{"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[4cd0d15d] more seed\n\nSide A — unified diff (full patch):\ndiff --git a/Dockerfile b/Dockerfile\nnew file mode 100644\nindex 0000000000000000000000000000000000000000..9cb07c60cb0da063f747cfbf1b3b876ecb8ba03e\n--- /dev/null\n+++ b/Dockerfile\n@@ -0,0 +1,34 @@\n+# time 0.3.47+ requires Rust 1.88 (edition 2024)\n+FROM rust:1.88-slim as builder\n+\n+WORKDIR /build\n+\n+RUN apt-get update && \\\n+    apt-get install -y pkg-config libssl-dev && \\\n+    rm -rf /var/lib/apt/lists/*\n+\n+# Copy source and build. (Keep it simple to avoid remote build cache oddities.)\n+COPY . .\n+RUN cargo build --release --package slugsocial-server\n+\n+FROM debian:bookworm-slim\n+\n+RUN apt-get update && \\\n+    apt-get install -y ca-certificates && \\\n+    rm -rf /var/lib/apt/lists/*\n+\n+WORKDIR /app\n+\n+COPY --from=builder /build/target/release/slugsocial-server /app/slugsocial-server\n+\n+# Create data directory for persistent volume\n+RUN mkdir -p /data\n+\n+ENV SLUG_DATA_DIR=/data\n+ENV SLUG_EVENT_LOG=/data/events.jsonl\n+ENV PORT=8080\n+\n+EXPOSE 8080\n+\n+CMD [\"/app/slugsocial-server\"]\n+\ndiff --git a/deps.edn b/deps.edn\nnew file mode 100644\nindex 0000000000000000000000000000000000000000..0bf892d44f491cb2313e01ae8a942c3097c52948\n--- /dev/null\n+++ b/deps.edn\n@@ -0,0 +1,10 @@\n+{:paths [\".\" \"test\"]\n+ :deps {cheshire/cheshire {:mvn/version \"5.13.0\"}\n+        http-kit/http-kit {:mvn/version \"2.8.0\"}\n+        babashka/fs {:mvn/version \"0.5.32\"}\n+        babashka/process {:mvn/version \"0.6.25\"}\n+        com.blockether/spel {:mvn/version \"0.7.11\"}}\n+ :aliases\n+ {:kaocha {:extra-deps {lambdaisland/kaocha {:mvn/version \"1.91.1392\"}\n+                        lambdaisland/kaocha-junit-xml {:mvn/version \"1.17.101\"}}\n+          :main-opts [\"-m\" \"kaocha.runner\"]}}}\ndiff --git a/event_log.rs b/event_log.rs\nnew file mode 100644\nindex 0000000000000000000000000000000000000000..eaae0d495e43a45d6590603892265a62cc92906e\n--- /dev/null\n+++ b/event_log.rs\n@@ -0,0 +1,83 @@\n+use std::path::{Path, PathBuf};\n+\n+use tokio::{\n+    fs::{self, OpenOptions},\n+    io::{AsyncBufReadExt, AsyncWriteExt, BufReader},\n+};\n+\n+use crate::events::Event;\n+\n+#[derive(Debug, thiserror::Error)]\n+pub enum EventLogError {\n+    #[error(\"io error: {0}\")]\n+    Io(#[from] std::io::Error),\n+    #[error(\"json error: {0}\")]\n+    Json(#[from] serde_json::Error),\n+}\n+\n+#[derive(Debug, Clone)]\n+pub struct EventLog {\n+    path: PathBuf,\n+}\n+\n+impl EventLog {\n+    pub fn new(path: impl Into<PathBuf>) -> Self {\n+        Self { path: path.into() }\n+    }\n+\n+    pub fn path(&self) -> &Path {\n+        &self.path\n+    }\n+\n+    pub async fn ensure_parent_dir(&self) -> Result<(), EventLogError> {\n+        if let Some(parent) = self.path.parent() {\n+            fs::create_dir_all(parent).await?;\n+        }\n+        Ok(())\n+    }\n+\n+    pub async fn append(&self, event: &Event) -> Result<(), EventLogError> {\n+        self.ensure_parent_dir().await?;\n+        let mut f: tokio::fs::File = OpenOptions::new()\n+            .create(true)\n+            .append(true)\n+            .open(&self.path)\n+            .await?;\n+\n+        let mut line = serde_json::to_string(event)?;\n+        line.push('\\n');\n+        f.write_all(line.as_bytes()).await?;\n+        f.flush().await?;\n+        Ok(())\n+    }\n+\n+    /// Load events from JSONL. Corrupt lines are skipped and returned as `(line_no, line)`.\n+    pub async fn load_all(&self) -> Result<(Vec<Event>, Vec<(usize, String)>), EventLogError> {\n+        if !fs::try_exists(&self.path).await? {\n+            return Ok((vec![], vec![]));\n+        }\n+\n+        let f = fs::File::open(&self.path).await?;\n+        let mut reader = BufReader::new(f).lines();\n+\n+        let mut events = Vec::new();\n+        let mut bad_lines = Vec::new();\n+\n+        let mut line_no: usize = 0;\n+        while let Some(line) = reader.next_line().await? {\n+            line_no += 1;\n+            let trimmed = line.trim();\n+            if trimmed.is_empty() {\n+                continue;\n+            }\n+            match serde_json::from_str::<Event>(trimmed) {\n+                Ok(ev) => events.push(ev),\n+                Err(_) => bad_lines.push((line_no, line)),\n+            }\n+        }\n+\n+        Ok((events, bad_lines))\n+    }\n+}\n+\n+\ndiff --git a/fly.toml b/fly.toml\nnew file mode 100644\nindex 0000000000000000000000000000000000000000..bbb9345e527452db1d87a549213645c195eae5fc\n--- /dev/null\n+++ b/fly.toml\n@@ -0,0 +1,42 @@\n+app = \"slugsocial\"\n+primary_region = \"iad\"\n+\n+[build]\n+  dockerfile = \"Dockerfile\"\n+\n+[env]\n+  SLUG_DATA_DIR = \"/data\"\n+  SLUG_EVENT_LOG = \"/data/events.jsonl\"\n+  PORT = \"8080\"\n+\n+[[services]]\n+  internal_port = 8080\n+  protocol = \"tcp\"\n+\n+  [[services.ports]]\n+    port = 80\n+    handlers = [\"http\"]\n+    force_https = true\n+\n+  [[services.ports]]\n+    port = 443\n+    handlers = [\"tls\", \"http\"]\n+\n+  [services.concurrency]\n+    type = \"connections\"\n+    hard_limit = 1000\n+    soft_limit = 500\n+\n+  [[services.http_checks]]\n+    interval = \"10s\"\n+    timeout = \"2s\"\n+    grace_period = \"5s\"\n+    method = \"GET\"\n+    path = \"/healthz\"\n+    protocol = \"http\"\n+    tls_skip_verify = false\n+\n+[[mounts]]\n+  source = \"slugsocial_data\"\n+  destination = \"/data\"\n+\ndiff --git a/views.rs b/views.rs\nnew file mode 100644\nindex 0000000000000000000000000000000000000000..d4f0ffc49475f014698b4da0de6f476884430813\n--- /dev/null\n+++ b/views.rs\n@@ -0,0 +1,63 @@\n+use std::{\n+    collections::HashMap,\n+    sync::{Arc, Mutex},\n+};\n+use tokio::sync::mpsc;\n+\n+type CountMap = Arc<Mutex<HashMap<String, u64>>>;\n+\n+#[derive(Clone)]\n+pub struct ViewStore {\n+    counts: CountMap,\n+    flush_tx: mpsc::Sender<()>,\n+}\n+\n+impl ViewStore {\n+    pub fn new(json_path: &str) -> Self {\n+        // Load existing counts from disk on startup (best-effort)\n+        let initial: HashMap<String, u64> = std::fs::read_to_string(json_path)\n+            .ok()\n+            .and_then(|s| serde_json::from_str(&s).ok())\n+            .unwrap_or_default();\n+\n+        let counts: CountMap = Arc::new(Mutex::new(initial));\n+        let (flush_tx, mut flush_rx) = mpsc::channel::<()>(64);\n+        let path = json_path.to_string();\n+\n+        let counts_for_writer = counts.clone();\n+        tokio::spawn(async move {\n+            while flush_rx.recv().await.is_some() {\n+                while flush_rx.try_recv().is_ok() {}\n+\n+                let snapshot: HashMap<String, u64> = {\n+                    counts_for_writer.lock().unwrap().clone()\n+                };\n+\n+                let path = path.clone();\n+                let _ = tokio::task::spawn_blocking(move || {\n+                    if let Ok(json) = serde_json::to_string(&snapshot) {\n+                        let tmp = format!(\"{path}.tmp\");\n+                        if std::fs::write(&tmp, &json).is_ok() {\n+                            let _ = std::fs::rename(&tmp, &path);\n+                        }\n+                    }\n+                })\n+                .await;\n+            }\n+        });\n+\n+        Self { counts, flush_tx }\n+    }\n+\n+    pub fn increment(&self, path: String) {\n+        {\n+            let mut map = self.counts.lock().unwrap();\n+            *map.entry(path).or_insert(0) += 1;\n+        }\n+        let _ = self.flush_tx.try_send(());\n+    }\n+\n+    pub fn get_views(&self, path: &str) -> u64 {\n+        self.counts.lock().unwrap().get(path).copied().unwrap_or(0)\n+    }\n+}\n\n\nSide B — contributor: tommy-mor\nSide B — commit message:\n[9e3d989b] Add test that 25 spanning-tree votes with perfect ratios sort the alphabet.\n\nDemonstrates rank centrality recovers the true order from a random connected\ncomparison graph when each vote encodes item strength as (idx+1).\n\nCo-authored-by: Cursor <cursoragent@cursor.com>\n\nSide B — unified diff (full patch):\ndiff --git a/server/src/ranking.rs b/server/src/ranking.rs\nindex c9b4d5d89d2f22cf53a5b43eb979e19a11bc89a1..93cb4c9f5887a1e598cdc9d648751055f618adcc 100644\n--- a/server/src/ranking.rs\n+++ b/server/src/ranking.rs\n@@ -369,6 +369,48 @@ mod tests {\n         assert_eq!(comp1, vec![\"c\", \"d\"]);\n     }\n \n+    /// A random spanning tree over 26 items needs only n−1 = 25 pairwise votes.\n+    /// When each vote uses the \"perfect\" ratio (strength left : strength right =\n+    /// (idx_left+1) : (idx_right+1)), rank centrality recovers the true order.\n+    /// See `rank-eric.py` (Eric's demo of Negahban–Oh–Shah rank centrality).\n+    #[test]\n+    fn twenty_five_random_votes_perfect_ratios_sort_alphabet() {\n+        use rand::seq::SliceRandom;\n+\n+        const N: usize = 26;\n+        let letters: Vec<char> = (0..N).map(|i| char::from(b'a' + i as u8)).collect();\n+\n+        let mut rng = rand::thread_rng();\n+        let mut perm: Vec<usize> = (0..N).collect();\n+        perm.shuffle(&mut rng);\n+\n+        let mut g = mk_group();\n+        for k in 1..N {\n+            let i = *perm[..k].choose(&mut rng).unwrap();\n+            let j = perm[k];\n+            let (a, b) = (letters[i], letters[j]);\n+            g.apply_vote(vote(\n+                k as i64,\n+                &a.to_string(),\n+                &b.to_string(),\n+                (i + 1) as i32,\n+                (j + 1) as i32,\n+            ));\n+        }\n+\n+        let ranked = ranked_items(&g);\n+        assert_eq!(ranked.len(), N);\n+        for (rank, item) in ranked.iter().enumerate() {\n+            let expected = char::from(b'a' + (N - 1 - rank) as u8);\n+            assert_eq!(\n+                item.item.as_str(),\n+                expected.to_string(),\n+                \"rank {rank}: expected '{expected}', got '{}'\",\n+                item.item.as_str()\n+            );\n+        }\n+    }\n+\n     #[test]\n     fn subset_ranking_ranks_within_component_only() {\n         let mut g = mk_group();\n","role":"user"}],"model":"~anthropic/claude-sonnet-latest"}