{"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[3f35edab] progress\n\nSide A — unified diff (full patch):\ndiff --git a/server/src/api/mod.rs b/server/src/api/mod.rs\nindex a10ce662105cff8fad949c6b83f7035ce79bed18..a986f706ea4b261cbaf004c02b4cf84184b41371 100644\n--- a/server/src/api/mod.rs\n+++ b/server/src/api/mod.rs\n@@ -3,6 +3,7 @@ mod helpers;\n mod rpc;\n mod stream;\n mod validate;\n+mod ui_html;\n mod web_post;\n \n pub use auth::{\n@@ -33,6 +34,7 @@ pub use stream::{get_html_stream, get_stream};\n \n pub use validate::{normalize_room_and_thread, validate_ingest_document, ValidatedIngest};\n \n+pub use ui_html::post_ui_html;\n pub use web_post::{check_web_ingest, post_web_ingest, post_web_redact};\n \n #[cfg(test)]\ndiff --git a/server/src/api/ui_html.rs b/server/src/api/ui_html.rs\nnew file mode 100644\nindex 0000000000000000000000000000000000000000..2b40a72059981d558768f73d189b991f3448c257\n--- /dev/null\n+++ b/server/src/api/ui_html.rs\n@@ -0,0 +1,139 @@\n+//! Single `POST /ui` entry for browser [`crate::html::ui_action::HtmlUiAction`] (JSON in `__rpc__` + holes).\n+\n+use axum::{\n+    body::Body,\n+    extract::State,\n+    http::{header, HeaderMap, StatusCode},\n+    response::{IntoResponse, Response},\n+    Form,\n+};\n+use axum_extra::extract::cookie::CookieJar;\n+use std::collections::HashMap;\n+\n+use crate::{\n+    api::{\n+        auth::optional_principal,\n+        web_post::{run_check_web_ingest, run_post_web_ingest, run_post_web_redact, WebPostForm, WebRedactForm},\n+    },\n+    html::{\n+        fragment_public_new_thread_form, fragment_room_new_thread_form, login_to_post_hint_markup,\n+        parse_html_ui_from_form, user_can_post_room, user_can_view_room, HtmlUiAction, JsBuilder,\n+        ThreadNav,\n+    },\n+    state::AppState,\n+};\n+\n+pub async fn post_ui_html(\n+    State(state): State<AppState>,\n+    headers: HeaderMap,\n+    jar: CookieJar,\n+    Form(form): Form<HashMap<String, String>>,\n+) -> impl IntoResponse {\n+    let action = match parse_html_ui_from_form(&form) {\n+        Ok(a) => a,\n+        Err(e) => return ui_js_warn(&e.to_string()).into_response(),\n+    };\n+\n+    match action {\n+        HtmlUiAction::PostIngest {\n+            room,\n+            thread_tag,\n+            text,\n+            error_target,\n+            form_id,\n+        } => {\n+            run_post_web_ingest(\n+                &state,\n+                &headers,\n+                &jar,\n+                WebPostForm {\n+                    room,\n+                    thread_tag,\n+                    text,\n+                    error_target,\n+                    form_id,\n+                },\n+            )\n+            .await\n+        }\n+        HtmlUiAction::CheckIngest {\n+            room,\n+            thread_tag,\n+            text,\n+            error_target,\n+            form_id,\n+        } => {\n+            run_check_web_ingest(\n+                &state,\n+                &headers,\n+                &jar,\n+                WebPostForm {\n+                    room,\n+                    thread_tag,\n+                    text,\n+                    error_target,\n+                    form_id,\n+                },\n+            )\n+            .await\n+        }\n+        HtmlUiAction::RedactPost { post_id } => {\n+            run_post_web_redact(&state, &headers, &jar, WebRedactForm { post_id }).await\n+        }\n+        HtmlUiAction::ExpandPublicNewThreadForm => {\n+            let reduced = state.reduced.read().await;\n+            let user = optional_principal(&headers, &jar, &reduced);\n+            drop(reduced);\n+            let markup = if user.is_some() {\n+                fragment_public_new_thread_form(true)\n+            } else {\n+                login_to_post_hint_markup()\n+            };\n+            JsBuilder::new()\n+                .morph_selector(\"#public-new-thread-ui-slot\", markup)\n+                .into_response()\n+        }\n+        HtmlUiAction::ExpandRoomNewThreadForm { room_wire } => {\n+            let room_wire = room_wire.trim().to_string();\n+            if room_wire.is_empty() {\n+                return ui_js_warn(\"missing room\").into_response();\n+            }\n+            let reduced = state.reduced.read().await;\n+            let user = optional_principal(&headers, &jar, &reduced);\n+            if !reduced.rooms.contains(&room_wire) {\n+                drop(reduced);\n+                return ui_js_warn(\"room not found\").into_response();\n+            }\n+            if !user_can_view_room(&reduced, &room_wire, user.as_deref()) {\n+                drop(reduced);\n+                return ui_js_warn(\"forbidden\").into_response();\n+            }\n+            let can_post = user\n+                .as_ref()\n+                .map(|u| user_can_post_room(&reduced, &room_wire, u))\n+                .unwrap_or(false);\n+            drop(reduced);\n+            let Some(nav) = ThreadNav::from_room_id(&room_wire) else {\n+                return ui_js_warn(\"bad room\").into_response();\n+            };\n+            let markup = if can_post {\n+                fragment_room_new_thread_form(&nav, true)\n+            } else {\n+                login_to_post_hint_markup()\n+            };\n+            JsBuilder::new()\n+                .morph_selector(\"#room-new-thread-ui-slot\", markup)\n+                .into_response()\n+        }\n+    }\n+}\n+\n+fn ui_js_warn(msg: &str) -> Response {\n+    use crate::html::js_string_literal;\n+    let js = format!(\"console.warn({});\", js_string_literal(msg));\n+    Response::builder()\n+        .status(StatusCode::OK)\n+        .header(header::CONTENT_TYPE, \"text/javascript; charset=utf-8\")\n+        .body(Body::from(js))\n+        .unwrap()\n+}\ndiff --git a/server/src/api/web_post.rs b/server/src/api/web_post.rs\nindex a64010e382d3039821c836a5529adad0fe67cce5..265025f41ff1548d05b2d2d5d84202245388053f 100644\n--- a/server/src/api/web_post.rs\n+++ b/server/src/api/web_post.rs\n@@ -222,8 +222,18 @@ pub async fn post_web_redact(\n     jar: CookieJar,\n     Form(form): Form<WebRedactForm>,\n ) -> impl IntoResponse {\n+    run_post_web_redact(&state, &headers, &jar, form).await\n+}\n+\n+/// Shared with [`crate::api::ui_html::post_ui_html`].\n+pub(crate) async fn run_post_web_redact(\n+    state: &AppState,\n+    headers: &HeaderMap,\n+    jar: &CookieJar,\n+    form: WebRedactForm,\n+) -> Response {\n     let reduced = state.reduced.read().await;\n-    let Some(_username) = optional_principal(&headers, &jar, &reduced) else {\n+    let Some(_username) = optional_principal(headers, jar, &reduced) else {\n         drop(reduced);\n         return js_redirect(\"/login\").into_response();\n     };\n@@ -239,8 +249,8 @@ pub async fn post_web_redact(\n         return js_redirect(\"/login\").into_response();\n     };\n \n-    match rpc_post_redact(&state, &headers, form.post_id).await {\n-        Ok(RpcResult::RedactPostOk {}) => redact_success_response(&state).await.into_response(),\n+    match rpc_post_redact(state, headers, form.post_id).await {\n+        Ok(RpcResult::RedactPostOk {}) => redact_success_response(state).await.into_response(),\n         Ok(_) => (StatusCode::BAD_REQUEST, \"unexpected response\").into_response(),\n         Err((msg, hint)) => {\n             let detail = hint.as_deref().unwrap_or(\"\");\n@@ -255,8 +265,18 @@ pub async fn post_web_ingest(\n     jar: CookieJar,\n     Form(form): Form<WebPostForm>,\n ) -> impl IntoResponse {\n+    run_post_web_ingest(&state, &headers, &jar, form).await\n+}\n+\n+/// Shared with [`crate::api::ui_html::post_ui_html`] (`POST /ui`).\n+pub(crate) async fn run_post_web_ingest(\n+    state: &AppState,\n+    headers: &HeaderMap,\n+    jar: &CookieJar,\n+    form: WebPostForm,\n+) -> Response {\n     let reduced = state.reduced.read().await;\n-    let Some(_username) = optional_principal(&headers, &jar, &reduced) else {\n+    let Some(_username) = optional_principal(headers, jar, &reduced) else {\n         drop(reduced);\n         return js_redirect(\"/login\").into_response();\n     };\n@@ -282,8 +302,8 @@ pub async fn post_web_ingest(\n             .into_response();\n     }\n \n-    match rpc_post_with_bearer(&state, &bearer, room.clone(), thread_tag.clone(), text).await {\n-        Ok(RpcResult::PostOk { .. }) => post_success_response(&state, &form, &headers, &jar)\n+    match rpc_post_with_bearer(state, &bearer, room.clone(), thread_tag.clone(), text).await {\n+        Ok(RpcResult::PostOk { .. }) => post_success_response(state, &form, headers, jar)\n             .await\n             .into_response(),\n         Ok(_) => form_js_error(&form, \"unexpected response\", \"Post did not return PostOk.\").into_response(),\n@@ -297,8 +317,18 @@ pub async fn check_web_ingest(\n     jar: CookieJar,\n     Form(form): Form<WebPostForm>,\n ) -> impl IntoResponse {\n+    run_check_web_ingest(&state, &headers, &jar, form).await\n+}\n+\n+/// Shared with [`crate::api::ui_html::post_ui_html`] (`POST /ui`).\n+pub(crate) async fn run_check_web_ingest(\n+    state: &AppState,\n+    headers: &HeaderMap,\n+    jar: &CookieJar,\n+    form: WebPostForm,\n+) -> Response {\n     let reduced = state.reduced.read().await;\n-    let Some(_username) = optional_principal(&headers, &jar, &reduced) else {\n+    let Some(_username) = optional_principal(headers, jar, &reduced) else {\n         drop(reduced);\n         return js_redirect(\"/login\").into_response();\n     };\n@@ -324,7 +354,7 @@ pub async fn check_web_ingest(\n         return js_clear_errors(&form_error_target(&form)).into_response();\n     }\n \n-    match rpc_check_with_bearer(&state, &bearer, room, form.text.clone()).await {\n+    match rpc_check_with_bearer(state, &bearer, room, form.text.clone()).await {\n         Ok(RpcResult::CheckOk { .. }) => js_clear_errors(&form_error_target(&form)).into_response(),\n         Ok(_) => form_js_error(&form, \"unexpected response\", \"Check did not return CheckOk.\").into_response(),\n         Err((msg, hint)) => form_js_error(&form, &msg, hint.as_deref().unwrap_or(\"\")).into_response(),\ndiff --git a/server/src/form_template.rs b/server/src/form_template.rs\nnew file mode 100644\nindex 0000000000000000000000000000000000000000..3709c2c09a859da006e4af173413d5d235bc19be\n--- /dev/null\n+++ b/server/src/form_template.rs\n@@ -0,0 +1,142 @@\n+//! Plan2-style JSON templates with `{\"$form\": \"field_name\"}` holes, filled from\n+//! `application/x-www-form-urlencoded` (or any `String` → `String` map) **before**\n+//! deserializing into a typed struct.\n+//!\n+//! # Wire format\n+//!\n+//! Templates are **compact JSON** (`serde_json::to_string`): one line, no pretty\n+//! printing, strings escaped per JSON rules (`\\\"`, `\\n`, etc.). Embed that string\n+//! in HTML attributes or text nodes with normal HTML escaping (e.g. maud), not\n+//! bespoke encodings.\n+//!\n+//! # Power vs flat hidden fields\n+//!\n+//! A form is always a string→string map. You can fake depth with dotted keys (`a.b.c`),\n+//! but one structured blob (`__rpc__` = compact JSON) gives you nested objects,\n+//! arrays, and optional fields without inventing a new naming scheme each time.\n+//!\n+//! # Security\n+//!\n+//! Substitution runs **before** `serde` into your command type. It does not fix\n+//! authorization: if the client can replace the hidden `__rpc__` value, they can\n+//! change the command shape unless you validate (signed blob, server-side session\n+//! context, or treat the blob as hints only). Same threat model as any hidden field.\n+\n+use serde::Serialize;\n+use serde_json::Value;\n+use std::collections::HashMap;\n+\n+/// Serialize a value to compact JSON for a hidden `__rpc__` (or similar) field.\n+pub fn template_json_compact<T: Serialize>(v: &T) -> serde_json::Result<String> {\n+    serde_json::to_string(v)\n+}\n+\n+/// Recursively walk the JSON AST and replace `{\"$form\": \"key\"}` with the submitted\n+/// string for `key` (empty if missing). Other keys are unchanged.\n+pub fn substitute_form_vars(val: &mut Value, form_data: &HashMap<String, String>) {\n+    match val {\n+        Value::Object(map) => {\n+            if map.len() == 1 {\n+                if let Some(Value::String(field_name)) = map.get(\"$form\") {\n+                    let submitted = form_data\n+                        .get(field_name.as_str())\n+                        .map(|s| s.as_str())\n+                        .unwrap_or(\"\");\n+                    *val = Value::String(submitted.to_string());\n+                    return;\n+                }\n+            }\n+            for v in map.values_mut() {\n+                substitute_form_vars(v, form_data);\n+            }\n+        }\n+        Value::Array(arr) => {\n+            for v in arr.iter_mut() {\n+                substitute_form_vars(v, form_data);\n+            }\n+        }\n+        _ => {}\n+    }\n+}\n+\n+/// Parse JSON, apply [`substitute_form_vars`], return the mutated value.\n+pub fn fill_template_from_form(\n+    template_json: &str,\n+    form_data: &HashMap<String, String>,\n+) -> Result<Value, serde_json::Error> {\n+    let mut v: Value = serde_json::from_str(template_json)?;\n+    substitute_form_vars(&mut v, form_data);\n+    Ok(v)\n+}\n+\n+#[cfg(test)]\n+mod tests {\n+    use super::*;\n+    use serde::Deserialize;\n+\n+    #[derive(Debug, Deserialize, PartialEq, Eq)]\n+    struct Demo {\n+        room: String,\n+        thread_tag: String,\n+        nested: Nested,\n+    }\n+\n+    #[derive(Debug, Deserialize, PartialEq, Eq)]\n+    struct Nested {\n+        text: String,\n+    }\n+\n+    #[test]\n+    fn holes_become_strings() {\n+        let json = r#\"{\n+            \"room\": \"public\",\n+            \"thread_tag\": {\"$form\": \"tag\"},\n+            \"nested\": {\"text\": {\"$form\": \"body\"}}\n+        }\"#;\n+        let mut form = HashMap::new();\n+        form.insert(\"tag\".into(), \"foo\".into());\n+        form.insert(\"body\".into(), \"hello\\nworld\".into());\n+\n+        let v = fill_template_from_form(json, &form).unwrap();\n+        let d: Demo = serde_json::from_value(v).unwrap();\n+        assert_eq!(\n+            d,\n+            Demo {\n+                room: \"public\".into(),\n+                thread_tag: \"foo\".into(),\n+                nested: Nested {\n+                    text: \"hello\\nworld\".into(),\n+                },\n+            }\n+        );\n+    }\n+\n+    #[test]\n+    fn missing_form_key_is_empty_string() {\n+        let json = r#\"{\"x\": {\"$form\": \"nope\"}}\"#;\n+        let mut form = HashMap::new();\n+        form.insert(\"other\".into(), \"y\".into());\n+        let v = fill_template_from_form(json, &form).unwrap();\n+        assert_eq!(v[\"x\"], \"\");\n+    }\n+\n+    #[test]\n+    fn array_of_holes() {\n+        let json = r#\"{\"items\": [{\"$form\": \"a\"}, {\"$form\": \"b\"}]}\"#;\n+        let mut form = HashMap::new();\n+        form.insert(\"a\".into(), \"1\".into());\n+        form.insert(\"b\".into(), \"2\".into());\n+        let v = fill_template_from_form(json, &form).unwrap();\n+        assert_eq!(v[\"items\"], serde_json::json!([\"1\", \"2\"]));\n+    }\n+\n+    #[test]\n+    fn template_json_compact_escapes_and_single_line() {\n+        let s = template_json_compact(&serde_json::json!({\n+            \"x\": \"quote\\\"and\\nnewline\"\n+        }))\n+        .unwrap();\n+        assert!(!s.contains('\\n'));\n+        assert!(s.contains(\"\\\\\\\"\") || s.contains(\"\\\\n\"));\n+    }\n+}\ndiff --git a/server/src/html/forum.rs b/server/src/html/forum.rs\nindex f789e347dc136f8ffd356f4492f0bd76cea04bf0..b1c037f3dd93c7bb96d6624cab6019228432c501 100644\n--- a/server/src/html/forum.rs\n+++ b/server/src/html/forum.rs\n@@ -11,12 +11,15 @@ use crate::{\n     api::optional_principal,\n     canonical_path::{canonicalize_item, canonicalize_tag},\n     events::ThreadCapability,\n+    form_template::template_json_compact,\n     identity::parse_username,\n     reducer::{scope_from_room_wire, ReducerState, ScopeId},\n     state::AppState,\n     timeago,\n };\n \n+use super::ui_action::{HtmlUiAction, UI_RPC_FIELD};\n+\n use super::{\n     bc_segment, bc_threads, cli_panel, layout, now_ms, profile_href, recency_class,\n     render_linkified_with_embeds_in_scope, theme_from_jar, theme_next_from_uri, JsBuilder,\n@@ -289,7 +292,7 @@ fn rooms_for_user(reduced: &ReducerState, username: &str) -> Vec<String> {\n     v\n }\n \n-fn user_can_view_room(reduced: &ReducerState, room_id: &str, username: Option<&str>) -> bool {\n+pub(crate) fn user_can_view_room(reduced: &ReducerState, room_id: &str, username: Option<&str>) -> bool {\n     if !reduced.rooms.contains(room_id) {\n         return false;\n     }\n@@ -299,7 +302,7 @@ fn user_can_view_room(reduced: &ReducerState, room_id: &str, username: Option<&s\n     reduced.user_has_cap(room_id, u, ThreadCapability::View)\n }\n \n-fn user_can_post_room(reduced: &ReducerState, room_id: &str, username: &str) -> bool {\n+pub(crate) fn user_can_post_room(reduced: &ReducerState, room_id: &str, username: &str) -> bool {\n     reduced.user_has_cap(room_id, username, ThreadCapability::Post)\n }\n \n@@ -591,7 +594,6 @@ pub async fn home(\n     let nav = ThreadNav::public();\n     let reduced_read = state.reduced.read().await;\n     let strip = auth_strip(&headers, &jar, &reduced_read);\n-    let show_forms = user.is_some();\n     drop(reduced_read);\n \n     let page = layout(\n@@ -617,8 +619,14 @@ pub async fn home(\n                 }\n             }\n             p class=\"muted\" { \"dark = time-ordered · light = vote-ranked\" }\n+            div class=\"thread-feed-toolbar\" {\n+                form method=\"POST\" action=\"/ui\" {\n+                    input type=\"hidden\" name=(UI_RPC_FIELD) value=(expand_public_new_thread_rpc_value());\n+                    button type=\"submit\" class=\"section-add-btn\" { \"+\" }\n+                }\n+            }\n+            div id=\"public-new-thread-ui-slot\" {}\n             (render_thread_feed(Some(&nav), \"thread-feed\", &public_rows, now))\n-            (new_thread_form_public(show_forms))\n             (cli_panel(\"npx slugsocial public forum list\"))\n         },\n         None,\n@@ -901,7 +909,13 @@ pub async fn room_page(\n             h3 { \"threads\" }\n             (render_thread_feed(Some(&nav), \"room-thread-feed\", &rows, now))\n             @if show_new {\n-                (new_thread_form_for_room(&nav, show_new))\n+                div class=\"thread-feed-toolbar\" {\n+                    form method=\"POST\" action=\"/ui\" {\n+                        input type=\"hidden\" name=(UI_RPC_FIELD) value=(expand_room_new_thread_rpc_value(&nav));\n+                        button type=\"submit\" class=\"section-add-btn\" { \"+\" }\n+                    }\n+                }\n+                div id=\"room-new-thread-ui-slot\" {}\n             }\n             (cli_panel(&forum_cli))\n             (cli_panel(&garden_cli))\n@@ -945,6 +959,31 @@ fn new_thread_form_for_room(nav: &ThreadNav, show: bool) -> Markup {\n     }\n }\n \n+pub(crate) fn expand_public_new_thread_rpc_value() -> String {\n+    template_json_compact(&HtmlUiAction::ExpandPublicNewThreadForm).expect(\"static json\")\n+}\n+\n+pub(crate) fn expand_room_new_thread_rpc_value(nav: &ThreadNav) -> String {\n+    template_json_compact(&HtmlUiAction::ExpandRoomNewThreadForm {\n+        room_wire: nav.room_wire.clone(),\n+    })\n+    .expect(\"static json\")\n+}\n+\n+pub(crate) fn login_to_post_hint_markup() -> Markup {\n+    html! {\n+        p class=\"muted\" { \"log in to post\" }\n+    }\n+}\n+\n+pub(crate) fn fragment_public_new_thread_form(show: bool) -> Markup {\n+    new_thread_form_public(show)\n+}\n+\n+pub(crate) fn fragment_room_new_thread_form(nav: &ThreadNav, show: bool) -> Markup {\n+    new_thread_form_for_room(nav, show)\n+}\n+\n async fn thread_post_view_inner(\n     state: AppState,\n     tag: String,\ndiff --git a/server/src/html/mod.rs b/server/src/html/mod.rs\nindex 53041a0cf0b30e6f20749c92ecc15a4e9ac56e09..a4fd2dd60ac283f7eb9b2e64522501b21d1e27e9 100644\n--- a/server/src/html/mod.rs\n+++ b/server/src/html/mod.rs\n@@ -16,6 +16,7 @@ mod editor;\n mod forum;\n mod garden;\n mod search;\n+pub mod ui_action;\n use breadcrumb_path::OntologyPath;\n \n pub use auth::{auth_complete_page, auth_signed_in_fragment, choose_username_error_fragment, choose_username_page};\n@@ -27,9 +28,15 @@ pub use forum::{\n     thread_post_collapse_deleted, thread_post_expand, thread_post_expand_deleted, thread_post_view,\n     thread_view, ThreadNav,\n };\n+\n+pub(crate) use forum::{\n+    fragment_public_new_thread_form, fragment_room_new_thread_form, login_to_post_hint_markup,\n+    user_can_post_room, user_can_view_room,\n+};\n pub use garden::{garden_index, ontology_path, room_garden_index, room_ontology_path};\n pub use search::{search_page, search_results_fragment};\n pub use forum::user_profile_page;\n+pub use ui_action::{parse_html_ui_from_form, HtmlUiAction, HtmlUiParseError, UI_RPC_FIELD};\n \n /// Public profile URL path for a stored username (no `@`).\n pub(crate) fn profile_href(username: &str) -> String {\ndiff --git a/server/src/html/ui_action.rs b/server/src/html/ui_action.rs\nnew file mode 100644\nindex 0000000000000000000000000000000000000000..3bc69ecbb7e16a59d2d393b2d59f9cd3fedb12b1\n--- /dev/null\n+++ b/server/src/html/ui_action.rs\n@@ -0,0 +1,116 @@\n+//! Browser-only UI commands: JSON in hidden `__rpc__` plus hole fill ([`crate::form_template`]).\n+//! Not part of [`slug_types::RpcCommand`] (CLI / JSON API).\n+\n+use crate::form_template::fill_template_from_form;\n+use serde::{Deserialize, Serialize};\n+use serde_json::Value;\n+use std::collections::HashMap;\n+use thiserror::Error;\n+\n+/// Form field name for the compact JSON template (possibly with `{\"$form\":\"…\"}` holes).\n+pub const UI_RPC_FIELD: &str = \"__rpc__\";\n+\n+/// HTML form / fetch `POST /ui` payload after template fill and deserialization.\n+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]\n+#[serde(tag = \"action\", rename_all = \"snake_case\")]\n+pub enum HtmlUiAction {\n+    /// Same semantics as `POST /post` (forum ingest).\n+    PostIngest {\n+        room: String,\n+        thread_tag: String,\n+        text: String,\n+        #[serde(default)]\n+        error_target: Option<String>,\n+        #[serde(default)]\n+        form_id: Option<String>,\n+    },\n+    /// Same as `POST /post/check`.\n+    CheckIngest {\n+        room: String,\n+        thread_tag: String,\n+        text: String,\n+        #[serde(default)]\n+        error_target: Option<String>,\n+        #[serde(default)]\n+        form_id: Option<String>,\n+    },\n+    /// Same as `POST /post/redact`.\n+    RedactPost {\n+        post_id: String,\n+    },\n+    /// Morph `#public-new-thread-ui-slot` to the new-thread form (or login hint).\n+    ExpandPublicNewThreadForm,\n+    /// Morph `#room-new-thread-ui-slot` for the given room wire id.\n+    ExpandRoomNewThreadForm {\n+        room_wire: String,\n+    },\n+}\n+\n+#[derive(Debug, Error)]\n+pub enum HtmlUiParseError {\n+    #[error(\"missing __rpc__ field\")]\n+    MissingRpc,\n+    #[error(\"invalid template json: {0}\")]\n+    Template(serde_json::Error),\n+    #[error(\"invalid ui action: {0}\")]\n+    Action(serde_json::Error),\n+}\n+\n+/// Parse `__rpc__` JSON, apply `$form` holes from the rest of the form map, deserialize.\n+pub fn parse_html_ui_from_form(form: &HashMap<String, String>) -> Result<HtmlUiAction, HtmlUiParseError> {\n+    let template = form\n+        .get(UI_RPC_FIELD)\n+        .ok_or(HtmlUiParseError::MissingRpc)?;\n+    let mut hole_map = form.clone();\n+    hole_map.remove(UI_RPC_FIELD);\n+    let v: Value = fill_template_from_form(template, &hole_map).map_err(HtmlUiParseError::Template)?;\n+    serde_json::from_value(v).map_err(HtmlUiParseError::Action)\n+}\n+\n+#[cfg(test)]\n+mod tests {\n+    use super::*;\n+\n+    #[test]\n+    fn round_trip_post_ingest_with_holes() {\n+        let template = serde_json::json!({\n+            \"action\": \"post_ingest\",\n+            \"room\": \"public\",\n+            \"thread_tag\": {\"$form\": \"thread_tag\"},\n+            \"text\": {\"$form\": \"text\"},\n+            \"error_target\": \"e\",\n+            \"form_id\": \"f\",\n+        });\n+        let mut form = HashMap::new();\n+        form.insert(\n+            UI_RPC_FIELD.to_string(),\n+            serde_json::to_string(&template).unwrap(),\n+        );\n+        form.insert(\"thread_tag\".into(), \"x\".into());\n+        form.insert(\"text\".into(), \"body\".into());\n+\n+        let a = parse_html_ui_from_form(&form).unwrap();\n+        assert_eq!(\n+            a,\n+            HtmlUiAction::PostIngest {\n+                room: \"public\".into(),\n+                thread_tag: \"x\".into(),\n+                text: \"body\".into(),\n+                error_target: Some(\"e\".into()),\n+                form_id: Some(\"f\".into()),\n+            }\n+        );\n+    }\n+\n+    #[test]\n+    fn expand_public_unit_variant() {\n+        let template = serde_json::json!({ \"action\": \"expand_public_new_thread_form\" });\n+        let mut form = HashMap::new();\n+        form.insert(\n+            UI_RPC_FIELD.to_string(),\n+            serde_json::to_string(&template).unwrap(),\n+        );\n+        let a = parse_html_ui_from_form(&form).unwrap();\n+        assert_eq!(a, HtmlUiAction::ExpandPublicNewThreadForm);\n+    }\n+}\ndiff --git a/server/src/lib.rs b/server/src/lib.rs\nindex b9d4b79791ba8dd3a3c26ff777943a2548092de5..5f5b6b0f01b29350c7415e5801ec5caa74f0b452 100644\n--- a/server/src/lib.rs\n+++ b/server/src/lib.rs\n@@ -3,6 +3,7 @@ pub mod paths;\n pub mod api;\n pub mod canonical_path;\n pub mod dsl;\n+pub mod form_template;\n pub mod html;\n pub mod event_log;\n pub mod events;\n@@ -33,6 +34,7 @@ pub fn create_app(state: AppState) -> Router {\n         .route(\"/post\", post(api::post_web_ingest))\n         .route(\"/post/redact\", post(api::post_web_redact))\n         .route(\"/post/check\", post(api::check_web_ingest))\n+        .route(\"/ui\", post(api::post_ui_html))\n         .route(\"/theme\", post(crate::html::post_theme))\n         .route(\"/sse\", get(api::get_html_stream))\n         .route(\"/stream\", get(api::get_stream))\n\n\nSide B — contributor: tommy-mor\nSide B — commit message:\n[8f6be6d0] Add copy button for garden rankings (markdown clipboard) (#168)\n\n* Add garden ranking markdown copy button via POST /ui\n\nIntroduce HtmlUiAction::CopyGardenRank that rebuilds the visible child\nranking and returns JsBuilder clipboard JS (fetch → eval), matching\nCopyThread. Place a copy control on garden ranking headings; clipboard\ntext is a concise markdown numbered list with unranked bullets.\n\nCo-authored-by: tommy <thmorriss@gmail.com>\n\n* Fix paren balance in garden ranking copy browser test\n\nCo-authored-by: tommy <thmorriss@gmail.com>\n\n---------\n\nCo-authored-by: Cursor Agent <cursoragent@cursor.com>\n\nSide B — unified diff (full patch):\ndiff --git a/agents.md b/agents.md\nindex 7d6fea5791f7c95677e17e8975a14df83f998fd6..1dc989e4b23071f2eef69f2479c9a1ca2bd04b32 100644\n--- a/agents.md\n+++ b/agents.md\n@@ -40,6 +40,8 @@ Strict **CSP** that blocks `eval` would break the current app. Other projects ma\n \n - **Non-morph `POST /ui` responses:** **`SetGardenPin`** returns **`303 See Other`** and **`Set-Cookie`** (same as **`POST /theme`**). Garden pin/unpin is a normal **`<form method=\"POST\" action=\"/ui\" data-navigate=\"full\">`** — browser navigation applies cookies reliably (see **`test/browser_garden_pin.clj`**). Each **`__rpc__`** payload includes **`form_action: \"/ui\"`**; **`post_ui_html`** rejects mismatches to bind tokens to the UI endpoint.\n \n+- **`CopyGardenRank`:** Browser copy control on garden ranking headings. Returns **`text/javascript`** via **`JsBuilder::clipboard_write_text_and_label_btn`** (same **`fetch` → `eval`** loop as **`CopyThread`**). Payload includes **`room`**, **`parent_path`**, **`depth`**, **`copy_btn_id`**, and optional **`external_hosts`** (for **`/-/`** host-root indexes). Clipboard text is a concise markdown numbered list of display paths (plus unranked bullets).\n+\n - **`VoteComparePost`:** On success returns **`text/javascript`** that **morphs** **`#vote-edge-history-region`** (recomputed **`<ul>`** — ratios match **`left`/`right`** query order, bullets, sorted by strength toward **`left`** then newer) and **`.vote-compare-nav`** (fresh next-pair link). The compare **`GET`** page uses **`layout_full_bleed_chromeless`** (no breadcrumbs, no **`#controls`**, no **`slug-pin-hud`**; **`view-vote-compare-fullscreen`** full-width **`body`**). **`__rpc__`** carries **`form_action: \"/ui\"`**; **`thread_tag`** and ratio fields come from the same form as **`$form`** holes. **Guests** on a shared pair see the compose UI with **`post vote`** as a link to **`/login?next=<pair path>`** (class **`vote-compare-login-cta`**); after OAuth / username selection they return to that matchup. An unauthenticated **`VoteComparePost`** (forged/stale form) still JS-redirects to the same **`/login?next=`** target.\n \n - **`ThreadGraduate` / `GraduateThread`:** Private-room forum threads with **Manage** can be published to the public site under the same tag. The writer replays non-redacted ingests into **`room: public`** (chronological order), then appends a durable **`ThreadGraduated`** marker. Graduated private threads show a banner linking to public **`/t/:tag`**, block further private posts, and cannot be graduated twice. CLI: **`npx slugsocial private <room> forum graduate <tag>`**; RPC: **`ThreadGraduate`**.\ndiff --git a/server/src/api/ui_html.rs b/server/src/api/ui_html.rs\nindex b4a0c9e87e462050bd52728e49e0d6781bf1cfc8..611956d0a46062b49ce350be176e4be139312ff0 100644\n--- a/server/src/api/ui_html.rs\n+++ b/server/src/api/ui_html.rs\n@@ -24,9 +24,9 @@ use crate::{\n         external_resolver_status_markup, fragment_new_thread_slot, login_to_post_hint_markup,\n         parse_html_ui_from_form, room_members_section_markup, thread_feed_html,\n         thread_feed_html_for_room, thread_feed_region_markup, thread_ui_collapse_redacted_post,\n-        thread_ui_copy_thread,\n-        thread_ui_expand_post_full, thread_ui_expand_redacted_post, ui_js_warn, user_can_post_room,\n-        user_can_view_room, HtmlUiAction, JsBuilder, ThreadNav,\n+        garden_ui_copy_rank, thread_ui_copy_thread, thread_ui_expand_post_full,\n+        thread_ui_expand_redacted_post, ui_js_warn, user_can_post_room, user_can_view_room,\n+        HtmlUiAction, JsBuilder, ThreadNav,\n     },\n     reducer::{scope_from_room_wire, ScopeId},\n     state::AppState,\n@@ -575,6 +575,25 @@ async fn dispatch_ui_action(\n             let viewer = session.map(|s| s.username.as_str());\n             thread_ui_copy_thread(state, &room, &thread_tag, &copy_btn_id, viewer).await\n         }\n+        HtmlUiAction::CopyGardenRank {\n+            room,\n+            parent_path,\n+            depth,\n+            copy_btn_id,\n+            external_hosts,\n+        } => {\n+            let viewer = session.map(|s| s.username.as_str());\n+            garden_ui_copy_rank(\n+                state,\n+                &room,\n+                &parent_path,\n+                depth,\n+                &copy_btn_id,\n+                external_hosts,\n+                viewer,\n+            )\n+            .await\n+        }\n         HtmlUiAction::GraduateThread { room, thread_tag } => {\n             let Some(session) = session else {\n                 return js_redirect(\"/login\").into_response();\ndiff --git a/server/src/html/garden/copy.rs b/server/src/html/garden/copy.rs\nnew file mode 100644\nindex 0000000000000000000000000000000000000000..271ea87c34c99e23ab1b0d8572632fdc41380b78\n--- /dev/null\n+++ b/server/src/html/garden/copy.rs\n@@ -0,0 +1,199 @@\n+//! Copy garden rankings to the clipboard as concise markdown (POST /ui + JsBuilder eval).\n+\n+use crate::form_template::template_json_compact;\n+use crate::html::forum::ThreadNav;\n+use crate::html::js_string_literal;\n+use crate::html::ui_action::HtmlUiAction;\n+use crate::html::{JsBuilder, ui_js_warn};\n+use crate::path_types::ItemId;\n+use crate::reducer::scope_from_room_wire;\n+use crate::scope_rank::{\n+    build_children_rankings, build_rankings_for_item_set, external_root_host_items,\n+    resolve_scope_recursive, ChildrenRankings,\n+};\n+use crate::state::AppState;\n+use maud::{html, Markup};\n+\n+use super::access::user_can_view_room;\n+use super::item::item_display_path;\n+use crate::reducer::{ContentState, ScopeId};\n+\n+const COPY_BTN_ID: &str = \"garden-rank-copy\";\n+\n+/// `POST /ui` + `__rpc__` from an inline button; response body is `eval`'d (same as forum copy).\n+fn garden_ui_fetch_onclick(rpc_compact_json: &str) -> String {\n+    format!(\n+        \"fetch('/ui',{{method:'POST',headers:{{'Content-Type':'application/x-www-form-urlencoded'}},body:new URLSearchParams({{__rpc__:{}}}).toString(),credentials:'same-origin'}}).then(r=>r.text()).then(eval);return false\",\n+        js_string_literal(rpc_compact_json)\n+    )\n+}\n+\n+/// Concise markdown for ranked child groups (numbered lists + unranked bullets).\n+pub(crate) fn format_garden_rank_markdown(rankings: &ChildrenRankings) -> String {\n+    let mut out = String::new();\n+    let multi = rankings.component_rankings.len() > 1;\n+    for (ci, comp) in rankings.component_rankings.iter().enumerate() {\n+        if ci > 0 {\n+            out.push('\\n');\n+        }\n+        if multi {\n+            out.push_str(&format!(\"### ordering {}\\n\\n\", ci + 1));\n+        }\n+        for (i, r) in comp.ranked.iter().enumerate() {\n+            out.push_str(&format!(\n+                \"{}. {}\\n\",\n+                i + 1,\n+                item_display_path(r.item.as_str())\n+            ));\n+        }\n+    }\n+    if !rankings.unranked_items.is_empty() {\n+        if !out.is_empty() {\n+            out.push('\\n');\n+        }\n+        for name in &rankings.unranked_items {\n+            out.push_str(&format!(\"- {}\\n\", item_display_path(name.as_str())));\n+        }\n+    }\n+    out\n+}\n+\n+fn rankings_for_copy(\n+    state_content: &crate::reducer::ContentState,\n+    parent_path: &str,\n+    depth: usize,\n+    external_hosts: bool,\n+) -> ChildrenRankings {\n+    if external_hosts {\n+        let hosts = external_root_host_items(state_content);\n+        return build_rankings_for_item_set(state_content, &hosts);\n+    }\n+    let parent = ItemId::parse(parent_path.trim())\n+        .unwrap_or_else(|| ItemId::ontology_root())\n+        .normalized_storage();\n+    let depth = depth.clamp(1, 5);\n+    if depth > 1 {\n+        let items = resolve_scope_recursive(state_content, &[parent.as_str().to_string()], depth);\n+        build_rankings_for_item_set(state_content, &items)\n+    } else {\n+        build_children_rankings(state_content, &parent)\n+    }\n+}\n+\n+pub(crate) async fn garden_ui_copy_rank(\n+    state: &AppState,\n+    room: &str,\n+    parent_path: &str,\n+    depth: usize,\n+    copy_btn_id: &str,\n+    external_hosts: bool,\n+    viewer: Option<&str>,\n+) -> axum::response::Response {\n+    let room = room.trim();\n+    let scope = scope_from_room_wire(room);\n+    if let ScopeId::Room(ref rid) = scope {\n+        let reduced = state.reduced.read().await;\n+        if !user_can_view_room(&reduced, rid, viewer) {\n+            return ui_js_warn(\"forbidden\");\n+        }\n+    }\n+\n+    let reduced = state.reduced.read().await;\n+    let empty = ContentState::default();\n+    let content = match &scope {\n+        ScopeId::Public => reduced.public(),\n+        ScopeId::Room(_) => reduced.content_for_scope(&scope).unwrap_or(&empty),\n+    };\n+    let rankings = rankings_for_copy(content, parent_path, depth, external_hosts);\n+    let text = format_garden_rank_markdown(&rankings);\n+    drop(reduced);\n+\n+    if text.is_empty() {\n+        return ui_js_warn(\"nothing to copy\");\n+    }\n+\n+    JsBuilder::new()\n+        .clipboard_write_text_and_label_btn(&text, copy_btn_id, \"copied\")\n+        .into_response()\n+}\n+\n+pub(super) fn garden_rank_copy_button_markup(\n+    nav: &ThreadNav,\n+    parent_path: &str,\n+    depth: usize,\n+    external_hosts: bool,\n+) -> Markup {\n+    let rpc = template_json_compact(&HtmlUiAction::CopyGardenRank {\n+        room: nav.room_wire.clone(),\n+        parent_path: parent_path.to_string(),\n+        depth,\n+        copy_btn_id: COPY_BTN_ID.to_string(),\n+        external_hosts,\n+    })\n+    .expect(\"CopyGardenRank serializes\");\n+    html! {\n+        button type=\"button\" id=(COPY_BTN_ID) class=\"post-nav-btn ont-rank-copy-btn\" title=\"Copy ranking as markdown\"\n+            onclick=(garden_ui_fetch_onclick(&rpc)) {\n+            \"copy\"\n+        }\n+    }\n+}\n+\n+#[cfg(test)]\n+mod tests {\n+    use super::*;\n+    use crate::path_types::ItemId;\n+    use crate::ranking::RankedItem;\n+    use crate::scope_rank::ScopedComponent;\n+\n+    #[test]\n+    fn markdown_single_component_and_unranked() {\n+        let rankings = ChildrenRankings {\n+            component_rankings: vec![ScopedComponent {\n+                pairs: 1,\n+                ranked: vec![\n+                    RankedItem {\n+                        item: ItemId::parse(\"~/a\").unwrap(),\n+                        score: 0.9,\n+                    },\n+                    RankedItem {\n+                        item: ItemId::parse(\"~/b\").unwrap(),\n+                        score: 0.1,\n+                    },\n+                ],\n+            }],\n+            unranked_items: vec![ItemId::parse(\"~/c\").unwrap()],\n+        };\n+        assert_eq!(\n+            format_garden_rank_markdown(&rankings),\n+            \"1. ~/a\\n2. ~/b\\n\\n- ~/c\\n\"\n+        );\n+    }\n+\n+    #[test]\n+    fn markdown_multi_component_headers() {\n+        let rankings = ChildrenRankings {\n+            component_rankings: vec![\n+                ScopedComponent {\n+                    pairs: 1,\n+                    ranked: vec![RankedItem {\n+                        item: ItemId::parse(\"~/a\").unwrap(),\n+                        score: 1.0,\n+                    }],\n+                },\n+                ScopedComponent {\n+                    pairs: 1,\n+                    ranked: vec![RankedItem {\n+                        item: ItemId::parse(\"~/b\").unwrap(),\n+                        score: 1.0,\n+                    }],\n+                },\n+            ],\n+            unranked_items: vec![],\n+        };\n+        assert_eq!(\n+            format_garden_rank_markdown(&rankings),\n+            \"### ordering 1\\n\\n1. ~/a\\n\\n### ordering 2\\n\\n1. ~/b\\n\"\n+        );\n+    }\n+}\ndiff --git a/server/src/html/garden/mod.rs b/server/src/html/garden/mod.rs\nindex ee8696727e5473fe1fa913b8a7b9f3cb9c32d12f..69012a2c1d069e47fa611d63d3bd2a329fd6255d 100644\n--- a/server/src/html/garden/mod.rs\n+++ b/server/src/html/garden/mod.rs\n@@ -2,6 +2,7 @@\n \n mod access;\n mod browse;\n+mod copy;\n mod external;\n mod item;\n mod item_page;\n@@ -13,6 +14,7 @@ mod vote;\n #[cfg(test)]\n mod tests;\n \n+pub(crate) use copy::garden_ui_copy_rank;\n pub(crate) use external::external_resolver_status_markup;\n pub(crate) use pin::{encode_pin_cookie_value, GARDEN_PIN_COOKIE};\n pub(crate) use vote::vote_compare_post_success_js;\ndiff --git a/server/src/html/garden/render.rs b/server/src/html/garden/render.rs\nindex ca546693ecb2bb9ae5fb370f02b860c943f604b9..eed80e807d77e6b4eeeb0c3f38d6372e91ad2852 100644\n--- a/server/src/html/garden/render.rs\n+++ b/server/src/html/garden/render.rs\n@@ -25,6 +25,7 @@ use crate::{\n use super::{\n     access::content_for_garden_view,\n     browse::{garden_layout_meta, scoped_bc_path_for, GardenBrowsePath},\n+    copy::garden_rank_copy_button_markup,\n     external::{external_frame_allowed, external_source_href, github_resolver_controls},\n     item::{child_depth_from_uri, item_code_label, item_display_path, item_href},\n     item_page::{build_item_page_view_model, sibling_nav_markup},\n@@ -196,6 +197,15 @@ pub(super) async fn render_scope_view(\n                         \" \"\n                         span class=\"muted\" { (format!(\"(depth {})\", model.child_depth)) }\n                     }\n+                    @if total_children > 0 {\n+                        \" \"\n+                        (garden_rank_copy_button_markup(\n+                            &nav,\n+                            &item_display_path(&model.item),\n+                            model.child_depth,\n+                            false,\n+                        ))\n+                    }\n                     @if total_children >= 2 {\n                         \" \"\n                         a class=\"ont-vote-children-btn\" href=(vote_pool_href(&nav, &model.item)) {\ndiff --git a/server/src/html/garden/routes.rs b/server/src/html/garden/routes.rs\nindex 8a0499576d9093dbac0fffa1cf2ed88187e14acb..31b61355b1ec75645d405e16ab6abf8205c66380 100644\n--- a/server/src/html/garden/routes.rs\n+++ b/server/src/html/garden/routes.rs\n@@ -28,6 +28,7 @@ use crate::{\n use super::{\n     access::{content_for_garden_view, room_not_found_page, room_scope_has_garden_content, user_can_view_room},\n     browse::{GardenBrowsePath, scoped_bc_path_external},\n+    copy::garden_rank_copy_button_markup,\n     item::{item_display_path, item_href},\n     render::render_scope_view,\n };\n@@ -52,7 +53,13 @@ pub async fn garden_index(\n         html! {\n             @let root_path = OntologyPath::root();\n             nav class=\"breadcrumb\" { (bc_path(&root_path)) }\n-            h2 { \"paths\" }\n+            h2 {\n+                \"paths\"\n+                @if !(child_rankings.component_rankings.is_empty() && child_rankings.unranked_items.is_empty()) {\n+                    \" \"\n+                    (garden_rank_copy_button_markup(&nav, \"~/\", 1, false))\n+                }\n+            }\n             @if child_rankings.component_rankings.is_empty() && child_rankings.unranked_items.is_empty() {\n                 p class=\"muted\" { \"no items yet\" }\n             } @else {\n@@ -137,7 +144,13 @@ pub async fn external_garden_index(\n         \"view-ontology view-ontology-light\",\n         html! {\n             nav class=\"breadcrumb\" { (bc_path_external(&ext_path)) }\n-            h2 { \"external paths\" }\n+            h2 {\n+                \"external paths\"\n+                @if !(child_rankings.component_rankings.is_empty() && child_rankings.unranked_items.is_empty()) {\n+                    \" \"\n+                    (garden_rank_copy_button_markup(&nav, \"\", 1, true))\n+                }\n+            }\n             p class=\"muted\" { \"Items outside slug.social use the \" code { \"-/\" } \" prefix followed by the full \" code { \"https://…\" } \" URL (legacy \" code { \"-/host/path\" } \" still works).\" }\n             @if child_rankings.component_rankings.is_empty() && child_rankings.unranked_items.is_empty() {\n                 p class=\"muted\" { \"no external items indexed yet\" }\n@@ -272,7 +285,13 @@ pub async fn room_external_garden_index(\n         \"view-ontology view-ontology-light\",\n         html! {\n             nav class=\"breadcrumb\" { (scoped_bc_path_external(&ext_path, &nav)) }\n-            h2 { \"external paths\" }\n+            h2 {\n+                \"external paths\"\n+                @if !(child_rankings.component_rankings.is_empty() && child_rankings.unranked_items.is_empty()) {\n+                    \" \"\n+                    (garden_rank_copy_button_markup(&nav, \"\", 1, true))\n+                }\n+            }\n             @if child_rankings.component_rankings.is_empty() && child_rankings.unranked_items.is_empty() {\n                 p class=\"muted\" { \"no external items indexed yet\" }\n             } @else {\ndiff --git a/server/src/html/mod.rs b/server/src/html/mod.rs\nindex d7014fc7f934e5b0c7fb47ebf00cb4ef50d306c2..645d54f2e117ba901e02ed958ada6ff69a78ae34 100644\n--- a/server/src/html/mod.rs\n+++ b/server/src/html/mod.rs\n@@ -37,8 +37,8 @@ pub(crate) use forum::{\n     user_can_post_room, user_can_view_room,\n };\n pub(crate) use garden::{\n-    encode_pin_cookie_value, external_resolver_status_markup, vote_compare_post_success_js,\n-    GARDEN_PIN_COOKIE,\n+    encode_pin_cookie_value, external_resolver_status_markup, garden_ui_copy_rank,\n+    vote_compare_post_success_js, GARDEN_PIN_COOKIE,\n };\n pub use garden::{\n     external_garden_index, external_ontology_path, garden_index, ontology_path,\ndiff --git a/server/src/html/ui_action.rs b/server/src/html/ui_action.rs\nindex 5cf3168fb74e7654215cd9ff8942c6ed63fd0002..7dc3db062954370b5504fc311c0ab24bab569f80 100644\n--- a/server/src/html/ui_action.rs\n+++ b/server/src/html/ui_action.rs\n@@ -118,6 +118,18 @@ pub enum HtmlUiAction {\n         thread_tag: String,\n         copy_btn_id: String,\n     },\n+    /// Copy garden child ranking as a concise markdown list to the clipboard.\n+    CopyGardenRank {\n+        room: String,\n+        /// Parent item path (storage or display). Ignored when `external_hosts` is true.\n+        parent_path: String,\n+        #[serde(default = \"default_garden_rank_depth\")]\n+        depth: usize,\n+        copy_btn_id: String,\n+        /// When true, copy rankings for external host roots (`/-/` index), not parent children.\n+        #[serde(default)]\n+        external_hosts: bool,\n+    },\n     /// Publish a private-room thread to the public forum (Manage only).\n     GraduateThread {\n         room: String,\n@@ -125,6 +137,10 @@ pub enum HtmlUiAction {\n     },\n }\n \n+fn default_garden_rank_depth() -> usize {\n+    1\n+}\n+\n #[derive(Debug, Error)]\n pub enum HtmlUiParseError {\n     #[error(\"missing __rpc__ field\")]\n@@ -272,4 +288,57 @@ mod tests {\n             }\n         );\n     }\n+\n+    #[test]\n+    fn copy_garden_rank_round_trip() {\n+        let template = serde_json::json!({\n+            \"action\": \"copy_garden_rank\",\n+            \"room\": \"public\",\n+            \"parent_path\": \"~/topic\",\n+            \"depth\": 2,\n+            \"copy_btn_id\": \"garden-rank-copy\",\n+        });\n+        let mut form = HashMap::new();\n+        form.insert(\n+            UI_RPC_FIELD.to_string(),\n+            serde_json::to_string(&template).unwrap(),\n+        );\n+        let a = parse_html_ui_from_form(&form).unwrap();\n+        assert_eq!(\n+            a,\n+            HtmlUiAction::CopyGardenRank {\n+                room: \"public\".into(),\n+                parent_path: \"~/topic\".into(),\n+                depth: 2,\n+                copy_btn_id: \"garden-rank-copy\".into(),\n+                external_hosts: false,\n+            }\n+        );\n+    }\n+\n+    #[test]\n+    fn copy_garden_rank_defaults_depth_and_external_hosts() {\n+        let template = serde_json::json!({\n+            \"action\": \"copy_garden_rank\",\n+            \"room\": \"public\",\n+            \"parent_path\": \"~/\",\n+            \"copy_btn_id\": \"garden-rank-copy\",\n+        });\n+        let mut form = HashMap::new();\n+        form.insert(\n+            UI_RPC_FIELD.to_string(),\n+            serde_json::to_string(&template).unwrap(),\n+        );\n+        let a = parse_html_ui_from_form(&form).unwrap();\n+        assert_eq!(\n+            a,\n+            HtmlUiAction::CopyGardenRank {\n+                room: \"public\".into(),\n+                parent_path: \"~/\".into(),\n+                depth: 1,\n+                copy_btn_id: \"garden-rank-copy\".into(),\n+                external_hosts: false,\n+            }\n+        );\n+    }\n }\ndiff --git a/server/tests/integration_ui.rs b/server/tests/integration_ui.rs\nindex d242abff5769cc704b3c8070d7456e5788c31a45..6b1475b773106a2dd3f326475c9fb4cc727f6b4b 100644\n--- a/server/tests/integration_ui.rs\n+++ b/server/tests/integration_ui.rs\n@@ -490,3 +490,71 @@ async fn test_vote_compare_post_rejects_over_max_ratio() {\n     );\n }\n \n+#[tokio::test]\n+async fn test_copy_garden_rank_returns_clipboard_js_with_markdown() {\n+    let (addr, _tmp, _log, _handle) = create_test_server().await;\n+    let client = reqwest::Client::new();\n+    let bearer = test_bearer();\n+\n+    let seed = rpc_batch(\n+        &client,\n+        addr,\n+        Some(&bearer),\n+        serde_json::json!([{\n+            \"Post\": {\n+                \"room\": \"public\",\n+                \"thread_tag\": \"copy-rank-ui\",\n+                \"text\": \"# copy-rank-ui\\n\\n~/copy-a {a}\\n~/copy-b {b}\\n~/copy-c {c}\\n{vote}\\n~/copy-a 2:1 ~/copy-b\\n\",\n+                \"return_rank_diff\": false\n+            }\n+        }]),\n+    )\n+    .await;\n+    assert_eq!(seed[\"results\"][0][\"ok\"], true, \"seed: {:?}\", seed);\n+\n+    let page = client\n+        .get(format!(\"http://{addr}/~\"))\n+        .send()\n+        .await\n+        .unwrap();\n+    assert!(page.status().is_success());\n+    let html = page.text().await.unwrap();\n+    assert!(\n+        html.contains(\"id=\\\"garden-rank-copy\\\"\") && html.contains(\"copy_garden_rank\"),\n+        \"garden index should include copy button + action payload\"\n+    );\n+\n+    let rpc = serde_json::json!({\n+        \"action\": \"copy_garden_rank\",\n+        \"room\": \"public\",\n+        \"parent_path\": \"~/\",\n+        \"depth\": 1,\n+        \"copy_btn_id\": \"garden-rank-copy\",\n+    })\n+    .to_string();\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+    assert_eq!(\n+        resp.headers()\n+            .get(reqwest::header::CONTENT_TYPE)\n+            .and_then(|v| v.to_str().ok()),\n+        Some(\"text/javascript; charset=utf-8\")\n+    );\n+    let js = resp.text().await.unwrap();\n+    assert!(\n+        js.contains(\"navigator.clipboard.writeText\") && js.contains(\"garden-rank-copy\"),\n+        \"expected clipboard JsBuilder snippet, got: {js}\"\n+    );\n+    assert!(\n+        js.contains(\"1. ~/copy-a\") && js.contains(\"2. ~/copy-b\") && js.contains(\"- ~/copy-c\"),\n+        \"expected concise markdown ranking in clipboard payload, got: {js}\"\n+    );\n+    assert!(js.contains(\"\\\"copied\\\"\"), \"expected button label flip to copied\");\n+}\n+\ndiff --git a/test/browser_public_garden.clj b/test/browser_public_garden.clj\nindex 5dd49f1f70c870e25a2a9f5348f0bdb85647e897..8ceb532c664f9fc3d6f66a451e5ea5eaa1671007 100644\n--- a/test/browser_public_garden.clj\n+++ b/test/browser_public_garden.clj\n@@ -73,6 +73,7 @@\n        (core/with-playwright [pw]\n          (core/with-browser [browser (core/launch-chromium pw {:headless true :channel \"chrome\"})]\n            (core/with-context [ctx (core/new-context browser)]\n+             (core/context-grant-permissions! ctx [\"clipboard-read\" \"clipboard-write\"])\n              (core/with-page [pg (core/new-page-from-context ctx)]\n                (page/navigate pg (str base-url \"/login\"))\n                (is (wait-for-text pg \"body\" \"@alice\" 15000) \"alice session after login\")\n@@ -84,7 +85,12 @@\n                (is (wait-for-text pg \"body\" \"~/br-pub-b\" 10000) \"ranked list shows ~/br-pub-b\")\n                (is (wait-for-text pg \"body\" \"unranked\" 10000) \"unranked section present\")\n                (is (wait-for-text pg \"body\" \"~/br-pub-c\" 10000)\n-                   \"unranked list shows ~/br-pub-c\"))))))\n+                   \"unranked list shows ~/br-pub-c\")\n+               (is (wait-for-text pg \"#garden-rank-copy\" \"copy\" 5000)\n+                   \"garden ranking copy button visible\")\n+               (locator/click (page/locator pg \"#garden-rank-copy\"))\n+               (is (wait-for-text pg \"#garden-rank-copy\" \"copied\" 10000)\n+                   \"copy button flips to copied after POST /ui eval\"))))))\n \n      (finally\n        (when-some [s @!server] (common/kill-server s))\n","role":"user"}],"model":"~x-ai/grok-latest"}