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:
[0bebe819] Unify kaocha test discovery to one auto-discovered suite.

Replace the two hand-enumerated suites (:http-integration, :browser) with
a single :all suite that picks up every test.* namespace under test/. New
test files now run automatically without touching tests.edn — needed for
the test.ranking namespace added alongside the #146 fix, and for any
future tests.

Both ./TEST.sh and CI (.github/workflows/ci.yml) invoke
`clojure -M:kaocha`, so both pick up the new suite without changes.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Side A — unified diff (full patch):
diff --git a/tests.edn b/tests.edn
index 5e2b0433a66c51806d08ef38d691259cfccd1fe0..e51ffcc81eeae6f41c85d1bfc5ba32f592cc5818 100644
--- a/tests.edn
+++ b/tests.edn
@@ -1,30 +1,14 @@
 #kaocha/v1
-{:tests
- [{:id :http-integration
-   :test-paths ["test"]
-   :source-paths ["."]
-   :ns-patterns ["^test\\.integration$"
-                 "^test\\.auth$"
-                 "^test\\.grants$"
-                 "^test\\.invites$"
-                 "^test\\.room-list$"]
-   :kaocha.filter/skip-meta [:skip]
-   :parallel? false}
-  {:id :browser
-   :test-paths ["test"]
-   :source-paths ["."]
-   :ns-patterns ["^test\\.browser-sse$"
-                 "^test\\.browser-ui-morph$"
-                 "^test\\.browser-post-redact$"
-                 "^test\\.browser-room-delete$"
-                 "^test\\.browser-public-garden$"
-                 "^test\\.browser-redact-thread-index$"
-                 "^test\\.browser-garden-pin$"
-                 "^test\\.browser-vote-compare$"
-                 "^test\\.browser-github-resolver$"]
-   :kaocha.filter/skip-meta [:skip]
-   :parallel? false}]
- :plugins [:kaocha.plugin/junit-xml]
- :kaocha.plugin.junit-xml/target-file "target/kaocha-junit.xml"
- :kaocha.plugin.junit-xml/add-location-metadata? true
- :reporter kaocha.report.progress/report}
+ {:tests
+  [{:id :all
+    :test-paths ["test"]
+    :source-paths ["."]
+   ;; Pick up every test.* namespace under test/. New files don't need to be
+   ;; enumerated here — drop them in test/ with `(ns test.foo …)` and they run.
+    :ns-patterns ["^test\\..+"]
+    :kaocha.filter/skip-meta [:skip]
+    :parallel? false}]
+  :plugins [:kaocha.plugin/junit-xml]
+  :kaocha.plugin.junit-xml/target-file "target/kaocha-junit.xml"
+  :kaocha.plugin.junit-xml/add-location-metadata? true
+  :reporter kaocha.report.progress/report}


Side B — contributor: tommy-mor
Side B — commit message:
[7964b28f] fix

Side B — unified diff (full patch):
diff --git a/Cargo.lock b/Cargo.lock
index 8c43fb75c472b102e6e1d3b837dce3355be898f2..e55d87f32ab32064686431c7082ef8c9ca872d63 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -923,6 +923,15 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
+dependencies = [
+ "zerocopy",
+]
+
 [[package]]
 name = "prettyplease"
 version = "0.2.37"
@@ -980,6 +989,36 @@ version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
+[[package]]
+name = "rand"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5ca0ecfa931c29007047d1bc58e623ab12e5590e8c7cc53200d5202b69266d8a"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom 0.2.17",
+]
+
 [[package]]
 name = "regex-automata"
 version = "0.4.14"
@@ -1270,6 +1309,7 @@ dependencies = [
  "dotenvy",
  "futures-util",
  "maud",
+ "rand",
  "reqwest",
  "serde",
  "serde_json",
@@ -1280,6 +1320,7 @@ dependencies = [
  "tower-http 0.5.2",
  "tracing",
  "tracing-subscriber",
+ "urlencoding",
 ]
 
 [[package]]
@@ -1656,6 +1697,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "urlencoding"
+version = "2.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "daf8dba3b7eb870caf1ddeed7bc9d2a049f3cfdfae7cb521b087cc33ae4c49da"
+
 [[package]]
 name = "utf8_iter"
 version = "1.0.4"
@@ -2052,6 +2099,26 @@ dependencies = [
  "synstructure",
 ]
 
+[[package]]
+name = "zerocopy"
+version = "0.8.50"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3b065d4f0e55f82fae73202e189638116a87c55ab6b8e6c2721e13dd9d854ad1"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.50"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b631b19d36a892ab55420c92dbc83ccd79274f25be714855d3074aa71cab639"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "zerofrom"
 version = "0.1.8"
diff --git a/server/Cargo.toml b/server/Cargo.toml
index c940acb687fb141d21760a3d6656172013cf6f41..6fb7bf52fa58f46f5e8fb0f7fd395247b57506d7 100644
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -20,6 +20,8 @@ reqwest = { version = "0.12", features = ["json"] }
 dotenvy = "0.15"
 async-stream = "0.3"
 futures-util = { version = "0.3", default-features = false, features = ["std"] }
+rand = "0.8"
+urlencoding = "2"
 
 [dev-dependencies]
 reqwest = { version = "0.12", features = ["json"] }
diff --git a/server/src/api/ui_html.rs b/server/src/api/ui_html.rs
index e649a7d192feade465e19ce6187a829f6ec74372..06001212820101e0cc953d3687dea64f85e60787 100644
--- a/server/src/api/ui_html.rs
+++ b/server/src/api/ui_html.rs
@@ -47,6 +47,7 @@ pub async fn post_ui_html(
             ratio_left,
             ratio_right,
             scope,
+            next,
         } => {
             let parent = parent_from_scope(&scope);
             if let Err(e) = state
@@ -56,9 +57,19 @@ pub async fn post_ui_html(
                 return ui_js_warn(&e).into_response();
             }
             let tree = state.tree.read().await;
+            if !next.trim().is_empty() {
+                drop(tree);
+                return JsBuilder::new()
+                    .raw(&format!(
+                        "window.location.href={};",
+                        js_string_literal(next.trim())
+                    ))
+                    .into_response();
+            }
             let empty = crate::reducer::NodeState::default();
             let node = tree.get(&parent).unwrap_or(&empty);
             let panel = ranking_panel(&parent, node, &tree);
+            drop(tree);
             JsBuilder::new()
                 .morph_selector("#ranking-panel", panel)
                 .into_response()
@@ -126,6 +137,7 @@ mod tests {
                 ratio_left: 3,
                 ratio_right: 1,
                 scope: String::new(),
+                next: String::new(),
             }
         );
     }
diff --git a/server/src/form_template.rs b/server/src/form_template.rs
index b9bc3982a125e94e67c99175ea9055979541abba..bd4a7195a6eaabfed55333bab5640708ea108b81 100644
--- a/server/src/form_template.rs
+++ b/server/src/form_template.rs
@@ -7,19 +7,30 @@ pub fn template_json_compact<T: Serialize>(v: &T) -> serde_json::Result<String>
     serde_json::to_string(v)
 }
 
-/// Recursively walk the JSON AST and replace `{"$form": "key"}` with the submitted
-/// string for `key` (empty if missing). Other keys are unchanged.
+/// Recursively walk the JSON AST and replace form holes with submitted values.
+///
+/// - `{"$form": "key"}` → string (empty if missing)
+/// - `{"$form:i32": "key"}` → JSON number (0 if missing or unparseable)
 pub fn substitute_form_vars(val: &mut Value, form_data: &HashMap<String, String>) {
     match val {
         Value::Object(map) => {
             if map.len() == 1 {
-                if let Some(Value::String(field_name)) = map.get("$form") {
-                    let submitted = form_data
-                        .get(field_name.as_str())
-                        .map(|s| s.as_str())
-                        .unwrap_or("");
-                    *val = Value::String(submitted.to_string());
-                    return;
+                if let Some((hole_key, Value::String(field_name))) = map.iter().next() {
+                    if let Some(form_type) = hole_key.strip_prefix("$form") {
+                        let submitted = form_data
+                            .get(field_name.as_str())
+                            .map(|s| s.as_str())
+                            .unwrap_or("");
+                        *val = match form_type {
+                            "" => Value::String(submitted.to_string()),
+                            ":i32" => {
+                                let n: i32 = submitted.trim().parse().unwrap_or(0);
+                                Value::Number(n.into())
+                            }
+                            _ => Value::String(submitted.to_string()),
+                        };
+                        return;
+                    }
                 }
             }
             for v in map.values_mut() {
@@ -62,6 +73,45 @@ mod tests {
         text: String,
     }
 
+    #[test]
+    fn i32_holes_become_numbers() {
+        let json = r#"{
+            "ratio_left": {"$form:i32": "ratio_left"},
+            "ratio_right": {"$form:i32": "ratio_right"}
+        }"#;
+        let mut form = HashMap::new();
+        form.insert("ratio_left".into(), "75".into());
+        form.insert("ratio_right".into(), "25".into());
+        let v = fill_template_from_form(json, &form).unwrap();
+        assert_eq!(v["ratio_left"], 75);
+        assert_eq!(v["ratio_right"], 25);
+
+        #[derive(Debug, Deserialize, PartialEq, Eq)]
+        struct Ratios {
+            ratio_left: i32,
+            ratio_right: i32,
+        }
+        let r: Ratios = serde_json::from_value(v).unwrap();
+        assert_eq!(
+            r,
+            Ratios {
+                ratio_left: 75,
+                ratio_right: 25,
+            }
+        );
+    }
+
+    #[test]
+    fn i32_hole_missing_or_bad_defaults_to_zero() {
+        let json = r#"{"n": {"$form:i32": "missing"}}"#;
+        let v = fill_template_from_form(json, &HashMap::new()).unwrap();
+        assert_eq!(v["n"], 0);
+        let mut form = HashMap::new();
+        form.insert("missing".into(), "nope".into());
+        let v = fill_template_from_form(json, &form).unwrap();
+        assert_eq!(v["n"], 0);
+    }
+
     #[test]
     fn holes_become_strings() {
         let json = r#"{
diff --git a/server/src/html/mod.rs b/server/src/html/mod.rs
index 3bf9fc7e92e50beed24e2c25106a77421038c90b..61cdbc094819ddedb755572c59456ec0d6617619 100644
--- a/server/src/html/mod.rs
+++ b/server/src/html/mod.rs
@@ -20,6 +20,8 @@ use crate::{
     ui_action::UI_RPC_FIELD,
 };
 
+pub mod vote;
+
 const SORTER_CSS: &str = include_str!("../../static/sorter.css");
 const SORTER_UI_JS: &str = include_str!("../../static/sorter_ui.js");
 
@@ -131,7 +133,7 @@ fn layout(title: &str, body: Markup, views: u64) -> Markup {
     }
 }
 
-fn item_href(id: &ItemId) -> String {
+pub(crate) fn item_href(id: &ItemId) -> String {
     id.browse_href()
 }
 
@@ -309,11 +311,23 @@ async fn item_page(state: AppState, uri: Uri, item: ItemId) -> Markup {
     let empty_node = NodeState::default();
     let node = tree.get(&item).unwrap_or(&empty_node);
 
+    let child_count = node.children.len();
+    let vote_link = if child_count >= 2 {
+        Some(vote::vote_href(&item))
+    } else {
+        None
+    };
+
     let body = html! {
         h1 { "sorter" }
         (input_panel("", None))
         (breadcrumb_path(&item))
         (entity_section(&item, node, false))
+        @if let Some(href) = vote_link {
+            p class="vote-cta" {
+                a class="btn-primary" href=(href) data-testid="vote-children" { "Vote on children" }
+            }
+        }
         (ranking_panel(&item, node, &tree))
     };
     layout("sorter2", body, views)
diff --git a/server/src/lib.rs b/server/src/lib.rs
index da5f3ebecec1794b05a2a69cc78379551b2ad769..7f7e28c8ac3758de87f1f8e073b24be4132d38da 100644
--- a/server/src/lib.rs
+++ b/server/src/lib.rs
@@ -4,6 +4,7 @@ pub mod events;
 pub mod fetch;
 pub mod form_template;
 pub mod html;
+pub mod pair;
 pub mod parser;
 pub mod path_types;
 pub mod ranking;
@@ -33,6 +34,7 @@ pub fn create_app(state: AppState) -> Router {
         .route("/static/:filename", get(crate::html::serve_static))
         .route("/~/*item_path", get(crate::html::browse))
         .route("/", get(crate::html::home))
+        .route("/vote", get(crate::html::vote::vote_page))
         .route("/ui", post(crate::api::ui_html::post_ui_html))
         .with_state(state)
         .layer(TraceLayer::new_for_http())
diff --git a/server/src/ui_action.rs b/server/src/ui_action.rs
index 2047713762c932ac9bc325fe15624f2aecb3364d..53581e1362bfcc5dfb4ae3069c41ea6f7be41437 100644
--- a/server/src/ui_action.rs
+++ b/server/src/ui_action.rs
@@ -31,6 +31,9 @@ pub enum HtmlUiAction {
         /// Parent node [`ItemId`] string; empty = tree root.
         #[serde(default)]
         scope: String,
+        /// After vote, navigate here (vote compare page).
+        #[serde(default)]
+        next: String,
     },
     /// Parse pasted Reddit URL/path; redirect to subreddit ranking on success.
     ParseQuery {
@@ -70,6 +73,36 @@ pub fn parse_html_ui_from_form(
 mod tests {
     use super::*;
 
+    #[test]
+    fn record_vote_round_trip_with_typed_ratio_holes() {
+        let template = serde_json::json!({
+            "action": "record_vote",
+            "a": "x",
+            "b": "y",
+            "ratio_left": {"$form:i32": "ratio_left"},
+            "ratio_right": {"$form:i32": "ratio_right"},
+            "scope": "parent",
+        });
+        let mut form = HashMap::new();
+        form.insert(
+            UI_RPC_FIELD.to_string(),
+            serde_json::to_string(&template).unwrap(),
+        );
+        form.insert("ratio_left".into(), "60".into());
+        form.insert("ratio_right".into(), "40".into());
+        assert_eq!(
+            parse_html_ui_from_form(&form).unwrap(),
+            HtmlUiAction::RecordVote {
+                a: "x".into(),
+                b: "y".into(),
+                ratio_left: 60,
+                ratio_right: 40,
+                scope: "parent".into(),
+                next: String::new(),
+            }
+        );
+    }
+
     #[test]
     fn record_vote_round_trip_with_form_holes() {
         let template = serde_json::json!({
@@ -96,6 +129,7 @@ mod tests {
                 ratio_left: 2,
                 ratio_right: 1,
                 scope: "amitheasshole".into(),
+                next: String::new(),
             }
         );
     }
@@ -122,6 +156,7 @@ mod tests {
                 ratio_left: 2,
                 ratio_right: 1,
                 scope: String::new(),
+                next: String::new(),
             }
         );
     }
diff --git a/server/static/sorter.css b/server/static/sorter.css
index 021918f8e778b84e4b3eac8559fab7d223a3d490..3c2cec5cb5094013387147c621d75bd341bc06cc 100644
--- a/server/static/sorter.css
+++ b/server/static/sorter.css
@@ -224,4 +224,148 @@ code {
 
 h1 {
   margin: 0;
+}
+
+.vote-cta {
+  margin: 0.75rem 0;
+}
+
+.vote-compare-shell {
+  max-width: 960px;
+}
+
+.vote-compare-scope {
+  margin: 0.5rem 0 1rem;
+}
+
+.vote-compare-pair {
+  display: grid;
+  grid-template-columns: 1fr auto 1fr;
+  gap: 1rem;
+  align-items: start;
+  margin: 1rem 0;
+}
+
+.vote-compare-vs {
+  align-self: center;
+  font-size: 1.25rem;
+  color: var(--muted);
+  font-weight: 600;
+}
+
+.vote-compare-side {
+  background: var(--panel);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  padding: 1rem;
+  min-height: 120px;
+}
+
+.vote-compare-item {
+  color: var(--accent);
+  text-decoration: none;
+  display: block;
+}
+
+.vote-compare-item:hover {
+  text-decoration: underline;
+}
+
+.vote-compare-figure {
+  margin: 0.75rem 0 0;
+}
+
+.vote-compare-image {
+  display: block;
+  max-width: 100%;
+  height: auto;
+  border-radius: 6px;
+  border: 1px solid var(--border);
+}
+
+.vote-compare-item-body {
+  margin-top: 0.75rem;
+  font-size: 0.9rem;
+}
+
+.vote-compare-nav {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 1rem;
+  margin: 1rem 0;
+}
+
+.vote-compare-next {
+  color: var(--accent);
+  text-decoration: none;
+}
+
+.vote-compare-next.is-disabled {
+  color: var(--muted);
+}
+
+.vote-compare-back {
+  text-decoration: none;
+}
+
+.vote-compare-back:hover {
+  text-decoration: underline;
+}
+
+.vote-compare-slider-label {
+  display: grid;
+  grid-template-columns: 1fr auto 1fr;
+  gap: 0.75rem;
+  align-items: center;
+  margin: 1.25rem 0;
+}
+
+.vote-compare-slider-label input[type="range"] {
+  width: 100%;
+  min-width: 160px;
+}
+
+#vote-slider-left-label {
+  text-align: right;
+}
+
+#vote-slider-right-label {
+  text-align: left;
+}
+
+.vote-edge-history-title {
+  margin: 1.5rem 0 0.5rem;
+  font-size: 1rem;
+}
+
+.vote-edge-history {
+  list-style: none;
+  padding: 0;
+  margin: 0;
+}
+
+.vote-edge-history-row {
+  margin-bottom: 0.75rem;
+}
+
+.vote-edge-meta {
+  font-size: 0.875rem;
+  margin-bottom: 0.25rem;
+}
+
+.ratio-bar {
+  display: flex;
+  height: 8px;
+  border-radius: 4px;
+  overflow: hidden;
+  background: var(--border);
+}
+
+.ratio-left {
+  background: var(--accent);
+}
+
+.ratio-right {
+  background: var(--muted);
 }
\ No newline at end of file
diff --git a/server/static/sorter_ui.js b/server/static/sorter_ui.js
index 62c9158ecb3c2140b83efd2b27ea706a9e0ae127..c8d7c3ef2413399ced7898a7edb3e7a2c8e16163 100644
--- a/server/static/sorter_ui.js
+++ b/server/static/sorter_ui.js
@@ -81,7 +81,22 @@
     });
   }
 
+  function initVoteSlider() {
+    var slider = document.getElementById('vote-preference-slider');
+    if (!slider) return;
+    var leftInput = document.getElementById('vote-ratio-left');
+    var rightInput = document.getElementById('vote-ratio-right');
+    function update() {
+      var v = parseInt(slider.value, 10);
+      if (leftInput) leftInput.value = String(v);
+      if (rightInput) rightInput.value = String(100 - v);
+    }
+    slider.addEventListener('input', update);
+    update();
+  }
+
   function initSorterUi() {
+    initVoteSlider();
     document.addEventListener('submit', async function (e) {
       var f = e.target;
       if (!f || f.tagName !== 'FORM') return;
@@ -89,10 +104,11 @@
       if (f.getAttribute('data-navigate') === 'full') return;
       e.preventDefault();
       await postUiForm(f);
-      if (f.id === 'vote-form') {
+      if (f.id === 'vote-form' || f.id === 'vote-compare-form') {
         f.reset();
-        var firstField = f.querySelector('input[type="text"]');
-        if (firstField) firstField.focus();
+        var slider = f.querySelector('#vote-preference-slider');
+        if (slider) slider.value = '50';
+        initVoteSlider();
       }
     });
   }