Surface the scope settings on the card

Extra exclude patterns, the default-excludes switch, and the backlog budget, each
with the number that motivates it.

client/client.js

@@ -55,7 +55,24 @@ window.__ModuleLoader__.load({
       { key: 'binary', label: 'slopo executable', hint: 'Empty discovers it: managed install, then PATH, then ~/.local/bin.' },
       { key: 'autoInstall', label: 'Install slopo with uv when missing', kind: 'boolean' },
       { key: 'sourceDir', label: 'Source directory', hint: 'Empty uses the session working directory.' },
-      { key: 'sourceDirExclude', label: 'Exclude patterns', kind: 'list', hint: 'Comma separated, gitignore style.' },
+      {
+        key: 'sourceDirExclude',
+        label: 'Extra exclude patterns',
+        kind: 'list',
+        hint: 'Comma separated, gitignore style. Added to the defaults rather than replacing them.',
+      },
+      {
+        key: 'useDefaultExcludes',
+        label: 'Exclude node_modules and build output',
+        kind: 'boolean',
+        hint: 'Off means slopo parses your dependencies too — on a repo with node_modules, the difference between ~1,500 and ~114,000 code units.',
+      },
+      {
+        key: 'maxIndexUnits',
+        label: 'Refuse to embed more than this many units',
+        kind: 'number',
+        hint: 'Makes a large scope a question rather than an hours-long embed. 0 removes the limit.',
+      },
       { key: 'stateDir', label: 'State directory', hint: 'Empty uses $DSH_HOME/dsh-slopo/workspaces/<workspace>.' },
       { key: 'ignoreFile', label: 'Ignore file', hint: 'Point this at the repository to version the dismissed clusters.' },
       { key: 'embeddingRequestDelay', label: 'Delay between embedding requests (ms)', kind: 'number' },