{"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[8d8230d1] reddit\n\nSide B — unified diff (full patch):\ndiff --git a/.gitignore b/.gitignore\nindex 4c7073f9fac0c30fd2050d79a60ef447af58ebeb..ada462e900d24a3a6d08165d158c80f79c35a5a5 100644\n--- a/.gitignore\n+++ b/.gitignore\n@@ -7,3 +7,4 @@\n data/\n repomix-output.xml\n dev-data/\n+.env\ndiff --git a/server/Cargo.toml b/server/Cargo.toml\nindex 7906a8547d56b8e6a48ef59c37aa82a8510fdee9..4677fedcb45292eebebe7e9cf6ce2f5738f18ddf 100644\n--- a/server/Cargo.toml\n+++ b/server/Cargo.toml\n@@ -16,6 +16,7 @@ tower = \"0.5\"\n tower-http = { version = \"0.5\", features = [\"trace\"] }\n tracing = \"0.1\"\n tracing-subscriber = { version = \"0.3\", features = [\"env-filter\"] }\n+reqwest = { version = \"0.12\", features = [\"json\"] }\n \n [dev-dependencies]\n reqwest = { version = \"0.12\", features = [\"json\"] }\ndiff --git a/server/src/html/mod.rs b/server/src/html/mod.rs\nindex 2864407ed6e8ec284a1dc663acf1805534566b62..df6505021d9f446c2b453e20e3eb3cf696a111f9 100644\n--- a/server/src/html/mod.rs\n+++ b/server/src/html/mod.rs\n@@ -272,5 +272,16 @@ pub async fn home(State(state): State<AppState>, uri: Uri) -> impl IntoResponse\n \n pub async fn browse(State(state): State<AppState>, uri: Uri) -> impl IntoResponse {\n     let item = ItemId::from_browse_uri(uri.path()).unwrap_or(ItemId::root());\n+    if item.as_str().starts_with(\"reddit.com\") {\n+        let needs_fetch = {\n+            let tree = state.tree.read().await;\n+            tree.get(&item)\n+                .map(|n| n.data.is_none())\n+                .unwrap_or(true)\n+        };\n+        if needs_fetch {\n+            state.reddit.request_fetch(item.clone());\n+        }\n+    }\n     item_page(state, uri, item).await\n }\ndiff --git a/server/src/reddit.rs b/server/src/reddit.rs\nindex d203dca09245daf869b3aa942898447700ae69fb..90053ad03b1d7c8e94f325dd4ee64c2b4f7da900 100644\n--- a/server/src/reddit.rs\n+++ b/server/src/reddit.rs\n@@ -1,4 +1,12 @@\n-//! Reddit API import (async, decoupled from UI request path).\n+//! Reddit API import via a single background worker (rate limits, dedup, backoff).\n+\n+use std::collections::{HashMap, HashSet};\n+use std::sync::Arc;\n+use std::time::{Duration, Instant};\n+\n+use reqwest::{header, Client, StatusCode};\n+use serde::Deserialize;\n+use tokio::sync::{mpsc, RwLock};\n \n use crate::{\n     path_types::ItemId,\n@@ -10,12 +18,401 @@ pub fn ensure_partial_tree(tree: &mut GlobalTree, id: &ItemId) {\n     tree.ensure_path(id);\n }\n \n-/// Placeholder for Reddit JSON import. Returns entity data when implemented.\n-pub async fn fetch_reddit_entity(_id: &ItemId) -> Option<EntityData> {\n-    None\n+pub struct RedditCommand {\n+    pub id: ItemId,\n+}\n+\n+#[derive(Clone)]\n+pub struct RedditBroker {\n+    tx: mpsc::Sender<RedditCommand>,\n+}\n+\n+#[derive(Clone)]\n+struct RedditCredentials {\n+    client_id: String,\n+    client_secret: String,\n+}\n+\n+struct OAuthToken {\n+    access_token: String,\n+    expires_at: Instant,\n+}\n+\n+impl RedditBroker {\n+    pub fn spawn(tree: Arc<RwLock<GlobalTree>>, user_agent: &str) -> Self {\n+        let (tx, rx) = mpsc::channel(100);\n+\n+        let mut headers = header::HeaderMap::new();\n+        headers.insert(\n+            header::USER_AGENT,\n+            header::HeaderValue::from_str(user_agent).expect(\"valid user agent\"),\n+        );\n+\n+        let client = Client::builder()\n+            .default_headers(headers)\n+            .timeout(Duration::from_secs(15))\n+            .build()\n+            .expect(\"reqwest client\");\n+\n+        let creds = RedditCredentials::from_env();\n+        tokio::spawn(reddit_worker(rx, tree, client, creds));\n+\n+        Self { tx }\n+    }\n+\n+    /// Fire-and-forget: queue a fetch; worker updates the tree when done.\n+    pub fn request_fetch(&self, id: ItemId) {\n+        let _ = self.tx.try_send(RedditCommand { id });\n+    }\n+}\n+\n+impl RedditCredentials {\n+    fn from_env() -> Option<Self> {\n+        let client_id = std::env::var(\"REDDIT_CLIENT_ID\").ok()?;\n+        let client_secret = std::env::var(\"REDDIT_CLIENT_SECRET\").ok()?;\n+        if client_id.is_empty() || client_secret.is_empty() {\n+            return None;\n+        }\n+        Some(Self {\n+            client_id,\n+            client_secret,\n+        })\n+    }\n+}\n+\n+pub fn default_user_agent() -> String {\n+    std::env::var(\"REDDIT_USER_AGENT\").unwrap_or_else(|_| {\n+        \"web:sorter2.social:v0.0.1 (by /u/sorter2)\".to_string()\n+    })\n }\n \n-/// Apply fetched entity data to a node (called from async worker).\n-pub fn apply_entity(tree: &mut GlobalTree, id: &ItemId, data: EntityData) {\n-    tree.set_entity_data(id, data);\n+async fn reddit_worker(\n+    mut rx: mpsc::Receiver<RedditCommand>,\n+    tree: Arc<RwLock<GlobalTree>>,\n+    client: Client,\n+    creds: Option<RedditCredentials>,\n+) {\n+    let mut in_flight = HashSet::new();\n+    let mut recently_fetched: HashMap<ItemId, Instant> = HashMap::new();\n+    let mut current_delay = Duration::from_secs(1);\n+    let mut oauth: Option<OAuthToken> = None;\n+    let cache_ttl = Duration::from_secs(300);\n+\n+    while let Some(cmd) = rx.recv().await {\n+        let now = Instant::now();\n+        recently_fetched.retain(|_, t| now.duration_since(*t) < cache_ttl);\n+\n+        if in_flight.contains(&cmd.id) || recently_fetched.contains_key(&cmd.id) {\n+            continue;\n+        }\n+\n+        in_flight.insert(cmd.id.clone());\n+        let fetch_id = cmd.id.clone();\n+\n+        tokio::time::sleep(current_delay).await;\n+\n+        if let Some(c) = &creds {\n+            oauth = ensure_oauth_token(&client, c, oauth.take()).await;\n+        }\n+\n+        let token = oauth.as_ref().map(|t| t.access_token.as_str());\n+        let use_oauth = token.is_some();\n+\n+        match do_fetch(&client, &fetch_id, use_oauth, token).await {\n+            Ok(FetchOutcome::Entity(data)) => {\n+                let mut w = tree.write().await;\n+                w.set_entity_data(&fetch_id, data);\n+                recently_fetched.insert(fetch_id.clone(), Instant::now());\n+                current_delay = Duration::from_millis(600);\n+            }\n+            Ok(FetchOutcome::NotFound) => {\n+                recently_fetched.insert(fetch_id.clone(), Instant::now());\n+            }\n+            Ok(FetchOutcome::RateLimited { reset_secs }) => {\n+                let wait = Duration::from_secs(reset_secs.max(1));\n+                tracing::warn!(\n+                    \"Reddit rate limit for {}; sleeping {}s\",\n+                    fetch_id,\n+                    wait.as_secs()\n+                );\n+                tokio::time::sleep(wait).await;\n+                current_delay = (current_delay * 2).min(Duration::from_secs(60));\n+            }\n+            Err(e) => {\n+                tracing::warn!(\"Reddit fetch failed for {}: {}\", fetch_id, e);\n+                current_delay = (current_delay * 2).min(Duration::from_secs(60));\n+            }\n+        }\n+\n+        in_flight.remove(&fetch_id);\n+    }\n+}\n+\n+enum FetchOutcome {\n+    Entity(EntityData),\n+    NotFound,\n+    RateLimited { reset_secs: u64 },\n+}\n+\n+async fn ensure_oauth_token(\n+    client: &Client,\n+    creds: &RedditCredentials,\n+    existing: Option<OAuthToken>,\n+) -> Option<OAuthToken> {\n+    if let Some(t) = existing {\n+        if Instant::now() < t.expires_at - Duration::from_secs(60) {\n+            return Some(t);\n+        }\n+    }\n+\n+    let resp = client\n+        .post(\"https://www.reddit.com/api/v1/access_token\")\n+        .basic_auth(&creds.client_id, Some(&creds.client_secret))\n+        .form(&[(\"grant_type\", \"client_credentials\")])\n+        .send()\n+        .await;\n+\n+    let resp = match resp {\n+        Ok(r) => r,\n+        Err(e) => {\n+            tracing::warn!(\"Reddit OAuth token request failed: {e}\");\n+            return None;\n+        }\n+    };\n+\n+    if !resp.status().is_success() {\n+        tracing::warn!(\"Reddit OAuth token HTTP {}\", resp.status());\n+        return None;\n+    }\n+\n+    #[derive(Deserialize)]\n+    struct TokenResponse {\n+        access_token: String,\n+        expires_in: u64,\n+    }\n+\n+    let body: TokenResponse = match resp.json().await {\n+        Ok(b) => b,\n+        Err(e) => {\n+            tracing::warn!(\"Reddit OAuth token parse failed: {e}\");\n+            return None;\n+        }\n+    };\n+\n+    Some(OAuthToken {\n+        access_token: body.access_token,\n+        expires_at: Instant::now() + Duration::from_secs(body.expires_in),\n+    })\n+}\n+\n+async fn do_fetch(\n+    client: &Client,\n+    id: &ItemId,\n+    use_oauth: bool,\n+    bearer: Option<&str>,\n+) -> Result<FetchOutcome, String> {\n+    let url = map_item_to_reddit_api(id, use_oauth);\n+    if url.is_empty() {\n+        return Ok(FetchOutcome::NotFound);\n+    }\n+\n+    let mut req = client.get(&url);\n+    if let Some(token) = bearer {\n+        req = req.bearer_auth(token);\n+    }\n+\n+    let resp = req.send().await.map_err(|e| e.to_string())?;\n+\n+    if resp.status() == StatusCode::TOO_MANY_REQUESTS {\n+        let reset = rate_limit_reset_secs(&resp);\n+        return Ok(FetchOutcome::RateLimited { reset_secs: reset });\n+    }\n+\n+    if resp.status() == StatusCode::SERVICE_UNAVAILABLE {\n+        return Err(\"Reddit unavailable (503)\".to_string());\n+    }\n+\n+    if !resp.status().is_success() {\n+        return Ok(FetchOutcome::NotFound);\n+    }\n+\n+    if rate_limit_remaining(&resp) == Some(0) {\n+        let reset = rate_limit_reset_secs(&resp);\n+        return Ok(FetchOutcome::RateLimited { reset_secs: reset });\n+    }\n+\n+    let bytes = resp.bytes().await.map_err(|e| e.to_string())?;\n+    Ok(parse_reddit_json(id, &bytes)\n+        .map(FetchOutcome::Entity)\n+        .unwrap_or(FetchOutcome::NotFound))\n+}\n+\n+fn rate_limit_remaining(resp: &reqwest::Response) -> Option<u64> {\n+    resp.headers()\n+        .get(\"x-ratelimit-remaining\")\n+        .and_then(|v| v.to_str().ok())\n+        .and_then(|s| s.parse::<f64>().ok())\n+        .map(|f| f.floor() as u64)\n+}\n+\n+fn rate_limit_reset_secs(resp: &reqwest::Response) -> u64 {\n+    resp.headers()\n+        .get(\"x-ratelimit-reset\")\n+        .and_then(|v| v.to_str().ok())\n+        .and_then(|s| s.parse::<f64>().ok())\n+        .map(|f| f.ceil() as u64)\n+        .unwrap_or(5)\n+}\n+\n+/// Map canonical item id to Reddit JSON API URL.\n+pub fn map_item_to_reddit_api(id: &ItemId, oauth: bool) -> String {\n+    let path = id.as_str();\n+    if !path.starts_with(\"reddit.com/\") && path != \"reddit.com\" {\n+        return String::new();\n+    }\n+\n+    let base = if oauth {\n+        \"https://oauth.reddit.com\"\n+    } else {\n+        \"https://www.reddit.com\"\n+    };\n+\n+    let segments: Vec<&str> = path.split('/').collect();\n+\n+    if let Some(i) = segments.iter().position(|&p| p == \"comments\") {\n+        if segments.len() > i + 1 {\n+            let api_path = segments[1..=i + 1].join(\"/\");\n+            return format!(\"{base}/{api_path}.json?raw_json=1\");\n+        }\n+    }\n+\n+    if segments.len() == 3 && segments[1] == \"r\" {\n+        return format!(\"{base}/r/{}/about.json?raw_json=1\", segments[2]);\n+    }\n+\n+    String::new()\n+}\n+\n+fn parse_reddit_json(id: &ItemId, bytes: &[u8]) -> Option<EntityData> {\n+    let v: serde_json::Value = serde_json::from_slice(bytes).ok()?;\n+    let segments: Vec<&str> = id.as_str().split('/').collect();\n+\n+    if segments.iter().any(|&p| p == \"comments\") {\n+        parse_post_listing(&v)\n+    } else {\n+        parse_subreddit_about(&v)\n+    }\n+}\n+\n+fn parse_subreddit_about(v: &serde_json::Value) -> Option<EntityData> {\n+    let data = v.get(\"data\")?;\n+    let title = data\n+        .get(\"title\")\n+        .or_else(|| data.get(\"display_name\"))\n+        .and_then(|t| t.as_str())?\n+        .to_string();\n+    let body_html = data\n+        .get(\"public_description_html\")\n+        .or_else(|| data.get(\"public_description\"))\n+        .and_then(|t| t.as_str())\n+        .map(|s| s.to_string());\n+    let thumb_url = data\n+        .get(\"icon_img\")\n+        .or_else(|| data.get(\"community_icon\"))\n+        .and_then(|t| t.as_str())\n+        .filter(|s| !s.is_empty())\n+        .map(|s| s.to_string());\n+\n+    Some(EntityData {\n+        title,\n+        author: None,\n+        body_html,\n+        thumb_url,\n+    })\n+}\n+\n+fn parse_post_listing(v: &serde_json::Value) -> Option<EntityData> {\n+    let listing = v.as_array()?.first()?;\n+    let child = listing\n+        .pointer(\"/data/children/0/data\")?;\n+    let title = child.get(\"title\")?.as_str()?.to_string();\n+    let author = child\n+        .get(\"author\")\n+        .and_then(|a| a.as_str())\n+        .filter(|a| *a != \"[deleted]\")\n+        .map(|s| s.to_string());\n+    let body_html = child\n+        .get(\"selftext_html\")\n+        .and_then(|t| t.as_str())\n+        .filter(|s| !s.is_empty())\n+        .map(|s| s.to_string());\n+    let thumb_url = child\n+        .get(\"thumbnail\")\n+        .and_then(|t| t.as_str())\n+        .filter(|s| s.starts_with(\"http\"))\n+        .map(|s| s.to_string());\n+\n+    Some(EntityData {\n+        title,\n+        author,\n+        body_html,\n+        thumb_url,\n+    })\n+}\n+\n+#[cfg(test)]\n+mod tests {\n+    use super::*;\n+\n+    #[test]\n+    fn map_subreddit_about_url() {\n+        let id = ItemId::parse(\"reddit.com/r/rust\").unwrap();\n+        assert_eq!(\n+            map_item_to_reddit_api(&id, false),\n+            \"https://www.reddit.com/r/rust/about.json?raw_json=1\"\n+        );\n+        assert_eq!(\n+            map_item_to_reddit_api(&id, true),\n+            \"https://oauth.reddit.com/r/rust/about.json?raw_json=1\"\n+        );\n+    }\n+\n+    #[test]\n+    fn map_post_url() {\n+        let id =\n+            ItemId::parse(\"reddit.com/r/amitheasshole/comments/1trnvdl\").unwrap();\n+        assert_eq!(\n+            map_item_to_reddit_api(&id, false),\n+            \"https://www.reddit.com/r/amitheasshole/comments/1trnvdl.json?raw_json=1\"\n+        );\n+    }\n+\n+    #[test]\n+    fn map_non_reddit_empty() {\n+        let id = ItemId::opaque(\"example.com/foo\");\n+        assert!(map_item_to_reddit_api(&id, false).is_empty());\n+    }\n+\n+    #[test]\n+    fn parse_subreddit_fixture() {\n+        let json = r#\"{\"kind\":\"t5\",\"data\":{\"title\":\"Rust\",\"display_name\":\"rust\",\"public_description\":\"systems\"}}\"#;\n+        let entity = parse_reddit_json(\n+            &ItemId::parse(\"reddit.com/r/rust\").unwrap(),\n+            json.as_bytes(),\n+        )\n+        .unwrap();\n+        assert_eq!(entity.title, \"Rust\");\n+    }\n+\n+    #[test]\n+    fn parse_post_fixture() {\n+        let json = r#\"[{\"kind\":\"Listing\",\"data\":{\"children\":[{\"kind\":\"t3\",\"data\":{\"title\":\"AITA\",\"author\":\"op\",\"selftext_html\":\"&lt;p&gt;hi&lt;/p&gt;\",\"thumbnail\":\"https://b.thumbs.redditmedia.com/x.jpg\"}}]}}]\"#;\n+        let entity = parse_reddit_json(\n+            &ItemId::parse(\"reddit.com/r/x/comments/abc\").unwrap(),\n+            json.as_bytes(),\n+        )\n+        .unwrap();\n+        assert_eq!(entity.title, \"AITA\");\n+        assert_eq!(entity.author.as_deref(), Some(\"op\"));\n+    }\n }\ndiff --git a/server/src/state.rs b/server/src/state.rs\nindex cc1722f5a5bf4d415f2327ea585c488a15a75592..8c03aa60c15aee803a534439400b69935b1a3d84 100644\n--- a/server/src/state.rs\n+++ b/server/src/state.rs\n@@ -5,9 +5,10 @@ use tokio::sync::RwLock;\n use crate::{\n     event_log::EventLog,\n     events::Event,\n+    journal::JournalClient,\n     path_types::ItemId,\n+    reddit::{default_user_agent, RedditBroker},\n     reducer::{GlobalTree, VoteData},\n-    journal::JournalClient,\n     views::ViewStore,\n };\n \n@@ -73,6 +74,7 @@ pub struct AppState {\n     pub views: ViewStore,\n     pub tree: Arc<RwLock<GlobalTree>>,\n     journal: JournalClient,\n+    pub reddit: RedditBroker,\n }\n \n impl AppState {\n@@ -112,6 +114,7 @@ impl AppState {\n \n         let tree = Arc::new(RwLock::new(tree));\n         let journal = JournalClient::spawn(tree.clone(), event_log.clone());\n+        let reddit = RedditBroker::spawn(tree.clone(), &default_user_agent());\n \n         Self {\n             cfg: Arc::new(cfg),\n@@ -119,6 +122,7 @@ impl AppState {\n             views,\n             tree,\n             journal,\n+            reddit,\n         }\n     }\n \n@@ -127,8 +131,11 @@ impl AppState {\n             id: id.as_str().to_string(),\n         };\n         self.event_log.append(&event).await.map_err(|e| e.to_string())?;\n-        let mut w = self.tree.write().await;\n-        w.ensure_path(id);\n+        {\n+            let mut w = self.tree.write().await;\n+            w.ensure_path(id);\n+        }\n+        self.reddit.request_fetch(id.clone());\n         Ok(())\n     }\n \ndiff --git a/todo b/todo\nnew file mode 100644\nindex 0000000000000000000000000000000000000000..d196e8cb4cc80ccb95eeff01c73607d520e13212\n--- /dev/null\n+++ b/todo\n@@ -0,0 +1,7 @@\n+reddit import (only on explicit request)\n+reddit rendering\n+vote redering\n+pair chosing\n+nsfw gate\n+\n+logins (uuid user, two sides, oauths, and pseudonyms)\n","role":"user"}],"model":"~anthropic/claude-sonnet-latest"}