["action"] for e in self.events()], ["set", "withdraw"])
+        self.assertFalse(fc.state()["waiting"])
+        self.assertNotIn("me@example.com", tm.SENT.read_text())
+
+    def test_a_report_still_sending_when_its_address_is_removed_is_logged_without_it(self):
+        fc.save({"email": "me@example.com", "followup": True})
+        real = tm.post
+
+        def remove_meanwhile(batch, timeout=20):
+            real(batch, timeout)
+            fc.save({"email": ""})  # removed while the report is on its way, before it's logged
+
+        with mock.patch.object(tm, "post", side_effect=remove_meanwhile):
+            fr.send({**REPORT, "contact": "me@example.com", "contactFollowup": True})
+        self.assertNotIn("me@example.com", tm.SENT.read_text())
+        fr.send({**REPORT, "contact": "me@example.com", "contactFollowup": True})
+        self.assertIn("me@example.com", tm.SENT.read_text())  # sent again after removal: logged as sent
+
+    def test_only_reports_started_before_the_removal_are_redacted_even_within_a_second(self):
+        fc._removed["me@example.com"] = 1790000000.3
+        event = lambda: {"timestamp": "2026-09-21T12:53:20Z", "properties": {"contact": "me@example.com"}}
+        before, after = event(), event()  # the same whole second as the removal
+        fc.redact_removed(before, 1790000000.1)
+        fc.redact_removed(after, 1790000000.6)
+        self.assertEqual((before["properties"]["contact"], after["properties"]["contact"]),
+                         ("<removed>", "me@example.com"))
+
+    def test_saving_during_a_slow_send_returns_at_once(self):
+        busy = fc._send_lock
+        busy.acquire()
+        try:
+            s = fc.save({"email": "me@example.com", "updates": True})
+        finally:
+            busy.release()
+        self.assertTrue(s["waiting"])  # left for the send under way (or the retry) to take
+        self.assertEqual(self.got, [])
+        self.assertTrue(fc._send_pending())
+        self.assertEqual(len(self.got), 1)
+
+    def test_a_change_saved_as_a_send_finishes_is_not_left_behind(self):
+        real = fc._send_lock
+
+        class Lock:  # a Save lands after the sender found nothing waiting, before it lets go
+            saved = False
+
+            def acquire(self, blocking=True):
+                return real.acquire(blocking)
+
+            def release(self):
+                if not Lock.saved:
+                    Lock.saved = True
+                    s = threading.Thread(target=fc.save, args=({"email": "me@example.com", "updates": True},))
+                    s.start()
+                    s.join(5)
+                    assert not s.is_alive()  # the change is saved while the sender still holds the lock
+                real.release()
+
+        with mock.patch.object(fc, "_send_lock", Lock()):
+            self.assertTrue(fc._send_pending())
+        self.assertEqual([e["properties"]["email"] for e in self.events()], ["me@example.com"])
+        self.assertFalse(fc.state()["waiting"])
+
+    # ---- the one-time prompt
+
+    def test_the_prompt_waits_for_a_working_setup_then_stays_dismissed(self):
+        self.assertFalse(fc.state()["showPrompt"])  # a new install: the Frame hasn't connected yet
+        tm.frame_seen("20260901.1", "3.8")
+        self.assertTrue(fc.state()["showPrompt"])
+        fc.prompt({"prompt": "dismissed"})
+        fc.prompt({"prompt": "shown"})  # a later session can't bring it back
+        self.assertEqual(fc.load()["prompt"], "dismissed")
+        self.assertFalse(fc.state()["showPrompt"])
+        self.assertEqual(self.got, [])  # No thanks sends nothing
+        with self.assertRaises(ValueError):
+            fc.prompt({"prompt": "reset"})
+
+    def test_the_prompt_is_shown_once_and_saving_answers_it(self):
+        tm.frame_seen("20260901.1", "3.8")
+        fc.prompt({"prompt": "shown"})
+        self.assertFalse(fc.state()["showPrompt"])
+        fc.save({"email": "me@example.com", "followup": True, "fromPrompt": True})
+        self.assertEqual(fc.load()["prompt"], "answered")
+
+    # ---- reports and the maintainer's list
+
+    def test_a_report_carries_the_address_only_with_follow_up_consent(self):
+        fr.send({**REPORT, "contact": "me@example.com"})
+        fr.send({**REPORT, "contact": "me@example.com", "contactFollowup": True})
+        without, with_ = (e["properties"] for e in self.events())
+        self.assertEqual((without["contact"], without["contact_followup"]), ("", False))
+        self.assertEqual((with_["contact"], with_["contact_followup"]), ("me@example.com", True))
+        with self.assertRaisesRegex(ValueError, "email address"):
+            fr.send({**REPORT, "contact": "discord:me", "contactFollowup": True})
+
+    def test_contacts_lists_the_newest_choice_per_copy_by_consent(self):
+        rows = [["a", "both@example.com", True, "true", "2026-09-01T10:00:00Z"],
+                ["b", "news@example.com", "true", False, "2026-09-02T10:00:00Z"],
+                ["c", "", False, False, "2026-09-03T10:00:00Z"],  # withdrawn
+                ["d", "not-an-address", True, True, "2026-09-03T10:00:00Z"], ["short"]]
+        with mock.patch.object(db, "_posthog_query", return_value={"results": rows}) as q:
+            found = fr.contacts()
+        self.assertIn("argMax(properties.email, tuple(ifNull(toInt(properties.rev), 0), timestamp))",
+                      q.call_args.args[0])
+        self.assertEqual(found, {"updates": [("both@example.com", "2026-09-01"), ("news@example.com", "2026-09-02")],
+                                 "followup": [("both@example.com", "2026-09-01")]})
+        with mock.patch.object(fr, "contacts", return_value=found), \
+             mock.patch.object(sys, "argv", ["frame_report.py", "contacts", "followup"]), \
+             mock.patch("builtins.print") as out:
+            fr.main()
+        printed = " ".join(str(c.args[0]) for c in out.call_args_list if c.args)
+        self.assertIn("both@example.com", printed)
+        self.assertNotIn("news@example.com", printed)
+
+    def test_the_page_can_reach_it(self):
+        import server
+        self.assertIs(server.POST["/api/contact"], fc.save)
+        self.assertIs(server.POST["/api/contact/prompt"], fc.prompt)
+
+
+# Run these once, in test_telemetry, not again through the import above.
+del Base, ReportProblem
+
+if __name__ == "__main__":
+    unittest.main()

tests/test_devices.py

@@ -17,6 +17,7 @@ ROOT = Path(__file__).resolve().parent.parent
 sys.path.insert(0, str(ROOT / "ui"))
 
 import frame_devices as fd  # noqa: E402
+import frame_host  # noqa: E402
 
 CONFIG = """Host lxso1
   HostName 192.168.1.109
@@ -274,7 +275,8 @@ class Pins(Base):
     def test_hashed_and_non_default_port_entries(self):
         kh = self.ssh / "known_hosts"
         kh.write_text(f"[frame.local]:2222 {KEY}\n")
-        subprocess.run(["ssh-keygen", "-H", "-f", str(kh)], capture_output=True, check=True)
+        frame_host.run_ssh(["ssh-keygen", "-H", "-f", str(kh)], capture_output=True,
+                           stdin=subprocess.DEVNULL, check=True, timeout=10)
         self.assertFalse(fd.seed_pin("d3", ["frame.local"]))  # port 22: not that entry
         self.assertTrue(fd.seed_pin("d3", ["frame.local"], port=2222))
         self.assertIn(f"frame-control-d3 {KEY}", fd.known_hosts("d3").read_text())
@@ -283,7 +285,8 @@ class Pins(Base):
         target = fd.known_hosts("d4")
         target.parent.mkdir(parents=True, exist_ok=True)
         target.write_text(f"frame-control-d4 {KEY}\n")
-        subprocess.run(["ssh-keygen", "-H", "-f", str(target)], capture_output=True, check=True)
+        frame_host.run_ssh(["ssh-keygen", "-H", "-f", str(target)], capture_output=True,
+                           stdin=subprocess.DEVNULL, check=True, timeout=10)
         self.assertNotIn("frame-control-d4", target.read_text())
         self.assertTrue(fd.pinned("d4"))
         self.assertTrue(fd.forget_pin("d4"))

tests/test_frame_android_data.py

@@ -63,7 +63,7 @@ class ObbTests(unittest.TestCase):
                 with self.assertRaisesRegex(android.FrameError, 'start this app'):
                     data.install_obb(PKG, [path])
                 stream.assert_not_called()
-            with patch.object(subprocess, 'run', return_value=subprocess.CompletedProcess([], 1, b'', b'bad hash')):
+            with patch.object(data.frame_host, 'run_ssh', return_value=subprocess.CompletedProcess([], 1, b'', b'bad hash')):
                 with self.assertRaisesRegex(android.FrameError, 'bad hash'):
                     data._stream('command')
 

tests/test_frame_host.py

@@ -0,0 +1,87 @@
+"""Captured OpenSSH output keeps working on Windows and POSIX hosts."""
+import sandbox  # noqa: F401
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+import unittest
+from pathlib import Path
+from unittest import mock
+
+sys.path.insert(0, str(Path(__file__).resolve().parent.parent / "ui"))
+import frame_host
+
+
+class CapturedSSH(unittest.TestCase):
+    def run_command(self, source, **kwargs):
+        with mock.patch.object(frame_host, "WINDOWS", True):
+            return frame_host.run_ssh([sys.executable, "-c", source], timeout=5, **kwargs)
+
+    def test_binary_output_and_input(self):
+        result = self.run_command("import sys; sys.stdout.buffer.write(sys.stdin.buffer.read()); "
+                                  "sys.stderr.buffer.write(b'error\\r\\n')",
+                                  capture_output=True, input=b"data\x00\xff")
+        self.assertEqual(result.stdout, b"data\x00\xff")
+        self.assertEqual(result.stderr, b"error\r\n")
+
+    def test_text_output_normalizes_newlines(self):
+        result = self.run_command("import sys; sys.stdout.write(sys.stdin.read()); "
+                                  "sys.stderr.buffer.write(b'first\\r\\nsecond\\rthird\\n')",
+                                  capture_output=True, input="hello\n", text=True)
+        self.assertEqual(result.stdout, "hello\n")
+        self.assertEqual(result.stderr, "first\nsecond\nthird\n")
+
+    def test_explicit_encoding_and_errors(self):
+        result = self.run_command("import sys; sys.stderr.buffer.write(b'\\xe9\\xff')",
+                                  capture_output=True, encoding="ascii", errors="replace")
+        self.assertEqual(result.stderr, "\ufffd\ufffd")
+
+    def test_check_preserves_error_output(self):
+        with self.assertRaises(subprocess.CalledProcessError) as caught:
+            self.run_command("import sys; print('out'); print('err', file=sys.stderr); sys.exit(7)",
+                             capture_output=True, text=True, check=True)
+        self.assertEqual(caught.exception.returncode, 7)
+        self.assertEqual(caught.exception.stdout, "out\n")
+        self.assertEqual(caught.exception.stderr, "err\n")
+
+    def test_timeout_preserves_partial_stderr(self):
+        with self.assertRaises(subprocess.TimeoutExpired) as caught:
+            with mock.patch.object(frame_host, "WINDOWS", True):
+                frame_host.run_ssh([sys.executable, "-c", "import sys, time; "
+                                    "sys.stderr.write('waiting'); sys.stderr.flush(); time.sleep(10)"],
+                                   capture_output=True, text=True, timeout=1)
+        self.assertEqual(caught.exception.stderr, b"waiting")
+
+    def test_streamed_stdout_is_kept_separate(self):
+        with tempfile.TemporaryFile() as output:
+            result = self.run_command("import sys; sys.stdout.buffer.write(b'file'); "
+                                      "sys.stderr.buffer.write(b'error')",
+                                      stdout=output, stderr=subprocess.PIPE)
+            output.seek(0)
+            self.assertEqual(output.read(), b"file")
+        self.assertIsNone(result.stdout)
+        self.assertEqual(result.stderr, b"error")
+
+    def test_uncaptured_windows_call_is_unchanged(self):
+        with mock.patch.object(frame_host, "WINDOWS", True), mock.patch.object(subprocess, "run") as run:
+            frame_host.run_ssh(["ssh", "-V"], stderr=subprocess.DEVNULL, timeout=5)
+        run.assert_called_once_with(["ssh", "-V"], stderr=subprocess.DEVNULL, timeout=5)
+
+    def test_posix_call_is_unchanged(self):
+        with mock.patch.object(frame_host, "WINDOWS", False), mock.patch.object(subprocess, "run") as run:
+            frame_host.run_ssh(["ssh", "-V"], capture_output=True, check=True, timeout=5)
+        run.assert_called_once_with(["ssh", "-V"], capture_output=True, check=True, timeout=5)
+
+    def test_capture_rejects_explicit_streams(self):
+        for stream in ("stdout", "stderr"):
+            with self.subTest(stream=stream), self.assertRaises(ValueError):
+                self.run_command("", capture_output=True, **{stream: subprocess.DEVNULL})
+
+    @unittest.skipUnless(shutil.which("ssh"), "needs OpenSSH")
+    def test_real_ssh_failure_returns_stderr_without_hanging(self):
+        result = frame_host.run_ssh(["ssh", "-F", os.devnull, "-o", "BatchMode=yes",
+                                    "-o", "ConnectTimeout=2", "frame-control-test.invalid", "true"],
+                                   capture_output=True, stdin=subprocess.DEVNULL, text=True, timeout=5)
+        self.assertEqual(result.returncode, 255)
+        self.assertIn("Could not resolve hostname", result.stderr)

tests/test_rdp.py

@@ -0,0 +1,161 @@
+"""Remote desktop to the Frame (frame_host.open_rdp) on each computer, with the client
+launch stubbed and a real socket standing in for the Frame's xrdp. Also the server
+staying quiet when the page goes away mid-reply, which on Windows is
+ConnectionAbortedError (WinError 10053).
+
+Run: python3 -m unittest discover -s tests
+"""
+import sandbox  # noqa: F401  (first: keeps tests off real data and services)
+import email.message
+import io
+import socket
+import sys
+import tempfile
+import unittest
+from pathlib import Path
+from unittest import mock
+
+ROOT = Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(ROOT / "ui"))
+
+import frame_host  # noqa: E402
+import server  # noqa: E402
+
+
+def platform(name):
+    """Patches frame_host to behave as on `name` ("mac", "windows" or "linux")."""
+    return mock.patch.multiple(frame_host, MAC=name == "mac", WINDOWS=name == "windows",
+                               LINUX=name == "linux")
+
+
+class OpenRdp(unittest.TestCase):
+    def setUp(self):
+        self.xrdp = socket.socket()
+        self.xrdp.bind(("127.0.0.1", 0))
+        self.xrdp.listen(4)
+        self.addCleanup(self.xrdp.close)
+        port = mock.patch.object(frame_host, "RDP_PORT", self.xrdp.getsockname()[1])
+        port.start()
+        self.addCleanup(port.stop)
+        self.spawned = []
+        spawn = mock.patch.object(frame_host, "_spawn", self.spawned.append)
+        spawn.start()
+        self.addCleanup(spawn.stop)
+        cache = tempfile.TemporaryDirectory()
+        self.addCleanup(cache.cleanup)
+        self.cache = Path(cache.name)
+        where = mock.patch.object(frame_host, "cache_dir", lambda *p: self.cache.joinpath(*p))
+        where.start()
+        self.addCleanup(where.stop)
+
+    def test_windows_signs_in_as_steamos(self):
+        # The report: mstsc /v:HOST alone offers the Windows account, which xrdp rejects.
+        with platform("windows"):
+            message = frame_host.open_rdp("frame", "127.0.0.1")
+        self.assertEqual(len(self.spawned), 1)
+        argv = self.spawned[0]
+        self.assertEqual(argv[0], "mstsc.exe")
+        self.assertNotIn("/v:127.0.0.1", argv)
+        rdp = Path(argv[1])
+        self.assertEqual(rdp.suffix, ".rdp")
+        data = rdp.read_bytes()  # CRLF lines, as mstsc writes them, however this OS ends lines
+        self.assertNotIn(b"\r\r", data)
+        lines = data.decode("utf-8").split("\r\n")
+        self.assertIn("full address:s:127.0.0.1", lines)
+        self.assertIn("username:s:steamos", lines)
+        self.assertIn("steamos", message)
+        self.assertIn("Developer Mode password", message)
+        self.assertIn("certificate", message)
+        self.assertIn("Connect", message)
+
+    def test_nothing_listening_says_why_and_opens_nothing(self):
+        self.xrdp.close()
+        for name in ("windows", "mac", "linux"):
+            with self.subTest(name), platform(name), self.assertRaises(frame_host.Unreachable) as cm:
+                frame_host.open_rdp("frame", "127.0.0.1")
+            self.assertIn("Developer Mode", str(cm.exception))
+            self.assertIn(f"port {frame_host.RDP_PORT} refused", str(cm.exception))
+        self.assertEqual(self.spawned, [])
+
+    def test_says_which_way_it_failed(self):
+        # Only a refused port says xrdp is off; a wrong address or a silent network say so instead.
+        for error, says in ((socket.gaierror(8, "nodename nor servname provided"), "Devices tab"),
+                            (socket.timeout("timed out"), "didn't answer"),
+                            (OSError(65, "No route to host"), "didn't answer")):
+            with self.subTest(says), mock.patch.object(frame_host.socket, "create_connection", side_effect=error), \
+                    platform("windows"), self.assertRaises(frame_host.Unreachable) as cm:
+                frame_host.open_rdp("frame", "frame.local")
+            self.assertIn(says, str(cm.exception))
+            self.assertNotIn("refused", str(cm.exception))
+        self.assertEqual(self.spawned, [])
+
+    def test_server_says_it_as_the_persons_to_fix(self):
+        # A 400 with the message, not a 500 filed as an error diagnostic.
+        self.xrdp.close()
+        with mock.patch.multiple(server, LOCAL=False, LINK=None, HOST_OPTS=["-o", "HostName=127.0.0.1"]), \
+                self.assertRaises(server.Failure) as cm:
+            server.open_thing({"what": "rdp"})
+        self.assertEqual(cm.exception.status, 400)
+        self.assertIn("Developer Mode", str(cm.exception))
+
+    def test_one_file_per_address(self):
+        with platform("windows"):
+            a, b = frame_host.rdp_file("192.168.1.5"), frame_host.rdp_file("fe80::1%eth0")
+            c, d = frame_host.rdp_file("fe80::1%2"), frame_host.rdp_file("fe80::1:2")
+        self.assertEqual(len({a, b, c, d}), 4)
+        self.assertIn(b"full address:s:192.168.1.5\r\n", a.read_bytes())
+        self.assertIn(b"full address:s:fe80::1%eth0\r\n", b.read_bytes())
+
+    def test_address_cant_add_lines_to_the_file(self):
+        with platform("windows"), self.assertRaises(frame_host.HostError):
+            frame_host.rdp_file("frame\r\nusername:s:root")
+        self.assertEqual(list(self.cache.iterdir()), [])
+
+    def test_linux_clients_get_the_user(self):
+        with platform("linux"), mock.patch.object(frame_host, "which",
+                                                  lambda n, *e: "/usr/bin/xfreerdp" if n == "xfreerdp" else None):
+            message = frame_host.open_rdp("frame", "127.0.0.1")
+        self.assertEqual(self.spawned, [["xfreerdp", "/v:127.0.0.1", "/u:steamos", "/dynamic-resolution"]])
+        self.assertIn("steamos", message)
+
+
+class PageGoneAway(unittest.TestCase):
+    """The report's server log: the page closed while index.html was being sent, and the
+    server logged it as a 500, tried to answer anyway, and filed an error diagnostic."""
+
+    def handler(self, path="/"):
+        h = server.Handler.__new__(server.Handler)
+        h.command, h.path, h.request_version = "GET", path, "HTTP/1.1"
+        h.requestline, h.client_address = f"GET {path} HTTP/1.1", ("127.0.0.1", 1)
+        h.headers = email.message.Message()
+        h.headers["Host"] = "127.0.0.1:1"
+        h.wfile = mock.Mock(write=mock.Mock(side_effect=ConnectionAbortedError(10053, "aborted")))
+        h.close_connection = True
+        return h
+
+    def test_not_a_server_error(self):
+        h = self.handler()
+        with mock.patch.object(server.frame_telemetry, "diagnostic") as diagnostic, \
+                mock.patch.object(sys, "stderr", io.StringIO()), self.assertRaises(server.ClientGone):
+            h.do_GET()
+        diagnostic.assert_not_called()
+        self.assertEqual(h.wfile.write.call_count, 1)  # no second, 500 reply
+
+    def test_server_logs_nothing(self):
+        srv = server.LoopbackServer.__new__(server.LoopbackServer)
+        err = io.StringIO()
+        with mock.patch.object(sys, "stderr", err):
+            try:
+                raise server.ClientGone()
+            except server.ClientGone:
+                srv.handle_error(None, ("127.0.0.1", 1))
+            self.assertEqual(err.getvalue(), "")
+            try:
+                raise RuntimeError("real")
+            except RuntimeError:
+                srv.handle_error(None, ("127.0.0.1", 1))
+        self.assertIn("RuntimeError: real", err.getvalue())
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/test_server.py

@@ -111,6 +111,8 @@ class ServerGuards(unittest.TestCase):
             ("/api/volume", {"level": 1.5}),
             ("/api/clipboard", {"text": ""}),
             ("/api/open", {"what": "anything-else"}),
+            ("/api/open", {"what": "shot", "id": "1/250820/../../.ssh/id_ed25519"}),
+            ("/api/open", {"what": "shot"}),
             ("/api/shots/save", {"ids": []}),
             ("/api/shots/save", {"ids": "1/250820/20260925225208_1.jpg"}),
             ("/api/shots/save", {"ids": [1]}),
@@ -121,6 +123,10 @@ class ServerGuards(unittest.TestCase):
             status, payload = self.post(path, body)
             self.assertEqual(status, 400, f"{path} {body} -> {payload}")
 
+    def test_showing_a_shot_needs_it_saved_here(self):
+        status, payload = self.post("/api/open", {"what": "shot", "id": "1/250820/19990101000000_1.jpg"})
+        self.assertEqual(status, 404, payload)
+
     def test_screenshot_ids_checked_before_ssh(self):
         for shot in ("../../etc/passwd", "1/250820/x.jpg", "1/2/20260925225208_1.jpg;id", "1/250820/20260925225208_1.gif"):
             status, _, _ = self.request("GET", f"/api/shots/image?id={quote(shot)}", headers={"X-Frame-UI": "1"})
@@ -279,6 +285,18 @@ class OneServer(unittest.TestCase):
         r = conn.getresponse()
         self.assertEqual(r.status, 403, r.read())
 
+    @unittest.skipIf(os.name == "nt", "no SIGTERM on Windows")
+    def test_sigterm_while_the_app_holds_stdin_exits_cleanly(self):
+        """The app keeps stdin open; a stop signal used to abort Python (SIGABRT) at exit."""
+        env = {**os.environ, "FRAME_CONTROL_DATA_DIR": tempfile.mkdtemp(prefix="frame-one-server-"),
+               "FRAME_ALIAS": "frame-control-test.invalid"}
+        proc = subprocess.Popen([sys.executable, str(ROOT / "ui" / "server.py"), "--port", "0", "--exit-on-eof"],
+                                env=env, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True)
+        self.addCleanup(lambda: (proc.stdin.close(), proc.stdout.close()))
+        self.assertIn("Frame Control on", proc.stdout.readline())
+        proc.terminate()
+        self.assertEqual(proc.wait(30), 0, proc.stdout.read())
+
 
 class ArtworkSettings(unittest.TestCase):
     """The settings panel's endpoints, with and without the page's X-Frame-UI key."""

tests/test_telemetry.py

@@ -392,13 +392,14 @@ class ReportProblem(Base):
         got = self.serve()
         tm.update_settings({"usage": False})  # analytics off: a deliberate report still goes
         res = fr.send({"kind": "idea", "title": "Live view stops", "message": "It stops after a minute.",
-                       "contact": "me@example.com"})
+                       "contact": "me@example.com", "contactFollowup": True})
         path, body = got[0]
         event = body["batch"][0]
         self.assertEqual((path, body["api_key"], event["event"]), ("/batch/", "phc_test", "problem_report"))
         props = event["properties"]
         self.assertEqual((props["kind"], props["title"], props["message"], props["contact"], props["report_id"]),
                          ("idea", "Live view stops", "It stops after a minute.", "me@example.com", res["id"]))
+        self.assertIs(props["contact_followup"], True)
         self.assertEqual((props["$process_person_profile"], props["$geoip_disable"]), (False, True))
         self.assertNotEqual(event["distinct_id"], tm.settings()["id"])  # not linked to the analytics
         self.assertIn(res["id"], res["message"])
@@ -421,8 +422,9 @@ class ReportProblem(Base):
 
     def test_the_inbox_skips_malformed_reports(self):
         good = ["2026-09-28T09:50:00Z", "AB12CD34", "bug", "Live view stops", "It stops.", None,
-                "0.4.0", "macOS", "", ""]
-        rows = [["2026-09-28T10:00:00Z", "X", "bug", "Hand-made", None, None, None, None, None, None], ["short"], good]
+                "0.4.0", "macOS", "", "", None]
+        rows = [["2026-09-28T10:00:00Z", "X", "bug", "Hand-made", None, None, None, None, None, None, None],
+                ["short"], good]
         with mock.patch.object(db, "_posthog_query", return_value={"results": rows}), \
              mock.patch.object(sys, "argv", ["frame_report.py", "inbox"]), \
              mock.patch("builtins.print") as out:

tests/test_windows_fixes.py

@@ -0,0 +1,162 @@
+"""Windows-only paths, faked on any OS: ~/.ssh/config's ACL and link-local IPv6 zones.
+
+Run: python3 -m unittest discover -s tests
+"""
+import sandbox  # noqa: F401  (first: keeps tests off real data and services)
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+import unittest
+from pathlib import Path
+from unittest import mock
+
+ROOT = Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(ROOT / "ui"))
+
+import frame_host  # noqa: E402
+import frame_devices as fd  # noqa: E402
+
+REFUSED = ("Bad permissions. Try removing permissions for user: UNKNOWN\\UNKNOWN (S-1-5-21-1-2-3-1000) "
+           "on file C:/Users/bob/.ssh/config.\r\nBad owner or permissions on C:\\Users\\bob/.ssh/config\r\n")
+
+
+def ran(*results):
+    """subprocess.run stand-in answering whoami, then icacls."""
+    calls = []
+
+    def run(argv, **kw):
+        calls.append(argv)
+        return results[len(calls) - 1]
+    return run, calls
+
+
+class MakePrivate(unittest.TestCase):
+    def test_windows_sets_owner_only_acl_by_sid(self):
+        run, calls = ran(subprocess.CompletedProcess([], 0, '"desktop\\björn","S-1-5-21-9-8-7-1001"\r\n'.encode("cp850")),
+                         subprocess.CompletedProcess([], 0))
+        with mock.patch.object(frame_host, "WINDOWS", True), mock.patch.object(frame_host.subprocess, "run", run):
+            self.assertTrue(frame_host.make_private(Path("C:/x/config")))
+        self.assertEqual(calls[1][1:], [str(Path("C:/x/config")), "/inheritance:r", "/grant:r",
+                                        "*S-1-5-21-9-8-7-1001:F", "*S-1-5-18:F", "*S-1-5-32-544:F"])
+
+    def test_windows_falls_back_to_username_and_reports_failure(self):
+        run, calls = ran(subprocess.CompletedProcess([], 1, b""), subprocess.CompletedProcess([], 5))
+        with mock.patch.object(frame_host, "WINDOWS", True), mock.patch.object(frame_host.subprocess, "run", run), \
+                mock.patch.dict(os.environ, {"USERNAME": "bob"}):
+            self.assertFalse(frame_host.make_private(Path("config")))
+        self.assertIn("bob:F", calls[1])
+
+    @unittest.skipIf(os.name == "nt", "POSIX modes")
+    def test_posix_chmods_600(self):
+        with tempfile.NamedTemporaryFile() as f:
+            os.chmod(f.name, 0o644)
+            self.assertTrue(frame_host.make_private(f.name))
+            self.assertEqual(os.stat(f.name).st_mode & 0o777, 0o600)
+
+
+class ConfigWrites(unittest.TestCase):
+    def setUp(self):
+        self.ssh = Path(tempfile.mkdtemp(prefix="frame-acl-"))
+        self.addCleanup(shutil.rmtree, self.ssh, ignore_errors=True)
+        self.config = self.ssh / "config"
+
+    def test_devices_and_connect_writes_make_the_file_private(self):
+        import frame_connect as fc
+        self.config.write_text("Host other\n  User me\n", encoding="utf-8")
+        with mock.patch.object(frame_host, "make_private", return_value=True) as private, \
+                mock.patch.object(fc, "SSH_DIR", self.ssh), mock.patch.object(fc, "CONFIG", self.config):
+            fc.write_config("10.0.0.5")
+            self.assertTrue(fd.repair_permissions(self.config))
+            fd.rewrite_block("frame", path=self.config, user="deck")
+        self.assertEqual(private.call_count, 3)
+        self.assertIn("User deck", self.config.read_text(encoding="utf-8"))
+        self.assertTrue(all(Path(c.args[0]).parent == self.ssh for c in private.call_args_list))
+        self.assertIn("Host other", self.config.read_text(encoding="utf-8"))
+
+    def test_setup_runs_isolated_as_the_app_starts_it(self):
+        r = subprocess.run([sys.executable, "-I", "-B", str(ROOT / "ui" / "frame_connect.py"), "--help"],
+                           capture_output=True, text=True, stdin=subprocess.DEVNULL, timeout=30)
+        self.assertNotIn("ModuleNotFoundError", r.stderr)
+        self.assertIn("frame_connect.py", r.stdout + r.stderr)
+
+    def test_repair_keeps_the_bytes_and_skips_a_missing_file(self):
+        self.assertFalse(fd.repair_permissions(self.config))
+        data = "# caf\xe9 (ANSI, not UTF-8)\r\nHost a\r\n".encode("cp1252")
+        self.config.write_bytes(data)
+        with mock.patch.object(frame_host, "make_private", return_value=True):
+            self.assertTrue(fd.repair_permissions(self.config))
+        self.assertEqual(self.config.read_bytes(), data)
+
+    def test_repair_fails_without_the_acl_and_leaves_the_file(self):
+        self.config.write_bytes(b"Host a\n")
+        before = self.config.stat().st_ino
+        with mock.patch.object(frame_host, "make_private", return_value=False):
+            self.assertFalse(fd.repair_permissions(self.config))
+        self.assertEqual((self.config.read_bytes(), self.config.stat().st_ino), (b"Host a\n", before))
+        self.assertEqual(sorted(f.name for f in self.ssh.iterdir()), ["config", fd.LOCK_NAME])
+
+
+class ServerRepair(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        import server
+        cls.server = server
+
+    def setUp(self):
+        self.ssh = Path(tempfile.mkdtemp(prefix="frame-acl-"))
+        self.addCleanup(shutil.rmtree, self.ssh, ignore_errors=True)
+        (self.ssh / "config").write_text("Host a\n", encoding="utf-8")
+        patches = [mock.patch.dict(os.environ, {"FRAME_CONTROL_SSH_DIR": str(self.ssh)}),
+                   mock.patch.object(frame_host, "WINDOWS", True),
+                   mock.patch.object(self.server, "_config_repaired", False)]
+        for p in patches:
+            p.start()
+            self.addCleanup(p.stop)
+
+    def test_repairs_the_refused_config_once(self):
+        with mock.patch.object(fd, "repair_permissions", return_value=True) as repair:
+            self.assertTrue(self.server.repair_ssh_config(REFUSED))
+            self.assertFalse(self.server.repair_ssh_config(REFUSED))
+        repair.assert_called_once()
+
+    def test_leaves_other_files_and_errors_alone(self):
+        key = REFUSED.replace(".ssh/config", ".ssh/id_ed25519_frame")
+        with mock.patch.object(fd, "repair_permissions") as repair:
+            self.assertFalse(self.server.repair_ssh_config(key))
+            self.assertFalse(self.server.repair_ssh_config("ssh: connect to host frame port 22: timed out"))
+            with mock.patch.object(frame_host, "WINDOWS", False):
+                self.assertFalse(self.server.repair_ssh_config(REFUSED))
+        repair.assert_not_called()
+
+    def test_ssh_retries_after_repairing(self):
+        results = iter([subprocess.CompletedProcess([], 255, "", REFUSED), subprocess.CompletedProcess([], 0, "ok", "")])
+        with mock.patch.object(frame_host, "run_ssh", lambda *a, **k: next(results)), \
+                mock.patch.object(fd, "repair_permissions", return_value=True), \
+                mock.patch.object(self.server, "LINK", None):
+            self.assertEqual(self.server.ssh("true"), "ok")
+
+
+class LinkLocalZone(unittest.TestCase):
+    """A .local name answering on fe80::: Windows' ssh needs fe80::1%12, not %wireless_32768."""
+
+    def probe(self, windows):
+        import frame_link as fl
+        info = [(fl.socket.AF_INET6, fl.socket.SOCK_STREAM, 6, "", ("fe80::1", 22, 0, 12))]
+        sock = mock.MagicMock()
+        with mock.patch.object(frame_host, "WINDOWS", windows), \
+                mock.patch.object(fl.socket, "getaddrinfo", return_value=info), \
+                mock.patch.object(fl.socket, "socket", return_value=sock), \
+                mock.patch.object(fl.socket, "if_indextoname", return_value="wireless_32768", create=True):
+            return fl.probe("frame.local", 22)["ip"]
+
+    def test_windows_uses_the_numeric_zone(self):
+        self.assertEqual(self.probe(True), "fe80::1%12")
+
+    def test_elsewhere_uses_the_interface_name(self):
+        self.assertEqual(self.probe(False), "fe80::1%wireless_32768")
+
+
+if __name__ == "__main__":
+    unittest.main()

ui/frame_android.py

@@ -47,8 +47,8 @@ def ssh(cmd, input=None, timeout=120):
     try:
         # No inherited stdin (see server.ssh): Windows' ssh.exe would wait on it.
         feed = {'input': input} if input is not None else {'stdin': subprocess.DEVNULL}
-        p = subprocess.run(['ssh', *SSH_OPTS, FRAME, cmd], capture_output=True, **feed,
-                           timeout=timeout, text=isinstance(input, str) or input is None)
+        p = frame_host.run_ssh(['ssh', *SSH_OPTS, FRAME, cmd], capture_output=True, **feed,
+                               timeout=timeout, text=isinstance(input, str) or input is None)
     except subprocess.TimeoutExpired:
         raise FrameError(f'timed out talking to {FRAME}')
     if p.returncode != 0:
@@ -120,7 +120,7 @@ def _copy(src, dest, executable=False, timeout=600):
     else:
         cmd = ['scp', *SSH_OPTS, src, f'{FRAME}:{dest}']
     try:
-        subprocess.run(cmd, check=True, capture_output=True, stdin=subprocess.DEVNULL, text=True, timeout=timeout)
+        frame_host.run_ssh(cmd, check=True, capture_output=True, stdin=subprocess.DEVNULL, text=True, timeout=timeout)
     except subprocess.TimeoutExpired:
         raise FrameError(f'copying {name} to the Frame timed out')
     except subprocess.CalledProcessError as e:

ui/frame_android_data.py

@@ -11,16 +11,17 @@ import tempfile
 import uuid
 
 import frame_android as android
+import frame_host
 
 REMOTE = Path(android.ROOT) / 'frame/android/app-data.py'
 
 
 def _stream(command, src=None, dst=None):
     try:
-        result = subprocess.run(['ssh', *android.SSH_OPTS, android.FRAME, command],
-                                stdin=src if src else subprocess.DEVNULL,
-                                stdout=dst if dst else subprocess.PIPE,
-                                stderr=subprocess.PIPE, timeout=1800)
+        result = frame_host.run_ssh(['ssh', *android.SSH_OPTS, android.FRAME, command],
+                                    stdin=src if src else subprocess.DEVNULL,
+                                    stdout=dst if dst else subprocess.PIPE,
+                                    stderr=subprocess.PIPE, timeout=1800)
     except subprocess.TimeoutExpired:
         raise android.FrameError('app-data transfer timed out')
     except OSError as error:

ui/frame_connect.py

@@ -24,6 +24,10 @@ import urllib.error
 import urllib.request
 from pathlib import Path
 
+# The app runs this with python -I, which leaves the script's folder off sys.path.
+sys.path.insert(0, str(Path(__file__).resolve().parent))
+import frame_host  # noqa: E402
+
 FRAME_USER = os.environ.get("FRAME_USER", "steamos")
 USER_FROM_ENV = "FRAME_USER" in os.environ
 FRAME_ALIAS = os.environ.get("FRAME_ALIAS", "frame")
@@ -330,8 +334,9 @@ def _write_config(host, port, user):
     block = config_block(host, port, user)
     tmp = CONFIG.with_name(f"config.frame-control.{os.getpid()}.tmp")
     tmp.write_text("\n".join(block + kept) + "\n", encoding="utf-8")
-    if os.name != "nt":
-        tmp.chmod(0o600)
+    if not frame_host.make_private(tmp):
+        say("    couldn't make ~/.ssh/config private; if ssh says \"Bad owner or permissions\", "
+            "Frame Control repairs it when it next connects")
     # On Windows a running ssh.exe (Frame Control's own, say) keeps the config open
     # and locked, so the swap can fail for a moment; keep trying for a while.
     for attempt in range(60):
@@ -349,9 +354,9 @@ def _write_config(host, port, user):
 
 def key_login_works():
     # accept-new: trust a first-seen host key (as the copy step does); a changed one still fails.
-    return subprocess.run(["ssh", "-o", "BatchMode=yes", "-o", "ConnectTimeout=5",
-                           "-o", "StrictHostKeyChecking=accept-new", FRAME_ALIAS, "true"],
-                          capture_output=True).returncode == 0
+    return frame_host.run_ssh(["ssh", "-o", "BatchMode=yes", "-o", "ConnectTimeout=5",
+                               "-o", "StrictHostKeyChecking=accept-new", FRAME_ALIAS, "true"],
+                              capture_output=True).returncode == 0
 
 
 def configured_user():

ui/frame_contact.py

@@ -0,0 +1,218 @@
+"""An email address the person chooses to leave, and what it may be used for. Python stdlib only.
+
+Two separate opt-in choices, both off until ticked:
+
+- updates: occasional notices about Frame Control releases and updates
+- followup: the maintainer may ask follow-up questions, mainly about problem reports
+
+The address and the choices are kept on this computer (frame_host.data_dir('contact')) and
+sent privately to Frame Control's PostHog project as a `contact_consent` event, the same way
+as problem reports (frame_report.py), so only the maintainer can read them. Every change
+sends a new event under this copy's own random contact id (not the analytics id), numbered
+by `rev`, and the highest rev for an id is the one that counts, whatever the clocks say:
+removing the address sends a withdrawal with no address in it, and wipes the address from
+the local log of what was sent. The maintainer lists who agreed to what with
+`python3 ui/frame_report.py contacts`. Nothing here sends email.
+
+A change that can't be sent (offline) waits in the state file and is retried in the
+background, so a withdrawal is never lost. The page's one-time prompt is remembered here
+too: once it has been shown or dismissed it never comes back.
+"""
+import json
+import os
+import re
+import threading
+import time
+import uuid
+
+import frame_host
+import frame_telemetry
+
+STATE = frame_host.data_dir('contact')
+FILE = STATE / 'contact.json'
+EMAIL_MAX = 254
+EMAIL_RE = re.compile(r'[^@\s]+@[^@\s]+\.[^@\s.]+')
+PROMPTS = ('new', 'shown', 'dismissed', 'answered')
+RETRY_EVERY = 600
+
+_lock = threading.RLock()
+_send_lock = threading.Lock()  # one send at a time, so events reach PostHog in rev order
+_removed = {}  # address (lower case) -> when it was removed, for reports still being sent then
+_wake = threading.Event()
+_retrier = None
+
+
+def _defaults():
+    return {'id': str(uuid.uuid4()), 'email': '', 'updates': False, 'followup': False,
+            'prompt': 'new', 'pending': None, 'rev': 0}
+
+
+def load():
+    with _lock:
+        s = _defaults()
+        try:
+            with open(FILE) as f:
+                saved = json.load(f)
+            if isinstance(saved, dict):
+                s.update({k: v for k, v in saved.items() if k in s})
+        except (OSError, ValueError):
+            pass
+        return s
+
+
+def _save(s):
+    STATE.mkdir(parents=True, exist_ok=True)
+    tmp = FILE.with_suffix('.tmp')
+    tmp.write_text(json.dumps(s, indent=1))
+    os.replace(tmp, FILE)
+
+
+def valid_email(email):
+    return len(email) <= EMAIL_MAX and bool(EMAIL_RE.fullmatch(email))
+
+
+def state():
+    """What the page shows. showPrompt: the one-time prompt hasn't been shown or answered yet,
+    and the Frame has connected at least once (setup worked), so it never greets a new install."""
+    s = load()
+    set_up = bool(frame_telemetry.settings().get('frames_seen'))
+    return {'email': s['email'], 'updates': s['updates'], 'followup': s['followup'],
+            'waiting': s['pending'] is not None, 'showPrompt': s['prompt'] == 'new' and set_up}
+
+
+def _event(s):
+    email = s['email'] if s['updates'] or s['followup'] else ''
+    return {'event': 'contact_consent', 'distinct_id': s['id'], 'uuid': str(uuid.uuid4()),
+            'timestamp': time.strftime('%Y-%m-%dT%H:%M:%SZ', time.gmtime()),
+            'properties': {**frame_telemetry.common(), 'email': email, 'updates': bool(email and s['updates']),
+                           'followup': bool(email and s['followup']),
+                           'action': 'set' if email else 'withdraw', 'rev': s['rev'], 'level': 'contact'}}
+
+
+def _send_pending(block=True):
+    """Send what's waiting, including changes made while sending. True if nothing is left
+    waiting. Without block, a send already under way is left to pick up the newest change."""
+    if not _send_lock.acquire(blocking=block):
+        return False
+    try:
+        while True:
+            with _lock:
+                event = load()['pending']
+            if event is None:
+                break
+            try:
+                frame_telemetry.post([event], timeout=30)
+            except frame_telemetry.SendError:
+                return False
+            _sent(event)
+    finally:
+        _send_lock.release()
+    # A change saved just as this finished found the lock still held and left it to us.
+    with _lock:
+        left = load()['pending'] is not None
+    return _send_pending(block=False) if left else True
+
+
+def _sent(event):
+    with _lock:
+        s = load()
+        if s['pending'] and s['pending'].get('uuid') == event['uuid']:  # not replaced meanwhile
+            s['pending'] = None
+            _save(s)
+        # A withdrawal, or the address still in use: not an old one removed while this was on its way.
+        if event['properties']['email'] in ('', s['email']):
+            try:
+                frame_telemetry.record_sent([event])
+            except OSError:
+                pass
+
+
+def _forget_locally(email):
+    """Take a removed address out of the log of what was sent (contact events and reports)."""
+    with frame_telemetry._lock:
+        _removed[email.lower()] = time.time()
+        rows = frame_telemetry._read_lines(frame_telemetry.SENT)
+        hit = False
+        for e in rows:
+            p = e.get('properties') or {}
+            for k in ('email', 'contact'):
+                if p.get(k) and str(p[k]).strip().lower() == email.lower():
+                    p[k], hit = '<removed>', True
+        if hit:
+            frame_telemetry._write_lines(frame_telemetry.SENT, rows)
+
+
+def redact_removed(event, started):
+    """Before logging a report (started at time.time() `started`) whose address was removed
+    while it was being sent: take the address out. Call with frame_telemetry._lock held, so a
+    removal can't slip between this and the log."""
+    p = event.get('properties') or {}
+    removed_at = _removed.get(str(p.get('contact') or '').strip().lower())
+    if removed_at is not None and started <= removed_at:
+        p['contact'] = '<removed>'
+
+
+def save(body):
+    """Set, change or remove the address and the two choices. An address needs at least one
+    choice ticked; an empty address (or neither ticked) removes it and withdraws both."""
+    email = str(body.get('email') or '').strip()
+    updates, followup = bool(body.get('updates')), bool(body.get('followup'))
+    if email and not valid_email(email):
+        raise ValueError("that doesn't look like an email address")
+    if email and not (updates or followup):
+        raise ValueError('tick what the address may be used for, or remove it')
+    if not email:
+        updates = followup = False
+    with _lock:
+        s = load()
+        old = s['email']
+        changed = (email, updates, followup) != (s['email'], s['updates'], s['followup'])
+        s.update(email=email, updates=updates, followup=followup)
+        if body.get('fromPrompt') or email:
+            s['prompt'] = 'answered'
+        if changed:
+            # Only the newest choice matters, so it replaces anything still waiting. A withdrawal
+            # is sent even for an address still waiting here: its send may already be under way.
+            s['rev'] += 1
+            s['pending'] = _event(s)
+        _save(s)
+        if old and old.lower() != email.lower():
+            try:
+                _forget_locally(old)
+            except OSError:
+                pass
+    if changed and not _send_pending(block=False):
+        _wake.set()  # offline, or a send under way that will take this change with it
+    return state()
+
+
+def prompt(body):
+    """The one-time prompt was shown, or dismissed with No thanks. Either way it stays gone."""
+    action = body.get('prompt')
+    if action not in ('shown', 'dismissed'):
+        raise ValueError('unknown prompt action')
+    with _lock:
+        s = load()
+        if s['prompt'] in ('new', 'shown'):
+            s['prompt'] = action
+            _save(s)
+    return state()
+
+
+def start():
+    """Retry a change that couldn't be sent, from now on in the background."""
+    global _retrier
+    if _retrier:
+        return
+
+    def loop():
+        while True:
+            try:
+                _send_pending()
+            except Exception:
+                pass
+            _wake.wait(RETRY_EVERY)
+            _wake.clear()
+
+    _retrier = threading.Thread(target=loop, name='contact', daemon=True)
+    _retrier.start()

ui/frame_devices.py

@@ -241,8 +241,7 @@ def _write_config(path, text, expected):
     try:
         with os.fdopen(fd_, "w", encoding="utf-8") as fh:
             fh.write(text)
-        if not frame_host.WINDOWS:
-            tmp.chmod(0o600)
+        frame_host.make_private(tmp)  # best effort: an edit still beats none (repair_permissions insists)
         for attempt in range(20):  # Windows: a running ssh.exe can hold the file for a moment
             if read_config(path) != expected:
                 return False
@@ -271,6 +270,37 @@ def _edit_config(path, change):
         raise OSError(f"{path} kept changing while Frame Control tried to update it")
 
 
+def repair_permissions(path=None):
+    """Give ~/.ssh/config make_private's ACL by swapping in a byte-for-byte copy: for a
+    file Windows' OpenSSH refuses ("Bad owner or permissions"). -> True only if the copy
+    got that ACL and replaced the file."""
+    path = Path(path or ssh_config())
+    with _config_lock, file_lock(path.with_name(LOCK_NAME)):
+        try:
+            data = path.read_bytes()
+        except OSError:
+            return False
+        fd_, tmp = tempfile.mkstemp(prefix="config.frame-control.", dir=str(path.parent))
+        tmp = Path(tmp)
+        try:
+            with os.fdopen(fd_, "wb") as fh:
+                fh.write(data)
+            if not frame_host.make_private(tmp):
+                return False
+            for attempt in range(20):  # a running ssh.exe can hold the file for a moment
+                if path.read_bytes() != data:
+                    return False
+                try:
+                    os.replace(tmp, path)
+                    return True
+                except PermissionError:
+                    time.sleep(0.25)
+            return False
+        finally:
+            if tmp.exists():
+                tmp.unlink()
+
+
 def rewrite_block(alias, path=None, hostname=None, user=None, port=None, expect=None):
     """Change HostName, User or Port inside ALIAS's managed block, leaving the rest of the
     file alone. -> True if the file changed. Does nothing if there's no such block, or
@@ -333,8 +363,8 @@ def remove_block(alias, path=None):
 def effective_port(alias, config):
     """The port ssh uses for ALIAS with this config file (`ssh -F FILE -G ALIAS`), else 22."""
     try:
-        out = subprocess.run(["ssh", "-F", str(config), "-G", alias], capture_output=True, text=True,
-                             stdin=subprocess.DEVNULL, timeout=10).stdout
+        out = frame_host.run_ssh(["ssh", "-F", str(config), "-G", alias], capture_output=True, text=True,
+                                 stdin=subprocess.DEVNULL, timeout=10).stdout
     except (OSError, subprocess.TimeoutExpired):
         return 22
     m = re.search(r"^port (\d+)$", out, re.M)
@@ -346,8 +376,8 @@ def effective_port(alias, config):
 
 def _keygen(*args):
     try:
-        return subprocess.run(["ssh-keygen", *args], capture_output=True, stdin=subprocess.DEVNULL, text=True,
-                              timeout=10)
+        return frame_host.run_ssh(["ssh-keygen", *args], capture_output=True, stdin=subprocess.DEVNULL, text=True,
+                                  timeout=10)
     except (OSError, subprocess.TimeoutExpired):
         return None
 

ui/frame_host.py

@@ -5,12 +5,16 @@ Everything here runs on your computer, not the Frame. Python stdlib only.
 CLI (used by the Electron app, so terminal handling lives in one place):
   python3 ui/frame_host.py terminal -- CMD [ARG...]   # open CMD in a terminal window
 """
+import hashlib
+import io
 import os
 import shlex
 import shutil
+import socket
 import ssl
 import subprocess
 import sys
+import tempfile
 from pathlib import Path
 
 MAC = sys.platform == "darwin"
@@ -32,6 +36,45 @@ class HostError(RuntimeError):
     pass
 
 
+class Unreachable(HostError):
+    """The Frame, or a service on it, didn't answer: the person's to sort out, not a fault here."""
+
+
+def run_ssh(argv, **kwargs):
+    """Run an OpenSSH tool without Windows' redirected-stderr pipe hang.
+
+    A real temporary file avoids OpenSSH's blocked asynchronous stderr writes,
+    while keeping subprocess.run's captured output, text, check and timeout API.
+    """
+    if not WINDOWS:
+        return subprocess.run(argv, **kwargs)
+    if kwargs.pop("capture_output", False):
+        if kwargs.get("stdout") is not None or kwargs.get("stderr") is not None:
+            raise ValueError("stdout and stderr arguments may not be used with capture_output")
+        kwargs.update(stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    if kwargs.get("stderr") != subprocess.PIPE:
+        return subprocess.run(argv, **kwargs)
+    check = kwargs.pop("check", False)
+    text = any(kwargs.get(key) for key in ("text", "universal_newlines", "encoding", "errors"))
+    with tempfile.TemporaryFile() as stderr:
+        kwargs["stderr"] = stderr
+        try:
+            result = subprocess.run(argv, **kwargs)
+        except subprocess.TimeoutExpired as error:
+            stderr.seek(0)
+            error.stderr = stderr.read()
+            raise
+        stderr.seek(0)
+        if text:
+            with io.TextIOWrapper(stderr, encoding=kwargs.get("encoding"), errors=kwargs.get("errors")) as reader:
+                result.stderr = reader.read()
+        else:
+            result.stderr = stderr.read()
+    if check:
+        result.check_returncode()
+    return result
+
+
 def data_dir(*parts):
     """Per-user app data: ~/Library/Application Support, %APPDATA% or $XDG_DATA_HOME
     (or $FRAME_CONTROL_DATA_DIR, which the tests point at a throwaway directory)."""
@@ -153,6 +196,19 @@ def open_path(path):
                      stderr=subprocess.DEVNULL, **DETACHED)
 
 
+def reveal_path(path):
+    """Show a file selected in its folder (Linux file managers vary, so there the folder opens)."""
+    path = Path(path)
+    if MAC:
+        cmd = ["open", "-R", str(path)]
+    elif WINDOWS:
+        cmd = f'explorer /select,"{path}"'  # as one string: Explorer wants the quotes after the comma
+    else:
+        return open_path(path.parent)
+    subprocess.Popen(cmd, stdin=subprocess.DEVNULL, stdout=subprocess.DEVNULL,
+                     stderr=subprocess.DEVNULL, **DETACHED)
+
+
 open_url = open_path  # the same openers hand URLs to the default browser
 
 
@@ -228,10 +284,46 @@ def clipboard_text():
     raise HostError("Can't read the clipboard")
 
 
+# What Windows' OpenSSH says when it refuses ~/.ssh/config (or a key) for its ACL.
+BAD_PERMISSIONS = "Bad owner or permissions on "
+
+
+def make_private(path):
+    """Leave only this user able to open PATH, as ssh insists for ~/.ssh/config.
+    Windows: an ACL of just this user, SYSTEM and Administrators, inherited nothing.
+    A file written into ~/.ssh otherwise takes the folder's ACL, and Windows' OpenSSH
+    refuses it if that grants anyone else, even an account deleted long ago
+    ("Bad owner or permissions"). Best effort: -> False if it couldn't."""
+    if not WINDOWS:
+        try:
+            os.chmod(path, 0o600)
+            return True
+        except OSError:
+            return False
+    me = os.environ.get("USERNAME", "")
+    try:  # "desktop\me","S-1-5-21-..."
+        # Bytes: the account name is in the console's code page, the SID is ASCII.
+        out = subprocess.run(["whoami", "/user", "/fo", "csv", "/nh"], capture_output=True,
+                             stdin=subprocess.DEVNULL, timeout=10).stdout
+        sid = out.decode("ascii", "replace").strip().rsplit(",", 1)[-1].strip('"')
+        if sid.startswith("S-1-"):
+            me = "*" + sid
+    except (OSError, subprocess.TimeoutExpired):
+        pass
+    if not me:
+        return False
+    try:
+        return subprocess.run(["icacls", str(path), "/inheritance:r", "/grant:r", f"{me}:F",
+                               "*S-1-5-18:F", "*S-1-5-32-544:F"], capture_output=True,
+                              stdin=subprocess.DEVNULL, timeout=10).returncode == 0
+    except (OSError, subprocess.TimeoutExpired):
+        return False
+
+
 def ssh_hostname(alias):
     """The real host name an ssh alias points at (`ssh -G`), for non-SSH clients like RDP."""
     try:
-        out = subprocess.run(["ssh", "-G", alias], capture_output=True, stdin=subprocess.DEVNULL, text=True, timeout=10).stdout
+        out = run_ssh(["ssh", "-G", alias], capture_output=True, stdin=subprocess.DEVNULL, text=True, timeout=10).stdout
     except (OSError, subprocess.TimeoutExpired):
         return alias
     for line in out.splitlines():
@@ -264,24 +356,65 @@ def open_steam_link():
     return "Steam Link isn't installed; opened its download page"
 
 
+RDP_PORT = 3389
+RDP_USER = "steamos"  # xrdp signs in with the Developer Mode password, not this computer's
+# xrdp's certificate is its own, so every client warns about it first.
+RDP_LOGIN = (f"accept the warning about the Frame's certificate, then sign in as {RDP_USER} "
+             "with your Developer Mode password")
+
+
+def check_rdp(host, timeout=3):
+    """Raise Unreachable, saying why, unless the Frame's RDP port takes a connection."""
+    try:
+        with socket.create_connection((host, RDP_PORT), timeout=timeout):
+            return
+    except ConnectionRefusedError:
+        raise Unreachable(f"The Frame at {host} is on but isn't accepting remote desktop (port {RDP_PORT} "
+                          "refused). Turn on Developer Mode in Steam Settings > System on the headset, "
+                          "then restart it and try again.") from None
+    except socket.gaierror:
+        raise Unreachable(f"Can't find {host} on the network for remote desktop. Check the headset's "
+                          "address on the Devices tab.") from None
+    except OSError as e:
+        raise Unreachable(f"The Frame didn't answer remote desktop at {host} ({e}). It may be asleep, "
+                          "switched off or on another network; if it's on, check Developer Mode is on "
+                          "in Steam Settings > System.") from None
+
+
+def rdp_file(host):
+    """A Remote Desktop connection file for the Frame. mstsc /v: alone offers this
+    computer's Windows account, which xrdp turns away; the file names steamos instead."""
+    if any(c in host for c in "\r\n"):
+        raise HostError("That headset address can't be used for remote desktop")
+    # One file per address, so two launches close together can't swap headsets.
+    path = cache_dir(f"frame-{hashlib.sha256(host.encode()).hexdigest()[:16]}.rdp")
+    path.parent.mkdir(parents=True, exist_ok=True)
+    with open(path, "w", encoding="utf-8", newline="\r\n") as f:  # Path.write_text(newline=) is 3.10+
+        f.write(f"full address:s:{host}\nusername:s:{RDP_USER}\n")
+    return path
+
+
 def open_rdp(alias, host=None):
     """Remote desktop to the Frame's xrdp (user steamos), at `host` or where the alias points."""
     host = host or ssh_hostname(alias)
+    # The client would open either way and then fail on its own, with nothing said here.
+    check_rdp(host)
     if MAC:
         if subprocess.run(["open", "-a", "Windows App"], capture_output=True).returncode == 0:
-            return "Opened Windows App"
+            return f"Opened Windows App: connect to {host} and {RDP_LOGIN}"
         open_url("https://apps.apple.com/app/windows-app/id1295203466")
         return "Windows App isn't installed; opened its App Store page"
     if WINDOWS:
-        _spawn(["mstsc.exe", f"/v:{host}"])
-        return f"Opened Remote Desktop to {host}"
+        _spawn(["mstsc.exe", str(rdp_file(host))])
+        # Windows asks about the unsigned connection file first.
+        return f"Opened Remote Desktop to {host}: choose Connect, {RDP_LOGIN}"
     if which("remmina"):
-        _spawn(["remmina", "-c", f"rdp://steamos@{host}"])
-        return f"Opened Remmina to {host}"
+        _spawn(["remmina", "-c", f"rdp://{RDP_USER}@{host}"])
+        return f"Opened Remmina to {host}: {RDP_LOGIN}"
     for name in ("xfreerdp3", "xfreerdp"):
         if which(name):
-            _spawn([name, f"/v:{host}", "/u:steamos", "/dynamic-resolution"])
-            return f"Opened FreeRDP to {host}"
+            _spawn([name, f"/v:{host}", f"/u:{RDP_USER}", "/dynamic-resolution"])
+            return f"Opened FreeRDP to {host}: {RDP_LOGIN}"
     raise HostError("No RDP client found: install Remmina or FreeRDP")
 
 

ui/frame_link.py

@@ -74,8 +74,8 @@ def ssh_g(alias):
     """(hostname, port, user, proxied) from `ssh -G ALIAS`, for a headset that's only an
     ssh alias. proxied: it goes through ProxyJump or ProxyCommand, so only ssh can reach it."""
     try:
-        out = subprocess.run(["ssh", "-G", alias], capture_output=True, stdin=subprocess.DEVNULL, text=True,
-                             timeout=10).stdout
+        out = frame_host.run_ssh(["ssh", "-G", alias], capture_output=True, stdin=subprocess.DEVNULL, text=True,
+                                 timeout=10).stdout
     except (OSError, subprocess.TimeoutExpired):
         out = ""
     got = {}
@@ -108,7 +108,8 @@ def probe(host, port, timeout=PROBE_TIMEOUT, update=None):
         ip = addr[0]
         if family == socket.AF_INET6 and len(addr) > 3 and addr[3] and "%" not in ip:
             try:  # a link-local IPv6 address only works with its interface
-                ip = f"{ip}%{socket.if_indextoname(addr[3])}"
+                # Windows' ssh takes only the number: its names ("wireless_32768") don't resolve.
+                ip = f"{ip}%{addr[3] if frame_host.WINDOWS else socket.if_indextoname(addr[3])}"
             except (OSError, AttributeError):
                 pass
         left = deadline - now()
@@ -765,8 +766,8 @@ class Link:
         if not self.control:
             return False
         try:
-            return subprocess.run([*self.mux_base, *opts, "-O", "check", alias or self.alias], capture_output=True,
-                                  stdin=subprocess.DEVNULL, timeout=5).returncode == 0
+            return frame_host.run_ssh([*self.mux_base, *opts, "-O", "check", alias or self.alias], capture_output=True,
+                                      stdin=subprocess.DEVNULL, timeout=5).returncode == 0
         except (OSError, subprocess.TimeoutExpired):
             return False
 
@@ -777,8 +778,8 @@ class Link:
             pending.kill()
         if self.control and self.alias:
             try:
-                subprocess.run([*self.mux_base, *self.opts, "-O", "exit", self.alias], capture_output=True,
-                               stdin=subprocess.DEVNULL, timeout=5)
+                frame_host.run_ssh([*self.mux_base, *self.opts, "-O", "exit", self.alias], capture_output=True,
+                                   stdin=subprocess.DEVNULL, timeout=5)
             except (OSError, subprocess.TimeoutExpired):
                 pass
         if proc and proc.poll() is None:
@@ -983,8 +984,8 @@ class Link:
                     *self.host_opts(device, ssh_target(a["host"], res.get("ip"))),
                     "-o", "StrictHostKeyChecking=yes", device["alias"], "true"]
             try:
-                r = subprocess.run(argv, capture_output=True, stdin=subprocess.DEVNULL, text=True,
-                                   errors="replace", timeout=20)
+                r = frame_host.run_ssh(argv, capture_output=True, stdin=subprocess.DEVNULL, text=True,
+                                       errors="replace", timeout=20)
                 err = r.stderr.strip()
                 if r.returncode == 0:
                     rows[i].update(ssh="ok", detail=f"{lead} · SSH works")

ui/frame_report.py

@@ -6,6 +6,10 @@ project as a `problem_report` event: only the maintainer can read it, and
 nothing is published. It is sent whatever the analytics settings are, because
 the person sends it deliberately. Diagnostics are scrubbed first
 (frame_telemetry.scrub); the person's own words are sent as written.
+
+An email address goes with a report only when the person ticks "may contact me with
+follow-up questions" (contact_followup). Standing choices made in Settings are
+frame_contact.py's `contact_consent` events; `contacts` lists them.
 """
 import os
 import platform
@@ -13,6 +17,7 @@ import sys
 import time
 import uuid
 
+import frame_contact
 import frame_host
 import frame_telemetry
 
@@ -107,19 +112,26 @@ def send(body):
     """Send the report to PostHog. Returns {"id", "message"}; raises ReportError."""
     kind = body.get('kind') if body.get('kind') in KINDS else 'bug'
     title, text, diag = compose(body)
+    followup = bool(body.get('contactFollowup'))
+    contact = str(body.get('contact') or '').strip() if followup else ''
+    if followup and not frame_contact.valid_email(contact):
+        raise ValueError('add your email address for follow-up questions, or untick that box')
     ref = uuid.uuid4().hex[:8].upper()
     props = {**frame_telemetry.common(), 'kind': kind, 'title': title, 'message': text,
-             'contact': str(body.get('contact') or '').strip()[:120], 'diagnostics': diag,
+             'contact': contact, 'contact_followup': followup, 'diagnostics': diag,
              'report_id': ref, 'steamos': str(frame.get('build') or '')[:120], 'level': 'report'}
     # Its own random id: a report can carry contact details, so it isn't linked to this copy's analytics.
     event = {'event': 'problem_report', 'distinct_id': str(uuid.uuid4()), 'uuid': str(uuid.uuid4()),
              'timestamp': time.strftime('%Y-%m-%dT%H:%M:%SZ', time.gmtime()), 'properties': props}
+    started = time.time()
     try:
         frame_telemetry.post([event], timeout=30)
     except frame_telemetry.SendError as e:
         raise ReportError(str(e))
     try:
-        frame_telemetry.record_sent([event])
+        with frame_telemetry._lock:  # the lock a removal holds while wiping its address
+            frame_contact.redact_removed(event, started)
+            frame_telemetry.record_sent([event])
     except OSError:
         pass  # it was sent; failing to log it here mustn't make the person send it again
     return {'id': ref, 'message': f'Sent privately to the Frame Control developer (report {ref}).'}
@@ -135,22 +147,71 @@ def inbox(days=30):
     import frame_compat_db
     res = frame_compat_db._posthog_query(
         "SELECT timestamp, properties.report_id, properties.kind, properties.title, properties.message, "
-        "properties.contact, properties.app_version, properties.os, properties.steamos, properties.diagnostics "
+        "properties.contact, properties.app_version, properties.os, properties.steamos, properties.diagnostics, "
+        "properties.contact_followup "
         f"FROM events WHERE event = 'problem_report' AND timestamp > now() - INTERVAL {int(days)} DAY "
         "ORDER BY timestamp DESC LIMIT 200")
     return res.get('results') or []
 
 
+def _yes(v):
+    return v is True or str(v).lower() in ('true', '1')
+
+
+def contacts():
+    """{'updates': [(email, since)], 'followup': [...]}: the addresses whose newest
+    contact_consent event agrees to each, oldest first. A withdrawal, or a change to another
+    address, replaces what came before, so withdrawn addresses are never listed. "Newest" is
+    the highest rev from that copy (then time), so every field comes from the same event
+    whatever order they arrived in or what the clocks said."""
+    import frame_compat_db
+    newest = "tuple(ifNull(toInt(properties.rev), 0), timestamp)"
+    res = frame_compat_db._posthog_query(
+        f"SELECT distinct_id, argMax(properties.email, {newest}), argMax(properties.updates, {newest}), "
+        f"argMax(properties.followup, {newest}), argMax(timestamp, {newest}) FROM events "
+        "WHERE event = 'contact_consent' GROUP BY distinct_id ORDER BY max(timestamp) LIMIT 100000")
+    out = {'updates': [], 'followup': []}
+    for row in res.get('results') or []:
+        if not isinstance(row, list) or len(row) != 5:
+            continue
+        _, email, updates, followup, ts = row
+        email = str(email or '').strip()
+        if not frame_contact.valid_email(email):
+            continue
+        for kind, agreed in (('updates', updates), ('followup', followup)):
+            if _yes(agreed):
+                out[kind].append((email, str(ts or '')[:10]))
+    return out
+
+
+USAGE = 'usage: frame_report.py inbox [days] | contacts [updates|followup]'
+
+
 def main():
     cmd, *args = sys.argv[1:] or ['inbox']
+    if cmd == 'contacts':
+        kinds = args[:1] or ['updates', 'followup']
+        if not set(kinds) <= {'updates', 'followup'}:
+            sys.exit(USAGE)
+        found = contacts()
+        for kind in kinds:
+            print(f"== {'Release and update notices' if kind == 'updates' else 'Follow-up questions'}"
+                  f" ({len(found[kind])})")
+            for email, since in found[kind]:
+                print(f"   {email}  (since {since})")
+            print()
+        return
     if cmd != 'inbox':
-        sys.exit('usage: frame_report.py inbox [days]')
+        sys.exit(USAGE)
     for row in inbox(*(args[:1] or [30])):
-        if not isinstance(row, list) or len(row) != 10:
+        if not isinstance(row, list) or len(row) != 11:
             continue
-        ts, ref, kind, title, text, contact, version, osname, steamos, diag = (str(v or '') for v in row)
+        ts, ref, kind, title, text, contact, version, osname, steamos, diag = (str(v or '') for v in row[:10])
+        # Reports from before contact_followup existed only carried an address given for a reply.
+        reply = contact and (row[10] is None or _yes(row[10]))
         print(f"== {ts[:16].replace('T', ' ')}  {ref}  [{kind}] {title}")
-        print(f"   {version} on {osname}, SteamOS {steamos or 'unknown'}{', reply to ' + contact if contact else ''}")
+        print(f"   {version} on {osname}, SteamOS {steamos or 'unknown'}"
+              f"{', may follow up at ' + contact if reply else ''}")
         print('   ' + text.replace('\n', '\n   '))
         if diag:
             print('   --- diagnostics\n   ' + diag.replace('\n', '\n   '))

ui/index.html

@@ -175,7 +175,7 @@
   .seg { display: inline-flex; background: rgba(0,0,0,.3); border-radius: 3px; padding: 2px; }
   .seg button { background: transparent; height: 28px; font-size: 12.5px; letter-spacing: .6px; text-transform: uppercase; }
   .seg button.on { background: var(--btn-hi); color: var(--bright); }
-  input[type=text], input[type=search], input[type=url], input[type=password], textarea { width: 100%; background: rgba(0,0,0,.28); color: var(--text); border: 1px solid transparent;
+  input[type=text], input[type=search], input[type=url], input[type=password], input[type=email], textarea { width: 100%; background: rgba(0,0,0,.28); color: var(--text); border: 1px solid transparent;
                                border-radius: 3px; padding: 9px 11px; font: inherit; }
   textarea { resize: vertical; min-height: 76px; }
   input:focus, textarea:focus { outline: none; border-color: var(--blue); background: rgba(0,0,0,.4); }
@@ -258,7 +258,12 @@
   .shot-card .row { flex-wrap: nowrap; }
   .shot-card .grow { flex: 1; min-width: 0; }
   .shot-card .t { color: var(--bright); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
-  .shot-card .s { color: var(--muted); font-size: 12px; }
+  .shot-card .s { color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+  .ctx-menu { position: fixed; z-index: 1000; min-width: 200px; padding: 4px; border-radius: 4px; background: #232c38;
+              box-shadow: 0 10px 28px rgba(0,0,0,.6), 0 0 0 1px rgba(255,255,255,.08); }
+  .ctx-menu button { display: block; width: 100%; height: 30px; padding: 0 10px; text-align: left; background: none; }
+  .ctx-menu button:hover, .ctx-menu button:focus-visible { background: var(--blue); color: #fff; outline: none; }
+  .ctx-menu hr { border: 0; border-top: 1px solid rgba(255,255,255,.1); margin: 4px 2px; }
 
   /* ---- library shelf (portrait capsules, like Steam's library home) ---- */
   .shelf { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 16px; }
@@ -296,6 +301,11 @@
             background: rgba(26,159,255,.12); border-left: 3px solid var(--blue); font-size: 13.5px; line-height: 1.5; }
   .notice .grow { flex: 1; min-width: 260px; }
   .notice .progress { width: 160px; margin-top: 0; display: block; }
+  .contact-opts { display: flex; gap: 6px 18px; flex-wrap: wrap; margin-top: 8px; }
+  .contact-opts label { display: inline-flex; gap: 7px; align-items: center; cursor: pointer; }
+  .contact-opts input { width: 15px; height: 15px; margin: 0; accent-color: var(--blue); }
+  #contactNotice input[type=email] { width: min(320px, 100%); margin-top: 8px; padding: 7px 10px; }
+  #cEmail { max-width: 420px; }
   .popt { display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; align-items: start; margin: 0 0 14px; cursor: pointer; }
   .popt input { margin: 3px 0 0; width: 16px; height: 16px; accent-color: var(--blue); }
   .popt b { font-weight: 600; color: var(--text); }
@@ -674,6 +684,17 @@
     <button class="small" id="noticeMore" title="Also share compatibility results and error details (you can turn either off later)">Share more to help fix problems</button>
     <button class="action small" id="noticeOk">OK</button>
   </div>
+  <form class="notice" id="contactNotice" hidden>
+    <div class="grow"><b>Leave an email address?</b> Optional: Frame Control works the same either way, and
+      you can change or remove it any time in Privacy &amp; updates.
+      <div><input type="email" id="cpEmail" maxlength="254" placeholder="you@example.com" aria-label="Email address" required></div>
+      <div class="contact-opts">
+        <label><input type="checkbox" id="cpUpdates"> Email me about Frame Control updates</label>
+        <label><input type="checkbox" id="cpFollowup"> The maintainer may contact me with follow-up questions</label></div></div>
+    <span class="sub" id="cpMsg" role="status"></span>
+    <button type="button" class="small" id="cpNo">No thanks</button>
+    <button type="submit" class="action small" id="cpSave">Save</button>
+  </form>
   <div class="banner" id="offline" role="alert" hidden>
     <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" aria-hidden="true"><path d="M2 8.5a15 15 0 0 1 20 0M5.5 12a10 10 0 0 1 13 0M9 15.5a5 5 0 0 1 6 0"/><circle cx="12" cy="19" r="1.2" fill="currentColor"/><path d="M3 3l18 18"/></svg>
     <div class="grow"><div class="t" id="offMsg">Can't reach the Frame</div>
@@ -701,6 +722,7 @@
           <button class="action" id="shotBtn">Capture</button>
           <button id="liveBtn" title="Keep updating, as video">Live</button>
           <button id="ctrlBtn" title="Control the Frame by tapping or clicking on the view (C)">Control</button>
+          <button id="copyBtn" disabled title="Copy the image to the clipboard (or right-click it)">Copy</button>
           <button id="saveBtn" disabled>Save</button>
         </span>
       </div>
@@ -867,7 +889,7 @@
       <button class="action small" id="shotsSaveNew" disabled>Save new to this computer</button>
     </div>
     <div class="shot-grid" id="shotGrid"><div class="sub">Loading…</div></div>
-    <div class="hint">Screenshots you take in the headset with Steam's screenshot shortcut. Click one to open it in the viewer; Save copies it to <code>~/Pictures/SteamFrame</code>.</div>
+    <div class="hint">Screenshots you take in the headset with Steam's screenshot shortcut. New ones appear on their own. Click one to open it in the viewer, Copy puts it on the clipboard, and Save copies it to <code>~/Pictures/SteamFrame</code>. Right-click for more.</div>
   </section>
   </div>
 
@@ -1127,6 +1149,17 @@
         <span class="sub">Error messages and where in Frame Control they happened, with your home
           folder, user name, addresses and keys removed.</span></label>
       <div class="hint" id="tStatus"></div>
+      <h3 style="margin-top:22px">Contact email (optional)</h3>
+      <form id="contactForm">
+        <input type="email" id="cEmail" maxlength="254" placeholder="you@example.com" aria-label="Email address">
+        <div class="contact-opts">
+          <label><input type="checkbox" id="cUpdates"> Email me about Frame Control updates</label>
+          <label><input type="checkbox" id="cFollowup"> The maintainer may contact me with follow-up questions</label></div>
+        <div class="row" style="margin-top:10px"><button type="submit" class="small action" id="cSave">Save</button>
+          <button type="button" class="small" id="cRemove">Remove my email</button></div>
+      </form>
+      <div class="hint" id="cStatus">Sent privately to the Frame Control maintainer, never shared or published.
+        Updates are occasional release notices; follow-up questions are mainly about problem reports you send.</div>
       <details id="tSentBox"><summary>Show what's been sent</summary><div class="sentlog" id="tSent"></div></details>
       <div class="row" style="margin-top:14px"><button class="small action" data-report>Report a problem</button>
         <button class="small" id="updateCheck" hidden>Check for updates</button>
@@ -1234,7 +1267,9 @@
       placeholder="e.g. Installing an APK stops at 'copying to the Frame'"></label>
     <label class="field">What happened?<textarea id="bugText" maxlength="5000" required minlength="10"
       placeholder="What you did, what happened, and what you expected."></textarea></label>
-    <label class="field">How can we reach you? (optional, for a reply)<input type="text" id="bugContact" maxlength="120" placeholder="Email, GitHub or Discord name"></label>
+    <label class="popt"><input type="checkbox" id="bugFollowup"><b>The maintainer may contact me with follow-up questions</b>
+      <span class="sub">Optional. Your email address goes with this report only when this is ticked.</span></label>
+    <label class="field">Your email address<input type="email" id="bugContact" maxlength="254" placeholder="you@example.com" disabled></label>
     <label class="popt"><input type="checkbox" id="bugDiag" checked><b>Include diagnostics</b>
       <span class="sub">Frame Control's version, your OS and the Frame's SteamOS build.</span></label>
     <label class="popt"><input type="checkbox" id="bugLogs"><b>Also include recent activity and the server log</b>
@@ -1869,7 +1904,7 @@ async function capture() {
     if (source === "panel") $("srcBadge").textContent = `Desktop · ${shotPanel?.name || "panel"}`;
     ctrlShow();
     $("stamp").hidden = false; $("stamp").textContent = new Date().toLocaleTimeString();
-    $("saveBtn").disabled = false;
+    $("saveBtn").disabled = $("copyBtn").disabled = false;
     return true;
   } catch (e) {
     log("Capture failed: " + e.message, "e");
@@ -1951,7 +1986,7 @@ async function startVideo() {
         $("viewer").classList.remove("busy");
         c.hidden = false; $("viewerEmpty").hidden = true; $("zoombar").hidden = false; $("asleep").hidden = true;
         $("srcBadge").hidden = false; $("srcBadge").textContent = `${video.label} · video`;
-        $("stamp").hidden = false; $("saveBtn").disabled = false;
+        $("stamp").hidden = false; $("saveBtn").disabled = $("copyBtn").disabled = false;
       }
       frames++;
       const now = performance.now();
@@ -2020,6 +2055,35 @@ $("saveBtn").onclick = () => lastShot ? download(lastShot.blob, lastShot.file) :
   if (!b) return toast("Couldn't encode the image", true);
   download(b, `frame-${view}-${new Date().toISOString().replace(/[:.]/g, "-")}.png`);
 }, "image/png");
+const copyViewer = () => act("Copy image", () => copyImage(lastShot ? lastShot.blob
+  : new Promise((ok, bad) => $("canvas").toBlob(b => b ? ok(b) : bad(new Error("couldn't encode the image")), "image/png"))));
+$("copyBtn").onclick = copyViewer;
+// Right-click the viewer to copy or save what it shows (in Control, a right-click goes to the Frame).
+$("canvas").oncontextmenu = e => {
+  if (ctrl.on || $("saveBtn").disabled) return;
+  e.preventDefault();
+  showMenu(e, [["Copy image", copyViewer], ["Save image", () => $("saveBtn").click()]]);
+};
+// An image onto the clipboard. The app does it natively (JPEG too); a browser
+// takes PNG only, and the blob is handed over as a promise so the click still counts.
+async function copyImage(blob) {
+  if (window.frameApp?.writeImage) {
+    if (!await window.frameApp.writeImage(new Uint8Array(await (await blob).arrayBuffer()))) throw new Error("the app refused the image");
+    return { message: "Copied the image" };
+  }
+  if (!navigator.clipboard?.write || !window.ClipboardItem) throw new Error("This browser can't copy images here");
+  await navigator.clipboard.write([new ClipboardItem({ "image/png": Promise.resolve(blob).then(pngBlob) })]);
+  return { message: "Copied the image" };
+}
+async function pngBlob(blob) {
+  if (blob.type === "image/png") return blob;
+  const bmp = await createImageBitmap(blob);
+  const c = document.createElement("canvas");
+  c.width = bmp.width; c.height = bmp.height;
+  c.getContext("2d").drawImage(bmp, 0, 0);
+  bmp.close();
+  return new Promise((ok, bad) => c.toBlob(b => b ? ok(b) : bad(new Error("couldn't encode the image")), "image/png"));
+}
 function download(blob, name) {
   if (savesToDevice()) return act("Save image", () => saveToDevice([{ blob, name }]));
   const a = document.createElement("a");
@@ -3497,8 +3561,11 @@ loadReports();
 api("/api/host").then(applyHostWording).catch(() => {});
 
 // ---- Steam screenshots from the headset ----
-const shots = { list: [], urls: [] };
+// thumbs: id -> promise of an object URL, kept across reloads so a refresh
+// that finds a new shot fetches only that one's thumbnail.
+const shots = { list: [], sig: null, thumbs: new Map(), loading: null, gen: 0, fill: 0 };
 const STEAMVR_APPID = "250820";
+const SHOTS_POLL_MS = 8000;
 function shotApp(appid) {
   if (appid === STEAMVR_APPID) return "SteamVR";
   const g = state?.games?.find(x => x.appid === appid);
@@ -3510,35 +3577,85 @@ async function shotBlob(id, thumb) {
   if (!r.ok) throw new Error((await r.json().catch(() => ({}))).error || `HTTP ${r.status}`);
   return r.blob();
 }
-async function loadShots() {
-  $("shotsRefresh").disabled = true;
+function shotThumb(id) {
+  const thumbs = shots.thumbs;  // this headset's: a late failure must not touch the next one's
+  if (!thumbs.has(id)) {
+    const p = shotBlob(id, true).then(b => URL.createObjectURL(b));
+    p.catch(() => { if (thumbs.get(id) === p) thumbs.delete(id); });  // try again next time
+    thumbs.set(id, p);
+  }
+  return thumbs.get(id);
+}
+// quiet: a background check. It keeps what's shown if the Frame can't be read,
+// and redraws only when the shots (or whether they're saved here) changed.
+function loadShots(quiet) {
+  if (shots.loading) {
+    // A check already on its way will do for another check; Refresh, or a save
+    // that just finished, reads again after it so the answer is a fresh one.
+    const again = () => loadShots();
+    return quiet === true ? shots.loading : shots.loading.then(again, again);
+  }
+  const p = readShots(quiet === true).finally(() => { if (shots.loading === p) shots.loading = null; });
+  return shots.loading = p;
+}
+// Forget the shots of a headset we've switched away from, and ignore its answers still on their way.
+function resetShots() {
+  closeMenu();  // its items were about the other headset's shot
+  shots.gen++; shots.fill++; shots.loading = null; shots.list = []; shots.sig = null;
+  for (const p of shots.thumbs.values()) p.then(URL.revokeObjectURL, () => {});
+  shots.thumbs = new Map();
+}
+async function readShots(quiet) {
+  const gen = shots.gen;
+  if (!quiet) $("shotsRefresh").disabled = true;
+  let got;
   try {
-    shots.list = (await api("/api/shots")).shots;
+    got = await api("/api/shots");
   } catch (e) {
-    return failed($("shotGrid"), e);
+    if (!quiet && gen === shots.gen) { shots.sig = null; failed($("shotGrid"), e); }
+    return;
   } finally { $("shotsRefresh").disabled = false; }
-  shots.urls.forEach(URL.revokeObjectURL); shots.urls = [];
+  if (gen !== shots.gen) return;
+  ({ shots: shots.list, folder: shots.folder } = got);
+  const sig = JSON.stringify(shots.list.map(s => [s.id, s.saved, shotApp(s.appid)]));
+  if (sig !== shots.sig) { shots.sig = sig; drawShots(); }
+  fillThumbs(quiet);  // not waited for: the next check, or a save, needn't sit behind the thumbnails
+}
+// Thumbnails one at a time over the shared SSH connection. One that failed is
+// tried again on Refresh, not by every background check.
+async function fillThumbs(quiet) {
+  const run = ++shots.fill;
+  // Refresh puts every failed one back in line first, so a background pass that takes over carries them all on.
+  if (!quiet) for (const img of document.querySelectorAll("#shotGrid img[data-failed]")) delete img.dataset.failed;
+  for (const img of document.querySelectorAll("#shotGrid img[data-shot]:not([src])" + (quiet ? ":not([data-failed])" : ""))) {
+    const s = shots.list[+img.dataset.shot];
+    let url;
+    try { url = await shotThumb(s.id); } catch (e) { img.alt = "Preview failed"; img.dataset.failed = 1; }
+    if (run !== shots.fill) return;  // a newer pass (after a check, a redraw or another headset) has taken over
+    if (url) img.src = url;
+  }
+}
+// "Sep 28, 10:37 PM": short enough to sit beside the card's buttons (the full date is its tooltip).
+function shotTime(t) {
+  return new Date(t * 1000).toLocaleString([], { month: "short", day: "numeric", hour: "numeric", minute: "2-digit" });
+}
+function drawShots() {
+  const ids = new Set(shots.list.map(s => s.id));
+  for (const [id, p] of shots.thumbs) {
+    if (!ids.has(id)) { shots.thumbs.delete(id); p.then(URL.revokeObjectURL, () => {}); }
+  }
   const unsaved = shots.list.filter(s => !s.saved).length;
   $("shotCount").textContent = shots.list.length ? `${shots.list.length} on the Frame` + (unsaved && !HOST.mobile ? ` · ${unsaved} not on this ${HOST.computer}` : "") : "";
   $("shotsSaveNew").disabled = HOST.mobile ? !shots.list.length : !unsaved;
-  $("shotGrid").innerHTML = shots.list.length ? shots.list.map((s, i) => `<div class="shot-card">
-      <img class="thumb" data-shot="${i}" alt="Screenshot from ${esc(shotApp(s.appid))}" title="Open in the viewer">
+  $("shotGrid").innerHTML = shots.list.length ? shots.list.map((s, i) => `<div class="shot-card" data-card="${i}">
+      <img class="thumb" data-shot="${i}" alt="Screenshot from ${esc(shotApp(s.appid))}" title="Open in the viewer (right-click for more)">
       <div class="row"><div class="grow">
           <div class="t">${esc(shotApp(s.appid))}</div>
-          <div class="s">${esc(new Date(s.time * 1000).toLocaleString())}</div></div>
+          <div class="s" title="${esc(new Date(s.time * 1000).toLocaleString())}">${esc(shotTime(s.time))}</div></div>
+        <button class="small" data-shot-copy="${i}" title="Copy the image to the clipboard">Copy</button>
         ${s.saved && !HOST.mobile ? `<span class="tag">On ${HOST.computer}</span>` : `<button class="small" data-shot-save="${i}">Save</button>`}
       </div></div>`).join("")
     : `<div class="sub">No screenshots on the Frame yet.</div>`;
-  // Thumbnails one at a time over the shared SSH connection.
-  for (const img of document.querySelectorAll("#shotGrid img[data-shot]")) {
-    const s = shots.list[+img.dataset.shot];
-    try {
-      const url = URL.createObjectURL(await shotBlob(s.id, true));
-      shots.urls.push(url);
-      img.src = url;
-    } catch (e) { img.alt = "Preview failed"; }
-    if (!img.isConnected) return;  // the list was reloaded meanwhile
-  }
 }
 async function openShot(s) {
   if (live) toggleLive(false);
@@ -3556,7 +3673,7 @@ async function openShot(s) {
     draw();
     $("srcBadge").textContent = `Screenshot · ${shotApp(s.appid)}`;
     $("stamp").hidden = false; $("stamp").textContent = new Date(s.time * 1000).toLocaleString();
-    $("saveBtn").disabled = false;
+    $("saveBtn").disabled = $("copyBtn").disabled = false;
     $("view").scrollIntoView({ behavior: "smooth" });
   } catch (e) {
     toast("Couldn't open the screenshot: " + e.message, true);
@@ -3575,15 +3692,95 @@ async function saveShots(list, btn) {
                         () => api("/api/shots/save", { ids: list.map(s => s.id) }), btn);
   if (res) loadShots();
 }
+const copyShot = (s, btn) => act("Copy screenshot", () => copyImage(shotBlob(s.id, false)), btn);
 $("shotGrid").onclick = e => {
   const img = e.target.closest("img[data-shot]");
   if (img) return openShot(shots.list[+img.dataset.shot]);
+  const c = e.target.closest("[data-shot-copy]");
+  if (c) return copyShot(shots.list[+c.dataset.shotCopy], c);
   const b = e.target.closest("[data-shot-save]");
   if (b) saveShots([shots.list[+b.dataset.shotSave]], b);
 };
-$("shotsRefresh").onclick = loadShots;
+// A small right-click menu. items: [label, fn] pairs, null for a divider.
+// back: the keyboard closed it, so focus returns to where it was.
+function closeMenu(back) {
+  const menu = document.querySelector(".ctx-menu");
+  if (!menu) return;
+  menu.remove();
+  if (back === true && menu.opener?.isConnected) menu.opener.focus();
+}
+function showMenu(e, items) {
+  closeMenu();
+  const menu = document.createElement("div");
+  menu.className = "ctx-menu";
+  menu.setAttribute("role", "menu");
+  menu.opener = document.activeElement;
+  for (const it of items) {
+    if (!it) { menu.append(document.createElement("hr")); continue; }
+    const b = document.createElement("button");
+    b.textContent = it[0];
+    b.setAttribute("role", "menuitem");
+    b.onclick = () => { closeMenu(); it[1](); };
+    menu.append(b);
+  }
+  (document.fullscreenElement || document.body).append(menu);  // in front of a fullscreen viewer
+  const r = menu.getBoundingClientRect();
+  menu.style.left = Math.max(4, Math.min(e.clientX, innerWidth - r.width - 4)) + "px";
+  menu.style.top = Math.max(4, Math.min(e.clientY, innerHeight - r.height - 4)) + "px";
+  menu.querySelector("button").focus();
+}
+document.addEventListener("pointerdown", e => { if (!e.target.closest(".ctx-menu")) closeMenu(); }, true);
+document.addEventListener("keydown", e => {
+  const menu = document.querySelector(".ctx-menu");
+  if (!menu) return;
+  if (e.key === "Escape" || e.key === "Tab") { e.preventDefault(); return closeMenu(true); }  // Tab doesn't wander off behind it
+  if (e.key !== "ArrowDown" && e.key !== "ArrowUp") return;
+  e.preventDefault();  // arrows move through the menu, not the page
+  const items = [...menu.querySelectorAll("button")];
+  const at = items.indexOf(document.activeElement), step = e.key === "ArrowDown" ? 1 : -1;
+  items[at < 0 ? (step > 0 ? 0 : items.length - 1) : (at + step + items.length) % items.length].focus();
+});
+addEventListener("blur", closeMenu);
+document.addEventListener("fullscreenchange", closeMenu);
+addEventListener("scroll", closeMenu, true);
+// Right-click a screenshot for everything it can do.
+$("shotGrid").oncontextmenu = e => {
+  const card = e.target.closest("[data-card]");
+  if (!card) return;
+  e.preventDefault();
+  const s = shots.list[+card.dataset.card];
+  const items = [
+    ["Open in viewer", () => openShot(s)],
+    ["Copy image", () => copyShot(s)],
+  ];
+  if (!s.saved || HOST.mobile) items.push(null, [`Save to ${HOST.computer}`, () => saveShots([s])]);
+  else {
+    const sep = shots.folder.includes("\\") ? "\\" : "/";
+    items.push(null);
+    items.push([`Show in ${!HOST.fileManager || HOST.fileManager === "your file manager" ? "folder" : HOST.fileManager}`,
+                () => act("Show screenshot", () => api("/api/open", { what: "shot", id: s.id }))]);
+    items.push(["Copy file path", () => act("Copy file path", async () => {
+      await copyText(shots.folder + sep + s.file);
+      return { message: "Copied the file path" };
+    })]);
+  }
+  items.push(null, ["Copy file name", () => act("Copy file name", async () => {
+    await copyText(s.file);
+    return { message: "Copied " + s.file };
+  })]);
+  showMenu(e, items);
+};
+function copyText(text) {
+  if (!navigator.clipboard?.writeText) throw new Error("This browser can't copy here");
+  return navigator.clipboard.writeText(text);
+}
+$("shotsRefresh").onclick = () => loadShots();
 $("shotsSaveNew").onclick = e => saveShots(shots.list.filter(s => !s.saved), e.currentTarget);
 $("shotsFolder").onclick = e => act($("shotsFolder").textContent, () => api("/api/open", { what: "shots" }), e.currentTarget);
+// Watch for new shots: a cheap listing over the shared SSH connection while the
+// window is visible and the Frame is reachable, and again on coming back to it.
+setInterval(() => { if (!document.hidden && online) loadShots(true); }, SHOTS_POLL_MS);
+document.addEventListener("visibilitychange", () => { if (!document.hidden && online) loadShots(true); });
 
 // ---- Panel switcher: our UI over SteamVR's panel API ----
 let panelSeq = 0;
@@ -3964,7 +4161,68 @@ $("noticeMore").onclick = async () => {
   toast("Thanks! Compatibility results and error details will be shared too. Change it any time in Privacy.");
 };
 $("noticeSettings").onclick = () => { $("privacyNotice").hidden = true; location.hash = "#privacy"; };
-loadTelemetry();
+const telemetryLoaded = loadTelemetry();
+
+// ---- contact email: two separate opt-ins (ui/frame_contact.py, docs/privacy.md) ----
+const contact = { email: "", updates: false, followup: false };
+function renderContact(s) {
+  Object.assign(contact, s);
+  $("cEmail").value = s.email; $("cUpdates").checked = s.updates; $("cFollowup").checked = s.followup;
+  $("cRemove").hidden = !s.email;
+  $("cStatus").textContent = s.waiting ? "Saved here; it's sent to the maintainer when Frame Control can reach PostHog."
+    : s.email ? `Saved. ${s.email} may get ${[s.updates && "update notices", s.followup && "follow-up questions"].filter(Boolean).join(" and ")}. Remove it any time.`
+    : "Sent privately to the Frame Control maintainer, never shared or published. Updates are occasional release notices; follow-up questions are mainly about problem reports you send.";
+}
+async function saveContact(change) {
+  const s = await api("/api/contact", change);
+  renderContact(s);
+  return s;
+}
+async function loadContact() {
+  await telemetryLoaded;
+  try { renderContact(await api("/api/contact")); } catch { return; }
+  checkContactPrompt();
+}
+// One time only, only once the Frame has connected, and never on top of the privacy notice or
+// straight after it (two asks in a row is nagging): checked at load and whenever the Frame connects.
+async function checkContactPrompt() {
+  if (!$("contactNotice").hidden || !$("privacyNotice").hidden) return;
+  let s;
+  try { s = await api("/api/contact"); } catch { return; }
+  if (!s.showPrompt || !$("contactNotice").hidden || !$("privacyNotice").hidden) return;
+  $("contactNotice").hidden = false;
+  api("/api/contact/prompt", { prompt: "shown" }).catch(() => {});
+}
+$("contactNotice").onsubmit = async e => {
+  e.preventDefault();
+  if (!$("cpUpdates").checked && !$("cpFollowup").checked) { $("cpMsg").textContent = "Tick at least one, or choose No thanks."; return; }
+  $("cpSave").disabled = true;
+  try {
+    await saveContact({ email: $("cpEmail").value, updates: $("cpUpdates").checked, followup: $("cpFollowup").checked, fromPrompt: true });
+    $("contactNotice").hidden = true;
+    toast("Thanks! Change or remove it any time in Privacy & updates.");
+  } catch (err) { $("cpMsg").textContent = `Couldn't save: ${err.message}`; }
+  finally { $("cpSave").disabled = false; }
+};
+$("cpNo").onclick = async () => {
+  try { await api("/api/contact/prompt", { prompt: "dismissed" }); $("contactNotice").hidden = true; }
+  catch (err) { $("cpMsg").textContent = `Couldn't save that: ${err.message}. Try again.`; }
+};
+$("contactForm").onsubmit = async e => {
+  e.preventDefault();
+  const email = $("cEmail").value.trim();
+  if (email && !$("cUpdates").checked && !$("cFollowup").checked) {
+    $("cStatus").textContent = "Tick what your email may be used for, or use Remove my email."; return;
+  }
+  try { await saveContact({ email, updates: $("cUpdates").checked, followup: $("cFollowup").checked });
+        toast(email ? "Contact email saved." : "Contact email removed."); }
+  catch (err) { toast(`Couldn't save: ${err.message}`, true); }
+};
+$("cRemove").onclick = async () => {
+  try { await saveContact({ email: "", updates: false, followup: false }); toast("Contact email removed. Neither choice applies any more."); }
+  catch (err) { toast(`Couldn't remove it: ${err.message}`, true); }
+};
+loadContact();
 function pageEvent(event, properties) {
   if (telemetry.usage && !telemetry.blocked) api("/api/telemetry/event", { event, properties }).catch(() => {});
 }
@@ -3979,8 +4237,8 @@ document.querySelectorAll("nav a").forEach(a => a.addEventListener("click", () =
 const bug = { preview: "" };
 const activityLines = () => [...$("log").children].slice(0, 25).map(el => el.textContent.trim());
 function bugReportText() {
-  const contact = $("bugContact").value.trim();
-  const body = `Kind: ${$("bugKind").value}${contact ? `\nContact: ${contact}` : ""}\n\n${$("bugText").value.trim()}${bug.preview ? "\n\n---\nDiagnostics:\n```\n" + bug.preview + "\n```" : ""}`;
+  const email = $("bugFollowup").checked ? $("bugContact").value.trim() : "";
+  const body = `Kind: ${$("bugKind").value}${email ? `\nFollow-up questions welcome: ${email}` : ""}\n\n${$("bugText").value.trim()}${bug.preview ? "\n\n---\nDiagnostics:\n```\n" + bug.preview + "\n```" : ""}`;
   return { title: $("bugTitleIn").value.trim(), body };
 }
 // The preview is a snapshot: exactly this text is sent, even if more activity happens meanwhile.
@@ -3996,12 +4254,20 @@ function openBugReport() {
   $("bugMsg").textContent = ""; $("bugSend").disabled = false;
   $("bugCancel").textContent = "Cancel";
   $("bugDiagBox").open = false; $("bugLogs").disabled = false;
+  // A standing yes to follow-up questions (Privacy & updates) fills this in; it can be unticked.
+  $("bugFollowup").checked = contact.followup; $("bugContact").value = contact.followup ? contact.email : "";
+  $("bugContact").disabled = !contact.followup; $("bugContact").required = contact.followup;
   $("bugDlg").showModal();
   loadBugPreview();
 }
 document.body.addEventListener("click", e => { if (e.target.closest("[data-report]")) openBugReport(); });
 $("bugDiag").onchange = () => { $("bugLogs").disabled = !$("bugDiag").checked; loadBugPreview(); };
 $("bugLogs").onchange = loadBugPreview;
+$("bugFollowup").onchange = () => {
+  const on = $("bugFollowup").checked;
+  $("bugContact").disabled = !on; $("bugContact").required = on;
+  if (on && !$("bugContact").value) { $("bugContact").value = contact.email; $("bugContact").focus(); }
+};
 $("bugCancel").onclick = () => $("bugDlg").close();
 $("bugCopy").onclick = async () => {
   const { title, body } = bugReportText();
@@ -4015,7 +4281,8 @@ $("bugForm").onsubmit = async e => {
   try {
     const res = await api("/api/report", {
       kind: $("bugKind").value, title: $("bugTitleIn").value, message: $("bugText").value,
-      contact: $("bugContact").value, diagnostics: $("bugDiag").checked ? bug.preview : "" });
+      contactFollowup: $("bugFollowup").checked, contact: $("bugFollowup").checked ? $("bugContact").value : "",
+      diagnostics: $("bugDiag").checked ? bug.preview : "" });
     $("bugMsg").textContent = `Sent, thank you. Your reference is ${res.id}.`;
     $("bugCancel").textContent = "Close";
     log(res.message, "ok");
@@ -4177,7 +4444,7 @@ if (window.frameApp && window.frameApp.onInstallLink) {
 }
 
 setView("headset");
-refresh().then(loadShots);  // after status, so app names resolve
+refresh().then(() => loadShots());  // after status, so app names resolve
 document.addEventListener("visibilitychange", () => { if (!document.hidden && online === false) refresh(); });
 </script>
 <script>
@@ -4298,7 +4565,7 @@ function onConnection(s) {
     lastImg = null; lastShot = null;
     $("canvas").hidden = true; $("viewerEmpty").hidden = false; $("zoombar").hidden = true;
     ["stamp", "srcBadge", "asleep"].forEach(id => $(id).hidden = true);
-    $("saveBtn").disabled = true;
+    $("saveBtn").disabled = $("copyBtn").disabled = true;
     // Lists and their buttons (Remove, Launch…) were the other headset's: clear them
     // before anyone clicks one, until the new headset's arrive.
     ["games", "titleList", "andApps", "flatpaks", "shotGrid", "gmGrid"].forEach(id => {
@@ -4307,7 +4574,7 @@ function onConnection(s) {
     disp.list = []; disp.port = null;
     // The lists behind those panels too, so filters can't bring the old ones back.
     gm.owned = null; gm.byId = new Map(); gm.results = []; gm.store = []; gm.storeQ = null; gm.shown = 0; gm.seq++;
-    androidApps = []; shots.list = [];
+    androidApps = []; resetShots();
     titlesSeq++; disp.seq++;  // answers to loads already on their way are ignored
     if (cat.apps) filterCatalog();  // "Installed" tags were the other headset's
     // Confirmations still open were checked against the other headset.
@@ -4323,7 +4590,7 @@ function onConnection(s) {
       $("offline").hidden = true;
       const reload = link.reload;
       link.reload = false;
-      refresh().then(() => { if (reload) reloadAll(); });
+      refresh().then(() => { if (reload) reloadAll(); checkContactPrompt(); });
     } else if (s.phase === "failed" && s.error) {
       setOnline(false, s.error.message);
     } else if (s.phase === "connecting" && prev && prev.phase === "connected") {

ui/server.py

@@ -50,6 +50,7 @@ import frame_catalog  # noqa: E402
 import frame_devices  # noqa: E402
 import frame_steamgriddb
 import frame_comfort  # noqa: E402
+import frame_contact  # noqa: E402
 import frame_host  # noqa: E402
 import frame_link  # noqa: E402
 import frame_macview  # noqa: E402
@@ -332,12 +333,14 @@ def ssh(remote, *, stdin=None, timeout=30, text=True):
         # Never let ssh inherit our stdin: under the app it's the pipe held open for
         # --exit-on-eof, and Windows' ssh.exe waits on it forever.
         feed = {"input": stdin} if stdin is not None else {"stdin": subprocess.DEVNULL}
-        r = subprocess.run([*SSH, FRAME, remote], capture_output=True, **feed,
-                           text=text, errors="replace" if text else None, timeout=timeout)
+        r = frame_host.run_ssh([*SSH, FRAME, remote], capture_output=True, **feed,
+                               text=text, errors="replace" if text else None, timeout=timeout)
     except subprocess.TimeoutExpired:
         raise Failure(f"Timed out talking to {FRAME}")
     if r.returncode != 0:
         err = (r.stderr or r.stdout) if text else (r.stderr or r.stdout).decode(errors="replace")
+        if r.returncode == 255 and repair_ssh_config(err):
+            return ssh(remote, stdin=stdin, timeout=timeout, text=text)
         if r.returncode == 255 and LINK and unreachable(err):
             LINK.lost(err, route_gen)  # ssh itself failed: the connector reconnects
         failure = Failure(strip_ansi(err).strip() or f"ssh exited {r.returncode}")
@@ -346,6 +349,30 @@ def ssh(remote, *, stdin=None, timeout=30, text=True):
     return r.stdout
 
 
+_config_repaired = False
+
+
+def repair_ssh_config(err):
+    """Windows' OpenSSH refused ~/.ssh/config for its ACL: give the file a private one,
+    once per run. -> True if it did, so the command is worth retrying."""
+    global _config_repaired
+    if _config_repaired or not frame_host.WINDOWS or frame_host.BAD_PERMISSIONS not in err:
+        return False
+    # ssh doubles the backslashes: "C:\\Users\\me/.ssh/config"
+    named = re.sub(r"[\\/]+", "/", err.split(frame_host.BAD_PERMISSIONS, 1)[1].splitlines()[0].strip())
+    config = frame_devices.ssh_config()
+    if not named.lower().endswith("/" + config.name.lower()):
+        return False  # a key or another file: not ours to rewrite
+    _config_repaired = True
+    try:
+        if frame_devices.repair_permissions(config):
+            print(f"Gave {config} a private ACL: ssh refused it ({named})", file=sys.stderr)
+            return True
+    except OSError as e:
+        print(f"Couldn't repair {config}'s permissions: {e}", file=sys.stderr)
+    return False
+
+
 def strip_ansi(s):
     return re.sub(r"\x1b\[[0-9;?]*[A-Za-z]|\r", "", s)
 
@@ -503,8 +530,8 @@ def save_shots(body):
         incoming = Path(tempfile.mkdtemp(prefix=".incoming-", dir=SHOTS_DIR))
         try:
             try:
-                r = subprocess.run(["scp", "-p", *SSH[1:], *(f"{FRAME}:{p}" for p in todo), str(incoming)],
-                                   capture_output=True, stdin=subprocess.DEVNULL, text=True, timeout=300)
+                r = frame_host.run_ssh(["scp", "-p", *SSH[1:], *(f"{FRAME}:{p}" for p in todo), str(incoming)],
+                                       capture_output=True, stdin=subprocess.DEVNULL, text=True, timeout=300)
             except subprocess.TimeoutExpired:
                 raise Failure("Copying screenshots timed out")
             if r.returncode != 0:
@@ -1192,6 +1219,14 @@ def open_thing(body):
             SHOTS_DIR.mkdir(parents=True, exist_ok=True)
             frame_host.open_path(SHOTS_DIR)
             return {"message": f"Opened {SHOTS_DIR} in {frame_host.FILE_MANAGER}"}
+        if what == "shot":
+            saved = SHOTS_DIR / shot_path(body.get("id")).rsplit("/", 1)[-1]
+            if not saved.exists():
+                raise Failure("That screenshot isn't saved on this computer yet", 404)
+            frame_host.reveal_path(saved)
+            return {"message": f"Showed {saved.name} in {frame_host.FILE_MANAGER}"}
+    except frame_host.Unreachable as e:
+        raise Failure(str(e), 400)  # theirs to turn on; nothing failed here
     except frame_host.HostError as e:
         raise Failure(str(e), 500)
     raise Failure("unknown target", 400)
@@ -2151,6 +2186,7 @@ POST = {
         "/api/webinstall/check": webinstall_check, "/api/webinstall/start": webinstall_start,
         "/api/webinstall/cancel": webinstall_cancel,
         "/api/telemetry": frame_telemetry.update_settings, "/api/telemetry/event": frame_telemetry.page_event,
+        "/api/contact": frame_contact.save, "/api/contact/prompt": frame_contact.prompt,
         "/api/report/preview": report_preview, "/api/report": report_send, "/api/macview": macview_action, "/api/panels": panels_action,
         "/api/devices": lambda body: devices_post(body)}
 
@@ -2246,7 +2282,7 @@ def push_file(path, dest="Downloads/"):
         else:
             # Modern scp uses SFTP, so the remote path isn't parsed by a shell.
             cmd = ["scp", *SSH[1:], "-r", str(path), f"{FRAME}:{dest}"]
-        r = subprocess.run(cmd, capture_output=True, stdin=subprocess.DEVNULL, text=True, errors="replace", timeout=3600)
+        r = frame_host.run_ssh(cmd, capture_output=True, stdin=subprocess.DEVNULL, text=True, errors="replace", timeout=3600)
     except subprocess.TimeoutExpired:
         raise Failure(f"Copying {name} timed out")
     if r.returncode != 0:
@@ -2254,6 +2290,11 @@ def push_file(path, dest="Downloads/"):
     return f"Sent {name} to ~/{dest}"
 
 
+class ClientGone(Exception):
+    """The page went away (a reload, the app quitting) before its reply was written:
+    nobody to answer, and nothing went wrong here."""
+
+
 class Handler(BaseHTTPRequestHandler):
     server_version = "FrameControl/1"
     timeout = 60  # per socket operation, so a stalled client can't hold a thread
@@ -2286,8 +2327,11 @@ class Handler(BaseHTTPRequestHandler):
         # Nobody may frame the UI (clickjacking).
         self.send_header("X-Frame-Options", "DENY")
         self.send_header("Content-Security-Policy", "frame-ancestors 'none'")
-        self.end_headers()
-        self.wfile.write(data)
+        try:
+            self.end_headers()
+            self.wfile.write(data)
+        except ConnectionError as e:  # Windows says ConnectionAbortedError, others BrokenPipeError
+            raise ClientGone() from e
 
     def send_json(self, obj, status=200):
         self.send_bytes(json.dumps(obj).encode(), "application/json", status)
@@ -2330,6 +2374,8 @@ class Handler(BaseHTTPRequestHandler):
                 from apk_sources import _images
                 try:
                     self.send_bytes(*_images.image(path.rsplit("/", 1)[-1]))
+                except ClientGone:
+                    raise
                 except Exception:
                     self.send_json({"error": "Artwork unavailable"}, 404)
             elif path == "/api/sources/details":
@@ -2380,6 +2426,8 @@ class Handler(BaseHTTPRequestHandler):
                 self.send_json(macview_state(parse_qs(url.query)))
             elif path == "/api/telemetry":
                 self.send_json(frame_telemetry.state())
+            elif path == "/api/contact":
+                self.send_json(frame_contact.state())
             elif path == "/api/computer/state":
                 self.send_json(json.loads(ssh("python3 -", stdin=(HERE / "frame_computer.py").read_text(), timeout=20)))
             elif path == "/api/status":
@@ -2405,6 +2453,8 @@ class Handler(BaseHTTPRequestHandler):
                                 headers=[("X-Capture-Source", "gamescope")])
             else:
                 self.send_json({"error": "not found"}, 404)
+        except ClientGone:
+            raise
         except Failure as e:
             self.send_error_json(str(e), e.status, e.apk)
         except ValueError as e:
@@ -2439,6 +2489,8 @@ class Handler(BaseHTTPRequestHandler):
             with (contextlib.nullcontext() if path == "/api/devices" else working(meant)):
                 result = handler(body)
             self.send_json(result)
+        except ClientGone:
+            raise
         except Failure as e:
             if e.status >= 500:
                 frame_telemetry.diagnostic(f"POST {path} {action_of(body)}", e)
@@ -2614,6 +2666,10 @@ class LoopbackServer(ThreadingHTTPServer):
         socketserver.TCPServer.server_bind(self)
         self.server_name, self.server_port = "127.0.0.1", self.server_address[1]
 
+    def handle_error(self, request, client_address):
+        if not isinstance(sys.exc_info()[1], ClientGone):
+            super().handle_error(request, client_address)
+
 
 _ONE_SERVER = None
 
@@ -2644,6 +2700,7 @@ def main():
     sweep_tmp()
     threading.Thread(target=apk_search.warm, daemon=True).start()  # big indexes download before the first search
     frame_telemetry.start()
+    frame_contact.start()
     global LINK, _ONE_SERVER
     if not LOCAL:
         if not PRIVATE:  # a private server only uses the headsets (see one_server)
@@ -2656,12 +2713,16 @@ def main():
         signal.signal(signal.SIGTERM, lambda *_: (_ for _ in ()).throw(KeyboardInterrupt))
     if args.exit_on_eof:
         def watch_stdin():
-            sys.stdin.buffer.read()
+            # os.read, not sys.stdin.buffer.read: a buffered read holds stdin's lock,
+            # and if a signal stops the server first, Python aborts (SIGABRT) at exit
+            # when it can't take that lock back from this thread.
+            while os.read(0, 4096):
+                pass
             threading.Thread(target=httpd.shutdown, daemon=True).start()
         threading.Thread(target=watch_stdin, daemon=True).start()
-    # The real port, which --port 0 leaves to the system (the iPhone app reads it from here).
-    print(f"Frame Control on http://127.0.0.1:{httpd.server_address[1]}  (alias: {FRAME}; Ctrl-C to stop)", flush=True)
     try:
+        # The real port, which --port 0 leaves to the system (the iPhone app reads it from here).
+        print(f"Frame Control on http://127.0.0.1:{httpd.server_address[1]}  (alias: {FRAME}; Ctrl-C to stop)", flush=True)
         httpd.serve_forever()
     except KeyboardInterrupt:
         pass