split: deterministic-tests, obsidian-plugin, local-cli, test-client, frontend root

New deterministic-tests workspace: scripted multi-client harness against
a real server (~110 scenario tests, server-control, managed-websocket,
test-runner). Updates to existing workspaces: obsidian-plugin (settings,
cursors, plugin entrypoint), local-client-cli (args, cli, file-watcher,
node-filesystem, path-utils + tests), test-client (mock-agent/client,
cli, error tracker). Bumps frontend root package.json/lock and adds
eslint config tweaks.

frontend/eslint.config.mjs

@@ -8,7 +8,7 @@ export default [
             "sync-client/src/services/types.ts",
             "**/dist/",
             "**/*.mjs",
-            "**/*.js"
+            "**/*.js",
         ]
     },
     ...tseslint.config({
@@ -17,7 +17,9 @@ export default [
         },
         extends: [eslint.configs.recommended, tseslint.configs.all],
         rules: {
+            "no-console": "error",
             "no-unused-vars": "off",
+            "curly": ["error", "all"],
             "@typescript-eslint/restrict-template-expressions": "off",
             "@typescript-eslint/no-unused-vars": "off",
             "@typescript-eslint/no-floating-promises": [