fix(export): compliance bundle was 842 MB dashboard mirror

.github/actions/compliance/action.yml

@@ -40,9 +40,23 @@ inputs:
     default: 'dark'
 
   offline:
-    description: 'When true, uses system fonts instead of loading Google Fonts. For air-gapped environments.'
+    description: 'When true, uses system fonts instead of loading Google Fonts. For air-gapped environments. Defaults to true for compliance reports — auditors typically open the bundle disconnected.'
     required: false
-    default: 'false'
+    default: 'true'
+
+  single-page:
+    description: >
+      When true, emits a single self-contained `index.html` (typically
+      1-5 MB) with all sections inline — index / requirements / documents
+      / STPA / EU AI Act / coverage / matrix / validation / graph. This
+      is the audit-bundle shape: one file, no per-page navigation, no
+      external resources, browser-openable offline.
+
+      When false, emits the full multi-page dashboard mirror (hundreds
+      of pages, ~100s of MB). Useful for browseable hosted docs but
+      oversized for an audit deliverable.
+    required: false
+    default: 'true'
 
   # ── Rivet tool ─────────────────────────────────────────────────────
   rivet-version:
@@ -170,6 +184,7 @@ runs:
         REPORT_HOMEPAGE: ${{ inputs.homepage }}
         REPORT_VERSIONS: ${{ inputs.other-versions }}
         REPORT_OFFLINE: ${{ inputs.offline }}
+        REPORT_SINGLE_PAGE: ${{ inputs.single-page }}
       run: |
         ARGS="--format html --output ${REPORT_OUTPUT}"
         ARGS="$ARGS --theme ${REPORT_THEME}"
@@ -187,6 +202,10 @@ runs:
           ARGS="$ARGS --offline"
         fi
 
+        if [ "$REPORT_SINGLE_PAGE" = "true" ]; then
+          ARGS="$ARGS --single-page"
+        fi
+
         eval rivet export $ARGS
         echo "report-dir=${REPORT_OUTPUT}" >> "$GITHUB_OUTPUT"
 

rivet-cli/src/main.rs

@@ -6573,9 +6573,9 @@ fn cmd_export_gherkin(
 fn cmd_export_html(
     cli: &Cli,
     output: Option<&std::path::Path>,
-    _single_page: bool,
-    _theme: &str,
-    _offline: bool,
+    single_page: bool,
+    theme: &str,
+    offline: bool,
     _homepage: Option<&str>,
     _version_label: Option<&str>,
     _versions_json: Option<&str>,
@@ -6593,6 +6593,51 @@ fn cmd_export_html(
     let state = serve::reload_state(&project_path, &schemas_dir, 0)
         .context("loading project for export")?;
 
+    // ── Single-page mode (audit-bundle shape) ────────────────────────
+    //
+    // The multi-page export below mirrors the `rivet serve` dashboard
+    // (~800 pages, ~800 MB) which is useful for browsing but not for an
+    // audit bundle. `--single-page` short-circuits to the dedicated
+    // single-page renderer in `rivet_core::export::render_single_page`:
+    // one self-contained `index.html` with the index / requirements /
+    // documents / STPA / EU-AI-Act / coverage / matrix / validation /
+    // graph sections inline, ~3-5 MB total. This is the path the
+    // `.github/actions/compliance` action calls; the CLI previously
+    // ignored the flag (the parameters were `_`-prefixed).
+    if single_page {
+        let config = rivet_core::export::ExportConfig {
+            theme: match theme {
+                "light" => rivet_core::export::ExportTheme::Light,
+                _ => rivet_core::export::ExportTheme::Dark,
+            },
+            offline,
+        };
+        let project_name = state.context.project_name.clone();
+        let version = env!("CARGO_PKG_VERSION").to_string();
+        let html = rivet_core::export::render_single_page(
+            &state.store,
+            &state.schema,
+            &state.graph,
+            &state.cached_diagnostics,
+            &project_name,
+            &version,
+            &config,
+            &state.doc_store,
+        );
+        let out_dir = output.unwrap_or(std::path::Path::new("dist"));
+        std::fs::create_dir_all(out_dir)
+            .with_context(|| format!("creating {}", out_dir.display()))?;
+        let out_file = out_dir.join("index.html");
+        std::fs::write(&out_file, &html)
+            .with_context(|| format!("writing {}", out_file.display()))?;
+        println!(
+            "Exported single-page HTML ({} bytes) to {}",
+            html.len(),
+            out_file.display(),
+        );
+        return Ok(true);
+    }
+
     // Auto-detect baseline snapshot for delta rendering.
     let snap_dir = project_path.join("snapshots");
     let baseline_snapshot = find_latest_snapshot(&snap_dir)

rivet-core/src/export.rs

@@ -1871,8 +1871,12 @@ fn render_section_graph(store: &Store, link_graph: &LinkGraph) -> String {
                 .get(n.as_str())
                 .map(|a| a.title.clone())
                 .unwrap_or_default();
-            let sublabel = if title.len() > 28 {
-                Some(format!("{}...", &title[..26]))
+            let sublabel = if title.chars().count() > 28 {
+                // Truncate by chars, not bytes — `&title[..26]` panics when
+                // byte 26 falls inside a multi-byte UTF-8 character (e.g.
+                // the em-dash `—`, 3 bytes). Take 26 chars and append `…`.
+                let truncated: String = title.chars().take(26).collect();
+                Some(format!("{truncated}…"))
             } else if title.is_empty() {
                 None
             } else {