feat: skills disable command + sync wizard pre-checks installed skills (#465)

src/cli.ts

@@ -335,7 +335,7 @@ async function main() {
       break;
       
     case 'skills': {
-      const { showStatus, runSkillsSync, enableSkill } = await import('./skills/index.js');
+      const { showStatus, runSkillsSync, enableSkill, disableSkill } = await import('./skills/index.js');
       switch (subCommand) {
         case 'status':
           await showStatus();
@@ -347,6 +347,13 @@ async function main() {
           }
           enableSkill(args[2]);
           break;
+        case 'disable':
+          if (!args[2]) {
+            console.error('Usage: lettabot skills disable <name>');
+            process.exit(1);
+          }
+          disableSkill(args[2]);
+          break;
         default:
           await runSkillsSync();
       }

src/skills/sync.ts

@@ -149,11 +149,12 @@ export async function runSkillsSync(): Promise<void> {
     }
   }
   
-  // Start with no skills selected (user must explicitly enable)
+  // Pre-check currently installed skills so the user edits from current state
+  const currentlyInstalled = skills.filter(s => s.installed).map(s => s.name);
   const selected = await p.multiselect({
     message: 'Enable skills (space=toggle, enter=confirm):',
     options,
-    initialValues: [], // Disabled by default
+    initialValues: currentlyInstalled,
     required: false,
   });
   
@@ -220,6 +221,24 @@ export async function runSkillsSync(): Promise<void> {
   p.outro(`✨ Added ${toAdd.length}, removed ${toRemove.length} skill(s)`);
 }
 
+/**
+ * Non-interactively disable a single skill by name.
+ */
+export function disableSkill(name: string): void {
+  const dest = join(TARGET_DIR, name);
+  if (!existsSync(dest)) {
+    console.log(`Skill '${name}' is not enabled.`);
+    return;
+  }
+  try {
+    rmSync(dest, { recursive: true, force: true });
+    console.log(`Disabled skill '${name}'.`);
+  } catch (e) {
+    console.error(`Failed to disable '${name}': ${e}`);
+    process.exit(1);
+  }
+}
+
 /**
  * Non-interactively enable a single skill by name.
  * Searches BUNDLED_SKILLS_DIR, then GLOBAL_SKILLS_DIR, then SKILLS_SH_DIR.

src/skills/wizard.ts

@@ -294,5 +294,6 @@ export async function showStatus(): Promise<void> {
   
   log.info('');
   log.info(`  To enable:  lettabot skills enable <name>  (or run: lettabot skills)`);
+  log.info(`  To disable: lettabot skills disable <name>`);
   log.info(`  Skills dir: ${WORKING_SKILLS_DIR}`);
 }

vitest.config.ts

@@ -2,7 +2,7 @@ import { defineConfig } from 'vitest/config';
 
 export default defineConfig({
   test: {
-    exclude: ['dist/**', 'node_modules/**'],
+    exclude: ['dist/**', 'node_modules/**', '.git/**'],
   },
 });