{"messages":[{"content":"You are a constitutional council ranking individual git commits for ownership allocation.\n\nCompare these two commits. Decide which contributed more lasting value to the project.\n\nJudge substance, not spectacle:\n- Prefer correct, lasting design and real bugfixes over churn, formatting, renames, or generated noise.\n- Prefer clarity and necessity over sheer line count. A small precise change can beat a large diffuse one.\n- Do not favor a side merely because its patch is longer or noisier.\n- Weight what the change does for the project, not the contributor's name.\n\nReturn ONLY a JSON object: {\"winner\": \"A\" or \"B\", \"ratio\": \"N:M\", \"explanation\": \"...\"}\nThe explanation must cite concrete differences in the patches (1-3 sentences).\n\nSide A — contributor: tommy-mor\nSide A — commit message:\n[075d4d37] Fix OAuth test mocks so Clojure E2E auth flows work again.\n\nHttpServer handlers were crashing on query parsing and token POSTs, which broke Playwright login; also read alias/history via real CSS selectors.\n\nCo-authored-by: Cursor <cursoragent@cursor.com>\n\nSide A — unified diff (full patch):\ndiff --git a/test/auth_login.clj b/test/auth_login.clj\nindex 6f2f00d7aa7340e63d1ac465b0a2234cec7a983f..aa63b66ccb2471b710ba3d168d0461252b39fc10 100644\n--- a/test/auth_login.clj\n+++ b/test/auth_login.clj\n@@ -14,27 +14,27 @@\n (defn- type-alias! [pg text]\n   (page/evaluate pg\n                  (.replace\n-                  \"(() => { const i = document.getElementById('alias-input'); const f = document.getElementById('alias-check-form'); if (!i || !f) return;\n+                  \"(() => { const i = document.getElementById('alias-input'); const f = document.getElementById('alias-check-form'); if (!i || !f) return Promise.resolve('missing-form');\n                     i.value = __TEXT__;\n                     const cf = document.getElementById('alias-claim-field'); if (cf) cf.value = i.value;\n                     return fetch(f.action, { method: 'POST', credentials: 'same-origin',\n                       headers: { 'Content-Type': 'application/x-www-form-urlencoded' },\n                       body: new URLSearchParams(new FormData(f)).toString() })\n                       .then(function (r) { return r.text(); })\n-                      .then(function (t) { eval(t); }); })()\"\n+                      .then(function (t) { eval(t); return document.getElementById('alias-status')?.textContent || ''; }); })()\"\n                   \"__TEXT__\"\n-                  (pr-str text)))\n-  (Thread/sleep 400))\n+                  (pr-str text))))\n \n-(defn- element-text [pg test-id]\n+(defn- element-text [pg selector]\n   (let [raw (page/evaluate pg\n-                           (str \"document.querySelector('[data-testid=\\\"\" test-id \"\\\"]')?.textContent || ''\"))]\n+                           (str \"document.querySelector(\" (pr-str selector) \")?.textContent || ''\"))]\n     (when (string? raw) (str/trim raw))))\n \n (defn- wait-for-text [pg test-id text timeout-ms]\n-  (let [deadline (+ (System/currentTimeMillis) timeout-ms)]\n+  (let [deadline (+ (System/currentTimeMillis) timeout-ms)\n+        selector (str \"[data-testid=\\\"\" test-id \"\\\"]\")]\n     (loop []\n-      (let [got (or (element-text pg test-id) \"\")]\n+      (let [got (or (element-text pg selector) \"\")]\n         (cond\n           (= got text) got\n           (< (System/currentTimeMillis) deadline) (do (Thread/sleep 200) (recur))\ndiff --git a/test/support/mock_oauth.clj b/test/support/mock_oauth.clj\nindex 5ba7e9be3cf6d2226648e9609a09ed45f306930f..333fe08d56cb06bac2a338cad1c73894d54c4495 100644\n--- a/test/support/mock_oauth.clj\n+++ b/test/support/mock_oauth.clj\n@@ -7,7 +7,7 @@\n (defn- query-param [query key]\n   (when query\n     (some (fn [pair]\n-            (let [[k v] (str/split pair \"=\" 2)]\n+            (let [[k v] (str/split pair #\"=\" 2)]\n               (when (= k key)\n                 (URLDecoder/decode (or v \"\") \"UTF-8\"))))\n           (str/split query #\"&\"))))\n@@ -31,11 +31,11 @@\n \n (defn- send-redirect [^HttpExchange ex location]\n   (.set (.getResponseHeaders ex) \"Location\" location)\n-  (.sendResponseHeaders ex 302 -1)\n+  (.sendResponseHeaders ex 302 0)\n   (.close (.getResponseBody ex)))\n \n (defn- read-form [^HttpExchange ex]\n-  (let [body (slurp (.getInputStream ex))]\n+  (let [body (slurp (.getRequestBody ex))]\n     {:code (query-param body \"code\")\n      :grant (query-param body \"grant_type\")}))\n \n@@ -45,7 +45,7 @@\n           (str/replace #\"^[Bb]earer \" \"\")))\n \n (defn- parse-token-user [token]\n-  (when (str/starts-with? token \"mock:\")\n+  (when (and token (str/starts-with? token \"mock:\"))\n     (parse-mock-user (subs token 5))))\n \n (defn- authorize-redirect [exchange query]\n@@ -55,7 +55,7 @@\n         user (parse-mock-user mock-user)\n         code (str \"mock:\" (:id user) \":\" (:login user))\n         loc (str redirect-uri \"?code=\" (java.net.URLEncoder/encode code \"UTF-8\")\n-                 \"&state=\" (java.net.URLEncoder/encode state \"UTF-8\"))]\n+                 \"&state=\" (java.net.URLEncoder/encode (or state \"\") \"UTF-8\"))]\n     (send-redirect exchange loc)))\n \n (defn start-mock-oauth\n@@ -65,49 +65,56 @@\n         handler\n         (proxy [HttpHandler] []\n           (handle [^HttpExchange exchange]\n-            (let [uri (.getRequestURI exchange)\n-                  path (.getPath uri)\n-                  query (.getQuery uri)\n-                  method (.getRequestMethod exchange)]\n-              (cond\n-                ;; GitHub authorize\n-                (str/ends-with? path \"/login/oauth/authorize\")\n-                (authorize-redirect exchange query)\n+            (try\n+              (let [uri (.getRequestURI exchange)\n+                    path (.getPath uri)\n+                    query (.getQuery uri)\n+                    method (.getRequestMethod exchange)]\n+                (cond\n+                  ;; GitHub authorize\n+                  (str/ends-with? path \"/login/oauth/authorize\")\n+                  (authorize-redirect exchange query)\n \n-                ;; Reddit authorize\n-                (str/ends-with? path \"/api/v1/authorize\")\n-                (authorize-redirect exchange query)\n+                  ;; Reddit authorize\n+                  (str/ends-with? path \"/api/v1/authorize\")\n+                  (authorize-redirect exchange query)\n \n-                ;; GitHub token\n-                (and (= method \"POST\") (str/ends-with? path \"/login/oauth/access_token\"))\n-                (let [code (or (:code (read-form exchange)) \"mock:1002:newbie\")]\n-                  (send-json exchange 200 (str \"{\\\"access_token\\\":\\\"\" code \"\\\",\\\"token_type\\\":\\\"bearer\\\"}\")))\n+                  ;; GitHub token\n+                  (and (= method \"POST\") (str/ends-with? path \"/login/oauth/access_token\"))\n+                  (let [code (or (:code (read-form exchange)) \"mock:1002:newbie\")]\n+                    (send-json exchange 200 (str \"{\\\"access_token\\\":\\\"\" code \"\\\",\\\"token_type\\\":\\\"bearer\\\"}\")))\n \n-                ;; Reddit token (client_credentials for import + authorization_code for login)\n-                (and (= method \"POST\") (str/ends-with? path \"/api/v1/access_token\"))\n-                (let [form (read-form exchange)\n-                      grant (or (:grant form) \"\")\n-                      code (or (:code form) \"mock:t2_test:redditor\")]\n-                  (if (= grant \"client_credentials\")\n-                    (send-json exchange 200 \"{\\\"access_token\\\":\\\"app-token\\\",\\\"token_type\\\":\\\"bearer\\\",\\\"expires_in\\\":3600}\")\n-                    (send-json exchange 200 (str \"{\\\"access_token\\\":\\\"\" code \"\\\",\\\"token_type\\\":\\\"bearer\\\",\\\"expires_in\\\":3600}\"))))\n+                  ;; Reddit token (client_credentials for import + authorization_code for login)\n+                  (and (= method \"POST\") (str/ends-with? path \"/api/v1/access_token\"))\n+                  (let [form (read-form exchange)\n+                        grant (or (:grant form) \"\")\n+                        code (or (:code form) \"mock:t2_test:redditor\")]\n+                    (if (= grant \"client_credentials\")\n+                      (send-json exchange 200 \"{\\\"access_token\\\":\\\"app-token\\\",\\\"token_type\\\":\\\"bearer\\\",\\\"expires_in\\\":3600}\")\n+                      (send-json exchange 200 (str \"{\\\"access_token\\\":\\\"\" code \"\\\",\\\"token_type\\\":\\\"bearer\\\",\\\"expires_in\\\":3600}\"))))\n \n-                ;; GitHub user\n-                (= path \"/user\")\n-                (let [token (bearer-token exchange)\n-                      user (or (parse-token-user token) {:id \"1002\" :login \"newbie\" :numeric? true})]\n-                  (send-json exchange 200\n-                             (str \"{\\\"id\\\":\" (:id user) \",\\\"login\\\":\\\"\" (:login user) \"\\\"}\")))\n+                  ;; GitHub user\n+                  (= path \"/user\")\n+                  (let [token (bearer-token exchange)\n+                        user (or (parse-token-user token) {:id \"1002\" :login \"newbie\" :numeric? true})]\n+                    (send-json exchange 200\n+                               (str \"{\\\"id\\\":\" (:id user) \",\\\"login\\\":\\\"\" (:login user) \"\\\"}\")))\n \n-                ;; Reddit /api/v1/me\n-                (str/ends-with? path \"/api/v1/me\")\n-                (let [token (bearer-token exchange)\n-                      user (or (parse-token-user token) {:id \"t2_test\" :login \"redditor\"})]\n-                  (send-json exchange 200\n-                             (str \"{\\\"id\\\":\\\"\" (:id user) \"\\\",\\\"name\\\":\\\"\" (:login user) \"\\\"}\")))\n+                  ;; Reddit /api/v1/me\n+                  (str/ends-with? path \"/api/v1/me\")\n+                  (let [token (bearer-token exchange)\n+                        user (or (parse-token-user token) {:id \"t2_test\" :login \"redditor\"})]\n+                    (send-json exchange 200\n+                               (str \"{\\\"id\\\":\\\"\" (:id user) \"\\\",\\\"name\\\":\\\"\" (:login user) \"\\\"}\")))\n \n-                :else\n-                (send-json exchange 404 \"{\\\"error\\\":\\\"not found\\\"}\")))))]\n+                  :else\n+                  (send-json exchange 404 \"{\\\"error\\\":\\\"not found\\\"}\")))\n+              (catch Throwable t\n+                (binding [*out* *err*]\n+                  (println \"mock-oauth handler error:\" t))\n+                (try\n+                  (send-json exchange 500 \"{\\\"error\\\":\\\"mock-oauth internal\\\"}\")\n+                  (catch Throwable _))))))]\n     (.createContext server \"/\" handler)\n     (.setExecutor server nil)\n     (.start server)\ndiff --git a/test/support/mock_reddit.clj b/test/support/mock_reddit.clj\nindex a630cf0938722193e9af88382d60e777ff371be4..faa27945b6394363914c853627a0bad1e819a5f9 100644\n--- a/test/support/mock_reddit.clj\n+++ b/test/support/mock_reddit.clj\n@@ -12,7 +12,7 @@\n (defn- query-param [query key]\n   (when query\n     (some (fn [pair]\n-            (let [[k v] (str/split pair \"=\" 2)]\n+            (let [[k v] (str/split pair #\"=\" 2)]\n               (when (= k key)\n                 (URLDecoder/decode (or v \"\") \"UTF-8\"))))\n           (str/split query #\"&\"))))\n@@ -34,11 +34,11 @@\n \n (defn- send-redirect [^HttpExchange ex location]\n   (.set (.getResponseHeaders ex) \"Location\" location)\n-  (.sendResponseHeaders ex 302 -1)\n+  (.sendResponseHeaders ex 302 0)\n   (.close (.getResponseBody ex)))\n \n (defn- read-form [^HttpExchange ex]\n-  (let [body (slurp (.getInputStream ex))]\n+  (let [body (slurp (.getRequestBody ex))]\n     {:code (query-param body \"code\")\n      :grant (query-param body \"grant_type\")}))\n \n@@ -48,7 +48,7 @@\n           (str/replace #\"^[Bb]earer \" \"\")))\n \n (defn- parse-token-user [token]\n-  (when (str/starts-with? token \"mock:\")\n+  (when (and token (str/starts-with? token \"mock:\"))\n     (parse-mock-user (subs token 5))))\n \n (defn start-mock-reddit\n@@ -72,7 +72,7 @@\n                        user (parse-mock-user (query-param query \"mock_user\"))\n                        code (str \"mock:\" (:id user) \":\" (:login user))\n                        loc (str redirect-uri \"?code=\" (java.net.URLEncoder/encode code \"UTF-8\")\n-                                \"&state=\" (java.net.URLEncoder/encode state \"UTF-8\"))]\n+                                \"&state=\" (java.net.URLEncoder/encode (or state \"\") \"UTF-8\"))]\n                    (send-redirect exchange loc))\n \n                  (and (= method \"POST\") (str/ends-with? path \"/api/v1/access_token\"))\n\n\nSide B — contributor: tommy-mor\nSide B — commit message:\n[04b81f91] Fix vote compare highlighting\n\nCo-authored-by: Cursor <cursoragent@cursor.com>\n\nSide B — unified diff (full patch):\ndiff --git a/server/src/html/mod.rs b/server/src/html/mod.rs\nindex 588cf62bcea608ed4ede363810f022a67b43b960..e180a0ca542a33e2300c0a4809e6b9cfee07ecfe 100644\n--- a/server/src/html/mod.rs\n+++ b/server/src/html/mod.rs\n@@ -291,18 +291,17 @@ fn rank_list(\n     label: &str,\n     items: &[RankedItem],\n     start_rank: usize,\n-    total_ranked: usize,\n-    ordinal_offset: usize,\n     highlighted: &HashSet<ItemId>,\n     tree: &GlobalTree,\n ) -> Markup {\n+    let group_len = items.len();\n     html! {\n         @if !items.is_empty() {\n             h3 class=\"rank-heading muted small\" { (label) }\n             ol class=\"rank-list\" {\n                 @for (i, r) in items.iter().enumerate() {\n                     @let href = item_href(&r.item);\n-                    @let style = rank_row_style(parent, ordinal_offset + i, total_ranked);\n+                    @let style = rank_row_style(parent, i, group_len);\n                     @let class = rank_row_class(&r.item, highlighted);\n                     li class=(class)\n                         data-rank-item=(r.item.as_str())\n@@ -420,8 +419,6 @@ pub fn ranking_panel_with_highlights(\n \n     let has_ranked = !ranked_groups.is_empty();\n     let multi = ranked_groups.len() > 1;\n-    let total_ranked: usize = ranked_groups.iter().map(|g| g.len()).sum();\n-    let mut ordinal_offset = 0usize;\n \n     html! {\n         section id=\"ranking-panel\" class=\"demo-panel\" {\n@@ -436,8 +433,7 @@ pub fn ranking_panel_with_highlights(\n             } @else {\n                 @for (gi, ranked) in ranked_groups.iter().enumerate() {\n                     @let label = if multi { format!(\"Ranking group {}\", gi + 1) } else { \"Ranking\".to_string() };\n-                    (rank_list(item, &label, ranked, 1, total_ranked, ordinal_offset, highlighted, tree))\n-                    @let _ = { ordinal_offset += ranked.len(); };\n+                    (rank_list(item, &label, ranked, 1, highlighted, tree))\n                 }\n                 (unranked_list(\"Unranked\", &unranked, highlighted, tree))\n             }\n@@ -520,7 +516,20 @@ pub async fn browse(State(state): State<AppState>, uri: Uri) -> impl IntoRespons\n \n #[cfg(test)]\n mod tests {\n-    use super::SORTER_UI_JS;\n+    use super::{rank_row_style, SORTER_UI_JS};\n+    use crate::path_types::ItemId;\n+\n+    #[test]\n+    fn rank_row_style_gradients_per_group_not_globally() {\n+        let parent = ItemId::opaque(\"test-scope\");\n+        let first_in_four = rank_row_style(&parent, 0, 4);\n+        let last_in_four = rank_row_style(&parent, 3, 4);\n+        let first_in_two = rank_row_style(&parent, 0, 2);\n+        let last_in_two = rank_row_style(&parent, 1, 2);\n+        assert_eq!(first_in_four, first_in_two);\n+        assert_eq!(last_in_four, last_in_two);\n+        assert_ne!(first_in_four, last_in_four);\n+    }\n \n     #[test]\n     fn vote_slider_left_position_favors_left_item() {\ndiff --git a/server/src/html/vote.rs b/server/src/html/vote.rs\nindex 483c7ff8cd35266744957cf0087f2b5f76f1a237..30dab303b9d1e763a5b9261dffff13a778e3e4e3 100644\n--- a/server/src/html/vote.rs\n+++ b/server/src/html/vote.rs\n@@ -19,7 +19,7 @@ use crate::{\n     ui_action::UI_RPC_FIELD,\n };\n \n-use super::{breadcrumb_path, item_href, layout};\n+use super::{breadcrumb_path, layout};\n \n #[derive(Debug, Deserialize)]\n pub struct VoteQuery {\n@@ -59,17 +59,6 @@ fn child_title(tree: &GlobalTree, id: &ItemId) -> String {\n         .unwrap_or_else(|| display_label(id))\n }\n \n-fn ratio_pct(ratio_left: i32, ratio_right: i32) -> f64 {\n-    let l = ratio_left.max(0) as f64;\n-    let r = ratio_right.max(0) as f64;\n-    let sum = l + r;\n-    if sum <= 0.0 {\n-        50.0\n-    } else {\n-        (l / sum) * 100.0\n-    }\n-}\n-\n fn ratios_for_page(v: &VoteData, page_left: &ItemId, page_right: &ItemId) -> (i32, i32) {\n     match (v.a.as_str(), v.b.as_str()) {\n         (a, b) if a == page_left.as_str() && b == page_right.as_str() => {\n@@ -94,6 +83,37 @@ fn edge_votes(group: &GroupState, left: &ItemId, right: &ItemId) -> Vec<VoteData\n         .collect()\n }\n \n+/// HUD `data-winner` value: which side the ratio favours on this page.\n+fn winner_side(r_left: i32, r_right: i32) -> &'static str {\n+    if r_left > r_right {\n+        \"left\"\n+    } else if r_right > r_left {\n+        \"right\"\n+    } else {\n+        \"even\"\n+    }\n+}\n+\n+fn winner_text(r_left: i32, r_right: i32) -> &'static str {\n+    match winner_side(r_left, r_right) {\n+        \"left\" => \"left wins\",\n+        \"right\" => \"right wins\",\n+        _ => \"tie\",\n+    }\n+}\n+\n+/// Map stored ratios to the live slider position (0 = full left, 100 = full right).\n+/// Matches `sorter_ui.js`: `left = 100 - v`, `right = v`.\n+fn slider_value_from_ratios(r_left: i32, r_right: i32) -> i32 {\n+    let l = r_left.max(0) as f64;\n+    let r = r_right.max(0) as f64;\n+    let sum = l + r;\n+    if sum <= 0.0 {\n+        return 50;\n+    }\n+    ((r / sum) * 100.0).round().clamp(0.0, 100.0) as i32\n+}\n+\n fn vote_edge_history(tree: &GlobalTree, group: &GroupState, left: &ItemId, right: &ItemId) -> Markup {\n     let mut votes = edge_votes(group, left, right);\n     votes.sort_by(|a, b| b.ts.cmp(&a.ts));\n@@ -106,17 +126,26 @@ fn vote_edge_history(tree: &GlobalTree, group: &GroupState, left: &ItemId, right\n             h3 class=\"vote-edge-history-title\" {\n                 \"votes on this pair\"\n             }\n+            p class=\"muted small vote-edge-legend\" {\n+                (format!(\"left: {legend_left} — right: {legend_right}\"))\n+            }\n             ul class=\"vote-edge-history\" {\n                 @for v in &votes {\n                     @let (r_left, r_right) = ratios_for_page(v, left, right);\n-                    @let pct = ratio_pct(r_left, r_right);\n+                    @let slider_val = slider_value_from_ratios(r_left, r_right);\n+                    @let side = winner_side(r_left, r_right);\n+                    @let label = winner_text(r_left, r_right);\n                     li class=\"vote-edge-history-row\" {\n                         div class=\"vote-edge-meta\" {\n                             span class=\"vote-edge-ratio\" { (format!(\"{}:{}\", r_left, r_right)) }\n+                            span class=\"vote-edge-winner muted small\" { \" · \" (label) }\n                         }\n-                        div class=\"ratio-bar vote-edge-bar\" aria-hidden=\"true\" {\n-                            div class=\"ratio-left\" style={(format!(\"width: {:.3}%;\", pct))} {}\n-                            div class=\"ratio-right\" style={(format!(\"width: {:.3}%;\", 100.0 - pct))} {}\n+                        label class=\"vote-hud-slider vote-edge-slider\" aria-hidden=\"true\" {\n+                            input type=\"range\" class=\"vote-edge-range\" min=\"0\" max=\"100\" value=(slider_val)\n+                                data-winner=(side)\n+                                style={(format!(\"--vote-slider-pct: {}%;\", slider_val))}\n+                                disabled\n+                                tabindex=\"-1\";\n                         }\n                     }\n                 }\n@@ -283,7 +312,6 @@ pub async fn vote_page(\n                         span class=\"vote-compare-vs\" { \"vs\" }\n                         (vote_compare_item_card(&tree, &right, \"vote-compare-right\"))\n                     }\n-                    (vote_back_nav(&parent))\n                     div id=\"vote-edge-history-region\" {\n                         (edge_history)\n                     }\n@@ -308,3 +336,66 @@ pub async fn vote_page(\n     )\n     .into_response()\n }\n+\n+#[cfg(test)]\n+mod polarity_tests {\n+    use super::*;\n+    use crate::ranking::ranked_items;\n+    use crate::reducer::GlobalTree;\n+\n+    fn id(s: &str) -> ItemId {\n+        ItemId::parse(s).unwrap()\n+    }\n+\n+    /// The page's left number must always equal the vote's weight for the\n+    /// item shown on the left, regardless of which order the vote stored a/b.\n+    #[test]\n+    fn ratios_for_page_orients_to_page_left() {\n+        let left = id(\"left_item\");\n+        let right = id(\"right_item\");\n+\n+        // Stored a == page left: keep order.\n+        let v1 = VoteData::from_recorded(1, left.as_str(), right.as_str(), 9, 1).unwrap();\n+        assert_eq!(ratios_for_page(&v1, &left, &right), (9, 1));\n+\n+        // Stored a == page right: swap so left stays left.\n+        let v2 = VoteData::from_recorded(2, right.as_str(), left.as_str(), 9, 1).unwrap();\n+        assert_eq!(ratios_for_page(&v2, &left, &right), (1, 9));\n+    }\n+\n+    #[test]\n+    fn winner_side_follows_larger_ratio() {\n+        assert_eq!(winner_side(9, 1), \"left\");\n+        assert_eq!(winner_side(1, 9), \"right\");\n+        assert_eq!(winner_side(1, 1), \"even\");\n+    }\n+\n+    #[test]\n+    fn slider_value_matches_hud_mapping() {\n+        assert_eq!(slider_value_from_ratios(9, 1), 10);\n+        assert_eq!(slider_value_from_ratios(1, 4), 80);\n+        assert_eq!(slider_value_from_ratios(1, 1), 50);\n+    }\n+\n+    /// End-to-end polarity invariant: a vote that favours the LEFT item (higher\n+    /// `ratio_left`, recorded as the RPC's `a`) must make that item rank #1.\n+    /// This is the property the UI must preserve: sliding left => left wins.\n+    #[test]\n+    fn sliding_left_makes_left_item_win_ranking() {\n+        let parent = id(\"scope\");\n+        let left = id(\"left_item\");\n+        let right = id(\"right_item\");\n+\n+        // Slider dragged left yields e.g. 9:1 with a = left item.\n+        let vote = VoteData::from_recorded(1, left.as_str(), right.as_str(), 9, 1).unwrap();\n+        let mut tree = GlobalTree::new();\n+        tree.apply_vote(&parent, vote);\n+\n+        let group = &tree.get(&parent).unwrap().local_ranking;\n+        let ranked = ranked_items(group);\n+        assert_eq!(\n+            ranked[0].item, left,\n+            \"left item should rank first when ratio favours the left\"\n+        );\n+    }\n+}\ndiff --git a/server/static/sorter.css b/server/static/sorter.css\nindex 5da967e8bfddc2bc34662fced841860f63f1ef36..bdd3d931365703705be08537a07f3ccaf975d3ea 100644\n--- a/server/static/sorter.css\n+++ b/server/static/sorter.css\n@@ -124,7 +124,7 @@ code {\n   z-index: 1;\n   box-shadow:\n     inset 0 0 0 3px var(--accent),\n-    inset 0 0 0 5px color-mix(in oklch, var(--rank-fg) 70%, transparent);\n+    inset 0 0 0 5px color-mix(in oklch, var(--rank-fg, var(--fg)) 70%, transparent);\n   filter: saturate(1.15) brightness(1.04);\n }\n \n@@ -320,7 +320,7 @@ h1 {\n   grid-template-columns: var(--vote-ratio-col) minmax(0, 1fr) var(--vote-actions-col);\n   gap: 0.5rem 0.65rem;\n   align-items: center;\n-  --vote-ratio-col: 3.25rem;\n+  --vote-ratio-col: 12.5rem;\n   --vote-actions-col: 11.5rem;\n }\n \n@@ -332,7 +332,7 @@ h1 {\n   margin: 0;\n   width: var(--vote-ratio-col);\n   min-width: var(--vote-ratio-col);\n-  text-align: center;\n+  text-align: right;\n   white-space: nowrap;\n }\n \n@@ -474,6 +474,16 @@ h1 {\n   --vote-track-muted: color-mix(in oklch, var(--muted) 55%, var(--bg));\n }\n \n+/* Center-anchored fill: the accent grows from the midpoint toward the thumb,\n+   so the highlighted mass always sits on the *winning* side (the side the\n+   thumb was dragged toward). Left winning => accent on the left half. */\n+.vote-hud-slider input[type=\"range\"][data-winner=\"even\"]::-webkit-slider-runnable-track {\n+  height: 0.65rem;\n+  border-radius: 0;\n+  border: 2px solid var(--border);\n+  background: var(--vote-track-muted);\n+}\n+\n .vote-hud-slider input[type=\"range\"][data-winner=\"left\"]::-webkit-slider-runnable-track {\n   height: 0.65rem;\n   border-radius: 0;\n@@ -483,7 +493,9 @@ h1 {\n     var(--vote-track-muted) 0%,\n     var(--vote-track-muted) var(--vote-slider-pct, 50%),\n     var(--accent) var(--vote-slider-pct, 50%),\n-    var(--accent) 100%\n+    var(--accent) 50%,\n+    var(--vote-track-muted) 50%,\n+    var(--vote-track-muted) 100%\n   );\n }\n \n@@ -493,7 +505,9 @@ h1 {\n   border: 2px solid var(--border);\n   background: linear-gradient(\n     to right,\n-    var(--accent) 0%,\n+    var(--vote-track-muted) 0%,\n+    var(--vote-track-muted) 50%,\n+    var(--accent) 50%,\n     var(--accent) var(--vote-slider-pct, 50%),\n     var(--vote-track-muted) var(--vote-slider-pct, 50%),\n     var(--vote-track-muted) 100%\n@@ -513,26 +527,35 @@ h1 {\n }\n \n .vote-hud-slider input[type=\"range\"][data-winner=\"left\"]::-moz-range-track,\n-.vote-hud-slider input[type=\"range\"][data-winner=\"right\"]::-moz-range-track {\n+.vote-hud-slider input[type=\"range\"][data-winner=\"right\"]::-moz-range-track,\n+.vote-hud-slider input[type=\"range\"][data-winner=\"even\"]::-moz-range-track {\n   height: 0.65rem;\n   border-radius: 0;\n   border: 2px solid var(--border);\n }\n \n+.vote-hud-slider input[type=\"range\"][data-winner=\"even\"]::-moz-range-track {\n+  background: var(--vote-track-muted);\n+}\n+\n .vote-hud-slider input[type=\"range\"][data-winner=\"left\"]::-moz-range-track {\n   background: linear-gradient(\n     to right,\n     var(--vote-track-muted) 0%,\n     var(--vote-track-muted) var(--vote-slider-pct, 50%),\n     var(--accent) var(--vote-slider-pct, 50%),\n-    var(--accent) 100%\n+    var(--accent) 50%,\n+    var(--vote-track-muted) 50%,\n+    var(--vote-track-muted) 100%\n   );\n }\n \n .vote-hud-slider input[type=\"range\"][data-winner=\"right\"]::-moz-range-track {\n   background: linear-gradient(\n     to right,\n-    var(--accent) 0%,\n+    var(--vote-track-muted) 0%,\n+    var(--vote-track-muted) 50%,\n+    var(--accent) 50%,\n     var(--accent) var(--vote-slider-pct, 50%),\n     var(--vote-track-muted) var(--vote-slider-pct, 50%),\n     var(--vote-track-muted) 100%\n@@ -573,20 +596,23 @@ h1 {\n   margin-bottom: 0.25rem;\n }\n \n-.ratio-bar {\n-  display: flex;\n-  height: 8px;\n-  border-radius: 0;\n-  overflow: hidden;\n-  background: var(--border);\n+/* Read-only sliders in vote history — same track/thumb styling as the HUD. */\n+.vote-edge-slider {\n+  display: block;\n+  margin-top: 0.15rem;\n }\n \n-.ratio-left {\n-  background: var(--accent);\n+.vote-edge-slider input[type=\"range\"] {\n+  pointer-events: none;\n+  cursor: default;\n+}\n+\n+.vote-edge-slider input[type=\"range\"]:disabled {\n+  opacity: 1;\n }\n \n-.ratio-right {\n-  background: var(--muted);\n+.vote-edge-legend {\n+  margin: 0 0 0.5rem;\n }\n \n @media (max-width: 900px) {\ndiff --git a/server/static/sorter_ui.js b/server/static/sorter_ui.js\nindex f665b45f4fd4771427dc4c37e563e4976873beee..5d6d765f69f301722e59248c76e919043559fb78 100644\n--- a/server/static/sorter_ui.js\n+++ b/server/static/sorter_ui.js\n@@ -138,6 +138,10 @@\n     function update() {\n       var v = parseInt(slider.value, 10);\n       if (!Number.isFinite(v)) v = 50;\n+      // Slider position drives the colored fill (a center-anchored bar that\n+      // grows toward whichever side is winning — see sorter.css). Sliding the\n+      // thumb left raises the left number; left winning keeps the accent mass\n+      // on the left, matching the \"votes on this pair\" history bars.\n       slider.style.setProperty('--vote-slider-pct', v + '%');\n       slider.setAttribute('aria-valuenow', String(v));\n       var left = Math.max(1, 100 - v);\n@@ -147,8 +151,12 @@\n       right = right / divisor;\n       if (leftInput) leftInput.value = String(left);\n       if (rightInput) rightInput.value = String(right);\n-      if (ratioDisplay) ratioDisplay.textContent = left + ':' + right;\n-      slider.dataset.winner = left >= right ? 'left' : 'right';\n+      var winner = left > right ? 'left' : (right > left ? 'right' : 'even');\n+      slider.dataset.winner = winner;\n+      if (ratioDisplay) {\n+        var label = winner === 'even' ? 'tie' : (winner + ' wins');\n+        ratioDisplay.textContent = left + ':' + right + ' \\u00b7 ' + label;\n+      }\n     }\n     slider.addEventListener('input', update);\n     update();\n","role":"user"}],"model":"~x-ai/grok-latest"}