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:
[7964b28f] fix

Side A — 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();
       }
     });
   }


Side B — contributor: tommy-mor
Side B — commit message:
[bda5f8aa] Remove legacy evidence projection; Evidence envelopes only.

Epoch and commit pages no longer invent history from bare GitDiscovery rows. Production ledger will be wiped to re-emit under the current schema.

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

Side B — unified diff (full patch):
diff --git a/constitution.py b/constitution.py
index 4dd5b9dfbba231d46289c490f91b1dd5b1018bcf..26ba130e885e0e69fb7874ca5c3f07f42100a150 100644
--- a/constitution.py
+++ b/constitution.py
@@ -210,10 +210,10 @@ class Emission:
     distributions: dict   # author -> amount str
     ranking: dict         # author -> score str
     models_used: list
-    discovery_snapshot_id: str = ""  # empty only for pre-discovery ledger history
-    evidence_schema_version: int = 1
-    ranking_run_id: str = ""
-    ranking_event_id: str = ""
+    discovery_snapshot_id: str
+    evidence_schema_version: int
+    ranking_run_id: str
+    ranking_event_id: str
 
 
 @event
@@ -502,26 +502,6 @@ def _epochs_in_ledger() -> list[int]:
     return sorted(epochs)
 
 
-def _legacy_commit_row(commit_id: str) -> tuple[GitDiscovery | None, dict | None]:
-    for discovery in store.read():
-        if not isinstance(discovery, GitDiscovery):
-            continue
-        for commit in discovery.commits:
-            if commit_id_for_oid(commit["oid"]) == commit_id:
-                return discovery, commit
-    return None, None
-
-
-def _legacy_observation(commit_id: str) -> tuple[GitDiscovery | None, dict | None]:
-    for discovery in store.read():
-        if not isinstance(discovery, GitDiscovery):
-            continue
-        for obs in discovery.observations:
-            if commit_id_for_oid(obs["oid"]) == commit_id:
-                return discovery, obs
-    return None, None
-
-
 def build_pairwise_prompt(side_a: dict, side_b: dict) -> str:
     return f"""You are ranking contributions to an open source project.
 Compare these two sides (each may be one or more commits). Decide which side contributed more.
@@ -2040,7 +2020,7 @@ def _strip_heavy_fields(obj: dict) -> dict:
 
 @app.get("/api/ledger")
 async def get_ledger(offset: int = 0, limit: int = 100, full: int = 0):
-    """List of ledger dicts (backward-compatible). Heavy blobs stripped unless full=1."""
+    """List of ledger dicts. Heavy blobs stripped unless full=1."""
     limit = max(1, min(limit, 500))
     rows = []
     for e in store.read()[offset:offset + limit]:
@@ -2274,23 +2254,25 @@ async def epochs_index():
     epochs = _epochs_in_ledger()
     rows = []
     for epoch in epochs:
-        discovery = _discovery_for_epoch(epoch)
         emission = _emission_for_epoch(epoch)
-        evidence_n = sum(
-            1 for e in evidence_by_kind() if e.epoch == epoch
+        evidence_n = sum(1 for e in evidence_by_kind() if e.epoch == epoch)
+        disc = next(
+            (
+                e for e in evidence_by_kind("git.discovery_completed")
+                if e.epoch == epoch
+            ),
+            None,
         )
         detail = []
-        if discovery:
+        if disc:
             detail.append(
-                f"{len(discovery.commits)} eligible / "
-                f"{len(discovery.observations)} observed"
+                f"{disc.payload.get('eligible_count', 0)} eligible / "
+                f"{disc.payload.get('observation_count', 0)} observed"
             )
         if emission:
             detail.append(f"emitted {emission.total_emitted}")
         if evidence_n:
             detail.append(f"{evidence_n} evidence events")
-        elif discovery or emission:
-            detail.append("legacy (no Evidence envelopes)")
         rows.append(["li",
             _a(_evidence_path("epoch", str(epoch)), f"epoch {epoch}"),
             " — ",
@@ -2307,37 +2289,37 @@ async def epochs_index():
 
 @app.get("/epochs/{epoch}")
 async def epoch_detail(epoch: int):
-    discovery = _discovery_for_epoch(epoch)
     emission = _emission_for_epoch(epoch)
     evidence_rows = [e for e in evidence_by_kind() if e.epoch == epoch]
+    if not evidence_rows and emission is None:
+        return _evidence_page(f"epoch {epoch}", [
+            _evidence_nav(),
+            ["h1", f"epoch {epoch}"],
+            ["p.note", "No evidence for this epoch."],
+        ])
+
     commit_evs = [e for e in evidence_rows if e.kind == "git.commit"]
     comparison_evs = [e for e in evidence_rows if e.kind == "comparison.input"]
     judgment_evs = [e for e in evidence_rows if e.kind == "llm.judgment"]
+    discovery_ev = next(
+        (e for e in evidence_rows if e.kind == "git.discovery_completed"), None
+    )
     ranking_started = next(
         (e for e in evidence_rows if e.kind == "ranking.started"), None
     )
     ranking_completed = next(
         (e for e in evidence_rows if e.kind == "ranking.completed"), None
     )
-    legacy = not evidence_rows and (discovery is not None or emission is not None)
-
-    commit_links: list[tuple[str, str]] = []
-    if commit_evs:
-        for e in commit_evs:
-            cid = e.payload.get("commit_id") or ""
-            label = (
-                f"{e.payload.get('oid', cid)[:24]} "
-                f"({e.payload.get('contributor', '?')})"
-            )
-            commit_links.append((label, _evidence_path("commit", cid)))
-    elif discovery:
-        for c in discovery.commits:
-            cid = commit_id_for_oid(c["oid"])
-            commit_links.append((
-                f"{c['oid'][:24]} ({c.get('contributor', '?')})",
-                _evidence_path("commit", cid),
-            ))
 
+    commit_links = [
+        (
+            f"{e.payload.get('oid', e.payload.get('commit_id', ''))[:24]} "
+            f"({e.payload.get('contributor', '?')})",
+            _evidence_path("commit", e.payload["commit_id"]),
+        )
+        for e in commit_evs
+        if e.payload.get("commit_id")
+    ]
     comparison_links = [
         (
             e.payload.get("summary") or e.payload.get("comparison_id", e.event_id),
@@ -2360,16 +2342,13 @@ async def epoch_detail(epoch: int):
     ]
 
     excluded = []
-    if discovery:
-        for obs in discovery.observations:
+    if discovery_ev:
+        for obs in discovery_ev.payload.get("observations") or []:
             if obs.get("eligible"):
                 continue
             oid = obs.get("oid", "?")
             reason = obs.get("exclusion_reason") or "excluded"
-            excluded.append(["li",
-                f"{oid[:28]} — {reason} — ",
-                ["span.note", "legacy evidence unavailable"],
-            ])
+            excluded.append(["li", f"{oid[:28]} — {reason}"])
 
     ranking_nodes: list = []
     if ranking_completed:
@@ -2388,21 +2367,10 @@ async def epoch_detail(epoch: int):
                 indent=2, sort_keys=True,
             )],
         ]
-    elif emission:
-        if legacy and len(emission.ranking or {}) <= 1:
-            ranking_nodes.append(["p.note",
-                "Single-contributor epoch — no LLM judgments."
-            ])
-        ranking_nodes.extend([
-            ["p", "Projected from Emission (no ranking Evidence event)."],
-            ["pre.blob", json.dumps(emission.ranking, indent=2, sort_keys=True)],
-        ])
+    elif ranking_started:
+        ranking_nodes = [["p.note", f"Ranking started: {ranking_started.event_id}"]]
     else:
-        ranking_nodes = [["p.note", "No ranking recorded."]]
-    if ranking_started and not ranking_completed:
-        ranking_nodes.insert(0, ["p.note",
-            f"Ranking started: {ranking_started.event_id}"
-        ])
+        ranking_nodes = [["p.note", "No ranking evidence."]]
 
     if emission:
         emission_node = _dl_rows([
@@ -2411,44 +2379,41 @@ async def epoch_detail(epoch: int):
             ("pool_after", emission.pool_after),
             ("discovery_snapshot_id", emission.discovery_snapshot_id),
             ("ranking_run_id", emission.ranking_run_id or None),
+            ("ranking_event_id", emission.ranking_event_id or None),
             ("models_used", ", ".join(emission.models_used or [])),
             ("distributions", json.dumps(emission.distributions, sort_keys=True)),
         ])
     else:
         emission_node = ["p.note", "No emission for this epoch."]
 
-    single_contributor = False
-    if discovery:
-        single_contributor = len({c.get("contributor") for c in discovery.commits}) <= 1
-    elif emission:
-        single_contributor = len(emission.ranking or {}) <= 1
+    contributors = {
+        e.payload.get("contributor")
+        for e in commit_evs
+        if e.payload.get("contributor")
+    }
+    no_comparisons_note = "No comparisons."
+    if len(contributors) <= 1:
+        no_comparisons_note += " Single-contributor — no LLM judgments."
 
     body = [
         _evidence_nav(),
         ["div.eyebrow", f"epoch {epoch}"],
         ["h1", f"epoch {epoch}"],
     ]
-    if legacy:
-        body.append(["p.note",
-            "Legacy epoch: projected from GitDiscovery/Emission without Evidence "
-            "envelopes. Eligible commits use discovery patches; discarded observation "
-            "metadata is marked legacy evidence unavailable. Single-contributor "
-            "epochs have no LLM judgments."
-        ])
-    if discovery:
+    if discovery_ev:
         body.extend([
             ["h2", "discovery"],
             _dl_rows([
-                ("snapshot_id", discovery.snapshot_id),
-                ("config_digest", discovery.config_digest),
-                ("initial_snapshot", discovery.initial_snapshot),
-                ("observations", len(discovery.observations)),
-                ("eligible", len(discovery.commits)),
+                ("snapshot_id", discovery_ev.payload.get("snapshot_id")),
+                ("config_digest", discovery_ev.payload.get("config_digest")),
+                ("observations", discovery_ev.payload.get("observation_count")),
+                ("eligible", discovery_ev.payload.get("eligible_count")),
+                ("event", _a(
+                    _evidence_path("event", discovery_ev.event_id),
+                    discovery_ev.event_id,
+                )),
             ]),
         ])
-    no_comparisons_note = "No comparisons."
-    if single_contributor:
-        no_comparisons_note += " Single-contributor — no LLM judgments."
     body.extend([
         ["h2", "commits"],
         _link_list(commit_links),
@@ -2471,92 +2436,42 @@ async def epoch_detail(epoch: int):
 @app.get("/commits/{commit_id}")
 async def commit_detail(commit_id: str):
     ev = find_evidence_payload("git.commit", "commit_id", commit_id)
-    discovery, legacy_row = (None, None)
     if not ev:
-        discovery, legacy_row = _legacy_commit_row(commit_id)
-    if not ev and not legacy_row:
-        discovery, obs = _legacy_observation(commit_id)
-        if obs is not None:
-            epoch = discovery.epoch if discovery else "?"
-            return _evidence_page(f"commit {commit_id[:24]}", [
-                _evidence_nav(
-                    _a(_evidence_path("epoch", str(epoch)), f"epoch {epoch}")
-                ),
-                ["div.eyebrow", "commit"],
-                ["h1", commit_id],
-                ["p.note", "legacy evidence unavailable"],
-                _dl_rows([
-                    ("oid", obs.get("oid")),
-                    ("eligible", obs.get("eligible")),
-                    ("exclusion_reason", obs.get("exclusion_reason")),
-                    ("epoch", str(epoch)),
-                ]),
-            ])
         return _evidence_page("commit not found", [
             _evidence_nav(),
             ["h1", "commit not found"],
             ["p", commit_id],
         ])
-    if ev:
-        p = ev.payload
-        epoch = ev.epoch
-        oid = p.get("oid", "")
-        contributor = p.get("contributor", "")
-        message = _blob_text(p.get("message"))
-        patch = _blob_text(p.get("patch"))
-        meta = _dl_rows([
+    p = ev.payload
+    epoch = ev.epoch
+    return _evidence_page(f"commit {commit_id[:24]}", [
+        _evidence_nav(_a(_evidence_path("epoch", str(epoch)), f"epoch {epoch}")),
+        ["div.eyebrow", "commit"],
+        ["h1", commit_id],
+        _dl_rows([
             ("commit_id", commit_id),
-            ("oid", oid),
-            ("contributor", contributor),
+            ("oid", p.get("oid", "")),
+            ("contributor", p.get("contributor", "")),
             ("patch_sha256", p.get("patch_sha256")),
             ("patch_identity", p.get("patch_identity")),
             ("committer_timestamp_ms", p.get("committer_timestamp_ms")),
             ("evidence_event", _a(_evidence_path("event", ev.event_id), ev.event_id)),
             ("epoch", _a(_evidence_path("epoch", str(epoch)), str(epoch))),
-        ])
-        legacy_note = None
-    else:
-        assert legacy_row is not None and discovery is not None
-        epoch = discovery.epoch
-        oid = legacy_row.get("oid", "")
-        contributor = legacy_row.get("contributor", "")
-        message = legacy_row.get("message") or ""
-        patch = legacy_row.get("patch") or ""
-        meta = _dl_rows([
-            ("commit_id", commit_id),
-            ("oid", oid),
-            ("contributor", contributor),
-            ("patch_sha256", legacy_row.get("patch_sha256")),
-            ("patch_identity", legacy_row.get("patch_identity")),
-            ("committer_timestamp_ms", legacy_row.get("committer_timestamp_ms")),
-            ("epoch", _a(_evidence_path("epoch", str(epoch)), str(epoch))),
-            ("source", "legacy GitDiscovery projection"),
-        ])
-        legacy_note = ["p.note", "Projected from GitDiscovery — Evidence envelope absent."]
-    return _evidence_page(f"commit {commit_id[:24]}", [
-        _evidence_nav(_a(_evidence_path("epoch", str(epoch)), f"epoch {epoch}")),
-        ["div.eyebrow", "commit"],
-        ["h1", commit_id],
-        *([legacy_note] if legacy_note else []),
-        meta,
+        ]),
         ["p", _a(f"/commits/{commit_id}/patch", "download patch")],
         ["h2", "message"],
-        _pre_blob(message),
+        _pre_blob(_blob_text(p.get("message"))),
         ["h2", "patch"],
-        _pre_blob(patch),
+        _pre_blob(_blob_text(p.get("patch"))),
     ])
 
 
 @app.get("/commits/{commit_id}/patch")
 async def commit_patch_download(commit_id: str):
     ev = find_evidence_payload("git.commit", "commit_id", commit_id)
-    if ev:
-        raw = _decode_blob(ev.payload.get("patch")) or _blob_text(ev.payload.get("patch")).encode()
-    else:
-        _, row = _legacy_commit_row(commit_id)
-        if not row:
-            return PlainTextResponse("not found", status_code=404)
-        raw = (row.get("patch") or "").encode("utf-8")
+    if not ev:
+        return PlainTextResponse("not found", status_code=404)
+    raw = _decode_blob(ev.payload.get("patch")) or _blob_text(ev.payload.get("patch")).encode()
     return Response(
         content=raw,
         media_type="text/plain; charset=utf-8",
@@ -3226,7 +3141,9 @@ async def watch():
                 ["div.controls",
                     ["button#play", {"type": "button", "disabled": "true"}, "▶ Play live feed"],
                     ["button#pause", {"type": "button"}, "Ⅱ Pause feed"],
-                    ["span.note", "Pause stops local updates; the constitutional process continues."],
+                    ["span.note",
+                     "Play/pause only affect this browser feed — they do not run or stop emission. "
+                     "The server emits at each epoch boundary; status above is that process."],
                 ],
             ],
             ["section.panel",
diff --git a/tests/integration.clj b/tests/integration.clj
index 204b0fedfbad57846205cb140c4ed9406b5f8e0e..11140e95a8cd86768a661a30e6b29a3ddfc95fcc 100644
--- a/tests/integration.clj
+++ b/tests/integration.clj
@@ -247,7 +247,10 @@
                :decay_rate   "0.003253356063468"
                :distributions {"alice" "381.4282558872" "bob" "190.7141279436"}
                :ranking       {"alice" "0.6666" "bob" "0.3334"}
-               :models_used   ["mock/chat-v1" "mock/chat-v2"]}]
+               :models_used   ["mock/chat-v1" "mock/chat-v2"]
+               :evidence_schema_version 2
+               :ranking_run_id "seed-rank"
+               :ranking_event_id "seed-rank-ev"}]
     (spit path (str (json/generate-string entry) "\n"))))
 
 ;; ---------------------------------------------------------------------------
diff --git a/tests/test_evidence.py b/tests/test_evidence.py
index 76adcd343eec3a65dec58fda93b068356fb1adcd..7cb74fd7fb1bcd0ab17d2cbe2e6ca7e61e164221 100644
--- a/tests/test_evidence.py
+++ b/tests/test_evidence.py
@@ -1,4 +1,4 @@
-"""HTML evidence graph: byte fidelity, resume, legacy projection, private ack."""
+"""HTML evidence graph: byte fidelity, resume, and Evidence-only pages."""
 
 from __future__ import annotations
 
@@ -86,55 +86,10 @@ def test_html_evidence_pages_escape_and_link(evidence_store):
     assert patch_resp.headers["content-disposition"].startswith("attachment")
 
 
-def test_legacy_epoch_projects_from_gitdiscovery_without_evidence(evidence_store):
-    oid = "sha1:" + "b" * 40
-    discovery = c.GitDiscovery(
-        schema_version=1,
-        epoch=3,
-        snapshot_id="legacy-snap",
-        timestamp_ms=1,
-        config_digest="d",
-        initial_snapshot=True,
-        configuration={"repositories": [], "contributors": {}},
-        repositories=[],
-        observations=[{
-            "oid": oid,
-            "eligible": False,
-            "exclusion_reason": "before_genesis",
-            "first_sources": [],
-        }, {
-            "oid": "sha1:" + "c" * 40,
-            "eligible": True,
-            "exclusion_reason": None,
-            "first_sources": [],
-        }],
-        commits=[{
-            "oid": "sha1:" + "c" * 40,
-            "contributor": "tommy-mor",
-            "message": "eligible",
-            "patch": "diff --git a/x b/x\n",
-        }],
-    )
-    emission = c.Emission(
-        epoch=3,
-        timestamp_ms=2,
-        pool_before="1",
-        total_emitted="0.1",
-        pool_after="0.9",
-        decay_rate="0.1",
-        distributions={"tommy-mor": "0.1"},
-        ranking={"tommy-mor": "1"},
-        models_used=[],
-        discovery_snapshot_id="legacy-snap",
-    )
-    asyncio.run(c.store.append(discovery))
-    asyncio.run(c.store.append(emission))
-    html = asyncio.run(c.epoch_detail(3)).body.decode()
-    assert "legacy" in html.lower()
-    assert "Single-contributor" in html or "no LLM" in html
-    excluded_id = c.commit_id_for_oid(oid)
-    excluded_html = asyncio.run(c.commit_detail(excluded_id)).body.decode()
-    assert "legacy evidence unavailable" in excluded_html.lower()
+def test_commit_without_evidence_is_not_found(evidence_store):
+    html = asyncio.run(c.commit_detail("c_missing")).body.decode()
+    assert "commit not found" in html
+    assert "legacy" not in html.lower()
 
 
 def test_ranking_resume_skips_duplicate_provider_calls(evidence_store, monkeypatch):
@@ -202,6 +157,10 @@ def test_epochs_index_lists_epochs(evidence_store):
         distributions={},
         ranking={},
         models_used=[],
+        discovery_snapshot_id="snap",
+        evidence_schema_version=c.EVIDENCE_SCHEMA_VERSION,
+        ranking_run_id="r",
+        ranking_event_id="e",
     )))
     html = asyncio.run(c.epochs_index()).body.decode()
     assert "/epochs/3" in html