feat(web): wire pl_editor + symbol_editor tools (open, wizard-skip, UI)

Add the two newly WASM-ported editors to the web app the same way as the
existing tools:

- pl_editor (drawing-sheet, .kicad_wks): PL_EDITOR_FRAME overrides
  OpenProjectFiles, so it gets the generic kicadOpenFile embind hook
  (wasm/bindings/pl_editor_embind.cpp) for deterministic open. Mapped
  .kicad_wks -> pl_editor in EXTENSION_TOOL.
- symbol_editor (symbol library): SYMBOL_EDIT_FRAME does NOT override
  OpenProjectFiles, so it's treated as file-less (boot standalone, opens
  libraries via its own UI). Added to FILELESS_TOOLS.

Both boot through single_top.cpp's STARTWIZARD, so both seed config to skip the
first-run wizard (TOOL_NEEDS_CONFIG_SEED) and get a /usr/bin/<binary> argv0.

contract: add to TOOLS, plus a TOOL_LABELS map for friendly names. The project
UI now renders file-less launch links generically from FILELESS_TOOLS and
per-file "Open in <label>" links from EXTENSION_TOOL (auto file-type detection),
so adding a tool needs no UI edits.

Verified in-browser: pl_editor opens a .kicad_wks (renders the sheet),
symbol_editor boots wizard-free; both with 0 console errors.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

wasm/bindings/pl_editor_embind.cpp

@@ -0,0 +1,44 @@
+/*
+ * Embind bindings for KiCad pl_editor (drawing-sheet / page-layout editor) WASM.
+ *
+ * Picked up automatically by scripts/kicad/build-kicad-target.sh when building
+ * the pl_editor app (it compiles wasm/bindings/<app>_embind.cpp if present).
+ */
+
+#ifdef __EMSCRIPTEN__
+#include <emscripten/bind.h>
+#include <kiway_player.h>
+#include <kiway.h>
+#include <vector>
+#include <wx/app.h>
+#include <wx/string.h>
+#include <wx/window.h>
+
+using namespace emscripten;
+
+// Programmatically open a drawing-sheet file (.kicad_wks) in the running editor
+// frame, without UI automation. Mirrors single_top.cpp's MacOpenFile path: the
+// editor frame is the app's top window and is a KIWAY_PLAYER (PL_EDITOR_FRAME
+// overrides OpenProjectFiles). Returns the result of OpenProjectFiles, or false
+// if no frame is available — letting the JS caller fall back to driving
+// File→Open.
+bool kicadOpenFile( std::string path )
+{
+    KIWAY_PLAYER* frame =
+            wxTheApp ? static_cast<KIWAY_PLAYER*>( wxTheApp->GetTopWindow() ) : nullptr;
+
+    if( !frame )
+        return false;
+
+    if( wxWindow* blocking = frame->Kiway().GetBlockingDialog() )
+        blocking->Close( true );
+
+    return frame->OpenProjectFiles(
+            std::vector<wxString>( 1, wxString::FromUTF8( path.c_str() ) ) );
+}
+
+EMSCRIPTEN_BINDINGS(pl_editor) {
+    // Programmatic file open (preferred over UI automation from the web app).
+    function("kicadOpenFile", &kicadOpenFile);
+}
+#endif

web/apps/frontend/src/pages/ProjectDetailPage.tsx

@@ -1,5 +1,10 @@
 import { Link, useParams } from "react-router-dom";
-import { EXTENSION_TOOL, type Tool } from "@kicad-web/contract";
+import {
+  EXTENSION_TOOL,
+  FILELESS_TOOLS,
+  TOOL_LABELS,
+  type Tool,
+} from "@kicad-web/contract";
 import { ArrowLeft, ExternalLink, Loader2 } from "lucide-react";
 import { useProject } from "@/lib/api";
 import { formatBytes } from "@/lib/utils";
@@ -44,13 +49,17 @@ export function ProjectDetailPage() {
           </div>
 
           <div className="mb-6 flex flex-wrap gap-3">
-            {/* Full reload (anchor) so Emscripten boots into a clean page. */}
-            <a
-              className="text-sm underline underline-offset-4"
-              href={`/p/${slug}/calculator/`}
-            >
-              Open PCB Calculator
-            </a>
+            {/* Standalone (file-less) tools — launched without a target file.
+                Full reload (anchor) so Emscripten boots into a clean page. */}
+            {[...FILELESS_TOOLS].map((tool) => (
+              <a
+                key={tool}
+                className="text-sm underline underline-offset-4"
+                href={`/p/${slug}/${tool}/`}
+              >
+                Open {TOOL_LABELS[tool]}
+              </a>
+            ))}
           </div>
 
           <div className="mb-8">
@@ -79,7 +88,7 @@ export function ProjectDetailPage() {
                       className="inline-flex shrink-0 items-center gap-1 rounded-md border px-3 py-1.5 text-sm hover:bg-accent"
                       href={`/p/${slug}/${tool}/${f.path}`}
                     >
-                      <ExternalLink size={14} /> Open in {tool}
+                      <ExternalLink size={14} /> Open in {TOOL_LABELS[tool]}
                     </a>
                   )}
                 </div>

web/apps/frontend/src/wasm/constants.ts

@@ -24,6 +24,8 @@ export const TOOL_ARGV0: Record<Tool, string> = {
   pcbnew: "/usr/bin/pcbnew",
   eeschema: "/usr/bin/eeschema",
   calculator: "/usr/bin/pcb_calculator",
+  pl_editor: "/usr/bin/pl_editor",
+  symbol_editor: "/usr/bin/symbol_editor",
 };
 
 /**
@@ -39,6 +41,8 @@ export const TOOL_NEEDS_CONFIG_SEED: Record<Tool, boolean> = {
   pcbnew: true,
   eeschema: true,
   calculator: true,
+  pl_editor: true,
+  symbol_editor: true,
 };
 
 /** KiCad user settings dir for this build (PATHS::GetUserSettingsPath()). */

web/packages/contract/src/schemas.ts

@@ -1,18 +1,41 @@
 import { z } from "zod";
 
 /** WASM tools that can be selected by the `:tool` URL segment. */
-export const TOOLS = ["pcbnew", "eeschema", "calculator"] as const;
+export const TOOLS = [
+  "pcbnew",
+  "eeschema",
+  "calculator",
+  "pl_editor",
+  "symbol_editor",
+] as const;
 export const toolSchema = z.enum(TOOLS);
 export type Tool = z.infer<typeof toolSchema>;
 
+/** Human-readable labels for tools (UI links, status text). */
+export const TOOL_LABELS: Record<Tool, string> = {
+  pcbnew: "PCB Editor",
+  eeschema: "Schematic Editor",
+  calculator: "PCB Calculator",
+  pl_editor: "Drawing Sheet Editor",
+  symbol_editor: "Symbol Editor",
+};
+
 /** Default file-extension → tool mapping (the explicit URL segment always wins). */
 export const EXTENSION_TOOL: Record<string, Tool> = {
   ".kicad_pcb": "pcbnew",
   ".kicad_sch": "eeschema",
+  ".kicad_wks": "pl_editor",
 };
 
-/** Tools that do not take a file (booted standalone). */
-export const FILELESS_TOOLS: ReadonlySet<Tool> = new Set<Tool>(["calculator"]);
+/**
+ * Tools that do not take a file (booted standalone). The calculator has no file
+ * concept; the symbol editor opens libraries through its own UI (its frame does
+ * not implement OpenProjectFiles), so we boot it standalone rather than auto-open.
+ */
+export const FILELESS_TOOLS: ReadonlySet<Tool> = new Set<Tool>([
+  "calculator",
+  "symbol_editor",
+]);
 
 export const projectSlugSchema = z
   .string()