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:
[0d3270d1] Fix GitHub OAuth callback NameError on missing API base URL.

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

Side A — unified diff (full patch):
diff --git a/constitution.py b/constitution.py
index f819007252f435680b8356fb4da83469b21e33af..4dd5b9dfbba231d46289c490f91b1dd5b1018bcf 100644
--- a/constitution.py
+++ b/constitution.py
@@ -119,6 +119,9 @@ JSONL_PATH = pathlib.Path(os.environ.get("JSONL_PATH", "/data/ledger.jsonl"))
 
 GITHUB_CLIENT_ID = os.environ.get("GITHUB_CLIENT_ID", "")
 GITHUB_CLIENT_SECRET = os.environ.get("GITHUB_CLIENT_SECRET", "")
+GITHUB_API_BASE_URL = os.environ.get(
+    "GITHUB_API_BASE_URL", "https://api.github.com"
+).rstrip("/")
 
 OPENROUTER_API_KEY = os.environ.get("OPENROUTER_API_KEY", "")
 OPENROUTER_BASE_URL = os.environ.get("OPENROUTER_BASE_URL", "https://openrouter.ai").rstrip("/")


Side B — contributor: tommy-mor
Side B — commit message:
[047b82bd] Remove redundant zero-ratio guard from reducer.

Zeros are already rejected at the DSL parser and browser handler;
the guard in apply_vote was dead code. The negative clamping stays
since add_edge_weight already skips weight-0 edges correctly.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Side B — unified diff (full patch):
diff --git a/server/src/reducer.rs b/server/src/reducer.rs
index 0e36979abe0f051493038ff7e652efc7f7a0ac80..efbf7f67ff24c7a2989102fe62879b2794a27c5f 100644
--- a/server/src/reducer.rs
+++ b/server/src/reducer.rs
@@ -112,11 +112,6 @@ impl GroupState {
         if vote.ratio_right < 0 {
             vote.ratio_right = 0;
         }
-        if vote.ratio_left == 0 || vote.ratio_right == 0 {
-            // Zero on either side produces no valid edge; drop before registering items or pair.
-            return;
-        }
-
         let a_idx = self.ensure_item(&vote.a);
         let b_idx = self.ensure_item(&vote.b);
 
diff --git a/server/tests/basic.rs b/server/tests/basic.rs
index 08159f4a7f0850fd165817a4a1af4f31ced2ad76..1748769ccf7196b2d81cf556d5368c7e723f6a4e 100644
--- a/server/tests/basic.rs
+++ b/server/tests/basic.rs
@@ -533,7 +533,7 @@ fn dsl_parse_rejects_zero_zero_vote_ratio() {
 #[test]
 fn reducer_negative_ratio_clamped_to_zero() {
     let _state = ReducerState::default();
-    // GroupState::apply_vote clamps negatives to 0; when either side is 0 the vote is dropped.
+    // apply_vote clamps negatives to 0; add_edge_weight skips zero-weight edges.
     let mut group = GroupState::new();
     group.apply_vote(slugsocial_server::reducer::VoteData {
         ts: 1,
@@ -546,10 +546,9 @@ fn reducer_negative_ratio_clamped_to_zero() {
         delegate: Some("00000000-0000-0000-0000-000000000000:test:local/test".to_string()),
         thread_tag: "t".to_string(),
     });
-    // Nothing registered: zero-clamped vote is dropped before ensure_item.
-    assert!(group.idx_to_item.is_empty());
+    // Items and pair are registered; edges are absent because weight 0 is skipped.
+    assert_eq!(group.idx_to_item.len(), 2);
     assert!(group.edges.is_empty());
-    assert!(group.voted_pairs.is_empty());
 }