{"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[b7626603] Remove browser sentinel delegates so multi-user votes work.\n\nShared WEB_BROWSER_AGENT bound on first vote and blocked every later human; browser posts now use no delegate, matching forum UI.\n\nCo-authored-by: Cursor <cursoragent@cursor.com>\n\nSide A — unified diff (full patch):\ndiff --git a/cli/src/main.rs b/cli/src/main.rs\nindex 70435b412188a151c5e89e842a5de57f7480ddf2..a4a22724fc9e27879951f520a9241d5832982a70 100644\n--- a/cli/src/main.rs\n+++ b/cli/src/main.rs\n@@ -1645,8 +1645,8 @@ async fn run() -> Result<()> {\n                     tokio::time::sleep(std::time::Duration::from_millis(poll_interval_ms)).await;\n                     let poll: PendingSessionPollResponse =\n                         expect_json(client.get(&poll_url).send().await?).await?;\n-                    if !poll.agent.trim().is_empty() {\n-                        agent_out = Some(poll.agent.clone());\n+                    if let Some(a) = poll.agent.as_deref().map(str::trim).filter(|s| !s.is_empty()) {\n+                        agent_out = Some(a.to_string());\n                     }\n                     if poll.complete {\n                         token_out = poll.token;\ndiff --git a/server/src/api/auth.rs b/server/src/api/auth.rs\nindex bfddcce4dc1a77571d297648dd840e6c5bc194f8..01c02f50c19bcd62c7f1717f9b927f203c3164d0 100644\n--- a/server/src/api/auth.rs\n+++ b/server/src/api/auth.rs\n@@ -29,12 +29,6 @@ use crate::{\n     write_cmd::WriteCmd,\n };\n \n-/// Delegate id for browser users who land via `/join/inv_…` (no CLI agent).\n-const INVITE_BROWSER_AGENT: &str = \"00000000-0000-0000-0000-000000000000:invite:web/join\";\n-\n-/// Agent id for `/login` browser OAuth (no CLI); must pass [`parse_agent`].\n-pub const WEB_BROWSER_AGENT: &str = \"00000000-0000-0000-0000-000000000001:social:web/browser\";\n-\n /// HttpOnly cookie storing the same `slug_*` bearer string the CLI uses.\n pub const SLUG_SESSION_COOKIE: &str = \"slug_session\";\n \n@@ -282,7 +276,7 @@ pub async fn get_join_invite(\n     let session = format!(\"p_{}\", uuid::Uuid::new_v4().simple());\n     let redirect_next = safe_local_redirect(q.next.as_deref().or(q.redirect.as_deref()));\n     let s = PendingSession {\n-        agent: INVITE_BROWSER_AGENT.to_string(),\n+        agent: None,\n         created_ts: now_ms(),\n         provider: None,\n         provider_id: None,\n@@ -549,7 +543,7 @@ pub async fn post_choose_username(\n     };\n \n     let sessions = pending_sessions(&state);\n-    let (provider, provider_id, agent) = {\n+    let (provider, provider_id) = {\n         let sessions_read = sessions.read().await;\n         let Some(s) = sessions_read.get(&form.session) else {\n             return api_error(StatusCode::NOT_FOUND, \"unknown session\", None).into_response();\n@@ -560,14 +554,9 @@ pub async fn post_choose_username(\n         let Some(provider_id) = s.provider_id.clone() else {\n             return js_form_error_fragment(&form.session, \"oauth not completed\").into_response();\n         };\n-        (provider, provider_id, s.agent.clone())\n+        (provider, provider_id)\n     };\n \n-    if let Err(msg) = parse_agent(&agent) {\n-        return js_form_error_fragment(&form.session, &format!(\"invalid agent format — {msg}\"))\n-            .into_response();\n-    }\n-\n     let redeem_invite = {\n         let sessions_read = sessions.read().await;\n         sessions_read\n@@ -637,7 +626,8 @@ pub async fn get_web_login(\n     let redirect_next = safe_local_redirect(q.next.as_deref().or(q.redirect.as_deref()))\n         .or_else(|| Some(\"/\".to_string()));\n     let s = PendingSession {\n-        agent: WEB_BROWSER_AGENT.to_string(),\n+        // Humans sign in via the website with no AI delegate.\n+        agent: None,\n         created_ts: now_ms(),\n         provider: None,\n         provider_id: None,\n@@ -698,7 +688,7 @@ pub async fn post_pending_session(\n     );\n     let poll_url = format!(\"/api/v0/pending-session/{session}\");\n     let s = PendingSession {\n-        agent: agent_naked,\n+        agent: Some(agent_naked),\n         created_ts: now_ms(),\n         provider: None,\n         provider_id: None,\ndiff --git a/server/src/api/ui_html.rs b/server/src/api/ui_html.rs\nindex 578e5844e86f7c2666c8e37ef9fa90c01d20d134..57a0139928b09034122398f8f3362cbdbcc5862e 100644\n--- a/server/src/api/ui_html.rs\n+++ b/server/src/api/ui_html.rs\n@@ -276,7 +276,7 @@ async fn dispatch_ui_action(\n                 &session.bearer,\n                 room.clone(),\n                 thread_tag.clone(),\n-                Some(crate::api::auth::WEB_BROWSER_AGENT.to_string()),\n+                None,\n                 text,\n             )\n             .await\ndiff --git a/server/src/state.rs b/server/src/state.rs\nindex 648ab5304764a329fcabbbbcd3782b94e3e005a8..8ea84dcf9b1df8f8037e913cdd94e5908e6d5d55 100644\n--- a/server/src/state.rs\n+++ b/server/src/state.rs\n@@ -21,7 +21,8 @@ pub struct InviteState {\n \n #[derive(Debug, Clone)]\n pub struct PendingSession {\n-    pub agent: String,\n+    /// CLI `identity start` delegate (`uuid:rig:model`). `None` for browser `/login` and `/join`.\n+    pub agent: Option<String>,\n     pub created_ts: i64,\n     pub provider: Option<String>,\n     pub provider_id: Option<String>,\ndiff --git a/server/tests/integration_ui.rs b/server/tests/integration_ui.rs\nindex d242abff5769cc704b3c8070d7456e5788c31a45..22b16c87d5ecdb5272a017af70b5353d8c39c6e8 100644\n--- a/server/tests/integration_ui.rs\n+++ b/server/tests/integration_ui.rs\n@@ -418,6 +418,99 @@ async fn test_web_login_carries_vote_pair_next_into_pending_session() {\n     let sessions = state.pending_sessions.read().await;\n     let pending = sessions.get(&session).expect(\"pending session\");\n     assert_eq!(pending.redirect_next.as_deref(), Some(next));\n+    assert_eq!(\n+        pending.agent, None,\n+        \"browser /login must not invent a sentinel delegate\"\n+    );\n+}\n+\n+#[tokio::test]\n+async fn test_vote_compare_two_users_both_succeed_without_delegate() {\n+    let (addr, _tmp, _log, state, _handle) = create_test_server_with_state().await;\n+    let client = reqwest::Client::new();\n+    let alice = test_bearer();\n+    let bob = seed_user_token(&state, \"bob\", \"bobtok\", \"bobsecret\").await;\n+\n+    // Define items first (votes require existing item bodies).\n+    let seed = ui_post_ingest_rpc(\n+        \"public\",\n+        \"multi-vote\",\n+        \"~/multi-a {alpha}\\n~/multi-b {beta}\\n\",\n+    );\n+    let seed_resp = client\n+        .post(format!(\"http://{addr}/ui\"))\n+        .header(\"Authorization\", format!(\"Bearer {alice}\"))\n+        .form(&[(\"__rpc__\", seed.as_str())])\n+        .send()\n+        .await\n+        .unwrap();\n+    assert_eq!(seed_resp.status(), reqwest::StatusCode::OK);\n+    let seed_js = seed_resp.text().await.unwrap();\n+    assert!(\n+        !seed_js.contains(\"auth-error\"),\n+        \"item seed must succeed, got: {seed_js}\"\n+    );\n+\n+    for (bearer, left, right, explanation) in [\n+        (&alice, \"3\", \"1\", \"alice prefers a\"),\n+        (&bob, \"1\", \"3\", \"bob prefers b\"),\n+    ] {\n+        let rpc = ui_vote_compare_post_rpc(\n+            \"public\",\n+            \"multi-vote\",\n+            \"~/multi-a\",\n+            \"~/multi-b\",\n+            left,\n+            right,\n+            explanation,\n+        );\n+        let resp = client\n+            .post(format!(\"http://{addr}/ui\"))\n+            .header(\"Authorization\", format!(\"Bearer {bearer}\"))\n+            .form(&[(\"__rpc__\", rpc.as_str())])\n+            .send()\n+            .await\n+            .unwrap();\n+        assert_eq!(resp.status(), reqwest::StatusCode::OK);\n+        let js = resp.text().await.unwrap();\n+        assert!(\n+            !js.contains(\"delegate already bound\"),\n+            \"human vote must not hit shared-sentinel AgentBound ({explanation}), got: {js}\"\n+        );\n+        assert!(\n+            !js.contains(\"auth-error\"),\n+            \"human vote must succeed ({explanation}), got: {js}\"\n+        );\n+        assert!(\n+            js.contains(\"vote-edge-history-region\"),\n+            \"vote should morph edge history ({explanation}), got: {js}\"\n+        );\n+    }\n+\n+    let reduced = state.reduced.read().await;\n+    let human_votes: Vec<_> = reduced\n+        .ingests_ordered\n+        .iter()\n+        .filter_map(|id| reduced.ingests_by_id.get(id))\n+        .filter(|ing| ing.raw.contains(\"prefers\"))\n+        .collect();\n+    assert_eq!(human_votes.len(), 2, \"expected two vote ingests\");\n+    let mut principals: Vec<&str> = human_votes.iter().map(|i| i.principal.as_str()).collect();\n+    principals.sort();\n+    assert_eq!(principals, [\"bob\", \"testuser\"]);\n+    for ing in &human_votes {\n+        assert!(\n+            ing.delegate.is_none(),\n+            \"browser votes must have no delegate, principal={} delegate={:?}\",\n+            ing.principal,\n+            ing.delegate\n+        );\n+    }\n+    assert!(\n+        reduced.agent_bindings.is_empty(),\n+        \"human votes must not create AgentBound entries: {:?}\",\n+        reduced.agent_bindings\n+    );\n }\n \n #[tokio::test]\ndiff --git a/server/tests/support/mod.rs b/server/tests/support/mod.rs\nindex 4a620eaa875e7a1145f2a4e82cc4ff2be21d5345..a5306fa2c4c9fda47e43fc0de42407b66e23eced 100644\n--- a/server/tests/support/mod.rs\n+++ b/server/tests/support/mod.rs\n@@ -70,20 +70,25 @@ pub async fn rpc_batch(\n     response.json().await.unwrap()\n }\n \n-pub async fn seed_test_token(state: &AppState) {\n+/// Seed a user + bearer into reducer state (not appended to the event log).\n+/// Returns the `slug_<token_id>_<secret>` bearer string.\n+pub async fn seed_user_token(\n+    state: &AppState,\n+    username: &str,\n+    token_id: &str,\n+    secret: &str,\n+) -> String {\n     let registered = Event::UserRegistered(UserRegistered {\n         ts: 0,\n-        username: \"testuser\".to_string(),\n+        username: username.to_string(),\n         provider: \"test\".to_string(),\n-        provider_id: \"testuser\".to_string(),\n+        provider_id: username.to_string(),\n     });\n-    let token_id = \"testtok\";\n-    let secret = \"secret\";\n     let salt = \"salt\";\n     let token_hash = sha256_hex(&format!(\"{salt}:{secret}\"));\n     let ev = Event::TokenIssued(TokenIssued {\n         ts: 0,\n-        username: \"testuser\".to_string(),\n+        username: username.to_string(),\n         token_id: token_id.to_string(),\n         token_hash,\n         salt: salt.to_string(),\n@@ -92,6 +97,11 @@ pub async fn seed_test_token(state: &AppState) {\n     let mut r = state.reduced.write().await;\n     r.apply_event(registered);\n     r.apply_event(ev);\n+    format!(\"slug_{token_id}_{secret}\")\n+}\n+\n+pub async fn seed_test_token(state: &AppState) {\n+    let _ = seed_user_token(state, \"testuser\", \"testtok\", \"secret\").await;\n }\n \n pub async fn create_test_server_with_state() -> (\ndiff --git a/test/oauth.clj b/test/oauth.clj\nindex 3cbf496005e906ad6c579d44ac8c4055ee60d063..6911ac34a55707acda9f9ce091c079964649a252 100644\n--- a/test/oauth.clj\n+++ b/test/oauth.clj\n@@ -186,8 +186,9 @@\n               (:token poll-json))))))))\n \n (defn fetch-bearer-token!\n-  \"Simulate browser OAuth + username choice; returns `slug_…` bearer token.\n-   Ingest `--delegate` must match this agent string for `AgentBound` on first write.\"\n+  \"Simulate CLI identity OAuth + username choice; returns `slug_…` bearer token.\n+   Pass `:agent` (default local/dev) when the test will CLI-ingest with `--delegate`\n+   so first write can `AgentBound`. Browser UI posts use no delegate.\"\n   [base-url & {:keys [username agent] :or {username \"intuser\" agent default-agent}}]\n   (let [token (complete-registration! base-url :username username :agent agent)]\n     (when-not (str/starts-with? token \"slug_\")\ndiff --git a/types/src/lib.rs b/types/src/lib.rs\nindex 211493935d19582607f5c87fb492faf47bdc6f53..0c4295b15908ea7a2303dac4c42015ded51e4d73 100644\n--- a/types/src/lib.rs\n+++ b/types/src/lib.rs\n@@ -535,7 +535,9 @@ pub struct PendingSessionStartResponse {\n pub struct PendingSessionPollResponse {\n     pub ok: bool,\n     pub complete: bool,\n-    pub agent: String,\n+    /// Present for CLI identity sessions; omitted for browser `/login` / `/join` (no delegate).\n+    #[serde(default, skip_serializing_if = \"Option::is_none\")]\n+    pub agent: Option<String>,\n     #[serde(skip_serializing_if = \"Option::is_none\")]\n     pub user: Option<String>,\n     #[serde(skip_serializing_if = \"Option::is_none\")]\n\n\nSide B — contributor: tommy-mor\nSide B — commit message:\n[b9476669] Remove browser sentinel delegates so multi-user votes work.\n\nShared WEB_BROWSER_AGENT bound on first vote and blocked every later human; browser posts now use no delegate, matching forum UI.\n\nCo-authored-by: Cursor <cursoragent@cursor.com>\n\nSide B — unified diff (full patch):\ndiff --git a/cli/src/main.rs b/cli/src/main.rs\nindex c4f1494df3aedbd8b883aea6249579aa8336abfe..af3e4fee876910a44f6f872b24821bc541a23e20 100644\n--- a/cli/src/main.rs\n+++ b/cli/src/main.rs\n@@ -1741,8 +1741,8 @@ async fn run() -> Result<()> {\n                     tokio::time::sleep(std::time::Duration::from_millis(poll_interval_ms)).await;\n                     let poll: PendingSessionPollResponse =\n                         expect_json(client.get(&poll_url).send().await?).await?;\n-                    if !poll.agent.trim().is_empty() {\n-                        agent_out = Some(poll.agent.clone());\n+                    if let Some(a) = poll.agent.as_deref().map(str::trim).filter(|s| !s.is_empty()) {\n+                        agent_out = Some(a.to_string());\n                     }\n                     if poll.complete {\n                         token_out = poll.token;\ndiff --git a/server/src/api/auth.rs b/server/src/api/auth.rs\nindex 50dc6af908412b16343829eae25154ebf4e19fca..01c02f50c19bcd62c7f1717f9b927f203c3164d0 100644\n--- a/server/src/api/auth.rs\n+++ b/server/src/api/auth.rs\n@@ -29,18 +29,6 @@ use crate::{\n     write_cmd::WriteCmd,\n };\n \n-/// Delegate id for browser users who land via `/join/inv_…` (no CLI agent).\n-const INVITE_BROWSER_AGENT: &str = \"00000000-0000-0000-0000-000000000000:invite:web/join\";\n-\n-/// Agent id for `/login` browser OAuth (no CLI); must pass [`parse_agent`].\n-pub const WEB_BROWSER_AGENT: &str = \"00000000-0000-0000-0000-000000000001:social:web/browser\";\n-\n-/// True for well-known browser / human-form sentinel delegates (not real AI agents).\n-/// HTML attribution should show the human username for these, not `@@uuid:rig:…`.\n-pub fn is_browser_sentinel_delegate(agent: &str) -> bool {\n-    agent == WEB_BROWSER_AGENT || agent == INVITE_BROWSER_AGENT\n-}\n-\n /// HttpOnly cookie storing the same `slug_*` bearer string the CLI uses.\n pub const SLUG_SESSION_COOKIE: &str = \"slug_session\";\n \n@@ -288,7 +276,7 @@ pub async fn get_join_invite(\n     let session = format!(\"p_{}\", uuid::Uuid::new_v4().simple());\n     let redirect_next = safe_local_redirect(q.next.as_deref().or(q.redirect.as_deref()));\n     let s = PendingSession {\n-        agent: INVITE_BROWSER_AGENT.to_string(),\n+        agent: None,\n         created_ts: now_ms(),\n         provider: None,\n         provider_id: None,\n@@ -555,7 +543,7 @@ pub async fn post_choose_username(\n     };\n \n     let sessions = pending_sessions(&state);\n-    let (provider, provider_id, agent) = {\n+    let (provider, provider_id) = {\n         let sessions_read = sessions.read().await;\n         let Some(s) = sessions_read.get(&form.session) else {\n             return api_error(StatusCode::NOT_FOUND, \"unknown session\", None).into_response();\n@@ -566,14 +554,9 @@ pub async fn post_choose_username(\n         let Some(provider_id) = s.provider_id.clone() else {\n             return js_form_error_fragment(&form.session, \"oauth not completed\").into_response();\n         };\n-        (provider, provider_id, s.agent.clone())\n+        (provider, provider_id)\n     };\n \n-    if let Err(msg) = parse_agent(&agent) {\n-        return js_form_error_fragment(&form.session, &format!(\"invalid agent format — {msg}\"))\n-            .into_response();\n-    }\n-\n     let redeem_invite = {\n         let sessions_read = sessions.read().await;\n         sessions_read\n@@ -643,7 +626,8 @@ pub async fn get_web_login(\n     let redirect_next = safe_local_redirect(q.next.as_deref().or(q.redirect.as_deref()))\n         .or_else(|| Some(\"/\".to_string()));\n     let s = PendingSession {\n-        agent: WEB_BROWSER_AGENT.to_string(),\n+        // Humans sign in via the website with no AI delegate.\n+        agent: None,\n         created_ts: now_ms(),\n         provider: None,\n         provider_id: None,\n@@ -704,7 +688,7 @@ pub async fn post_pending_session(\n     );\n     let poll_url = format!(\"/api/v0/pending-session/{session}\");\n     let s = PendingSession {\n-        agent: agent_naked,\n+        agent: Some(agent_naked),\n         created_ts: now_ms(),\n         provider: None,\n         provider_id: None,\ndiff --git a/server/src/api/mod.rs b/server/src/api/mod.rs\nindex fdff6db0472b36cd7870a4be68574023e0daf120..920e967b47852ea82fa61b84c457ae3582dd9800 100644\n--- a/server/src/api/mod.rs\n+++ b/server/src/api/mod.rs\n@@ -18,13 +18,11 @@ pub use auth::{\n     get_choose_username,\n     get_web_login,\n     get_logout,\n-    is_browser_sentinel_delegate,\n     optional_principal,\n     resolve_web_session,\n     session_cookie_header_value,\n     WebSession,\n     SLUG_SESSION_COOKIE,\n-    WEB_BROWSER_AGENT,\n };\n \n pub use helpers::{\ndiff --git a/server/src/api/ui_html.rs b/server/src/api/ui_html.rs\nindex 611956d0a46062b49ce350be176e4be139312ff0..6e56c039a184953cd1d0593c34cf4d5abe41f2a3 100644\n--- a/server/src/api/ui_html.rs\n+++ b/server/src/api/ui_html.rs\n@@ -277,7 +277,7 @@ async fn dispatch_ui_action(\n                 &session.bearer,\n                 room.clone(),\n                 thread_tag.clone(),\n-                Some(crate::api::auth::WEB_BROWSER_AGENT.to_string()),\n+                None,\n                 text,\n             )\n             .await\ndiff --git a/server/src/html/mod.rs b/server/src/html/mod.rs\nindex 645d54f2e117ba901e02ed958ada6ff69a78ae34..03ad762e88709c77b9d5dd130c48bc96226616a1 100644\n--- a/server/src/html/mod.rs\n+++ b/server/src/html/mod.rs\n@@ -560,27 +560,28 @@ fn identity_color_css(seed: &str) -> String {\n     format!(\"hsl({hue}, 62%, 66%)\")\n }\n \n-/// Seed for author color: real AI → delegate uuid; human/sentinel → principal username.\n+/// Seed for author color: AI → delegate uuid; human (no delegate) → principal username.\n fn authorship_color_seed<'a>(principal: &'a str, delegate: &'a Option<String>) -> &'a str {\n     match delegate {\n-        Some(d) if !crate::api::is_browser_sentinel_delegate(d) => {\n-            d.split(':').next().filter(|s| !s.is_empty()).unwrap_or(d.as_str())\n-        }\n-        _ => principal,\n+        Some(d) => d\n+            .split(':')\n+            .next()\n+            .filter(|s| !s.is_empty())\n+            .unwrap_or(d.as_str()),\n+        None => principal,\n     }\n }\n \n-/// Prefer the AI delegate in attribution; fall back to the human username when there is no\n-/// delegate or the delegate is a browser/human-form sentinel.\n+/// Prefer the AI delegate in attribution; humans post with no delegate and show `@username`.\n pub(crate) fn authorship_attr(principal: &str, delegate: &Option<String>) -> AuthorshipAttr {\n     let color = identity_color_css(authorship_color_seed(principal, delegate));\n     match delegate {\n-        Some(d) if !crate::api::is_browser_sentinel_delegate(d) => AuthorshipAttr {\n+        Some(d) => AuthorshipAttr {\n             label: format!(\"@@{}\", actor_label(d)),\n             author_title: Some(format!(\"@{principal}\")),\n             color,\n         },\n-        _ => AuthorshipAttr {\n+        None => AuthorshipAttr {\n             label: format!(\"@{principal}\"),\n             author_title: None,\n             color,\n@@ -933,7 +934,6 @@ pub(super) fn recency_class(now_ms: i64, ts_ms: i64) -> &'static str {\n #[cfg(test)]\n mod authorship_tests {\n     use super::*;\n-    use crate::api::WEB_BROWSER_AGENT;\n \n     #[test]\n     fn human_or_missing_delegate_shows_username() {\n@@ -943,15 +943,6 @@ mod authorship_tests {\n         assert!(a.color.starts_with(\"hsl(\"));\n     }\n \n-    #[test]\n-    fn browser_sentinel_delegate_shows_username() {\n-        let d = Some(WEB_BROWSER_AGENT.to_string());\n-        let a = authorship_attr(\"alice\", &d);\n-        assert_eq!(a.label, \"@alice\");\n-        assert_eq!(a.author_title, None);\n-        assert_eq!(authorship_address(\"alice\", &d), \"@alice\");\n-    }\n-\n     #[test]\n     fn real_ai_delegate_shows_short_agent_with_username_hover() {\n         let d = Some(\ndiff --git a/server/src/state.rs b/server/src/state.rs\nindex 648ab5304764a329fcabbbbcd3782b94e3e005a8..8ea84dcf9b1df8f8037e913cdd94e5908e6d5d55 100644\n--- a/server/src/state.rs\n+++ b/server/src/state.rs\n@@ -21,7 +21,8 @@ pub struct InviteState {\n \n #[derive(Debug, Clone)]\n pub struct PendingSession {\n-    pub agent: String,\n+    /// CLI `identity start` delegate (`uuid:rig:model`). `None` for browser `/login` and `/join`.\n+    pub agent: Option<String>,\n     pub created_ts: i64,\n     pub provider: Option<String>,\n     pub provider_id: Option<String>,\ndiff --git a/server/tests/integration_ui.rs b/server/tests/integration_ui.rs\nindex 6b1475b773106a2dd3f326475c9fb4cc727f6b4b..714563a8b330e3917d95a54ae29b4de143e3b8a4 100644\n--- a/server/tests/integration_ui.rs\n+++ b/server/tests/integration_ui.rs\n@@ -418,6 +418,99 @@ async fn test_web_login_carries_vote_pair_next_into_pending_session() {\n     let sessions = state.pending_sessions.read().await;\n     let pending = sessions.get(&session).expect(\"pending session\");\n     assert_eq!(pending.redirect_next.as_deref(), Some(next));\n+    assert_eq!(\n+        pending.agent, None,\n+        \"browser /login must not invent a sentinel delegate\"\n+    );\n+}\n+\n+#[tokio::test]\n+async fn test_vote_compare_two_users_both_succeed_without_delegate() {\n+    let (addr, _tmp, _log, state, _handle) = create_test_server_with_state().await;\n+    let client = reqwest::Client::new();\n+    let alice = test_bearer();\n+    let bob = seed_test_identity(&state, \"bob\", \"bobtok\", \"bobsecret\").await;\n+\n+    // Define items first (votes require existing item bodies).\n+    let seed = ui_post_ingest_rpc(\n+        \"public\",\n+        \"multi-vote\",\n+        \"~/multi-a {alpha}\\n~/multi-b {beta}\\n\",\n+    );\n+    let seed_resp = client\n+        .post(format!(\"http://{addr}/ui\"))\n+        .header(\"Authorization\", format!(\"Bearer {alice}\"))\n+        .form(&[(\"__rpc__\", seed.as_str())])\n+        .send()\n+        .await\n+        .unwrap();\n+    assert_eq!(seed_resp.status(), reqwest::StatusCode::OK);\n+    let seed_js = seed_resp.text().await.unwrap();\n+    assert!(\n+        !seed_js.contains(\"auth-error\"),\n+        \"item seed must succeed, got: {seed_js}\"\n+    );\n+\n+    for (bearer, left, right, explanation) in [\n+        (&alice, \"3\", \"1\", \"alice prefers a\"),\n+        (&bob, \"1\", \"3\", \"bob prefers b\"),\n+    ] {\n+        let rpc = ui_vote_compare_post_rpc(\n+            \"public\",\n+            \"multi-vote\",\n+            \"~/multi-a\",\n+            \"~/multi-b\",\n+            left,\n+            right,\n+            explanation,\n+        );\n+        let resp = client\n+            .post(format!(\"http://{addr}/ui\"))\n+            .header(\"Authorization\", format!(\"Bearer {bearer}\"))\n+            .form(&[(\"__rpc__\", rpc.as_str())])\n+            .send()\n+            .await\n+            .unwrap();\n+        assert_eq!(resp.status(), reqwest::StatusCode::OK);\n+        let js = resp.text().await.unwrap();\n+        assert!(\n+            !js.contains(\"delegate already bound\"),\n+            \"human vote must not hit shared-sentinel AgentBound ({explanation}), got: {js}\"\n+        );\n+        assert!(\n+            !js.contains(\"auth-error\"),\n+            \"human vote must succeed ({explanation}), got: {js}\"\n+        );\n+        assert!(\n+            js.contains(\"vote-edge-history-region\"),\n+            \"vote should morph edge history ({explanation}), got: {js}\"\n+        );\n+    }\n+\n+    let reduced = state.reduced.read().await;\n+    let human_votes: Vec<_> = reduced\n+        .ingests_ordered\n+        .iter()\n+        .filter_map(|id| reduced.ingests_by_id.get(id))\n+        .filter(|ing| ing.raw.contains(\"prefers\"))\n+        .collect();\n+    assert_eq!(human_votes.len(), 2, \"expected two vote ingests\");\n+    let mut principals: Vec<&str> = human_votes.iter().map(|i| i.principal.as_str()).collect();\n+    principals.sort();\n+    assert_eq!(principals, [\"bob\", \"testuser\"]);\n+    for ing in &human_votes {\n+        assert!(\n+            ing.delegate.is_none(),\n+            \"browser votes must have no delegate, principal={} delegate={:?}\",\n+            ing.principal,\n+            ing.delegate\n+        );\n+    }\n+    assert!(\n+        reduced.agent_bindings.is_empty(),\n+        \"human votes must not create AgentBound entries: {:?}\",\n+        reduced.agent_bindings\n+    );\n }\n \n #[tokio::test]\ndiff --git a/server/tests/support/mod.rs b/server/tests/support/mod.rs\nindex a4320e991763617c1a760efad4b621977e2b74d0..67650520ea8f9f144bfe904347c40329d5db37e8 100644\n--- a/server/tests/support/mod.rs\n+++ b/server/tests/support/mod.rs\n@@ -72,17 +72,14 @@ pub async fn rpc_batch(\n     response.json().await.unwrap()\n }\n \n-pub async fn seed_test_token(state: &AppState) {\n-    seed_test_identity(state, \"testuser\", \"testtok\", \"secret\").await;\n-}\n-\n-/// Add a distinct principal and bearer to a running integration-test server.\n+/// Seed a user + bearer into reducer state (not appended to the event log).\n+/// Returns the `slug_<token_id>_<secret>` bearer string.\n pub async fn seed_test_identity(\n     state: &AppState,\n     username: &str,\n     token_id: &str,\n     secret: &str,\n-) {\n+) -> String {\n     let registered = Event::UserRegistered(UserRegistered {\n         ts: 0,\n         username: username.to_string(),\n@@ -102,6 +99,11 @@ pub async fn seed_test_identity(\n     let mut r = state.reduced.write().await;\n     r.apply_event(registered);\n     r.apply_event(ev);\n+    format!(\"slug_{token_id}_{secret}\")\n+}\n+\n+pub async fn seed_test_token(state: &AppState) {\n+    let _ = seed_test_identity(state, \"testuser\", \"testtok\", \"secret\").await;\n }\n \n pub async fn create_test_server_with_state() -> (\ndiff --git a/test/oauth.clj b/test/oauth.clj\nindex 3cbf496005e906ad6c579d44ac8c4055ee60d063..6911ac34a55707acda9f9ce091c079964649a252 100644\n--- a/test/oauth.clj\n+++ b/test/oauth.clj\n@@ -186,8 +186,9 @@\n               (:token poll-json))))))))\n \n (defn fetch-bearer-token!\n-  \"Simulate browser OAuth + username choice; returns `slug_…` bearer token.\n-   Ingest `--delegate` must match this agent string for `AgentBound` on first write.\"\n+  \"Simulate CLI identity OAuth + username choice; returns `slug_…` bearer token.\n+   Pass `:agent` (default local/dev) when the test will CLI-ingest with `--delegate`\n+   so first write can `AgentBound`. Browser UI posts use no delegate.\"\n   [base-url & {:keys [username agent] :or {username \"intuser\" agent default-agent}}]\n   (let [token (complete-registration! base-url :username username :agent agent)]\n     (when-not (str/starts-with? token \"slug_\")\ndiff --git a/types/src/lib.rs b/types/src/lib.rs\nindex cd6f94c60a4e1c3bfbce13bc0404b803f5f57c6d..4d05466c19a2f15f7d600e1d4a206b39984fabc4 100644\n--- a/types/src/lib.rs\n+++ b/types/src/lib.rs\n@@ -538,7 +538,9 @@ pub struct PendingSessionStartResponse {\n pub struct PendingSessionPollResponse {\n     pub ok: bool,\n     pub complete: bool,\n-    pub agent: String,\n+    /// Present for CLI identity sessions; omitted for browser `/login` / `/join` (no delegate).\n+    #[serde(default, skip_serializing_if = \"Option::is_none\")]\n+    pub agent: Option<String>,\n     #[serde(skip_serializing_if = \"Option::is_none\")]\n     pub user: Option<String>,\n     #[serde(skip_serializing_if = \"Option::is_none\")]\n","role":"user"}],"model":"~anthropic/claude-sonnet-latest"}