Release 0.5.3: OPML orphan scan, feed error UI, small UI fixes

- Stop scanning an OPML/Patreon feed's derived rows once nobody subscribes
  to it; retire them (drop or orphan) the way sync_group already does when
  the list itself drops one. This is what let 922 defunct davewiner feeds
  keep scanning hourly after the OPML left config.
- Repair feed XML with a bare `&`, and give a plain reason (moved web page
  with its new address when linked, or nothing yet for an empty body)
  instead of a raw parser error.
- Show a failing feed's plain-English reason and next step (Unsubscribe /
  Use the new address) in the sidebar and on its own page, once it has
  been down a day.
- Fix four small UI bugs: show-note links open in a new tab, video files
  play as video, an opened item no longer disappears from the Unread tab,
  and Subscribe/Unsubscribe get their own icons.
- Fix Settings disappearing for non-admin accounts: it was hiding the
  whole modal instead of just the admin-only parts (Users, the editable
  schedule/quota, Save), which are the only parts the server actually
  refuses them.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DmQfE1eFPApnXWyPHBWqUA

CHANGELOG.md

@@ -10,6 +10,43 @@ The long form, with what was wrong before and how it was found, is in
 
 ## [Unreleased]
 
+## [0.5.3] - 2026-09-14
+
+### Added
+
+- A feed that has been failing for a day shows a plain-English reason in the sidebar and on its
+  own page, sorted from a 404, a 401/403, a 402, a name that no longer resolves, or a web page in
+  place of the feed -- with Unsubscribe or, when the page links its new feed, Use the new address.
+  A feed that fails once and reads fine again within a day is never flagged.
+
+### Changed
+
+- Unsubscribing from the last person's OPML or Patreon subscription now retires the feeds it
+  listed, the same as a feed the list itself drops: removed if nothing was downloaded, kept and
+  marked orphaned otherwise. Until now they stayed in the database and kept being scanned hourly
+  with auto-download on, which is how 922 defunct `davewiner` feeds outlived the OPML that listed
+  them.
+
+### Fixed
+
+- A feed whose XML uses a bare `&` instead of `&` (kcpw, both feedland feeds) is now read
+  instead of refused.
+- A feed URL that now serves a web page says so, and names the feed the page links to when it has
+  one, instead of a raw XML parser error.
+- A publisher answering with an empty body (British Antarctic Survey's 202) is read as nothing new
+  to report, not a parse failure.
+- A link in an item's show notes opens in a new tab instead of navigating away from ipx.
+- A video file plays as video, in a small floating pane above the player bar, instead of silently
+  as sound only.
+- On the Unread tab, opening an item no longer makes it disappear from the list -- it stays until
+  you open a different one, even if a scan finishes and refreshes the list while it is open.
+- Subscribe and Unsubscribe have their own icons (a circled check and a circled minus) instead of
+  sharing the generic plus and minus used for adding feeds, users and imports.
+- Settings no longer disappears for a non-admin account. It was hiding the whole Settings modal
+  along with the log and the users screen, but a non-admin has settings of their own in there --
+  their subscriptions' Export and Import, and the schedule and quota are worth seeing even without
+  a say in them. Only the log and the users screen, which the server also refuses them, are gone.
+
 ## [0.5.2] - 2026-09-12
 
 ### Added
@@ -295,7 +332,8 @@ The long form, with what was wrong before and how it was found, is in
 - Torrent enclosures through librqbit, seeding to a ratio or a time, with a stall timeout.
 - `ipx import` and `ipx export` for OPML, and systemd units in `contrib/`.
 
-[unreleased]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.5.2...main
+[unreleased]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.5.3...main
+[0.5.3]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.5.2...v0.5.3
 [0.5.2]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.5.1...v0.5.2
 [0.5.1]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.5.0...v0.5.1
 [0.5.0]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.4.0...v0.5.0

Cargo.lock

@@ -1605,7 +1605,7 @@ checksum = "791930b43c0d5973160d90a8f3894509f2b273430f5c5c73b668636d0287c5c0"
 
 [[package]]
 name = "ipx"
-version = "0.5.2"
+version = "0.5.3"
 dependencies = [
  "ammonia",
  "anyhow",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ipx"
-version = "0.5.2"
+version = "0.5.3"
 edition = "2024"
 
 [dependencies]

TODO.md

@@ -1,27 +1,57 @@
 # To do
 
-## Trim the state database
+## Errors in the log
 
-From an audit of the database layer and a read-only copy of production on 2026-09-12. The data
-itself was clean: no leftover tables or indexes, 47 free pages, one stray `entry_state` row.
-Check each against the code before cutting it.
+From the production log and the feeds' stored errors on 2026-09-13. The Docker log only reached back
+to 12:32 UTC, so the list comes from `feeds.last_error`: 57 of 1,059 feeds. None of it is ipx's
+User-Agent; a browser gets the same answers.
 
-- [x] **`migrate()`'s add list.** All eight columns arrived in 0.2.0, and 0.5.0 only supports
-  upgrades from 0.3.0 on. Drop the list and its loop; keep the `retired` drop loop, which a
-  database coming from 0.4.0 still needs. (`src/db.rs`)
-- [x] **`Db::subscribed_feed_ids`.** No callers; its doc says the scanner walks it, and it does not.
-  (`src/db.rs`)
-- [x] **`Db::subscriber_count`.** One caller, which only asks whether it is above zero:
-  `subscriber_counts()?.contains_key(&id)`. (`src/db.rs`, `src/web.rs`)
-- [x] **The `created` columns** on `users`, `subscriptions` and `sessions`. Written on every insert,
-  never read. Add them to `retired` and drop them from the inserts. (`src/db.rs`)
-- [x] **`Managed.orphaned`.** Selected by `managed_feeds()` on every call and never read;
-  `FeedSummary.orphaned` is what the UI uses. (`src/db.rs`)
+- [x] **Stop scanning an OPML's feeds once nobody subscribes to it.** 55 of the 57 are feeds from
+  `davewiner` (lists.opml.org/davefeeds.xml). The list left `config.toml` about 14 hours before this
+  was written, but its 922 feeds are still in the database and still scanned every hour, with
+  auto-download on: `subscriptions()` adds every derived feed, and with no parent to copy from,
+  `auto_download` falls back to `true` (`src/main.rs:937`). `docs/users.md` says a feed stops being
+  scanned when its last subscriber leaves. Skip a derived feed whose parent is not in config, and
+  when the last subscriber leaves an OPML, treat its feeds the way `sync_group` treats ones the list
+  dropped: remove those with nothing downloaded, mark the rest orphaned. `remove_feed` and `ipx rm`
+  both leave them behind today. (`src/main.rs`, `src/web.rs`)
+- [x] **Read feeds with a bare `&`.** kcpw has `<link>https://kcpw.org/?post_type=post&p=125715</link>`,
+  and both feedland feeds have the same fault. Strict XML refuses them; browsers and other readers do
+  not. When `feed::parse` fails, try once more with every `&` that does not start an entity written
+  as `&amp;`. Nobody subscribes to these three now, but the next feed like them will fail the same
+  way. (`src/feed.rs`)
+- [x] **Say what came back when it is not a feed.** Thirteen errors read "not RSS (the input did not
+  begin with an rss tag) and not Atom (...)". Each one checked was a web page: the feed moved and its
+  old URL redirects to the site, or the domain lapsed. Say "got a web page, not a feed", and when the
+  page links a feed (`<link rel="alternate" type="application/rss+xml">`), name it. That link found
+  the new feed for om.co, ms.now, Letters of Note, the Daily Dot, Hell Gate, The Frame Lab and
+  Daily Kos. A `202` with an empty body (British Antarctic Survey) should read as "nothing yet", not
+  as a parse failure. (`src/feed.rs`)
+- [x] **Show a publisher's error in the UI.** Today a failing feed shows its raw error in red only
+  once you open it (`web/index.html:877`, `:960`); the OPML view marks a failing child "error"
+  (`:988`), and the sidebar shows nothing. Mark a failing feed in the sidebar too, and say whose
+  problem it is and what to do, in plain words: a 404 means the publisher took the feed down or moved
+  it, 401 and 403 that the site refuses ipx, 402 that the feed needs a paid plan, a name that no
+  longer resolves that the site is gone, and a web page instead of a feed that it moved (with the new
+  URL when the page links one). Offer Unsubscribe, or Use the new address. Keep timeouts, 5xx and
+  429 out of it, and flag a feed only once it has failed for a day: macmanx failed once and read
+  fine an hour later. That needs the time a feed started failing, kept beside `last_error` and
+  cleared when a check succeeds. (`web/index.html`, `src/db.rs`, `src/main.rs`)
+- [ ] **Westenberg.** The only failing feed anyone subscribes to. The Hacker News stars list still
+  gives `joanwestenberg.com/rss`, which is a 404; the feed is now `joanwestenberg.com/feed`.
+  Nothing for ipx to fix; subscribe to the new URL directly.
 
-## Popular
+## Other Fixes and Features
 
-- [x] **Popular lists feeds the way Directory does**: the feeds inside an OPML or a Patreon
-  creator, never the collection itself. (`src/web.rs`, `web/index.html`)
+- [ ] Remember which feed is selected and view (all, unread, flagged, etc) user as selected between visits. If unknown default to All Subscriptions
+- [x] When clicking any link it should open in a new tab
+- [ ] In mobile (iOS) sometimes the top line items like the hamburger menu are not clickable unless you do a hard refresh 
+- [x] video files play as audio files, they should play as video.
+- [ ] Move Light/Dark/Classic options to user settings. Include an Auto mode that uses system preferences for light/dark modes
+- [ ] Below Popular, have a currently listening section to show what podcasts have been started and not finnished
+- [x] Update subscribe/unsubscribe icons to be circle-minus (unsubscribe) and circle-check (subscribe)
+- [x] If I'm on the Unread tab, and I click to read an item the entry in the list will disappear. it should remain until I click to another item.
 
-After these: `cargo test`, `node tests/page-smoke.js`, `npx playwright test`. Copy `state.db`
-aside before deploying: `migrate()` drops columns on the first start.
+## Directory Overhaul
+
+- [ ] Directory needs to be more functional, with categories and a more interesting layout. use /frontend-design to help

docs/history.md

@@ -6,6 +6,28 @@ reasoning lives. New write-ups go at the top.
 
 See [README.md](../README.md) for what the thing is.
 
+## 2026-09-14 — Settings, for everyone with an account
+
+A user reported that Settings disappeared shortly after they signed in: it showed for a moment,
+then was gone. `#prefs` sat inside the same `.tgroup` as `#logs`, and `api('/api/me')` hid the
+whole group -- `$('#admintools').hidden=true` -- the moment it learned the account was not an
+admin. Nothing wrong with that check timing; it was hiding the wrong thing.
+
+The Settings modal is not actually all-or-nothing. `GET /api/settings`, and Export and Import
+OPML, carry no admin check server-side -- `export_opml` and `import_opml` work from a user's own
+subscriptions, and the schedule/quota page is read-only information, not a control. Only the
+`PATCH` that changes those settings, and the Users screen behind it, return 403 for anyone but an
+admin. The comment above the old hide -- "scanning, quotas, accounts and the log are the
+operator's business" -- was wrong about quotas and half wrong about accounts: reading them is
+everyone's; changing them is the operator's.
+
+`prefsModal()` now branches on `S.me.admin` the way the per-feed settings modal already does for
+its URL field: a non-admin gets the schedule and quota as text, Subscriptions (Export/Import)
+in full, and no Users section or Save button. Only `#logs` stays hidden, since the log names every
+account and every failed sign-in. The browser test for a second account asserted the old
+behaviour outright (`#prefs` hidden, not an admin) rather than what the server actually allows;
+fixing the UI meant fixing the test's premise too, not just the assertion.
+
 ## 2026-09-12 — Healthy while busy
 
 After a deploy the container sat at "starting" for a minute, and Docker's health log showed two

src/db.rs

@@ -22,6 +22,10 @@ CREATE TABLE IF NOT EXISTS feeds (
     last_checked  INTEGER,
     ttl_mins      INTEGER,
     last_error    TEXT,
+    -- When the current run of failures began; NULL while the feed is healthy. Kept
+    -- through repeated failures so the UI can tell a blip (macmanx: failed once, fine an
+    -- hour later) from a feed that has been down for a day.
+    error_since   INTEGER,
     -- Came from a subscribed OPML that no longer lists it, but has downloads, so kept.
     orphaned      INTEGER NOT NULL DEFAULT 0,
     -- The OPML subscription this feed came from.
@@ -165,6 +169,7 @@ fn migrate(conn: &Connection) -> Result<()> {
         // and it came back the same day with `last_login` beside it.
         ("users", "created", "INTEGER"),
         ("users", "last_login", "INTEGER"),
+        ("feeds", "error_since", "INTEGER"),
     ];
     let retired: &[(&str, &str)] = &[
         // Read state from before accounts, long since moved to entry_state. Two bugs came from
@@ -208,6 +213,8 @@ pub struct FeedSummary {
     pub orphaned: bool,
     pub last_checked: Option<i64>,
     pub last_error: Option<String>,
+    /// When this run of failures began; see the `error_since` column.
+    pub error_since: Option<i64>,
     pub entries: i64,
     pub downloaded: i64,
 }
@@ -249,7 +256,7 @@ impl Db {
         let conn = self.conn.lock().unwrap();
         let mut sum: FeedSummary = conn
             .query_row(
-                "SELECT title, image, last_checked, last_error, coalesce(orphaned, 0)
+                "SELECT title, image, last_checked, last_error, coalesce(orphaned, 0), error_since
                  FROM feeds WHERE id = ?1",
                 [feed_id],
                 |r| {
@@ -259,6 +266,7 @@ impl Db {
                         last_checked: r.get(2)?,
                         last_error: r.get(3)?,
                         orphaned: r.get::<_, i64>(4)? != 0,
+                        error_since: r.get(5)?,
                         ..Default::default()
                     })
                 },
@@ -333,7 +341,8 @@ impl Db {
                 last_checked = excluded.last_checked,
                 ttl_mins = excluded.ttl_mins,
                 image = coalesce(excluded.image, feeds.image),
-                last_error = NULL",
+                last_error = NULL,
+                error_since = NULL",
             rusqlite::params![feed_id, url, title, etag, last_modified, now(), ttl_mins.map(|t| t as i64), image],
         )?;
         Ok(())
@@ -344,7 +353,8 @@ impl Db {
         let conn = self.conn.lock().unwrap();
         conn.execute(
             "INSERT INTO feeds (id, url, last_checked) VALUES (?1, ?2, ?3)
-             ON CONFLICT(id) DO UPDATE SET last_checked = excluded.last_checked, last_error = NULL",
+             ON CONFLICT(id) DO UPDATE SET last_checked = excluded.last_checked,
+                last_error = NULL, error_since = NULL",
             rusqlite::params![feed_id, url, now()],
         )?;
         Ok(())
@@ -363,10 +373,15 @@ impl Db {
 
     pub fn set_feed_error(&self, feed_id: &str, url: &str, msg: &str) -> Result<()> {
         let conn = self.conn.lock().unwrap();
+        let now = now();
         conn.execute(
-            "INSERT INTO feeds (id, url, last_checked, last_error) VALUES (?1, ?2, ?3, ?4)
-             ON CONFLICT(id) DO UPDATE SET last_checked = excluded.last_checked, last_error = excluded.last_error",
-            rusqlite::params![feed_id, url, now(), msg],
+            "INSERT INTO feeds (id, url, last_checked, last_error, error_since)
+             VALUES (?1, ?2, ?3, ?4, ?3)
+             ON CONFLICT(id) DO UPDATE SET
+                last_checked = excluded.last_checked,
+                last_error = excluded.last_error,
+                error_since = coalesce(feeds.error_since, excluded.error_since)",
+            rusqlite::params![feed_id, url, now, msg],
         )?;
         Ok(())
     }
@@ -1766,6 +1781,26 @@ mod tests {
         assert_eq!(explicit(None), [None, Some(false)], "outside a group nothing is inherited");
     }
 
+    #[test]
+    fn error_since_marks_the_start_of_a_run_of_failures_and_clears_on_success() {
+        let db = Db::memory().unwrap();
+        db.set_feed_error("f", "http://x", "HTTP 404").unwrap();
+        // Backdate it, as if this feed had already been failing a while, so a second
+        // failure landing "now" is distinguishable from the first.
+        db.exec_for_test("UPDATE feeds SET error_since = error_since - 3600 WHERE id = 'f'").unwrap();
+        let first = db.feed_summary("f").unwrap().error_since.unwrap();
+
+        // macmanx: failed once, read fine an hour later. A second failure must not push
+        // error_since forward -- the UI decides "failing for a day" from the first one.
+        db.set_feed_error("f", "http://x", "HTTP 404").unwrap();
+        assert_eq!(db.feed_summary("f").unwrap().error_since, Some(first));
+
+        db.touch_feed("f", "http://x").unwrap();
+        let after = db.feed_summary("f").unwrap();
+        assert_eq!(after.last_error, None);
+        assert_eq!(after.error_since, None, "a clean check ends the run of failures");
+    }
+
     #[test]
     fn enclosure_url_is_the_dedupe_key() {
         let db = Db::memory().unwrap();

src/feed.rs

@@ -87,6 +87,50 @@ pub async fn fetch(
     Ok(Fetched::Body { bytes, etag, last_modified })
 }
 
+/// A stored `last_error`, translated into plain words for whoever subscribes: whose problem
+/// it is, and whether there is a new address to switch to.
+pub struct Failure {
+    pub reason: &'static str,
+    pub new_url: Option<String>,
+}
+
+/// Reads a `last_error` the same way `set_feed_error` received it (`format!("{e:#}")` on the
+/// anyhow chain from `fetch` or `parse`) and says what it means, for the errors worth telling
+/// someone about. Everything else -- a timeout, a 5xx, a 429, a feed that is simply garbled --
+/// comes back `None`: transient by nature, or with nothing more useful to say than the raw
+/// text already shown once a feed is open.
+///
+/// ponytail: matches on the fixed strings this crate itself produces (`anyhow!("HTTP
+/// {status}")`, and the "got a web page" message above) plus the substrings a DNS failure
+/// reliably contains. Fragile if reqwest's own wording changes; the fallback is just showing
+/// nothing extra, so a miss costs a clearer message, not a wrong one.
+pub fn explain_failure(msg: &str) -> Option<Failure> {
+    if let Some(rest) = msg.strip_prefix("got a web page, not a feed") {
+        let new_url = rest
+            .strip_prefix("; it links ")
+            .and_then(|r| r.strip_suffix(" as its feed"))
+            .map(str::to_owned);
+        return Some(Failure { reason: "The feed moved; this address now shows a web page.", new_url });
+    }
+    let low = msg.to_ascii_lowercase();
+    if low.contains("http 404") {
+        return Some(Failure { reason: "The publisher took this feed down, or moved it.", new_url: None });
+    }
+    if low.contains("http 401") || low.contains("http 403") {
+        return Some(Failure { reason: "The site refuses ipx's requests.", new_url: None });
+    }
+    if low.contains("http 402") {
+        return Some(Failure { reason: "The feed now needs a paid plan.", new_url: None });
+    }
+    if low.contains("dns error")
+        || low.contains("failed to lookup address")
+        || low.contains("no address associated")
+    {
+        return Some(Failure { reason: "This address no longer resolves; the site is gone.", new_url: None });
+    }
+    None
+}
+
 /// True when a body is an OPML document rather than a feed.
 ///
 /// The original matched on the URL ending in ".opml" (iPXClass.py:34), which misses an
@@ -220,11 +264,110 @@ pub fn parse(bytes: &[u8]) -> Result<ParsedFeed> {
         Ok(ch) => Ok(from_rss(ch, bytes)),
         Err(rss_err) => match atom_syndication::Feed::read_from(bytes) {
             Ok(feed) => Ok(from_atom(feed)),
-            Err(atom_err) => Err(anyhow!("not RSS ({rss_err}) and not Atom ({atom_err})")),
+            Err(atom_err) => {
+                // Some publishers (kcpw, feedland) write a bare "&" in a URL instead of
+                // "&amp;". Strict XML parsers refuse it; browsers don't. Retry once with
+                // every offending "&" escaped rather than fail outright.
+                let escaped = escape_bare_ampersands(bytes);
+                if escaped != bytes {
+                    if let Ok(ch) = rss::Channel::read_from(escaped.as_slice()) {
+                        return Ok(from_rss(ch, &escaped));
+                    }
+                    if let Ok(feed) = atom_syndication::Feed::read_from(escaped.as_slice()) {
+                        return Ok(from_atom(feed));
+                    }
+                }
+                Err(match alternate_feed_link(bytes) {
+                    Some(href) if looks_like_html(bytes) => {
+                        anyhow!("got a web page, not a feed; it links {href} as its feed")
+                    }
+                    None if looks_like_html(bytes) => anyhow!("got a web page, not a feed"),
+                    _ => anyhow!("not RSS ({rss_err}) and not Atom ({atom_err})"),
+                })
+            }
         },
     }
 }
 
+/// Whether a body is a web page rather than a feed: most of the errors traced back to a feed
+/// that moved or a domain that lapsed, with the old URL now serving the site instead (or a
+/// redirect to it). `is_opml` already sniffs the other "not actually a feed" case.
+fn looks_like_html(bytes: &[u8]) -> bool {
+    let head = String::from_utf8_lossy(&bytes[..bytes.len().min(2048)]).to_lowercase();
+    head.contains("<!doctype html") || head.contains("<html")
+}
+
+/// The feed a web page names as its own via `<link rel="alternate" type="application/rss+xml"
+/// href="...">` (or the Atom equivalent) -- how the new address was found for om.co, ms.now,
+/// Letters of Note, the Daily Dot, Hell Gate, The Frame Lab and Daily Kos.
+fn alternate_feed_link(bytes: &[u8]) -> Option<String> {
+    let text = String::from_utf8_lossy(bytes);
+    let lower = text.to_lowercase();
+    let mut pos = 0;
+    while let Some(rel) = lower[pos..].find("<link") {
+        let start = pos + rel;
+        let Some(end) = lower[start..].find('>').map(|e| start + e) else { break };
+        pos = end + 1;
+        let tag = &text[start..end];
+        let tag_lower = &lower[start..end];
+        let is_alternate = tag_lower.contains("rel=\"alternate\"") || tag_lower.contains("rel='alternate'");
+        let is_feed_type = tag_lower.contains("rss+xml") || tag_lower.contains("atom+xml");
+        if is_alternate && is_feed_type
+            && let Some(href) = tag_attr(tag, "href")
+        {
+            return Some(href);
+        }
+    }
+    None
+}
+
+/// The value of one attribute in an HTML/XML start tag, however it is quoted.
+fn tag_attr(tag: &str, name: &str) -> Option<String> {
+    let key = format!("{name}=");
+    let idx = tag.to_lowercase().find(&key)?;
+    let after = &tag[idx + key.len()..];
+    let quote = after.chars().next()?;
+    if quote != '"' && quote != '\'' {
+        return None;
+    }
+    let rest = &after[1..];
+    let close = rest.find(quote)?;
+    Some(rest[..close].trim().to_owned())
+}
+
+/// Escapes every `&` that does not already start a recognized XML entity
+/// (`&amp;`, `&lt;`, `&gt;`, `&quot;`, `&apos;`, or a numeric reference like `&#39;`).
+fn escape_bare_ampersands(bytes: &[u8]) -> Vec<u8> {
+    fn is_entity_start(rest: &[u8]) -> bool {
+        for named in [&b"amp;"[..], b"lt;", b"gt;", b"quot;", b"apos;"] {
+            if rest.starts_with(named) {
+                return true;
+            }
+        }
+        let digits = if rest.starts_with(b"#x") || rest.starts_with(b"#X") {
+            &rest[2..]
+        } else if rest.starts_with(b"#") {
+            &rest[1..]
+        } else {
+            return false;
+        };
+        let len = digits.iter().take_while(|b| b.is_ascii_alphanumeric()).count();
+        len > 0 && digits.get(len) == Some(&b';')
+    }
+
+    let mut out = Vec::with_capacity(bytes.len());
+    let mut i = 0;
+    while i < bytes.len() {
+        if bytes[i] == b'&' && !is_entity_start(&bytes[i + 1..]) {
+            out.extend_from_slice(b"&amp;");
+        } else {
+            out.push(bytes[i]);
+        }
+        i += 1;
+    }
+    out
+}
+
 /// Every `<enclosure>` of every `<item>`, in document order.
 ///
 /// The `rss` crate models an item as having at most one enclosure -- which is what RSS 2.0
@@ -591,6 +734,46 @@ mod tests {
         );
     }
 
+    #[test]
+    fn explain_failure_translates_the_errors_the_ui_should_flag() {
+        assert_eq!(
+            explain_failure("HTTP 404 Not Found").unwrap().reason,
+            "The publisher took this feed down, or moved it."
+        );
+        assert_eq!(explain_failure("HTTP 401 Unauthorized").unwrap().reason, "The site refuses ipx's requests.");
+        assert_eq!(explain_failure("HTTP 403 Forbidden").unwrap().reason, "The site refuses ipx's requests.");
+        assert_eq!(explain_failure("HTTP 402 Payment Required").unwrap().reason, "The feed now needs a paid plan.");
+        let dns = explain_failure("connecting: dns error: failed to lookup address information").unwrap();
+        assert_eq!(dns.reason, "This address no longer resolves; the site is gone.");
+        let moved = explain_failure("got a web page, not a feed; it links https://x/feed as its feed").unwrap();
+        assert_eq!(moved.new_url.as_deref(), Some("https://x/feed"));
+        assert!(explain_failure("got a web page, not a feed").unwrap().new_url.is_none());
+        for transient in ["HTTP 500 Internal Server Error", "HTTP 429 Too Many Requests", "operation timed out"] {
+            assert!(explain_failure(transient).is_none(), "{transient} must not be flagged");
+        }
+    }
+
+    #[test]
+    fn a_web_page_says_so_and_names_the_feed_it_links() {
+        let html = br#"<!doctype html><html><head>
+            <link rel="alternate" type="application/rss+xml" href="https://x.example/feed">
+            </head><body>not a feed</body></html>"#;
+        let err = parse(html).unwrap_err().to_string();
+        assert_eq!(err, "got a web page, not a feed; it links https://x.example/feed as its feed");
+    }
+
+    #[test]
+    fn a_web_page_with_no_feed_link_still_says_so() {
+        let html = b"<!doctype html><html><body>moved</body></html>";
+        assert_eq!(parse(html).unwrap_err().to_string(), "got a web page, not a feed");
+    }
+
+    #[test]
+    fn garbage_that_is_not_html_gets_the_original_parser_errors() {
+        let err = parse(b"not xml at all").unwrap_err().to_string();
+        assert!(err.starts_with("not RSS ("), "{err}");
+    }
+
     #[test]
     fn parses_atom_enclosure_links() {
         let bytes = include_bytes!("../tests/data/atom.xml");
@@ -613,6 +796,27 @@ mod tests {
         );
     }
 
+    #[test]
+    fn a_bare_ampersand_in_a_link_is_repaired_and_parsed() {
+        // kcpw.org: <link>https://kcpw.org/?post_type=post&p=125715</link> -- a bare "&"
+        // that strict XML rejects but browsers accept.
+        let xml = br#"<?xml version="1.0"?>
+        <rss version="2.0"><channel><title>X</title><link>https://x</link><description>d</description>
+        <item><title>a</title><guid>g1</guid>
+        <link>https://kcpw.org/?post_type=post&p=125715</link>
+        <enclosure url="https://x/a.mp3?a=1&b=2" length="1" type="audio/mpeg"/></item>
+        </channel></rss>"#;
+        let feed = parse(xml).unwrap();
+        assert_eq!(feed.entries[0].link.as_deref(), Some("https://kcpw.org/?post_type=post&p=125715"));
+        assert_eq!(feed.entries[0].enclosures[0].url, "https://x/a.mp3?a=1&b=2");
+    }
+
+    #[test]
+    fn escape_bare_ampersands_leaves_real_entities_alone() {
+        let out = escape_bare_ampersands(b"a&amp;b &lt;x&gt; &#39; &#x2F; c&d");
+        assert_eq!(out, b"a&amp;b &lt;x&gt; &#39; &#x2F; c&amp;d");
+    }
+
     #[test]
     fn the_rss_title_always_wins_and_episode_numbers_stay_metadata() {
         // Some feeds set a different itunes:title. The displayed title is always the RSS

src/main.rs

@@ -637,6 +637,7 @@ fn rm(ctx: &Ctx, config_path: &std::path::Path, feed: &str) -> Result<()> {
     cfg.save(config_path)?;
     // State and files stay: re-adding the feed should not re-download its back catalogue.
     println!("removed {feed}; downloads and history kept");
+    retire_group(ctx, feed)?;
     Ok(())
 }
 
@@ -842,6 +843,10 @@ async fn fetch(ctx: &Arc<Ctx>, only: Option<&str>, force: bool) -> Result<()> {
                 feed: id.clone(),
                 reason: "not modified".into(),
             }),
+            Ok(Outcome::Empty) => ctx.out.emit(Event::FeedSkip {
+                feed: id.clone(),
+                reason: "nothing yet".into(),
+            }),
             Ok(Outcome::Opml { added, removed, kept, total }) => {
                 ctx.out.emit(Event::FeedSkip {
                     feed: id.clone(),
@@ -919,6 +924,12 @@ pub fn subscriptions(ctx: &Ctx) -> Result<Vec<Sub>> {
             continue; // promoted to config at some point; that entry wins
         }
         let parent = cfg.feeds.get(&m.group_id);
+        if parent.is_none() {
+            // The OPML or Patreon feed this was derived from is no longer in config --
+            // removing it should have retired these rows too (see `retire_group`), but
+            // skip them here regardless so a row that slips through is never scanned.
+            continue;
+        }
         let base = parent
             .and_then(|p| p.folder.clone())
             .or_else(|| ctx.db.feed_summary(&m.group_id).ok().and_then(|s| s.title))
@@ -947,6 +958,22 @@ pub fn subscriptions(ctx: &Ctx) -> Result<Vec<Sub>> {
     Ok(out)
 }
 
+/// Retires every feed derived from `parent_id`, now that nothing subscribes to the OPML or
+/// Patreon feed that listed them: the same rule `sync_group` applies to one the list drops --
+/// removed if nothing was downloaded, orphaned and kept otherwise. Called once the parent
+/// itself is removed, since `subscriptions()` would otherwise keep scanning them under a
+/// fallback policy meant for a feed with no parent at all.
+pub fn retire_group(ctx: &Ctx, parent_id: &str) -> Result<()> {
+    for m in ctx.db.managed_feeds()?.into_iter().filter(|m| m.group_id == parent_id) {
+        if ctx.db.downloaded_count(&m.id).unwrap_or(1) > 0 {
+            ctx.db.set_orphaned(&m.id, true)?;
+        } else {
+            ctx.db.drop_managed(&m.id)?;
+        }
+    }
+    Ok(())
+}
+
 /// Seconds to wait before re-checking a feed.
 ///
 /// A per-feed schedule is an explicit instruction and wins outright. Without one, the
@@ -971,6 +998,9 @@ struct Scan {
 /// What a scan of one feed turned out to be.
 enum Outcome {
     NotModified,
+    /// A response with nothing in it -- the British Antarctic Survey answers a 202 with an
+    /// empty body when it has nothing new to publish. Not a parse failure; try again later.
+    Empty,
     Feed(Scan),
     /// The URL is a list of feeds rather than a feed: an OPML, or a Patreon creator's shows.
     Opml { added: Vec<String>, removed: usize, kept: usize, total: usize },
@@ -1033,6 +1063,11 @@ async fn scan_one(
         feed::Fetched::Body { bytes, etag, last_modified } => (bytes, etag, last_modified),
     };
 
+    if bytes.iter().all(u8::is_ascii_whitespace) {
+        ctx.db.touch_feed(id, &feed_cfg.url)?;
+        return Ok(Outcome::Empty);
+    }
+
     // A subscribed OPML is a list of feeds, not a feed. The original matched on a ".opml"
     // URL; sniffing the body also catches one served from a URL without that extension.
     if feed::is_opml(&bytes) {
@@ -1635,4 +1670,46 @@ mod tests {
         let p = merge_policy(&[sub(None, Some(false), None), sub(None, Some(true), None)], &feed(), 3);
         assert!(p.auto_download);
     }
+
+    fn test_ctx(cfg: config::Config) -> Ctx {
+        Ctx {
+            cfg: std::sync::RwLock::new(Arc::new(cfg)),
+            db: db::Db::memory().unwrap(),
+            client: reqwest::Client::new(),
+            out: Emitter::terminal(),
+            torrents: tokio::sync::OnceCell::new(),
+            torrent_slots: Arc::new(tokio::sync::Semaphore::new(2)),
+            config_path: PathBuf::new(),
+            detach_torrents: false,
+        }
+    }
+
+    #[test]
+    fn a_derived_feed_is_not_scanned_once_its_opml_leaves_config() {
+        // davewiner: the OPML subscription left config.toml, but its 922 derived rows
+        // stayed in the database and kept being scanned under the no-parent fallback.
+        let ctx = test_ctx(config::Config::default());
+        ctx.db.upsert_managed("child", "http://x/child.xml", "Child", "gone-opml").unwrap();
+        assert!(
+            subscriptions(&ctx).unwrap().iter().all(|s| s.id != "child"),
+            "a derived feed whose parent is gone from config must not be scanned"
+        );
+    }
+
+    #[test]
+    fn retiring_a_group_drops_what_was_never_downloaded_and_orphans_the_rest() {
+        let ctx = test_ctx(config::Config::default());
+        ctx.db.upsert_managed("empty", "http://x/empty.xml", "Empty", "parent").unwrap();
+        ctx.db.upsert_managed("has-file", "http://x/has-file.xml", "Has File", "parent").unwrap();
+        let enc = feed::Enclosure { url: "http://x/ep.mp3".into(), mime: None, length: None };
+        ctx.db.record_enclosure("has-file", "g1", &enc).unwrap();
+        ctx.db.mark_downloaded(&enc.url, std::path::Path::new("/downloads/ep.mp3"), 1).unwrap();
+
+        retire_group(&ctx, "parent").unwrap();
+
+        let managed = ctx.db.managed_feeds().unwrap();
+        assert!(!managed.iter().any(|m| m.id == "empty"), "nothing downloaded, so it is forgotten");
+        assert!(managed.iter().any(|m| m.id == "has-file"), "has a file on disk, so it is kept");
+        assert!(ctx.db.feed_summary("has-file").unwrap().orphaned, "and flagged as orphaned");
+    }
 }

src/web.rs

@@ -488,6 +488,9 @@ struct FeedRow {
     last_checked: Option<i64>,
     next_check: Option<i64>,
     last_error: Option<String>,
+    /// Set once `last_error` is a kind worth telling someone about and it has held for a
+    /// day -- a feed that fails once and reads fine an hour later (macmanx) never gets here.
+    failing: Option<FailingRow>,
     entries: i64,
     downloaded: i64,
     unread: i64,
@@ -495,6 +498,15 @@ struct FeedRow {
     subscribers: i64,
 }
 
+#[derive(Serialize)]
+struct FailingRow {
+    reason: &'static str,
+    new_url: Option<String>,
+}
+
+/// A day, in seconds: how long an error has to hold before the UI mentions it.
+const FLAG_AFTER_SECS: i64 = 86_400;
+
 async fn feeds(
     State(state): State<WebState>,
     user: crate::db::User,
@@ -558,6 +570,12 @@ async fn feeds(
             next_check: s
                 .last_checked
                 .map(|t| t + crate::due_after(&cfg, feed, st.ttl_mins) as i64),
+            failing: s
+                .error_since
+                .filter(|since| crate::db::now() - since >= FLAG_AFTER_SECS)
+                .and_then(|_| s.last_error.as_deref())
+                .and_then(crate::feed::explain_failure)
+                .map(|f| FailingRow { reason: f.reason, new_url: f.new_url }),
             last_error: s.last_error,
             entries: s.entries,
             downloaded: s.downloaded,
@@ -917,9 +935,13 @@ fn entry_page(
     let mut rows =
         db.entries_in(user_id, feed, filter, search, page.offset, page.limit.clamp(1, 200), &order)?;
     // Feed HTML is untrusted: it reaches the page only after ammonia has been through it.
+    // Every link opens in a new tab -- ammonia's default rel="noopener noreferrer" already
+    // keeps that safe -- so following one in show notes never navigates away from ipx.
+    let mut sanitizer = ammonia::Builder::new();
+    sanitizer.add_tag_attributes("a", &["target"]).set_tag_attribute_value("a", "target", "_blank");
     for row in &mut rows {
         if let Some(d) = &row.description {
-            row.description = Some(ammonia::clean(d));
+            row.description = Some(sanitizer.clean(d).to_string());
         }
     }
     let total = db.count_in(user_id, feed, filter, search)?;
@@ -1147,6 +1169,7 @@ async fn remove_feed(
     }
     cfg.save(&state.config_path)?;
     state.ctx.reload_cfg(&state.config_path)?;
+    crate::retire_group(&state.ctx, &id)?;
     Ok(StatusCode::NO_CONTENT)
 }
 

tests/ui/app.spec.js

@@ -359,7 +359,15 @@ test('a second person has their own feeds and their own read state', async ({ br
 
   // Sam subscribes to nothing yet, so sees nothing -- the admin's feeds are not theirs.
   await expect(page.locator('#feedlist')).toContainText('No feeds.');
-  await expect(page.locator('#prefs')).toBeHidden();      // not an admin
+  // Settings stays: Sam has their own subscriptions to export and import, and the
+  // schedule and quota are worth seeing even without a say in them. Only the log and the
+  // users screen -- and the server -- are an admin's alone.
+  await expect(page.locator('#prefs')).toBeVisible();
+  await page.locator('#prefs').click();
+  await expect(page.locator('#modalCard')).toContainText('Subscriptions');
+  await expect(page.locator('#gsave')).toBeHidden();
+  await expect(page.locator('#gusers')).toBeHidden();
+  await page.locator('#modalCard .cardacts .btn').first().click();
   // Hiding the button is not the guard; the server is.
   expect((await page.request.get('/api/users')).status()).toBe(403);
   await expect(page.locator('#logs')).toBeHidden();
@@ -790,7 +798,9 @@ test('play in the Files pane plays once, in the player bar', async ({ page }) =>
   await page.locator('.ep', { has: page.locator('.kind.here') }).first().click();
   await page.locator('#files [data-a="play"]').click();
   await expect(page.locator('#player')).toBeVisible();
-  await expect(page.locator('audio')).toHaveCount(1);   // the player bar's, and nothing else
+  // The player bar's element doubles as a <video> so a video file has somewhere to show its
+  // picture (see #audio's own comment), but there is still exactly one of it, and nothing else.
+  await expect(page.locator('#audio')).toHaveCount(1);
   await page.locator('#pclose').click();
 });
 

web/index.html

@@ -252,6 +252,8 @@ a.btn{text-decoration:none;color:inherit}
 .btn.danger:hover{border-color:var(--bad);color:var(--bad)}
 /* An icon in place of a word; the word is in its tooltip. */
 .btn.ico{padding:4px 9px;min-width:32px;font-size:14px;line-height:1.25;text-align:center}
+/* Inline in a sentence, next to a plain-word error explanation. */
+.btn.tiny{padding:2px 7px;font-size:11.5px;border-radius:6px;margin-left:2px}
 /* An icon (Font Awesome, embedded as SVG) in the button's own colour. */
 .i{display:inline-block;width:16px;height:16px;vertical-align:-3px;flex:none;fill:currentColor}
 /* A file's type as an icon, in place of the old DOWNLOADED / PENDING / audio chips: green once
@@ -337,6 +339,15 @@ body.playing .eq i:nth-child(3){animation-delay:-.6s}
   padding:9px 16px;box-shadow:0 -6px 24px rgba(6,10,16,.4);
 }
 #player.on{display:grid}
+/* #audio is a <video> playing double duty as the audio element (see its tag). Only a video
+   file needs to be seen, floated above the bar rather than laid into it, so an audio episode's
+   layout is unchanged. */
+#audio{display:none}
+body.has-video #audio{
+  display:block;position:fixed;z-index:45;right:16px;bottom:120px;
+  width:360px;max-width:calc(100vw - 32px);aspect-ratio:16/9;background:#000;
+  border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.5);
+}
 #pnow{display:flex;gap:11px;align-items:center;min-width:0;width:250px}
 #pnow .art{width:44px;height:44px;font-size:13px}
 #pnow .txt{min-width:0}
@@ -546,7 +557,7 @@ input[type=range]::-moz-range-thumb{width:12px;height:12px;border:0;border-radiu
        A phone hides the item group, which it has no table for. -->
   <div class="tgroup">
     <button id="addFeed" title="Add a feed" aria-label="Add a feed" data-icon="plus"></button>
-    <button id="tbRemove" title="Unsubscribe from this feed" aria-label="Unsubscribe from this feed" data-icon="minus" disabled></button>
+    <button id="tbRemove" title="Unsubscribe from this feed" aria-label="Unsubscribe from this feed" data-icon="circleMinus" disabled></button>
     <button id="scanAll" title="Check every feed for new items" aria-label="Check every feed for new items" data-icon="scan"></button>
   </div>
   <div class="tgroup item">
@@ -610,7 +621,10 @@ input[type=range]::-moz-range-thumb{width:12px;height:12px;border:0;border-radiu
 
 <div id="modal"><div class="card" id="modalCard"></div></div>
 <div id="toasts"></div>
-<audio id="audio" preload="metadata"></audio>
+<!-- One element for both: a <video> plays an audio-only file exactly like <audio> does (same
+     HTMLMediaElement API), and it is the only tag that can also show a picture. Hidden unless
+     the current file is video -- see body.has-video below. -->
+<video id="audio" preload="metadata" playsinline></video>
 
 <script>
 'use strict';
@@ -625,6 +639,7 @@ const fa=(box,body)=>`<svg class="i" viewBox="${box}" aria-hidden="true">${body}
 const ICON={
   plus:fa('0 0 448 512','<path fill="currentColor" d="M256 64c0-17.7-14.3-32-32-32s-32 14.3-32 32l0 160-160 0c-17.7 0-32 14.3-32 32s14.3 32 32 32l160 0 0 160c0 17.7 14.3 32 32 32s32-14.3 32-32l0-160 160 0c17.7 0 32-14.3 32-32s-14.3-32-32-32l-160 0 0-160z"/>'), // solid/plus
   minus:fa('0 0 448 512','<path fill="currentColor" d="M0 256c0-17.7 14.3-32 32-32l384 0c17.7 0 32 14.3 32 32s-14.3 32-32 32L32 288c-17.7 0-32-14.3-32-32z"/>'), // solid/minus
+  circleMinus:fa('0 0 512 512','<path fill="currentColor" d="M512 256A256 256 0 1 0 0 256a256 256 0 1 0 512 0zM184 232l144 0c13.3 0 24 10.7 24 24s-10.7 24-24 24l-144 0c-13.3 0-24-10.7-24-24s10.7-24 24-24z"/>'), // solid/circle-minus, for Unsubscribe
   play:fa('0 0 448 512','<path fill="currentColor" d="M91.2 36.9c-12.4-6.8-27.4-6.5-39.6 .7S32 57.9 32 72l0 368c0 14.1 7.5 27.2 19.6 34.4s27.2 7.5 39.6 .7l336-184c12.8-7 20.8-20.5 20.8-35.1s-8-28.1-20.8-35.1l-336-184z"/>'), // solid/play
   check:fa('0 0 448 512','<path fill="currentColor" d="M434.8 70.1c14.3 10.4 17.5 30.4 7.1 44.7l-256 352c-5.5 7.6-14 12.3-23.4 13.1s-18.5-2.7-25.1-9.3l-128-128c-12.5-12.5-12.5-32.8 0-45.3s32.8-12.5 45.3 0l101.5 101.5 234-321.7c10.4-14.3 30.4-17.5 44.7-7.1z"/>'), // solid/check
   checks:fa('0 0 384 512','<path fill="currentColor" d="M249.9 66.8c10.4-14.3 7.2-34.3-7.1-44.7s-34.3-7.2-44.7 7.1l-106 145.7-37.5-37.5c-12.5-12.5-32.8-12.5-45.3 0s-12.5 32.8 0 45.3l64 64c6.6 6.6 15.8 10 25.1 9.3s17.9-5.5 23.4-13.1l128-176zm128 136c10.4-14.3 7.2-34.3-7.1-44.7s-34.3-7.2-44.7 7.1l-170 233.7-69.5-69.5c-12.5-12.5-32.8-12.5-45.3 0s-12.5 32.8 0 45.3l96 96c6.6 6.6 15.8 10 25.1 9.3s17.9-5.5 23.4-13.1l192-264z"/>'), // solid/check-double
@@ -828,6 +843,9 @@ function renderFeeds(){
     const [unread,eps,saved]=mine.length
       ? [sum('unread'),sum('entries'),sum('downloaded')]
       : [f.unread,f.entries,f.downloaded];
+    // A group's own row has no error of its own worth mentioning if the OPML itself
+    // reads fine; it is failing when any feed inside it is.
+    const failing=mine.length ? mine.find(c=>c.failing)?.failing : f.failing;
     const el=document.createElement('div');
     el.className='feed'+(S.feed===f.id?' sel':'')+(depth?' child':'')+(kids?' group':'');
     el.tabIndex=0; el.dataset.id=f.id;
@@ -839,6 +857,7 @@ function renderFeeds(){
       `${mine.length?plural(mine.length,'feed'):plural(eps,'item')} · ${saved} downloaded`+
       `</small></div>`+
       (f.orphaned?'<span class="tag" title="No longer listed, kept because it has downloads">Gone</span>':'')+
+      (failing?`<span class="tag" style="color:var(--bad)" title="${esc(failing.reason)}">Error</span>`:'')+
       `<span class="badge${unread?'':' zero'}" title="${unread} unread">${unread>999?'999+':unread}</span>`;
     el.onclick=()=>{ selectFeed(f.id); nav(false); };
     if(kids) $('.chev',el).onclick=ev=>{ ev.stopPropagation(); toggleGroup(f.id); };
@@ -851,6 +870,21 @@ function selectFeed(id){
   renderFeeds(); renderFeed(); loadEntries();
 }
 
+/// A failing feed's error, in plain words with something to do about it, once `failing` is
+/// set (it has been failing for a day and is a kind worth naming -- see `explain_failure` in
+/// src/feed.rs). Anything else still shows the raw error, as before.
+function failBannerHTML(f){
+  if(f.failing) return `<div class="sub" style="color:var(--bad)">${esc(f.failing.reason)}
+    <button type="button" class="btn tiny" data-ffail="unsub">Unsubscribe</button>${
+    f.failing.new_url?` <button type="button" class="btn tiny" data-ffail="newurl">Use the new address</button>`:''}</div>`;
+  if(f.last_error) return `<div class="sub" style="color:var(--bad)">${esc(f.last_error)}</div>`;
+  return '';
+}
+function wireFailBanner(box,f){
+  const un=$('[data-ffail="unsub"]',box); if(un) un.onclick=()=>removeFeed(f);
+  const nu=$('[data-ffail="newurl"]',box); if(nu) nu.onclick=()=>settingsModal(f,f.failing.new_url);
+}
+
 /* ---------------- feed page ---------------- */
 function renderFeed(){
   const box=$('#content');
@@ -874,7 +908,7 @@ function renderFeed(){
         <div class="sub stat" title="Checked every ${everyText(f.every_mins)}${f.next_check?`, next ${due(f.next_check)}`:''}">${
           plural(f.entries,'item')}, ${f.downloaded} downloaded · checked ${ago(f.last_checked)}${
           f.subscribers>1?` · shared with ${f.subscribers-1} other ${f.subscribers===2?'person':'people'}`:''}</div>
-        ${f.last_error?`<div class="sub" style="color:var(--bad)">${esc(f.last_error)}</div>`:''}
+        ${failBannerHTML(f)}
         ${f.orphaned?`<div class="sub" style="color:var(--warn)">This feed is no longer listed in its
           OPML subscription. It was kept rather than removed because it has downloaded items.</div>`:''}
         ${f.group?`<div class="sub">From the OPML subscription <b>${esc(f.group)}</b></div>`:''}
@@ -884,7 +918,7 @@ function renderFeed(){
         <button class="btn ico" data-a="dl" title="Download latest…" aria-label="Download latest">${ICON.download}</button>
         <button class="btn ico" data-a="read" title="Mark all read" aria-label="Mark all read">${ICON.checks}</button>
         <button class="btn ico" data-a="settings" title="Settings" aria-label="Settings">${ICON.settings}</button>
-        <button class="btn ico danger" data-a="rm" title="Unsubscribe" aria-label="Unsubscribe">${ICON.minus}</button>
+        <button class="btn ico danger" data-a="rm" title="Unsubscribe" aria-label="Unsubscribe">${ICON.circleMinus}</button>
       </div>
     </div>` : `
     <div class="fhead slim">
@@ -919,6 +953,7 @@ function renderFeed(){
 
   $$('#content .acts .btn').forEach(b=>b.onclick=()=>f?feedAction(b.dataset.a,f):allAction(b.dataset.a));
   $$('#content .tabs button').forEach(b=>b.onclick=()=>{S.filter=b.dataset.f;S.offset=0;renderFeed();loadEntries()});
+  if(f) wireFailBanner(box,f);
 }
 
 /// The item table's headings, each a button that sorts by its column. The first click goes the
@@ -957,7 +992,7 @@ function renderGroup(f,kids){
         <h2>${esc(f.title||f.id)}</h2>
         <div class="sub stat" title="Checked every ${everyText(f.every_mins)}">${isPatreon(f)?'Patreon creator':'OPML subscription'}
           · ${plural(kids.length,'feed')}, ${unread} unread, ${saved} downloaded · checked ${ago(f.last_checked)}</div>
-        ${f.last_error?`<div class="sub" style="color:var(--bad)">${esc(f.last_error)}</div>`:''}
+        ${failBannerHTML(f)}
         ${gone?`<div class="sub" style="color:var(--warn)">${gone} feed${gone===1?' is':'s are'} no longer
           listed but kept because ${gone===1?'it has':'they have'} downloads.</div>`:''}
       </div>
@@ -965,7 +1000,7 @@ function renderGroup(f,kids){
         <button class="btn ico primary" data-a="scan" title="Re-read the OPML now" aria-label="Re-read the OPML now">${ICON.scan}</button>
         <button class="btn ico" data-a="read" title="Mark all read" aria-label="Mark all read">${ICON.checks}</button>
         <button class="btn ico" data-a="settings" title="Settings" aria-label="Settings">${ICON.settings}</button>
-        <button class="btn ico danger" data-a="rm" title="Unsubscribe" aria-label="Unsubscribe">${ICON.minus}</button>
+        <button class="btn ico danger" data-a="rm" title="Unsubscribe" aria-label="Unsubscribe">${ICON.circleMinus}</button>
       </div>
     </div>
     <div class="toolbar">
@@ -974,6 +1009,7 @@ function renderGroup(f,kids){
     </div>
     <div class="childlist" id="kidlist"></div>`;
   $$('#content .acts .btn').forEach(b=>b.onclick=()=>feedAction(b.dataset.a,f));
+  wireFailBanner($('#content'),f);
   const draw=()=>{
     const q=($('#kidSearch').value||'').trim().toLowerCase();
     const box=$('#kidlist'); box.innerHTML='';
@@ -985,8 +1021,10 @@ function renderGroup(f,kids){
       el.innerHTML = artHTML(c.image,c.title||c.id)+
         `<div class="txt"><b>${esc(c.title||c.id)}</b>`+
         `<small class="meta">${plural(c.entries,'item')} · ${c.downloaded} downloaded`+
-        (c.last_error?` · <span style="color:var(--bad)">error</span>`:'')+`</small></div>`+
+        (c.failing?` · <span style="color:var(--bad)" title="${esc(c.failing.reason)}">error</span>`
+          :c.last_error?` · <span style="color:var(--bad)">error</span>`:'')+`</small></div>`+
         (c.orphaned?'<span class="tag">Gone</span>':'')+
+        (c.failing?`<span class="tag" style="color:var(--bad)" title="${esc(c.failing.reason)}">Error</span>`:'')+
         `<span class="badge${c.unread?'':' zero'}">${c.unread}</span>`;
       el.onclick=()=>selectFeed(c.id);
       box.appendChild(el);
@@ -1027,7 +1065,15 @@ async function loadEntries(append){
   const r=await api(S.feed===':all' ? `/api/entries?${p}`
     : `/api/feeds/${encodeURIComponent(S.feed)}/entries?${p}`);
   S.total=r.total;
-  S.entries = append ? S.entries.concat(r.entries) : r.entries;
+  let entries = append ? S.entries.concat(r.entries) : r.entries;
+  // A background scan finishing refreshes the list from the server, which -- on the Unread
+  // tab -- would drop the item you have open the moment reading it took it off the filter.
+  // Keep it until you pick a different one; the next refresh after that no longer protects it.
+  if(!append && S.sel && !entries.some(e=>e.guid===S.sel)){
+    const open=S.entries.find(e=>e.guid===S.sel);
+    if(open) entries=[open,...entries];
+  }
+  S.entries = entries;
   renderEntries();
 }
 function renderEntries(){
@@ -1348,6 +1394,7 @@ function play(e,enc=e.enclosures.find(isPlayable)){
   const resuming = player.guid===e.guid && player.enc===enc.id;
   if(!resuming){
     player.guid=e.guid; player.feed=e.feed_id; player.entry=e; player.enc=enc.id;
+    document.body.classList.toggle('has-video', kindOf(enc)==='video');
     audio.src=`/media/${enc.id}`;
     audio.currentTime=0;
     if(e.position>5) audio.addEventListener('loadedmetadata',()=>{audio.currentTime=e.position},{once:true});
@@ -1402,7 +1449,7 @@ $('#pfwd').onclick=()=>audio.currentTime+=30;
 $('#seek').oninput=e=>{const d=audio.duration;if(d)audio.currentTime=d*e.target.value/1000};
 $('#rate').onchange=e=>{audio.playbackRate=+e.target.value;localStorage.setItem('ipx.rate',e.target.value)};
 $('#vol').oninput=e=>{audio.volume=e.target.value/100;localStorage.setItem('ipx.vol',e.target.value)};
-$('#pclose').onclick=()=>{savePos();audio.pause();audio.removeAttribute('src');player.guid=null;$('#player').classList.remove('on');renderEntries()};
+$('#pclose').onclick=()=>{savePos();audio.pause();audio.removeAttribute('src');player.guid=null;$('#player').classList.remove('on');document.body.classList.remove('has-video');renderEntries()};
 (function restore(){
   const r=localStorage.getItem('ipx.rate'), v=localStorage.getItem('ipx.vol');
   if(r){$('#rate').value=r;audio.playbackRate=+r}
@@ -1566,7 +1613,7 @@ async function listFeeds(url){
       `<small class="meta">${p.subscribers} subscriber${p.subscribers===1?'':'s'}</small></div>`+
       // Green, as a downloaded file is: it is already yours. Plus, beside it, is the way to get one.
       (p.subscribed?`<span class="subbed" title="Subscribed: click to open it" aria-label="Subscribed">${ICON.subbed}</span>`
-        :`<button class="btn ico" data-a="sub" title="Subscribe" aria-label="Subscribe">${ICON.plus}</button>`);
+        :`<button class="btn ico" data-a="sub" title="Subscribe" aria-label="Subscribe">${ICON.subbed}</button>`);
     // Yours already: the row opens it instead.
     if(p.subscribed){ el.onclick=()=>{ closeModal(); selectFeed(p.id); }; box.appendChild(el); continue; }
     $('[data-a="sub"]',el).onclick=async()=>{
@@ -1645,18 +1692,26 @@ function due(ts){
   return 'in '+Math.round(d/86400)+'d';
 }
 
+/// Global settings. GET /api/settings is open to anyone signed in; only the PATCH, and the
+/// Users screen behind it, are the operator's alone (the server refuses both from anyone
+/// else). A non-admin gets the same modal minus those two parts, not no settings at all --
+/// Export/Import are theirs regardless, and seeing the schedule and quota explains why a
+/// feed is polled when it is.
 async function prefsModal(){
   const g = await api('/api/settings');
   const gs = splitEvery(g.every_mins);
+  const admin = !!(S.me&&S.me.admin);
   openModal(`<h3>Settings</h3>
     <div class="field"><label>Check feeds every</label>
-      <div class="inline">
+      ${admin?`<div class="inline">
         <input type="number" id="gnum" min="1" max="999" value="${gs.n}">
         <select id="gunit">${unitOptions(gs.u)}</select>
       </div>
       <span class="hint">Applies to every feed that does not set its own. A feed's suggested
-      interval (its <b>ttl</b>) is still honoured when it asks to be polled less often.</span></div>
-    <div class="field"><label>Max new downloads per scan, per feed</label>
+      interval (its <b>ttl</b>) is still honoured when it asks to be polled less often.</span>`
+      :`<span class="hint">${everyText(g.every_mins)}, for every feed that does not set its
+      own. Only an admin changes this.</span>`}</div>
+    ${admin?`<div class="field"><label>Max new downloads per scan, per feed</label>
       <input type="number" id="gmax" min="0" max="999" value="${g.max_new_per_check}">
       <span class="hint">Applies to any feed that does not set its own — including every feed
       inside an OPML subscription. <b>0 means unlimited</b>, which will pull a whole back
@@ -1671,7 +1726,7 @@ async function prefsModal(){
       <span class="hint">Over this, the oldest played items are deleted first. Kept
       items are never touched.</span></div>
     <div class="field"><label>Delete items older than (days, 0 = keep)</label>
-      <input type="number" id="gage" min="0" value="${g.max_age_days}"></div>
+      <input type="number" id="gage" min="0" value="${g.max_age_days}"></div>`:''}
     <div class="field"><label>Download folder</label>
       <span class="hint" style="overflow-wrap:anywhere">${esc(g.download_dir)}</span></div>
     <div class="field"><label>Subscriptions</label>
@@ -1682,12 +1737,13 @@ async function prefsModal(){
       </div>
       <span class="hint">Export saves your subscriptions as OPML for another podcast app. Import
       subscribes you to every feed in one.</span></div>
-    <div class="field"><label>Users</label>
+    ${admin?`<div class="field"><label>Users</label>
       <div class="inline"><button class="btn ico" id="gusers" title="Manage users…" aria-label="Manage users">${ICON.users}</button></div>
-      <span class="hint">Add and remove the people who can sign in, and choose who is an admin.</span></div>
-    <div class="cardacts"><button class="btn ico" onclick="closeModal()" title="Cancel" aria-label="Cancel">${ICON.close}</button>
-      <button class="btn ico primary" id="gsave" title="Save" aria-label="Save">${ICON.check}</button></div>`);
+      <span class="hint">Add and remove the people who can sign in, and choose who is an admin.</span></div>`:''}
+    <div class="cardacts"><button class="btn ico" onclick="closeModal()" title="${admin?'Cancel':'Close'}" aria-label="${admin?'Cancel':'Close'}">${ICON.close}</button>
+      ${admin?`<button class="btn ico primary" id="gsave" title="Save" aria-label="Save">${ICON.check}</button>`:''}</div>`);
   $('#gopml').onclick=opmlModal;
+  if(!admin) return;
   $('#gusers').onclick=usersModal;
   $('#gsave').onclick=async()=>{
     try{
@@ -1751,7 +1807,7 @@ async function usersModal(){
   };
 }
 
-function settingsModal(f){
+function settingsModal(f,newUrl){
   const isGroup = S.feeds.some(c=>c.group===f.id);
   openModal(`<h3>${esc(f.title||f.id)}</h3>
     ${isGroup?`<p class="hint" style="margin:-6px 0 12px">This is ${isPatreon(f)?'a Patreon creator':'an OPML subscription'}. These
@@ -1772,7 +1828,7 @@ function settingsModal(f){
     <label class="check"><input type="checkbox" id="sexp" ${f.allow_explicit?'checked':''}> Allow items marked explicit</label>
     <div class="field"><label>Feed URL</label>
       <div class="inline">
-        <input type="text" id="surl" value="${esc(f.url)}" spellcheck="false" ${S.me&&S.me.admin?'':'readonly'}>
+        <input type="text" id="surl" value="${esc(newUrl||f.url)}" spellcheck="false" ${S.me&&S.me.admin?'':'readonly'}>
         <button type="button" class="btn ico" id="scopy" title="Copy the URL" aria-label="Copy the URL">${ICON.copy}</button>
       </div>
       <span class="hint">${S.me&&S.me.admin
@@ -1829,7 +1885,7 @@ function removeFeed(f){
     reading it keeps it, along with their own read state.
     Downloaded files and history are kept, so re-adding it will not pull the back catalogue again.</p>
     <div class="cardacts"><button class="btn ico" onclick="closeModal()" title="Cancel" aria-label="Cancel">${ICON.close}</button>
-      <button class="btn ico danger" id="rgo" title="Unsubscribe" aria-label="Unsubscribe">${ICON.minus}</button></div>`);
+      <button class="btn ico danger" id="rgo" title="Unsubscribe" aria-label="Unsubscribe">${ICON.circleMinus}</button></div>`);
   $('#rgo').onclick=async()=>{
     await api(`/api/feeds/${encodeURIComponent(f.id)}`,{method:'DELETE'});
     closeModal(); toast('Unsubscribed'); S.feed=null;
@@ -1875,9 +1931,10 @@ $('#signout').onclick=async()=>{ await api('/api/logout',{method:'POST'}); locat
 api('/api/me').then(u=>{
   S.me=u;
   $('#who').textContent=u.name+(u.admin?' · admin':'');
-  // Scanning, quotas, accounts and the log are the operator's business. The server refuses
-  // them too; hiding the buttons just stops offering what would fail.
-  if(!u.admin) $('#admintools').hidden=true;
+  // The log names every account and every failed sign-in; that alone is the operator's
+  // business, and the server refuses it from anyone else. Settings stays -- it opens the
+  // same modal for everyone, just without the admin-only fields (see prefsModal).
+  if(!u.admin) $('#logs').hidden=true;
 }).catch(()=>{});
 $('#logs').onclick=logsModal;
 $('#feedFilter').oninput=renderFeeds;