Emdash source with visual editor image upload fix

Fixes:
1. media.ts: wrap placeholder generation in try-catch
2. toolbar.ts: check r.ok, display error message in popover

packages/core/tsdown.config.ts

@@ -0,0 +1,95 @@
+import { execSync } from "node:child_process";
+import { readFileSync } from "node:fs";
+
+import { defineConfig } from "tsdown";
+
+function readPackageVersion(): string {
+	const parsed: unknown = JSON.parse(readFileSync("package.json", "utf-8"));
+	if (
+		typeof parsed === "object" &&
+		parsed !== null &&
+		"version" in parsed &&
+		typeof parsed.version === "string"
+	) {
+		return parsed.version;
+	}
+	throw new Error("package.json is missing a string `version` field");
+}
+const pkg = { version: readPackageVersion() };
+const commit = (() => {
+	try {
+		return execSync("git rev-parse --short HEAD", { encoding: "utf-8" }).trim();
+	} catch {
+		return "unknown";
+	}
+})();
+
+export default defineConfig({
+	entry: [
+		"src/index.ts",
+		// Request context (ALS singleton - must be a separate entry for dedup)
+		"src/request-context.ts",
+		// Astro integration (build-time)
+		"src/astro/index.ts",
+		"src/astro/middleware.ts",
+		"src/astro/middleware/setup.ts",
+		"src/astro/middleware/auth.ts",
+		"src/astro/middleware/redirect.ts",
+		"src/astro/middleware/request-context.ts",
+		"src/astro/types.ts",
+		// Database adapters (config-time + runtime via virtual:emdash/dialect)
+		"src/db/index.ts",
+		"src/db/sqlite.ts",
+		"src/db/libsql.ts",
+		"src/db/postgres.ts",
+		// Query instrumentation (used by first-party adapters like @emdash-cms/cloudflare)
+		"src/database/instrumentation.ts",
+		// Storage adapters (runtime - loaded via virtual:emdash/storage)
+		"src/storage/local.ts",
+		"src/storage/s3.ts",
+		// Media providers
+		"src/media/index.ts",
+		"src/media/local-runtime.ts",
+		// Runtime exports (depends on virtual modules - for live.config.ts)
+		"src/runtime.ts",
+		// Seed engine
+		"src/seed/index.ts",
+		// CLI
+		"src/cli/index.ts",
+		// Client (programmatic editing API)
+		"src/client/index.ts",
+		"src/client/cf-access.ts",
+		// SEO helpers
+		"src/seo/index.ts",
+		// Public page contributions
+		"src/page/index.ts",
+		// Plugin admin utilities (shared helpers for plugin admin.tsx files)
+		"src/plugin-utils.ts",
+		// Standard plugin adapter (loaded by virtual:emdash/plugins at runtime)
+		"src/plugins/adapt-sandbox-entry.ts",
+	],
+	format: "esm",
+	dts: true,
+	clean: true,
+	define: {
+		__EMDASH_VERSION__: JSON.stringify(pkg.version),
+		__EMDASH_COMMIT__: JSON.stringify(commit),
+	},
+	// Externalize native modules, dialect-specific packages, and internal shared modules
+	external: [
+		// Native modules that use __filename
+		"better-sqlite3",
+		"bindings",
+		"file-uri-to-path",
+		// Dialect-specific packages
+		"@libsql/kysely-libsql",
+		"pg",
+		// Build tooling (CLI-time dependency with native bindings)
+		"tsdown",
+		// Astro virtual modules
+		"astro:middleware",
+		"astro:content",
+		// EmDash virtual modules (resolved at runtime by Vite)
+		/^virtual:emdash\//,
+	],
+});