forge-notify: show unseen inline review comments in PR wakes

docs/integrations/forge.md

@@ -298,6 +298,25 @@ A review submitted with **no body** renders `reviewed by: <author>` in
 place of the `<author>: <body>` line — deliberately worded to not collide
 with the meta-suffix `reviewer:` line (requested reviewers, below).
 
+### Inline review comments
+
+A review's line comments belong to neither the review body nor the
+`latest_comment_url` (a review with only inline comments has no such url
+and otherwise lands as a bare `activity on PR`). So every PR wake fetches
+the PR's reviews (`/pulls/N/reviews`, up to four pages of 50) and appends
+the inline comments of those that are new to the agent as an
+`inline review comments:` block, one `author [path:line]: text` entry
+each (`[path]` when Forgejo dropped the position because the line left the
+diff). A review counts as new when it was submitted strictly after the
+thread's previously delivered `updated_at` (all of them without a
+baseline, and any with no submit time, so nothing is hidden), is not the
+agent's own, is not a `PENDING` draft, and has `comments_count > 0`. Only
+the newest 5 such reviews are fetched, at most 10 comments are shown
+(`(+N more ...)` for the rest), and each excerpt is truncated to 300 bytes
+and heading-escaped like a body. Best effort: a failed fetch yields less
+text, never a dropped wake. Cost: one reviews fetch per PR wake, plus one
+per new commented review.
+
 ### Merge/close vs a later comment
 
 A notification carrying a `latest_comment_url` normally takes the comment

hive-forge-notify/src/notify.rs

@@ -361,7 +361,7 @@ async fn format_notification<S: Source>(
     // comment stays on the comment path (see `state_change_is_current`).
     let is_fresh_state_change =
         state_change_is_current(&notif.state, notif.thread.updated_at, meta.subject.as_ref());
-    if has_comment && !is_fresh_state_change {
+    let formatted = if has_comment && !is_fresh_state_change {
         let enrichment = CommentEnrichment {
             subject_api_url,
             prev_updated_at,
@@ -377,38 +377,16 @@ async fn format_notification<S: Source>(
         )
         .await
     } else {
-        // State-change path (merge/close/new/activity). A just-merged or
+        let (comment_tail, earlier_updates) = state_change_extras(
-        // closed subject keeps its pre-merge last comment on
-        // `latest_comment_url`, so `has_comment` is often true here. When
-        // that comment was genuinely posted AFTER the close — a comment
-        // racing the merge inside the state-change tolerance window — append
-        // it so it isn't lost (best of both worlds; see
-        // `docs/integrations/forge.md::Merge racing a comment`). The ordinary pre-merge
-        // last comment (created before `closed_at`) is left off.
-        let comment_tail = if has_comment {
-            fresh_post_close_comment_tail(
             client,
             source,
-                comment_api_url,
+            has_comment.then_some(comment_api_url),
-                meta.subject.as_ref(),
+            &meta,
+            subject_api_url,
+            prev_updated_at.zip(notif.thread.updated_at),
             own_login,
         )
-            .await
+        .await;
-        } else {
-            None
-        };
-        // Same widened marker as the comment path (see that branch's
-        // comment), pre-fetched here because `format_state_change_notification`
-        // stays sync — mirrors how `comment_tail` above is already fetched
-        // before the sync formatter is called, same reason.
-        let earlier_updates = if let (Some(since), Some(current)) =
-            (prev_updated_at, notif.thread.updated_at)
-        {
-            fetch_unseen_earlier_events(client, source, subject_api_url, since, current, own_login)
-                .await
-        } else {
-            None
-        };
         format_state_change_notification(
             notif.thread.updated_at,
             &notif.state,
@@ -417,7 +395,57 @@ async fn format_notification<S: Source>(
             comment_tail,
             earlier_updates,
         )
+    };
+    // A review's inline comments ride neither the review body nor the
+    // comment url (a bodiless review has no `latest_comment_url` at all),
+    // so every PR wake gets the unseen ones appended.
+    let mut out = formatted?;
+    if is_pr {
+        out.push_str(
+            &fetch_inline_review_tail(client, source, subject_api_url, prev_updated_at, own_login)
+                .await,
+        );
     }
+    Some(out)
+}
+
+/// The two pre-fetches the sync state-change formatter needs.
+///
+/// State-change path (merge/close/new/activity). A just-merged or
+/// closed subject keeps its pre-merge last comment on
+/// `latest_comment_url`, so a comment url is often present here. When
+/// that comment was genuinely posted AFTER the close - a comment
+/// racing the merge inside the state-change tolerance window - it is
+/// appended so it isn't lost (best of both worlds; see
+/// `docs/integrations/forge.md::Merge racing a comment`). The ordinary
+/// pre-merge last comment (created before `closed_at`) is left off.
+/// The earlier-updates count is the same widened marker as the comment
+/// path; both are fetched here because `format_state_change_notification`
+/// stays sync.
+async fn state_change_extras<S: Source>(
+    client: &reqwest::Client,
+    source: &S,
+    comment_api_url: Option<&str>,
+    meta: &NotifMeta<'_>,
+    subject_api_url: &str,
+    since_and_current: Option<(&str, OffsetDateTime)>,
+    own_login: &str,
+) -> (Option<String>, Option<usize>) {
+    let comment_tail = match comment_api_url {
+        Some(url) => {
+            fresh_post_close_comment_tail(client, source, url, meta.subject.as_ref(), own_login)
+                .await
+        }
+        None => None,
+    };
+    let earlier_updates = match since_and_current {
+        Some((since, current)) => {
+            fetch_unseen_earlier_events(client, source, subject_api_url, since, current, own_login)
+                .await
+        }
+        None => None,
+    };
+    (comment_tail, earlier_updates)
 }
 
 /// Shared notification metadata extracted from the polled notification.
@@ -872,6 +900,136 @@ async fn fresh_post_close_comment_tail<S: Source>(
     Some(format!("\n\ncomment by {author}: {excerpt}{mentions}"))
 }
 
+/// Inline review comments rendered in one wake; the rest become a count.
+const INLINE_COMMENTS_MAX: usize = 10;
+/// Per-comment excerpt cap. Under [`BODY_TRUNCATE`]: one review carries many.
+const INLINE_COMMENT_TRUNCATE: usize = 300;
+/// Reviews whose inline comments are fetched for one wake (the newest).
+const INLINE_REVIEWS_MAX: usize = 5;
+/// Page size and page cap for the reviews list, so a long-lived PR's
+/// newest reviews are not stranded behind the first page.
+const REVIEWS_PAGE_SIZE: usize = 50;
+const REVIEWS_PAGES_MAX: usize = 4;
+
+/// The PR's reviews endpoint from the notification subject URL. Forgejo
+/// hands out the *issues* URL for a PR (`.../issues/N`); its reviews live
+/// under `.../pulls/N/reviews`. `None` for any other shape.
+fn reviews_api_url(subject_api_url: &str) -> Option<String> {
+    let (head, number) = subject_api_url.rsplit_once("/issues/")?;
+    Some(format!("{head}/pulls/{number}/reviews"))
+}
+
+/// `(review id, author)` of the reviews in `reviews` (the raw reviews
+/// list, oldest first) that carry inline comments the agent has not been
+/// woken for: submitted strictly after `since` (all of them without a
+/// baseline, and any whose time is missing, so nothing is hidden), not
+/// the agent's own, and not an unsubmitted `PENDING` draft. Newest
+/// [`INLINE_REVIEWS_MAX`] only.
+fn unseen_inline_reviews(
+    reviews: &[serde_json::Value],
+    since: Option<OffsetDateTime>,
+    own_login: &str,
+) -> Vec<(i64, String)> {
+    let mut unseen: Vec<(i64, String)> = reviews
+        .iter()
+        .filter(|r| r["comments_count"].as_i64().unwrap_or(0) > 0)
+        .filter(|r| r["state"].as_str() != Some("PENDING"))
+        .filter(|r| {
+            let author = r["user"]["login"].as_str().unwrap_or("");
+            own_login.is_empty() || author != own_login
+        })
+        .filter(
+            |r| match (since, r["submitted_at"].as_str().and_then(parse_rfc3339)) {
+                (Some(since), Some(at)) => at > since,
+                _ => true,
+            },
+        )
+        .filter_map(|r| {
+            let id = r["id"].as_i64()?;
+            Some((id, r["user"]["login"].as_str().unwrap_or("?").to_owned()))
+        })
+        .collect();
+    let skip = unseen.len().saturating_sub(INLINE_REVIEWS_MAX);
+    unseen.drain(..skip);
+    unseen
+}
+
+/// The `inline review comments:` block for the wake: one
+/// `author [path:line]: text` entry per comment (`[path]` when Forgejo
+/// dropped the position because the line left the diff), each excerpt
+/// truncated + heading-escaped like a body, at most
+/// [`INLINE_COMMENTS_MAX`] entries and a count for the rest. Empty when
+/// there is nothing to show.
+fn render_inline_comments(groups: &[(String, Vec<serde_json::Value>)]) -> String {
+    let total: usize = groups.iter().map(|(_, c)| c.len()).sum();
+    if total == 0 {
+        return String::new();
+    }
+    let mut out = String::from("\n\ninline review comments:");
+    let entries = groups
+        .iter()
+        .flat_map(|(author, comments)| comments.iter().map(move |c| (author, c)));
+    for (author, c) in entries.take(INLINE_COMMENTS_MAX) {
+        let path = c["path"].as_str().unwrap_or("?");
+        let body = escape_md_headings(&truncate(
+            c["body"].as_str().unwrap_or("").trim(),
+            INLINE_COMMENT_TRUNCATE,
+        ))
+        .replace('\n', "\n    ");
+        match c["position"].as_u64().filter(|&line| line > 0) {
+            Some(line) => write!(out, "\n  {author} [{path}:{line}]: {body}").ok(),
+            None => write!(out, "\n  {author} [{path}]: {body}").ok(),
+        };
+    }
+    if total > INLINE_COMMENTS_MAX {
+        write!(
+            out,
+            "\n  (+{} more - `hive-forge pr reviews` lists them all)",
+            total - INLINE_COMMENTS_MAX
+        )
+        .ok();
+    }
+    out
+}
+
+/// Fetch + render the unseen inline review comments of a PR (see
+/// [`unseen_inline_reviews`]). Best effort like every other enrichment:
+/// any failed fetch just yields less (or no) text, never a dropped wake.
+async fn fetch_inline_review_tail<S: Source>(
+    client: &reqwest::Client,
+    source: &S,
+    subject_api_url: &str,
+    prev_updated_at: Option<&str>,
+    own_login: &str,
+) -> String {
+    let Some(reviews_url) = reviews_api_url(subject_api_url) else {
+        return String::new();
+    };
+    let mut reviews: Vec<serde_json::Value> = Vec::new();
+    for page in 1..=REVIEWS_PAGES_MAX {
+        let url = format!("{reviews_url}?page={page}&limit={REVIEWS_PAGE_SIZE}");
+        let Some(batch) = fetch_json(client, &url, source).await else {
+            break;
+        };
+        let Some(batch) = batch.as_array() else {
+            break;
+        };
+        reviews.extend(batch.iter().cloned());
+        if batch.len() < REVIEWS_PAGE_SIZE {
+            break;
+        }
+    }
+    let since = prev_updated_at.and_then(parse_rfc3339);
+    let mut groups = Vec::new();
+    for (id, author) in unseen_inline_reviews(&reviews, since, own_login) {
+        let comments = fetch_json(client, &format!("{reviews_url}/{id}/comments"), source).await;
+        if let Some(comments) = comments.as_ref().and_then(serde_json::Value::as_array) {
+            groups.push((author, comments.clone()));
+        }
+    }
+    render_inline_comments(&groups)
+}
+
 /// Parse an RFC 3339 timestamp as Forgejo emits them
 /// (`2026-06-13T11:18:42+02:00` or `...Z`, optionally with fractional
 /// seconds). Returns `None` on any shape `time` doesn't recognise so
@@ -1824,4 +1982,109 @@ mod tests {
             2
         );
     }
+
+    fn review(id: i64, user: &str, state: &str, n: i64, at: &str) -> serde_json::Value {
+        serde_json::json!({
+            "id": id,
+            "user": {"login": user},
+            "state": state,
+            "comments_count": n,
+            "submitted_at": at,
+        })
+    }
+
+    #[test]
+    fn reviews_api_url_swaps_issues_for_pulls() {
+        let subject = "/api/v1/repos/o/r/issues/42"; // lint:allow test input, not a tracker reference
+        assert_eq!(
+            reviews_api_url(subject).as_deref(),
+            Some("/api/v1/repos/o/r/pulls/42/reviews"),
+        );
+        assert_eq!(reviews_api_url("/api/v1/repos/o/r"), None);
+    }
+
+    #[test]
+    fn unseen_inline_reviews_keeps_only_new_foreign_submitted_commented() {
+        let since = parse_rfc3339("2026-10-30T10:00:00Z");
+        let reviews = vec![
+            review(1, "argus", "COMMENT", 2, "2026-10-30T09:00:00Z"), // seen
+            review(2, "argus", "COMMENT", 0, "2026-10-30T11:00:00Z"), // no inline
+            review(3, "me", "COMMENT", 3, "2026-10-30T11:00:00Z"),    // own
+            review(4, "argus", "PENDING", 1, "2026-10-30T11:00:00Z"), // draft
+            review(5, "argus", "REQUEST_CHANGES", 1, "2026-10-30T12:00:00Z"),
+        ];
+        assert_eq!(
+            unseen_inline_reviews(&reviews, since, "me"),
+            vec![(5, "argus".to_owned())]
+        );
+    }
+
+    #[test]
+    fn unseen_inline_reviews_without_baseline_or_time_hides_nothing() {
+        let reviews = vec![
+            review(1, "argus", "COMMENT", 1, "2026-10-30T09:00:00Z"),
+            serde_json::json!({"id": 2, "user": {"login": "argus"}, "state": "COMMENT", "comments_count": 1}),
+        ];
+        let ids: Vec<i64> = unseen_inline_reviews(&reviews, None, "me")
+            .into_iter()
+            .map(|(id, _)| id)
+            .collect();
+        assert_eq!(ids, vec![1, 2]);
+        // A missing submit time is shown even against a baseline.
+        let since = parse_rfc3339("2026-10-30T10:00:00Z");
+        let ids: Vec<i64> = unseen_inline_reviews(&reviews, since, "me")
+            .into_iter()
+            .map(|(id, _)| id)
+            .collect();
+        assert_eq!(ids, vec![2]);
+    }
+
+    #[test]
+    fn unseen_inline_reviews_keeps_the_newest_few() {
+        let reviews: Vec<_> = (1..=8)
+            .map(|i| review(i, "argus", "COMMENT", 1, "2026-10-30T11:00:00Z"))
+            .collect();
+        let ids: Vec<i64> = unseen_inline_reviews(&reviews, None, "me")
+            .into_iter()
+            .map(|(id, _)| id)
+            .collect();
+        assert_eq!(ids, vec![4, 5, 6, 7, 8]);
+    }
+
+    #[test]
+    fn render_inline_comments_formats_path_line_and_fallback() {
+        let groups = vec![(
+            "argus".to_owned(),
+            vec![
+                serde_json::json!({"path": "src/a.rs", "position": 42, "body": "off by one"}),
+                serde_json::json!({"path": "src/b.rs", "position": 0, "body": "line left the diff"}),
+                serde_json::json!({"path": "src/c.rs", "body": "# heading\nsecond line"}),
+            ],
+        )];
+        assert_eq!(
+            render_inline_comments(&groups),
+            "\n\ninline review comments:\
+             \n  argus [src/a.rs:42]: off by one\
+             \n  argus [src/b.rs]: line left the diff\
+             \n  argus [src/c.rs]: \\# heading\n    second line"
+        );
+    }
+
+    #[test]
+    fn render_inline_comments_empty_is_empty() {
+        assert_eq!(render_inline_comments(&[]), "");
+        assert_eq!(render_inline_comments(&[("argus".to_owned(), vec![])]), "");
+    }
+
+    #[test]
+    fn render_inline_comments_caps_entries_and_excerpts() {
+        let comments: Vec<_> = (0..13)
+            .map(|i| serde_json::json!({"path": "f.rs", "position": i + 1, "body": "x".repeat(1000)}))
+            .collect();
+        let out = render_inline_comments(&[("argus".to_owned(), comments)]);
+        assert_eq!(out.matches("argus [f.rs:").count(), INLINE_COMMENTS_MAX);
+        assert!(out.ends_with("(+3 more - `hive-forge pr reviews` lists them all)"));
+        // Each excerpt is cut, not the full 1000 chars.
+        assert!(out.len() < INLINE_COMMENTS_MAX * (INLINE_COMMENT_TRUNCATE + 60) + 200);
+    }
 }