You are a constitutional council ranking individual git commits for ownership allocation.

Compare these two commits. Decide which contributed more lasting value to the project.

Judge substance, not spectacle:
- Prefer correct, lasting design and real bugfixes over churn, formatting, renames, or generated noise.
- Prefer clarity and necessity over sheer line count. A small precise change can beat a large diffuse one.
- Do not favor a side merely because its patch is longer or noisier.
- Weight what the change does for the project, not the contributor's name.

Return ONLY a JSON object: {"winner": "A" or "B", "ratio": "N:M", "explanation": "..."}
The explanation must cite concrete differences in the patches (1-3 sentences).

Side A — contributor: tommy-mor
Side A — commit message:
[993d359c] Fix Reddit children import wiring and unranked child labels.

Listing imports attach posts directly under the subreddit without ensure_path
pulling comment-path segments in, and the ranking panel shows imported titles.
Update integration tests for JS SSE morphs and children fetch.

Co-authored-by: Cursor <cursoragent@cursor.com>

Side A — unified diff (full patch):
diff --git a/server/src/api/ui_html.rs b/server/src/api/ui_html.rs
index d1defd28242fd2ca3b886adc91a7070bef75e653..e649a7d192feade465e19ce6187a829f6ec74372 100644
--- a/server/src/api/ui_html.rs
+++ b/server/src/api/ui_html.rs
@@ -58,7 +58,7 @@ pub async fn post_ui_html(
             let tree = state.tree.read().await;
             let empty = crate::reducer::NodeState::default();
             let node = tree.get(&parent).unwrap_or(&empty);
-            let panel = ranking_panel(&parent, node);
+            let panel = ranking_panel(&parent, node, &tree);
             JsBuilder::new()
                 .morph_selector("#ranking-panel", panel)
                 .into_response()
diff --git a/server/src/fetch/mod.rs b/server/src/fetch/mod.rs
index 0177bb161cea1b72a100b52efdfc5e710271c9eb..35f968c21c69ca557bab7951413e3cfbbccfebfd 100644
--- a/server/src/fetch/mod.rs
+++ b/server/src/fetch/mod.rs
@@ -107,7 +107,7 @@ pub fn fetch_entity_stream(
                 let mut b = JsBuilder::new()
                     .morph_selector("#entity-section", html::entity_section(&id, node, false));
                 if kind == FetchKind::Children {
-                    b = b.morph_selector("#ranking-panel", ranking_panel(&id, node));
+                    b = b.morph_selector("#ranking-panel", ranking_panel(&id, node, &tree));
                 }
                 yield Ok(js_event(b.build()));
             }
diff --git a/server/src/html/mod.rs b/server/src/html/mod.rs
index 27ce9118c73ec5643e04363ab1a36cf5da6101bf..e88cc43ddc9d8100f7994be6f5960ec4d8f22c55 100644
--- a/server/src/html/mod.rs
+++ b/server/src/html/mod.rs
@@ -15,7 +15,7 @@ use crate::{
     ranking::{
         connected_components_from_voted_pairs, ranked_items_subset, RankedItem, MAX_ITERS, TOL,
     },
-    reducer::NodeState,
+    reducer::{GlobalTree, NodeState},
     state::AppState,
     ui_action::UI_RPC_FIELD,
 };
@@ -182,8 +182,15 @@ fn display_label(id: &ItemId) -> String {
         .to_string()
 }
 
+fn child_label(tree: &GlobalTree, id: &ItemId) -> String {
+    tree.get(id)
+        .and_then(|n| n.data.as_ref())
+        .map(|d| d.title.clone())
+        .unwrap_or_else(|| display_label(id))
+}
+
 /// Plain (unscored) list of children that have no votes yet.
-fn unranked_list(label: &str, items: &[ItemId]) -> Markup {
+fn unranked_list(label: &str, items: &[ItemId], tree: &GlobalTree) -> Markup {
     html! {
         @if !items.is_empty() {
             h3 class="rank-heading muted small" { (label) }
@@ -191,7 +198,7 @@ fn unranked_list(label: &str, items: &[ItemId]) -> Markup {
                 @for it in items {
                     li {
                         a href=(item_href(it)) {
-                            strong { (display_label(it)) }
+                            strong { (child_label(tree, it)) }
                         }
                     }
                 }
@@ -200,7 +207,7 @@ fn unranked_list(label: &str, items: &[ItemId]) -> Markup {
     }
 }
 
-pub fn ranking_panel(item: &ItemId, node: &NodeState) -> Markup {
+pub fn ranking_panel(item: &ItemId, node: &NodeState, tree: &GlobalTree) -> Markup {
     let group = &node.local_ranking;
     let n = group.idx_to_item.len();
     let (comps, _isolates) =
@@ -248,7 +255,7 @@ pub fn ranking_panel(item: &ItemId, node: &NodeState) -> Markup {
                     @let label = if multi { format!("Ranking group {}", gi + 1) } else { "Ranking".to_string() };
                     (rank_list(&label, ranked, 1))
                 }
-                (unranked_list("Unranked", &unranked))
+                (unranked_list("Unranked", &unranked, tree))
             }
         }
     }
@@ -297,7 +304,7 @@ async fn item_page(state: AppState, uri: Uri, item: ItemId) -> Markup {
         (input_panel("", None))
         (breadcrumb_path(&item))
         (entity_section(&item, node, false))
-        (ranking_panel(&item, node))
+        (ranking_panel(&item, node, &tree))
     };
     layout("sorter2", body, views)
 }
diff --git a/server/src/reddit.rs b/server/src/reddit.rs
index a0eb688709478ee0185b953b41a5d26cc354764d..69d979bc7e4a1cb078f70114dc539bdc1986b574 100644
--- a/server/src/reddit.rs
+++ b/server/src/reddit.rs
@@ -300,9 +300,16 @@ async fn reddit_worker(
                     }
                     {
                         let mut tree = tree.write().await;
-                        apply_entity_import(&mut tree, &child_id, child_payload);
                         if kind == FetchKind::Children {
-                            tree.link_child(&fetch_id, &child_id);
+                            let view = entity_view_from_payload(&child_id, &child_payload);
+                            tree.apply_entity_under_parent(
+                                &fetch_id,
+                                &child_id,
+                                child_payload,
+                                view,
+                            );
+                        } else {
+                            apply_entity_import(&mut tree, &child_id, child_payload);
                         }
                     }
                     written += 1;
diff --git a/server/src/reducer.rs b/server/src/reducer.rs
index a36cd5c9287d61536f9f4a3f6b0df2342388857a..4e42d0369dab50bb2f8ca664aa69b628292f6c07 100644
--- a/server/src/reducer.rs
+++ b/server/src/reducer.rs
@@ -209,14 +209,24 @@ impl GlobalTree {
         }
     }
 
-    /// Directly attach `child` under `parent`, bypassing path-based nesting.
-    /// Used for imported listings (e.g. a subreddit's posts) so they show up
-    /// as children of the subreddit rather than a deep `…/comments/<id>` path.
-    pub fn link_child(&mut self, parent: &ItemId, child: &ItemId) {
+    /// Import entity data for `id` and attach it as a direct child of `parent`
+    /// without running [`Self::ensure_path`] on `id` (avoids Reddit `/comments/`
+    /// parent rules pulling intermediate path segments into the subreddit).
+    pub fn apply_entity_under_parent(
+        &mut self,
+        parent: &ItemId,
+        id: &ItemId,
+        payload: Value,
+        view: Option<EntityData>,
+    ) {
         self.ensure_path(parent);
-        self.ensure_path(child);
+        self.ensure_node(id);
+        if let Some(node) = self.nodes.get_mut(id) {
+            node.entity_raw = Some(payload);
+            node.data = view;
+        }
         if let Some(p) = self.nodes.get_mut(parent) {
-            p.children.insert(child.clone());
+            p.children.insert(id.clone());
         }
     }
 }
diff --git a/test/reddit_import.clj b/test/reddit_import.clj
index 84cbdcf7965e50290313cbce2243a16b583d2097..45a2a19f20799d77e84d8aa64735ab5e7e45f97c 100644
--- a/test/reddit_import.clj
+++ b/test/reddit_import.clj
@@ -67,6 +67,36 @@
           (do (Thread/sleep 200) (recur))
           false)))))
 
+(defn- run-reddit-fetch-assertions [app-base data-dir]
+  (let [browse-url (str app-base "/~/https://reddit.com/r/rust")
+        log-path (str data-dir "/events.jsonl")
+        before (:out (process/shell {:out :string :err :string}
+                                    "curl" "-sf" browse-url))]
+    (is (str/includes? before "Fetch from Reddit"))
+    (is (not (str/includes? before "The Rust Programming Language")))
+    (let [sse (curl-fetch-ui-sse app-base "reddit.com/r/rust" "self")]
+      (is (zero? (:exit sse)) "POST /ui fetch_entity (self) SSE succeeds")
+      (is (str/includes? (:out sse) "Idiomorph.morph"))
+      (is (str/includes? (:out sse) "The Rust Programming Language"))
+      (is (wait-event-log log-path 2000) "event log written"))
+    (let [after (:out (process/shell {:out :string :err :string}
+                                     "curl" "-sf" browse-url))
+          log (slurp (io/file log-path))]
+      (is (str/includes? after "The Rust Programming Language"))
+      (is (str/includes? log "\"type\":\"entity_imported\""))
+      (is (str/includes? log "\"subscribers\":350000"))
+      (is (str/includes? log "\"display_name\":\"rust\"")))
+    (let [children-sse (curl-fetch-ui-sse app-base "reddit.com/r/rust" "children")]
+      (is (zero? (:exit children-sse)) "POST /ui fetch_entity (children) SSE succeeds")
+      (is (str/includes? (:out children-sse) "Idiomorph.morph"))
+      (is (str/includes? (:out children-sse) "Announcing Rust 1.99")))
+    (let [after-children (:out (process/shell {:out :string :err :string}
+                                              "curl" "-sf" browse-url))
+          log2 (slurp (io/file log-path))]
+      (is (str/includes? after-children "Announcing Rust 1.99"))
+      (is (str/includes? after-children "Unranked"))
+      (is (str/includes? log2 "announcing_rust_199")))))
+
 (deftest reddit-fetch-via-mock-api
   (testing "Fetch more queues import; event log stores full payload; page shows title"
     (let [root (repo-root)
@@ -102,24 +132,7 @@
                                     bin)]
           (try
             (is (wait-health app-base 20000) "app healthz")
-            (let [browse-url (str app-base "/~/https://reddit.com/r/rust")
-                  before (:out (process/shell {:out :string :err :string}
-                                              "curl" "-sf" browse-url))]
-              (is (str/includes? before "Fetch from Reddit"))
-              (is (not (str/includes? before "The Rust Programming Language")))
-              (let [log-path (str data-dir "/events.jsonl")
-                    sse (curl-fetch-ui-sse app-base "reddit.com/r/rust")]
-                (is (zero? (:exit sse)) "POST /ui fetch_entity SSE succeeds")
-                (is (str/includes? (:out sse) "event: complete"))
-                (is (str/includes? (:out sse) "The Rust Programming Language"))
-                (is (wait-event-log log-path 2000) "event log written")
-                (let [after (:out (process/shell {:out :string :err :string}
-                                                 "curl" "-sf" browse-url))
-                      log (slurp (io/file log-path))]
-                  (is (str/includes? after "The Rust Programming Language"))
-                  (is (str/includes? log "\"type\":\"entity_imported\""))
-                  (is (str/includes? log "\"subscribers\":350000"))
-                  (is (str/includes? log "\"display_name\":\"rust\"")))))
+            (run-reddit-fetch-assertions app-base data-dir)
             (finally
               (process/destroy proc))))
         (finally
diff --git a/test/smoke.clj b/test/smoke.clj
index 11887c48282088e140d823a88ba616f6325835b3..ce9f958c84b9a89ae55e215ab519f1df6435e24b 100644
--- a/test/smoke.clj
+++ b/test/smoke.clj
@@ -49,7 +49,7 @@
           (is (wait-health base 15000) "server responds to /healthz")
           (let [home (:out (process/shell {:out :string :err :string}
                                          "curl" "-sf" (str base "/")))]
-            (is (str/includes? home "vote-panel"))
+            (is (str/includes? home "entity-section"))
             (is (str/includes? home "ranking-panel"))
             (is (str/includes? home "parser-panel"))
             (is (str/includes? home "__rpc__")))


Side B — contributor: tommy-mor
Side B — commit message:
[bf118bdf] Sanitize Reddit entity body HTML before rendering.

Use ammonia at render time so untrusted selftext_html cannot execute scripts in our origin.

Co-authored-by: Cursor <cursoragent@cursor.com>

Side B — unified diff (full patch):
diff --git a/Cargo.lock b/Cargo.lock
index 3dec7cb72a182dc654a37dca8ba0b49d77504daa..0dd4fce5fb6400ae153cca4e3dbf5a5158e6d8b4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -11,6 +11,19 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "ammonia"
+version = "4.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "17e913097e1a2124b46746c980134e8c954bc17a6a59bb3fde96f088d126dde6"
+dependencies = [
+ "cssparser",
+ "html5ever",
+ "maplit",
+ "tendril",
+ "url",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.102"
@@ -355,6 +368,29 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "460fbee9c2c2f33933d720630a6a0bac33ba7053db5344fac858d4b8952d77d5"
 
+[[package]]
+name = "cssparser"
+version = "0.35.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e901edd733a1472f944a45116df3f846f54d37e67e68640ac8bb69689aca2aa"
+dependencies = [
+ "cssparser-macros",
+ "dtoa-short",
+ "itoa",
+ "phf",
+ "smallvec",
+]
+
+[[package]]
+name = "cssparser-macros"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13b588ba4ac1a99f7f2964d24b3d896ddc6bf847ee3855dbd4366f058cfcd331"
+dependencies = [
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "deranged"
 version = "0.5.8"
@@ -381,6 +417,21 @@ version = "0.15.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1aaf95b3e5c8f23aa320147307562d361db0ae0d51242340f558153b4eb2439b"
 
+[[package]]
+name = "dtoa"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c3cf4824e2d5f025c7b531afcb2325364084a16806f6d47fbc1f5fbd9960590"
+
+[[package]]
+name = "dtoa-short"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd1511a7b6a56299bd043a9c167a6d2bfb37bf84a6dfceaba651168adfb43c87"
+dependencies = [
+ "dtoa",
+]
+
 [[package]]
 name = "durable"
 version = "0.2.0"
@@ -482,6 +533,16 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "futf"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df420e2e84819663797d1ec6544b13c5be84629e7bb00dc960d6917db2987843"
+dependencies = [
+ "mac",
+ "new_debug_unreachable",
+]
+
 [[package]]
 name = "futures-channel"
 version = "0.3.32"
@@ -614,6 +675,17 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
+[[package]]
+name = "html5ever"
+version = "0.35.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55d958c2f74b664487a2035fe1dadb032c48718a03b63f3ab0b8537db8549ed4"
+dependencies = [
+ "log",
+ "markup5ever",
+ "match_token",
+]
+
 [[package]]
 name = "http"
 version = "1.4.1"
@@ -974,6 +1046,15 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "92daf443525c4cce67b150400bc2316076100ce0b3686209eb8cf3c31612e6f0"
 
+[[package]]
+name = "lock_api"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "224399e74b87b5f3557511d98dff8b14089b3dadafcab6bb93eab67d3aace965"
+dependencies = [
+ "scopeguard",
+]
+
 [[package]]
 name = "log"
 version = "0.4.30"
@@ -990,6 +1071,40 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "mac"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c41e0c4fef86961ac6d6f8a82609f55f31b05e4fce149ac5710e439df7619ba4"
+
+[[package]]
+name = "maplit"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e2e65a1a2e43cfcb47a895c4c8b10d1f4a61097f9f254f183aee60cad9c651d"
+
+[[package]]
+name = "markup5ever"
+version = "0.35.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "311fe69c934650f8f19652b3946075f0fc41ad8757dbb68f1ca14e7900ecc1c3"
+dependencies = [
+ "log",
+ "tendril",
+ "web_atoms",
+]
+
+[[package]]
+name = "match_token"
+version = "0.35.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac84fd3f360fcc43dc5f5d186f02a94192761a080e8bc58621ad4d12296a58cf"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "matchers"
 version = "0.2.0"
@@ -1092,6 +1207,12 @@ dependencies = [
  "tempfile",
 ]
 
+[[package]]
+name = "new_debug_unreachable"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "650eef8c711430f1a879fdd01d4745a7deea475becfb90269c06775983bbf086"
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -1175,6 +1296,29 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "parking_lot"
+version = "0.12.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93857453250e3077bd71ff98b6a65ea6621a19bb0f559a85248955ac12c45a1a"
+dependencies = [
+ "lock_api",
+ "parking_lot_core",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.9.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2621685985a2ebf1c516881c026032ac7deafcda1a2c9b7850dc81e3dfcb64c1"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "redox_syscall",
+ "smallvec",
+ "windows-link",
+]
+
 [[package]]
 name = "peeking_take_while"
 version = "0.1.2"
@@ -1187,6 +1331,58 @@ version = "2.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
 
+[[package]]
+name = "phf"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd6780a80ae0c52cc120a26a1a42c1ae51b247a253e4e06113d23d2c2edd078"
+dependencies = [
+ "phf_macros",
+ "phf_shared",
+]
+
+[[package]]
+name = "phf_codegen"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aef8048c789fa5e851558d709946d6d79a8ff88c0440c587967f8e94bfb1216a"
+dependencies = [
+ "phf_generator",
+ "phf_shared",
+]
+
+[[package]]
+name = "phf_generator"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c80231409c20246a13fddb31776fb942c38553c51e871f8cbd687a4cfb5843d"
+dependencies = [
+ "phf_shared",
+ "rand 0.8.6",
+]
+
+[[package]]
+name = "phf_macros"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f84ac04429c13a7ff43785d75ad27569f2951ce0ffd30a3321230db2fc727216"
+dependencies = [
+ "phf_generator",
+ "phf_shared",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "phf_shared"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67eabc2ef2a60eb7faa00097bd1ffdb5bd28e62bf39990626a582201b7a754e5"
+dependencies = [
+ "siphasher",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.17"
@@ -1223,6 +1419,12 @@ dependencies = [
  "zerocopy",
 ]
 
+[[package]]
+name = "precomputed-hash"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
+
 [[package]]
 name = "prettyplease"
 version = "0.2.37"
@@ -1379,6 +1581,15 @@ dependencies = [
  "rand_core 0.9.5",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.5.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed2bf2547551a7053d6fdfafda3f938979645c44812fbfcda098faae3f1a362d"
+dependencies = [
+ "bitflags 2.11.1",
+]
+
 [[package]]
 name = "regex"
 version = "1.12.3"
@@ -1563,6 +1774,12 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "scopeguard"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
+
 [[package]]
 name = "security-framework"
 version = "3.7.0"
@@ -1683,6 +1900,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "siphasher"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ee5873ec9cce0195efcb7a4e9507a04cd49aec9c83d0389df45b1ef7ba2e649"
+
 [[package]]
 name = "slab"
 version = "0.4.12"
@@ -1709,6 +1932,7 @@ dependencies = [
 name = "sorter2-server"
 version = "0.0.1"
 dependencies = [
+ "ammonia",
  "async-stream",
  "axum",
  "axum-extra",
@@ -1742,6 +1966,31 @@ version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6ce2be8dc25455e1f91df71bfa12ad37d7af1092ae736f3a6cd0e37bc7810596"
 
+[[package]]
+name = "string_cache"
+version = "0.8.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf776ba3fa74f83bf4b63c3dcbbf82173db2632ed8452cb2d891d33f459de70f"
+dependencies = [
+ "new_debug_unreachable",
+ "parking_lot",
+ "phf_shared",
+ "precomputed-hash",
+ "serde",
+]
+
+[[package]]
+name = "string_cache_codegen"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c711928715f1fe0fe509c53b43e993a9a557babc2d0a3567d0a3006f1ac931a0"
+dependencies = [
+ "phf_generator",
+ "phf_shared",
+ "proc-macro2",
+ "quote",
+]
+
 [[package]]
 name = "subtle"
 version = "2.6.1"
@@ -1813,6 +2062,17 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "tendril"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d24a120c5fc464a3458240ee02c299ebcb9d67b5249c8848b09d639dca8d7bb0"
+dependencies = [
+ "futf",
+ "mac",
+ "utf-8",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.69"
@@ -2116,6 +2376,12 @@ version = "2.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "daf8dba3b7eb870caf1ddeed7bc9d2a049f3cfdfae7cb521b087cc33ae4c49da"
 
+[[package]]
+name = "utf-8"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09cc8ee72d2a9becf2f2febe0205bbed8fc6615b7cb429ad062dc7b7ddd036a9"
+
 [[package]]
 name = "utf8_iter"
 version = "1.0.4"
@@ -2281,6 +2547,18 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "web_atoms"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57ffde1dc01240bdf9992e3205668b235e59421fd085e8a317ed98da0178d414"
+dependencies = [
+ "phf",
+ "phf_codegen",
+ "string_cache",
+ "string_cache_codegen",
+]
+
 [[package]]
 name = "windows-link"
 version = "0.2.1"
diff --git a/server/Cargo.toml b/server/Cargo.toml
index 47659ff82fbfb50972eb2b87575e80f66e572ba4..27f552c20b97ef28cdde4cb6b1a4980375135111 100644
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -13,6 +13,7 @@ serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 thiserror = "1"
 maud = { version = "0.26", features = ["axum"] }
+ammonia = "4.1"
 tower = "0.5"
 tower-http = { version = "0.5", features = ["trace"] }
 tracing = "0.1"
diff --git a/server/src/fetch/html.rs b/server/src/fetch/html.rs
index dadf050515f0473943dad97df5d318032c8cb385..5b160c6b8bd216dfaf80149854aec0566cd00460 100644
--- a/server/src/fetch/html.rs
+++ b/server/src/fetch/html.rs
@@ -4,6 +4,7 @@ use maud::{html, Markup};
 
 use crate::{
     form_template::template_json_compact,
+    html::sanitize::entity_body_html,
     path_types::ItemId,
     reddit::{is_children_fetchable, is_fetchable},
     reducer::NodeState,
@@ -27,7 +28,7 @@ pub fn entity_panel(node: &NodeState) -> Markup {
                     p class="muted small" { "by " (author) }
                 }
                 @if let Some(body) = &data.body_html {
-                    div class="entity-body" { (maud::PreEscaped(body)) }
+                    div class="entity-body" { (maud::PreEscaped(entity_body_html(body))) }
                 }
             }
         }
diff --git a/server/src/html/mod.rs b/server/src/html/mod.rs
index e180a0ca542a33e2300c0a4809e6b9cfee07ecfe..a58cbbee3490a08a625cb06df06848c59a615d65 100644
--- a/server/src/html/mod.rs
+++ b/server/src/html/mod.rs
@@ -20,6 +20,7 @@ use crate::{
     ui_action::UI_RPC_FIELD,
 };
 
+pub mod sanitize;
 pub mod vote;
 
 const SORTER_CSS: &str = include_str!("../../static/sorter.css");
diff --git a/server/src/html/sanitize.rs b/server/src/html/sanitize.rs
new file mode 100644
index 0000000000000000000000000000000000000000..6685ed2535281b9fd5d65b042cbc5a11c5d4df37
--- /dev/null
+++ b/server/src/html/sanitize.rs
@@ -0,0 +1,39 @@
+//! Whitelist sanitization for untrusted HTML fragments (e.g. Reddit `selftext_html`).
+
+use std::sync::LazyLock;
+
+use ammonia::Builder;
+
+static ENTITY_BODY: LazyLock<Builder<'static>> = LazyLock::new(|| {
+    let mut b = Builder::default();
+    b.strip_comments(true);
+    b.link_rel(Some("noopener noreferrer"));
+    b
+});
+
+/// Sanitize HTML safe for embedding in our pages via [`maud::PreEscaped`].
+pub fn entity_body_html(raw: &str) -> String {
+    ENTITY_BODY.clean(raw).to_string()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::entity_body_html;
+
+    #[test]
+    fn keeps_benign_markup() {
+        assert_eq!(
+            entity_body_html("<p>release notes</p>"),
+            "<p>release notes</p>"
+        );
+    }
+
+    #[test]
+    fn strips_scripts_and_event_handlers() {
+        let raw = "<p>ok</p><script>alert(1)</script><img src=x onerror=alert(1)>";
+        let clean = entity_body_html(raw);
+        assert!(!clean.contains("<script"));
+        assert!(!clean.contains("onerror"));
+        assert!(clean.contains("<p>ok</p>"));
+    }
+}
diff --git a/server/src/render/reddit.rs b/server/src/render/reddit.rs
index c4f98fc760c32ce1b41a91bd41e97908bd198937..7f840aa33b734a31d8cf3341a0581c8bcb9bbcf3 100644
--- a/server/src/render/reddit.rs
+++ b/server/src/render/reddit.rs
@@ -3,6 +3,7 @@
 use maud::{html, Markup};
 
 use crate::{
+    html::sanitize::entity_body_html,
     path_types::ItemId,
     reducer::{EntityData, GlobalTree, NodeState},
 };
@@ -57,7 +58,7 @@ fn post_entity_card(data: &EntityData) -> Markup {
                 }
             }
             @if let Some(body) = &data.body_html {
-                div class="entity-body" { (maud::PreEscaped(body)) }
+                div class="entity-body" { (maud::PreEscaped(entity_body_html(body))) }
             }
         }
     }