add playwright connector (v1 / 1.0.0) + commit pending docs reorganization

- new global mcp_local connector wrapping @playwright/mcp@0.0.79:
  index.js argv wrapper (--headless --isolated --no-sandbox) importing
  the package cli.js, postinstall downloads chromium-only browser,
  verify.js headless-launch probe, 24 tools with display names
- also carries the pending docs work: changelog extracted to
  CHANGELOG.md, manifest guide, SKALD.md/CLAUDE.md updates

connectors/playwright/verify.js

@@ -0,0 +1,53 @@
+// Verify-before-save probe for the Playwright connector.
+//
+// Prints exactly ONE JSON object on stdout:
+//   {"ok": bool, "message": string, "details"?: object}
+// Exit code 0 on success, 1 on failure. All diagnostics go to stderr.
+//
+// This connector has no credentials; what can actually break at runtime is
+// the Chromium side: the binary must be present and launchable headless in
+// this environment (system libraries, sandbox restrictions). The probe
+// launches a real headless Chromium on about:blank and closes it.
+import { createRequire } from "node:module";
+import { existsSync } from "node:fs";
+import { basename } from "node:path";
+
+const require = createRequire(import.meta.url);
+
+const finish = (ok, message, details) => {
+  const out = { ok, message };
+  if (details) out.details = details;
+  process.stdout.write(JSON.stringify(out) + "\n");
+  process.exit(ok ? 0 : 1);
+};
+
+let chromium;
+let executablePath;
+try {
+  // Resolve playwright-core relative to @playwright/mcp (it is a dependency
+  // of the pinned package, not of this connector's package.json).
+  const mcpRequire = createRequire(require.resolve("@playwright/mcp/package.json"));
+  ({ chromium } = mcpRequire("playwright-core"));
+  executablePath = chromium.executablePath();
+} catch (e) {
+  finish(false, `Cannot resolve the Playwright installation: ${e.message}`);
+}
+
+if (!existsSync(executablePath)) {
+  finish(false, "The Chromium binary is not installed. Reinstall the connector dependencies (the postinstall step downloads it).", { executablePath });
+}
+
+let browser;
+try {
+  browser = await chromium.launch({ headless: true, args: ["--no-sandbox"] });
+} catch (e) {
+  finish(false, `Chromium failed to launch: ${String(e.message).split("\n")[0]}`, { executablePath });
+}
+
+try {
+  const page = await browser.newPage();
+  await page.goto("about:blank");
+  finish(true, `Chromium launched headless successfully (${basename(executablePath)}).`);
+} finally {
+  await browser.close().catch(() => {});
+}