{"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[798c764d] feat(html): grouped cli_panel with hover-to-copy and JS-safe asserts\n\nSingle bordered panel for multiple commands; rows copy on click without a\nseparate copy control. Assert CLI strings contain no chars that would break\nsingle-quoted onclick JS.\n\nMade-with: Cursor\n\nSide A — unified diff (full patch):\ndiff --git a/server/src/html/forum.rs b/server/src/html/forum.rs\nindex f6e45b05bb92126966e304619f80ef1d45be7a4b..075860914a6ce18bb0dfa73dc5651ef1a6318b67 100644\n--- a/server/src/html/forum.rs\n+++ b/server/src/html/forum.rs\n@@ -718,7 +718,7 @@ pub async fn home(\n             }\n             div id=\"public-new-thread-ui-slot\" {}\n             (render_thread_feed(Some(&nav), \"thread-feed\", &public_rows, now))\n-            (cli_panel(\"npx slugsocial public forum list\"))\n+            (cli_panel(&[\"npx slugsocial public forum list\"]))\n         },\n         None,\n         theme_from_jar(&jar),\n@@ -868,7 +868,7 @@ async fn thread_view_inner(\n             div id=\"thread-live-region\" {\n                 (compose_form(&nav, &tag, show_compose))\n             }\n-            (cli_panel(&cli))\n+            (cli_panel(std::slice::from_ref(&cli)))\n         },\n         None,\n         theme_from_jar(&jar),\n@@ -984,9 +984,7 @@ pub async fn room_page(\n                     (new_thread_form_for_room(&nav, true, false))\n                 }\n             }\n-            (cli_panel(&forum_cli))\n-            (cli_panel(&garden_cli))\n-            (cli_panel(&audit_cli))\n+            (cli_panel(&[forum_cli, garden_cli, audit_cli]))\n         },\n         None,\n         theme_from_jar(&jar),\n@@ -1409,7 +1407,7 @@ pub async fn user_profile_page(\n                     }\n                 }\n             }\n-            (cli_panel(&format!(\"npx slugsocial public forum list\")))\n+            (cli_panel(&[format!(\"npx slugsocial public forum list\")]))\n         },\n         None,\n         theme_from_jar(&jar),\ndiff --git a/server/src/html/garden.rs b/server/src/html/garden.rs\nindex 9b4789a79c3e293cbfc5f033a0eac8650320d94d..c8ce7de450f7d14e04020511e7eb7323bd487deb 100644\n--- a/server/src/html/garden.rs\n+++ b/server/src/html/garden.rs\n@@ -139,7 +139,7 @@ pub async fn garden_index(\n                     }\n                 }\n             }\n-            (cli_panel(\"npx slugsocial garden tree\"))\n+            (cli_panel(&[\"npx slugsocial garden tree\"]))\n         },\n         None,\n         theme_from_jar(&jar),\n@@ -542,7 +542,7 @@ async fn render_scope_view(\n                 ScopeId::Public => format!(\"npx slugsocial public garden body {}\", path.as_str().trim_start_matches(\"https://slug.social/~/\")),\n                 ScopeId::Room(room_id) => format!(\"npx slugsocial private {room_id} garden body {}\", path.as_str().trim_start_matches(\"https://slug.social/~/\")),\n             };\n-            (cli_panel(&cli))\n+            (cli_panel(std::slice::from_ref(&cli)))\n         },\n         None,\n         theme_from_jar(&jar),\ndiff --git a/server/src/html/mod.rs b/server/src/html/mod.rs\nindex e7f5bfb7a4b2dee2adf96447224c58d641092124..6617781a2e8e86c2e2693788ea7cd0eb0e3659a2 100644\n--- a/server/src/html/mod.rs\n+++ b/server/src/html/mod.rs\n@@ -599,18 +599,38 @@ pub(super) fn render_linkified_with_embeds_in_scope(raw: &str, garden_prefix: &s\n     }\n }\n \n-/// Small CLI hint panel showing how to look up this page from the terminal.\n-pub(super) fn cli_panel(cmd: &str) -> Markup {\n+/// CLI strings are embedded in a single-quoted JS literal; they must never need escaping.\n+fn assert_cli_panel_cmd_js_single_quote_safe(s: &str) {\n+    assert!(\n+        !s.contains('\\\\')\n+            && !s.contains('\\'')\n+            && !s.contains('\\n')\n+            && !s.contains('\\r'),\n+        \"cli_panel cmd must not contain `\\\\`, `'`, or newlines (got {s:?})\"\n+    );\n+}\n+\n+/// Small CLI hint panel: one border and title; each line is hover-highlighted and copies on click.\n+pub(super) fn cli_panel<I: AsRef<str>>(cmds: &[I]) -> Markup {\n+    if cmds.is_empty() {\n+        return html! {};\n+    }\n+    for cmd in cmds {\n+        assert_cli_panel_cmd_js_single_quote_safe(cmd.as_ref());\n+    }\n     html! {\n         div class=\"cli-panel\" {\n             span class=\"cli-panel-label muted\" { \"cli\" }\n-            code class=\"cli-panel-cmd\" { (cmd) }\n-            button\n-                class=\"cli-panel-copy\"\n-                title=\"Copy to clipboard\"\n-                onclick=(format!(r#\"navigator.clipboard.writeText('{}'); this.textContent='✓'; setTimeout(() => this.textContent='copy', 2000);\"#, cmd.replace(\"'\", \"\\\\'\")))\n-            {\n-                \"copy\"\n+            div class=\"cli-panel-cmds\" {\n+                @for cmd in cmds {\n+                    @let s = cmd.as_ref();\n+                    button type=\"button\" class=\"cli-panel-row\" title=\"Copy command\" onclick=(format!(\n+                        r#\"navigator.clipboard.writeText('{}');\"#,\n+                        s\n+                    )) {\n+                        code class=\"cli-panel-cmd\" { (s) }\n+                    }\n+                }\n             }\n         }\n     }\ndiff --git a/server/src/html/search.rs b/server/src/html/search.rs\nindex 28ceaa53c3fcac6777311535e95fb771b19438f5..43e6ebf36cf0fe72c96f0f9d850bea51ac094c43 100644\n--- a/server/src/html/search.rs\n+++ b/server/src/html/search.rs\n@@ -418,7 +418,7 @@ pub async fn search_page(\n                     value=(query) autocomplete=\"off\" autofocus;\n             }\n             (render_search_results(&results, &query))\n-            (cli_panel(\"npx slugsocial search <query>\"))\n+            (cli_panel(&[\"npx slugsocial search <query>\"]))\n         },\n         None,\n         theme_from_jar(&jar),\ndiff --git a/server/static/theme_default.css b/server/static/theme_default.css\nindex e024a5c8b74139ae8be37b2a1bd17e4c3abe9324..764b66c8208e91e6138b83c534387cf43c85b8b5 100644\n--- a/server/static/theme_default.css\n+++ b/server/static/theme_default.css\n@@ -610,7 +610,7 @@ code {\n    CLI PANEL — how to view this page from the terminal\n    ---------------------------------------------------------------- */\n div.cli-panel {\n-  align-items: baseline;\n+  align-items: flex-start;\n   background: var(--g1);\n   border: var(--bv) solid;\n   border-color: var(--lo) var(--hi) var(--hi) var(--lo); /* inset */\n@@ -621,11 +621,34 @@ div.cli-panel {\n   width: fit-content;\n   max-width: 100%;\n }\n+.cli-panel-cmds {\n+  display: flex;\n+  flex-direction: column;\n+  gap: 4px;\n+  flex: 1;\n+  min-width: 0;\n+}\n+button.cli-panel-row {\n+  background: transparent;\n+  border: none;\n+  color: inherit;\n+  cursor: pointer;\n+  display: block;\n+  font: inherit;\n+  margin: 0;\n+  padding: 2px 4px;\n+  text-align: left;\n+  width: 100%;\n+}\n+button.cli-panel-row:hover {\n+  background: var(--g3);\n+}\n .cli-panel-label {\n   font-size: 11px;\n   letter-spacing: 0.08em;\n   text-transform: uppercase;\n   flex-shrink: 0;\n+  padding-top: 2px;\n }\n .cli-panel-cmd {\n   background: none;\ndiff --git a/server/static/theme_retro_craft.css b/server/static/theme_retro_craft.css\nindex 00714575bfa533d1d9c66653b9089642e2b0a6ca..f89ecbc3a18eb9b2b27d1f7764330f6bd6987552 100644\n--- a/server/static/theme_retro_craft.css\n+++ b/server/static/theme_retro_craft.css\n@@ -306,19 +306,41 @@ a.post-nav-btn:hover {\n }\n \n div.cli-panel {\n-  align-items: baseline;\n+  align-items: flex-start;\n   border: 1px dashed var(--line);\n   display: flex;\n-  flex-wrap: wrap;\n   gap: 0.5rem;\n   margin: 0.65rem 0;\n   padding: 0.45rem 0.65rem;\n }\n+.cli-panel-cmds {\n+  display: flex;\n+  flex-direction: column;\n+  gap: 0.25rem;\n+  flex: 1;\n+  min-width: 0;\n+}\n+button.cli-panel-row {\n+  background: transparent;\n+  border: none;\n+  color: inherit;\n+  cursor: pointer;\n+  display: block;\n+  font: inherit;\n+  margin: 0;\n+  padding: 0.1rem 0.2rem;\n+  text-align: left;\n+  width: 100%;\n+}\n+button.cli-panel-row:hover {\n+  background: color-mix(in srgb, var(--accent) 14%, transparent);\n+}\n .cli-panel-label {\n   color: var(--ink-dim);\n   font-size: 0.72rem;\n   letter-spacing: 0.12em;\n   text-transform: uppercase;\n+  padding-top: 0.12rem;\n }\n .cli-panel-cmd {\n   color: var(--accent);\n\n\nSide B — contributor: tommy-mor\nSide B — commit message:\n[7bb7145d] url stuff\n\nSide B — unified diff (full patch):\ndiff --git a/AGENTS.md b/AGENTS.md\nindex e60b9ba6012593361ef10e8fdd9439cd9932e09b..babb889d6fbfb1fa7176c9e6b7544ae17b61dd2e 100644\n--- a/AGENTS.md\n+++ b/AGENTS.md\n@@ -58,4 +58,4 @@ Use **tmux** for `cargo run --package sorter2-server` (dev server). Rebuild afte\n \n - First `cargo test` / `cargo build --release` is slow; Clojure smoke test always does a release build.\n - `legacy/` and `ideas/` are not part of the workspace build.\n-- **ItemId** for web URLs is a canonical full URL (`https://reddit.com/r/rust`). Rules live in [`server/src/url_rules/`](server/src/url_rules/) (composable Rust, not a config DSL). After changing canonicalization rules, rebuild the projection: `cargo run --package sorter2-server -- replay-index`.\n+- **ItemId** for web URLs is a canonical full URL (`https://reddit.com/r/rust`). Rules live in [`server/src/url_rules/graph.rs`](server/src/url_rules/graph.rs): a semantic graph (DFA on host + path, query params in `Context`) with a generic internet fallback for unknown sites. After changing rules, rebuild the projection: `cargo run --package sorter2-server -- replay-index`.\ndiff --git a/server/src/url_rules/engine.rs b/server/src/url_rules/engine.rs\ndeleted file mode 100644\nindex e29b6b48c08deb7bffe031b1e542b1e25a7bef15..0000000000000000000000000000000000000000\n--- a/server/src/url_rules/engine.rs\n+++ /dev/null\n@@ -1,187 +0,0 @@\n-//! Composable URL normalization primitives.\n-\n-use std::collections::HashMap;\n-\n-use url::Url;\n-\n-/// Mutable URL view used by rule combinators before serializing to a canonical string.\n-#[derive(Debug, Clone)]\n-pub struct ParsedUrl {\n-    pub scheme: String,\n-    pub host: String,\n-    pub path_segments: Vec<String>,\n-    pub query: HashMap<String, String>,\n-    pub fragment: Option<String>,\n-}\n-\n-impl ParsedUrl {\n-    pub fn parse(raw: &str) -> Option<Self> {\n-        let trimmed = raw.trim();\n-        if trimmed.is_empty() {\n-            return None;\n-        }\n-\n-        let with_scheme = if trimmed.contains(\"://\") {\n-            trimmed.to_string()\n-        } else if trimmed.starts_with(\"r/\") || trimmed.starts_with(\"/r/\") {\n-            let rest = trimmed.trim_start_matches('/').trim_start_matches(\"r/\");\n-            format!(\"https://reddit.com/r/{rest}\")\n-        } else if trimmed.contains('.') && !trimmed.starts_with('/') {\n-            format!(\"https://{trimmed}\")\n-        } else {\n-            trimmed.to_string()\n-        };\n-\n-        let url = Url::parse(&with_scheme).ok()?;\n-        let host = url.host_str()?.to_string();\n-        let path_segments: Vec<String> = url\n-            .path_segments()\n-            .map(|segs| segs.filter(|s| !s.is_empty()).map(str::to_string).collect())\n-            .unwrap_or_default();\n-\n-        let mut query = HashMap::new();\n-        for (k, v) in url.query_pairs() {\n-            query.insert(k.into_owned(), v.into_owned());\n-        }\n-\n-        Some(Self {\n-            scheme: url.scheme().to_string(),\n-            path_segments,\n-            query,\n-            fragment: url.fragment().map(str::to_string),\n-            host,\n-        })\n-    }\n-\n-    pub fn with_path_segments(&self, segments: &[String]) -> Self {\n-        let mut u = self.clone();\n-        u.path_segments = segments.to_vec();\n-        u\n-    }\n-\n-    pub fn to_url(&self) -> Option<Url> {\n-        let mut url = if self.path_segments.is_empty() {\n-            Url::parse(&format!(\"{}://{}\", self.scheme, self.host)).ok()?\n-        } else {\n-            let path = format!(\"/{}\", self.path_segments.join(\"/\"));\n-            Url::parse(&format!(\"{}://{}{}\", self.scheme, self.host, path)).ok()?\n-        };\n-        if !self.query.is_empty() {\n-            let mut pairs: Vec<_> = self.query.iter().collect();\n-            pairs.sort_by(|a, b| a.0.cmp(b.0));\n-            url.query_pairs_mut().clear();\n-            for (k, v) in pairs {\n-                url.query_pairs_mut().append_pair(k, v);\n-            }\n-        }\n-        if let Some(ref frag) = self.fragment {\n-            url.set_fragment(Some(frag));\n-        }\n-        Some(url)\n-    }\n-\n-    pub fn canonical_string(&self) -> Option<String> {\n-        let url = self.to_url()?;\n-        let mut s = url.to_string();\n-        if self.path_segments.is_empty() {\n-            s = s.trim_end_matches('/').to_string();\n-        }\n-        Some(s)\n-    }\n-}\n-\n-pub fn force_https(u: &mut ParsedUrl) {\n-    if u.scheme == \"http\" {\n-        u.scheme = \"https\".to_string();\n-    }\n-}\n-\n-pub fn drop_fragment(u: &mut ParsedUrl) {\n-    u.fragment = None;\n-}\n-\n-pub fn strip_www(u: &mut ParsedUrl) {\n-    if u.host.starts_with(\"www.\") {\n-        u.host = u.host[4..].to_string();\n-    }\n-}\n-\n-pub fn lowercase_host(u: &mut ParsedUrl) {\n-    u.host = u.host.to_ascii_lowercase();\n-}\n-\n-pub fn lowercase_path(u: &mut ParsedUrl) {\n-    for seg in &mut u.path_segments {\n-        *seg = seg.to_ascii_lowercase();\n-    }\n-}\n-\n-pub fn clear_query(u: &mut ParsedUrl) {\n-    u.query.clear();\n-}\n-\n-pub fn keep_only_query(u: &mut ParsedUrl, keys: &[&str]) {\n-    u.query\n-        .retain(|k, _| keys.iter().any(|want| want == &k.as_str()));\n-}\n-\n-pub fn strip_tracking_params(u: &mut ParsedUrl) {\n-    u.query.retain(|k, _| {\n-        let lower = k.to_ascii_lowercase();\n-        !(lower.starts_with(\"utm_\")\n-            || matches!(\n-                lower.as_str(),\n-                \"fbclid\" | \"gclid\" | \"ref\" | \"ref_src\" | \"ref_source\" | \"mc_cid\" | \"mc_eid\"\n-            ))\n-    });\n-}\n-\n-pub fn truncate_after_segment(u: &mut ParsedUrl, name: &str, keep: usize) {\n-    if let Some(i) = u.path_segments.iter().position(|s| s == name) {\n-        let end = (i + 1 + keep).min(u.path_segments.len());\n-        u.path_segments.truncate(end);\n-    }\n-}\n-\n-pub fn drop_listing_suffix(u: &mut ParsedUrl, suffixes: &[&str]) {\n-    if u.path_segments.len() >= 3 && u.path_segments.first().map(String::as_str) == Some(\"r\") {\n-        if let Some(last) = u.path_segments.last() {\n-            if suffixes.iter().any(|s| *s == last.as_str()) {\n-                u.path_segments.pop();\n-            }\n-        }\n-    }\n-}\n-\n-pub fn normalize_reddit_host(u: &mut ParsedUrl) {\n-    if matches!(\n-        u.host.as_str(),\n-        \"old.reddit.com\" | \"new.reddit.com\" | \"www.reddit.com\"\n-    ) {\n-        u.host = \"reddit.com\".to_string();\n-    }\n-}\n-\n-pub fn rewrite_youtu_be(u: &mut ParsedUrl) {\n-    if u.host == \"youtu.be\" && u.path_segments.len() == 1 {\n-        let id = u.path_segments[0].clone();\n-        u.host = \"youtube.com\".to_string();\n-        u.path_segments = vec![\"watch\".to_string()];\n-        u.query.insert(\"v\".to_string(), id);\n-    }\n-}\n-\n-pub fn rewrite_youtube_shorts(u: &mut ParsedUrl) {\n-    if u.host == \"youtube.com\" && u.path_segments.first().map(String::as_str) == Some(\"shorts\") {\n-        if let Some(id) = u.path_segments.get(1).cloned() {\n-            u.path_segments = vec![\"watch\".to_string()];\n-            u.query.insert(\"v\".to_string(), id);\n-        }\n-    }\n-}\n-\n-pub fn normalize_youtube_host(u: &mut ParsedUrl) {\n-    if matches!(u.host.as_str(), \"m.youtube.com\" | \"www.youtube.com\") {\n-        u.host = \"youtube.com\".to_string();\n-    }\n-}\ndiff --git a/server/src/url_rules/mod.rs b/server/src/url_rules/mod.rs\nindex 03d53bd3e82d704a01ba3fd8dd02b7d31422c0de..9e1445346ce77a49dd6a7e7713bf9c57aef353cc 100644\n--- a/server/src/url_rules/mod.rs\n+++ b/server/src/url_rules/mod.rs\n@@ -1,8 +1,12 @@\n-//! URL canonicalization and hierarchy rules for [`crate::path_types::ItemId`].\n+//! URL canonicalization and hierarchy via a semantic graph (DFA + generic fallback).\n \n-mod engine;\n+mod graph;\n+mod parse;\n mod registry;\n \n+#[cfg(test)]\n+mod registry_tests;\n+\n pub use registry::{\n     canonicalize_raw, looks_like_url, navigable_breadcrumbs, parent_url, resolve_id, CanonicalResult,\n };\ndiff --git a/server/src/url_rules/registry.rs b/server/src/url_rules/registry.rs\nindex 14514e9af8385fb2b9b2f35eb9ee14d453d4b97c..8e6c012ea1fc74b864307bdacdf5a0f5db5259fc 100644\n--- a/server/src/url_rules/registry.rs\n+++ b/server/src/url_rules/registry.rs\n@@ -1,12 +1,7 @@\n-//! Per-domain canonicalization and hierarchy rules.\n+//! Public API: canonical identity and hierarchy via the URL graph.\n \n-use std::collections::HashSet;\n-\n-use super::engine::{\n-    clear_query, drop_fragment, drop_listing_suffix, force_https, keep_only_query, lowercase_host,\n-    lowercase_path, normalize_reddit_host, normalize_youtube_host, rewrite_youtu_be,\n-    rewrite_youtube_shorts, strip_tracking_params, strip_www, truncate_after_segment, ParsedUrl,\n-};\n+use super::graph::graph;\n+use super::parse::UrlParts;\n \n /// Result of canonicalizing a raw URL string.\n #[derive(Debug, Clone, PartialEq, Eq)]\n@@ -16,71 +11,16 @@ pub struct CanonicalResult {\n     pub alias_of: Option<String>,\n }\n \n-fn apply_global(u: &mut ParsedUrl) {\n-    force_https(u);\n-    drop_fragment(u);\n-    strip_www(u);\n-    lowercase_host(u);\n-    strip_tracking_params(u);\n-}\n-\n-fn normalize_reddit(u: &mut ParsedUrl) {\n-    normalize_reddit_host(u);\n-    lowercase_path(u);\n-    truncate_after_segment(u, \"comments\", 1);\n-    drop_listing_suffix(u, &[\"hot\", \"top\", \"new\", \"rising\", \"controversial\"]);\n-    clear_query(u);\n-}\n-\n-fn normalize_youtube(u: &mut ParsedUrl) {\n-    rewrite_youtu_be(u);\n-    normalize_youtube_host(u);\n-    rewrite_youtube_shorts(u);\n-    keep_only_query(u, &[\"v\", \"list\"]);\n-}\n-\n-fn normalize_default(_u: &mut ParsedUrl) {\n-    // Global rules only.\n-}\n-\n-fn domain_key(host: &str) -> &'static str {\n-    if host == \"reddit.com\" || host.ends_with(\".reddit.com\") {\n-        \"reddit.com\"\n-    } else if host == \"youtube.com\" || host == \"youtu.be\" {\n-        \"youtube.com\"\n-    } else {\n-        \"default\"\n-    }\n-}\n-\n-fn normalize_for_host(u: &mut ParsedUrl) {\n-    apply_global(u);\n-    match domain_key(&u.host) {\n-        \"reddit.com\" => normalize_reddit(u),\n-        \"youtube.com\" => normalize_youtube(u),\n-        _ => normalize_default(u),\n-    }\n-}\n-\n-/// Structural path segments that must not become standalone tree nodes when more path follows.\n-fn structural_trailing(host: &str) -> &'static [&'static str] {\n-    match domain_key(host) {\n-        \"reddit.com\" => &[\"comments\"],\n-        _ => &[],\n-    }\n-}\n-\n /// Canonicalize a raw URL. Returns `None` if the input is not URL-like.\n pub fn canonicalize_raw(raw: &str) -> Option<CanonicalResult> {\n     let trimmed = raw.trim();\n     if trimmed.is_empty() {\n         return None;\n     }\n-    let mut u = ParsedUrl::parse(trimmed)?;\n-    let input_snapshot = u.canonical_string()?;\n-    normalize_for_host(&mut u);\n-    let canonical = u.canonical_string()?;\n-    let alias_of = if input_snapshot != canonical {\n+    let parts = UrlParts::parse(trimmed)?;\n+    let g = graph();\n+    let canonical = g.resolve_canonical(&parts)?;\n+    let alias_of = if trimmed != canonical {\n         Some(trimmed.to_string())\n     } else {\n         None\n@@ -98,35 +38,14 @@ pub fn resolve_id(raw: &str) -> Option<String> {\n \n /// Navigable ancestor URLs from domain root up to and including `canonical` (full URLs).\n pub fn navigable_breadcrumbs(canonical: &str) -> Vec<String> {\n-    let Some(u) = ParsedUrl::parse(canonical) else {\n-        return vec![canonical.to_string()];\n+    let parts = match UrlParts::parse(canonical) {\n+        Some(p) => p,\n+        None => return vec![canonical.to_string()],\n     };\n-    let structural: HashSet<&str> = structural_trailing(&u.host).iter().copied().collect();\n-    let n = u.path_segments.len();\n-    let mut out = Vec::new();\n-\n-    // Domain root (no path segments).\n-    if let Some(base) = u.with_path_segments(&[]).canonical_string() {\n-        out.push(base);\n-    }\n-\n-    for i in 0..n {\n-        let segs: Vec<String> = u.path_segments[..=i].to_vec();\n-        let is_last = i == n - 1;\n-        let seg = u.path_segments[i].as_str();\n-        if structural.contains(seg) && !is_last {\n-            continue;\n-        }\n-        if let Some(url) = u.with_path_segments(&segs).canonical_string() {\n-            if out.last() != Some(&url) {\n-                out.push(url);\n-            }\n-        }\n-    }\n-    out\n+    graph().breadcrumbs(&parts)\n }\n \n-/// Immediate parent scope URL, or `None` for tree root / opaque single-segment ids.\n+/// Immediate parent scope URL, or `None` for tree root.\n pub fn parent_url(canonical: &str) -> Option<String> {\n     let crumbs = navigable_breadcrumbs(canonical);\n     if crumbs.len() <= 1 {\n@@ -148,88 +67,3 @@ pub fn looks_like_url(raw: &str) -> bool {\n         || t.starts_with(\"youtu.be/\")\n }\n \n-#[cfg(test)]\n-mod tests {\n-    use super::*;\n-\n-    #[test]\n-    fn reddit_post_drops_slug_and_normalizes_host() {\n-        let r = canonicalize_raw(\n-            \"https://old.reddit.com/r/AmItheAsshole/comments/1trnvdl/aita_for_cancelling/\",\n-        )\n-        .unwrap();\n-        assert_eq!(\n-            r.canonical,\n-            \"https://reddit.com/r/amitheasshole/comments/1trnvdl\"\n-        );\n-    }\n-\n-    #[test]\n-    fn reddit_strips_query_and_listing() {\n-        assert_eq!(\n-            canonicalize_raw(\"https://www.reddit.com/r/rust/?sort=top\")\n-                .unwrap()\n-                .canonical,\n-            \"https://reddit.com/r/rust\"\n-        );\n-        assert_eq!(\n-            canonicalize_raw(\"https://www.reddit.com/r/programming/hot\")\n-                .unwrap()\n-                .canonical,\n-            \"https://reddit.com/r/programming\"\n-        );\n-    }\n-\n-    #[test]\n-    fn reddit_short_path() {\n-        assert_eq!(\n-            canonicalize_raw(\"r/rust\").unwrap().canonical,\n-            \"https://reddit.com/r/rust\"\n-        );\n-    }\n-\n-    #[test]\n-    fn reddit_breadcrumbs_skip_phantom_comments() {\n-        let post = \"https://reddit.com/r/aww/comments/1trnvdl\";\n-        let crumbs = navigable_breadcrumbs(post);\n-        assert!(!crumbs.iter().any(|c| c.ends_with(\"/comments\")));\n-        assert_eq!(\n-            crumbs.last().map(String::as_str),\n-            Some(post)\n-        );\n-        assert!(crumbs.contains(&\"https://reddit.com/r/aww\".to_string()));\n-    }\n-\n-    #[test]\n-    fn reddit_parent_of_post_is_subreddit() {\n-        assert_eq!(\n-            parent_url(\"https://reddit.com/r/aww/comments/1trnvdl\").as_deref(),\n-            Some(\"https://reddit.com/r/aww\")\n-        );\n-    }\n-\n-    #[test]\n-    fn youtube_youtu_be_and_watch_same_canonical() {\n-        let a = canonicalize_raw(\"https://youtu.be/dQw4w9WgXcQ\").unwrap().canonical;\n-        let b = canonicalize_raw(\"https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=10\").unwrap();\n-        assert_eq!(a, b.canonical);\n-        assert_eq!(a, \"https://youtube.com/watch?v=dQw4w9WgXcQ\");\n-    }\n-\n-    #[test]\n-    fn legacy_schemeless_upgrades() {\n-        assert_eq!(\n-            canonicalize_raw(\"reddit.com/r/rust/comments/aaa/announcing_rust_199\")\n-                .unwrap()\n-                .canonical,\n-            \"https://reddit.com/r/rust/comments/aaa\"\n-        );\n-    }\n-\n-    #[test]\n-    fn alias_recorded_when_input_differs() {\n-        let r = canonicalize_raw(\"https://youtu.be/abc123\").unwrap();\n-        assert_eq!(r.canonical, \"https://youtube.com/watch?v=abc123\");\n-        assert!(r.alias_of.is_some());\n-    }\n-}\n","role":"user"}],"model":"~x-ai/grok-latest"}