feat: add CopyButton component and copy-to-clipboard across dashboard

New reusable CopyButton component with checkmark feedback after copy.

Added copy buttons to:
- SSH public key display (add repo modal)
- Webhook URL field (edit repo modal)
- Webhook secret field (edit repo modal)
- Code snippets in finding detail (via enhanced CodeSnippet component)
- Suggested fix code blocks
- MCP server endpoint URLs

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

compliance-dashboard/assets/main.css

@@ -3877,3 +3877,15 @@ tbody tr:last-child td {
 .notification-item-pkg { font-size: 12px; color: var(--text-primary); font-family: 'JetBrains Mono', monospace; }
 .notification-item-repo { font-size: 11px; color: var(--text-secondary); margin-bottom: 4px; }
 .notification-item-summary { font-size: 11px; color: var(--text-secondary); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
+
+/* ═══════════════════════════════════════════════════════════════
+   COPY BUTTON — Reusable clipboard copy component
+   ═══════════════════════════════════════════════════════════════ */
+.copy-btn { background: none; border: 1px solid var(--border); border-radius: 6px; padding: 5px 7px; color: var(--text-secondary); cursor: pointer; display: inline-flex; align-items: center; transition: color 0.15s, border-color 0.15s, background 0.15s; flex-shrink: 0; }
+.copy-btn:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-muted); }
+.copy-btn-sm { padding: 3px 5px; border-radius: 4px; }
+/* Copyable inline field pattern: value + copy button side by side */
+.copyable { display: flex; align-items: center; gap: 6px; }
+.copyable code, .copyable .mono { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.code-snippet-wrapper { position: relative; }
+.code-snippet-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 4px; gap: 8px; }

compliance-dashboard/src/components/code_snippet.rs

@@ -1,5 +1,7 @@
 use dioxus::prelude::*;
 
+use crate::components::copy_button::CopyButton;
+
 #[component]
 pub fn CodeSnippet(
     code: String,
@@ -7,15 +9,18 @@ pub fn CodeSnippet(
     #[props(default)] line_number: u32,
 ) -> Element {
     rsx! {
-        div {
-            if !file_path.is_empty() {
-                div {
-                    style: "font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; font-family: monospace;",
-                    "{file_path}"
-                    if line_number > 0 {
-                        ":{line_number}"
+        div { class: "code-snippet-wrapper",
+            div { class: "code-snippet-header",
+                if !file_path.is_empty() {
+                    span {
+                        style: "font-size: 12px; color: var(--text-secondary); font-family: monospace;",
+                        "{file_path}"
+                        if line_number > 0 {
+                            ":{line_number}"
+                        }
                     }
                 }
+                CopyButton { value: code.clone(), small: true }
             }
             pre { class: "code-block", "{code}" }
         }

compliance-dashboard/src/components/copy_button.rs

@@ -0,0 +1,45 @@
+use dioxus::prelude::*;
+use dioxus_free_icons::icons::bs_icons::*;
+use dioxus_free_icons::Icon;
+
+/// A small copy-to-clipboard button that shows a checkmark after copying.
+///
+/// Usage: `CopyButton { value: "text to copy" }`
+#[component]
+pub fn CopyButton(value: String, #[props(default = false)] small: bool) -> Element {
+    let mut copied = use_signal(|| false);
+
+    let size = if small { 12 } else { 14 };
+    let class = if small {
+        "copy-btn copy-btn-sm"
+    } else {
+        "copy-btn"
+    };
+
+    rsx! {
+        button {
+            class: class,
+            title: if copied() { "Copied!" } else { "Copy to clipboard" },
+            onclick: move |_| {
+                let val = value.clone();
+                // Escape single quotes for JS
+                let escaped = val.replace('\\', "\\\\").replace('\'', "\\'");
+                let js = format!("navigator.clipboard.writeText('{escaped}')");
+                document::eval(&js);
+                copied.set(true);
+                spawn(async move {
+                    #[cfg(feature = "web")]
+                    gloo_timers::future::TimeoutFuture::new(2000).await;
+                    #[cfg(not(feature = "web"))]
+                    tokio::time::sleep(std::time::Duration::from_secs(2)).await;
+                    copied.set(false);
+                });
+            },
+            if copied() {
+                Icon { icon: BsCheckLg, width: size, height: size }
+            } else {
+                Icon { icon: BsClipboard, width: size, height: size }
+            }
+        }
+    }
+}

compliance-dashboard/src/components/mod.rs

@@ -2,6 +2,7 @@ pub mod app_shell;
 pub mod attack_chain;
 pub mod code_inspector;
 pub mod code_snippet;
+pub mod copy_button;
 pub mod file_tree;
 pub mod help_chat;
 pub mod notification_bell;

compliance-dashboard/src/pages/mcp_servers.rs

@@ -259,7 +259,10 @@ pub fn McpServersPage() -> Element {
                                                 div { class: "mcp-detail-row",
                                                     Icon { icon: BsGlobe, width: 13, height: 13 }
                                                     span { class: "mcp-detail-label", "Endpoint" }
-                                                    code { class: "mcp-detail-value", "{server.endpoint_url}" }
+                                                    div { class: "copyable",
+                                                        code { class: "mcp-detail-value", "{server.endpoint_url}" }
+                                                        crate::components::copy_button::CopyButton { value: server.endpoint_url.clone(), small: true }
+                                                    }
                                                 }
                                                 div { class: "mcp-detail-row",
                                                     Icon { icon: BsHddNetwork, width: 13, height: 13 }

compliance-dashboard/src/pages/repositories.rs

@@ -137,11 +137,18 @@ pub fn RepositoriesPage() -> Element {
                                 "For SSH URLs: add this deploy key (read-only) to your repository"
                             }
                             div {
-                                style: "margin-top: 4px; padding: 8px; background: var(--bg-secondary); border-radius: 4px; font-family: monospace; font-size: 11px; word-break: break-all; user-select: all;",
-                                if ssh_public_key().is_empty() {
-                                    "Loading..."
-                                } else {
-                                    "{ssh_public_key}"
+                                class: "copyable",
+                                style: "margin-top: 4px; padding: 8px; background: var(--bg-secondary); border-radius: 4px;",
+                                code {
+                                    style: "font-size: 11px; word-break: break-all; user-select: all;",
+                                    if ssh_public_key().is_empty() {
+                                        "Loading..."
+                                    } else {
+                                        "{ssh_public_key}"
+                                    }
+                                }
+                                if !ssh_public_key().is_empty() {
+                                    crate::components::copy_button::CopyButton { value: ssh_public_key(), small: true }
                                 }
                             }
                         }
@@ -390,28 +397,37 @@ pub fn RepositoriesPage() -> Element {
                         }
                         div { class: "form-group",
                             label { "Webhook URL" }
-                            input {
-                                r#type: "text",
-                                readonly: true,
-                                style: "font-family: monospace; font-size: 12px;",
-                                value: {
-                                    #[cfg(feature = "web")]
-                                    let origin = web_sys::window()
-                                        .and_then(|w: web_sys::Window| w.location().origin().ok())
-                                        .unwrap_or_default();
-                                    #[cfg(not(feature = "web"))]
-                                    let origin = String::new();
-                                    format!("{origin}/webhook/{}/{eid}", edit_webhook_tracker())
-                                },
+                            {
+                                #[cfg(feature = "web")]
+                                let origin = web_sys::window()
+                                    .and_then(|w: web_sys::Window| w.location().origin().ok())
+                                    .unwrap_or_default();
+                                #[cfg(not(feature = "web"))]
+                                let origin = String::new();
+                                let webhook_url = format!("{origin}/webhook/{}/{eid}", edit_webhook_tracker());
+                                rsx! {
+                                    div { class: "copyable",
+                                        input {
+                                            r#type: "text",
+                                            readonly: true,
+                                            style: "font-family: monospace; font-size: 12px; flex: 1;",
+                                            value: "{webhook_url}",
+                                        }
+                                        crate::components::copy_button::CopyButton { value: webhook_url.clone() }
+                                    }
+                                }
                             }
                         }
                         div { class: "form-group",
                             label { "Webhook Secret" }
-                            input {
-                                r#type: "text",
-                                readonly: true,
-                                style: "font-family: monospace; font-size: 12px;",
-                                value: "{secret}",
+                            div { class: "copyable",
+                                input {
+                                    r#type: "text",
+                                    readonly: true,
+                                    style: "font-family: monospace; font-size: 12px; flex: 1;",
+                                    value: "{secret}",
+                                }
+                                crate::components::copy_button::CopyButton { value: secret.clone() }
                             }
                         }
                     }