Add skills UX, i18n rollout, and session hardening (#144)

* Add skills library and management workflows

- Expose bundled skill catalog and install/import APIs
- Add skills page, create dialog, and composer shortcuts
- Wire slash commands to browse, create, install, and uninstall skills

* Switch global skills to ~/.okcode with legacy fallback

- Update skill creation and system docs to use ~/.okcode/skills
- Preserve read compatibility with existing ~/.claude/skills installs
- Add tests for skill precedence and bundled skill installation

* Gate skill commands on all composer attachments

- Treat image attachments as blocking skill-management command parsing
- Keep terminal context gating unchanged

Author: BunsDev

apps/server/src/skills/SkillService.ts

@@ -234,7 +234,10 @@ export const SkillServiceLive = Layer.succeed(SkillService, {
           input.name,
           input.description,
           input.scope,
-          { tags: input.tags, template: input.template },
+          {
+            ...(input.tags ? { tags: input.tags } : {}),
+            ...(input.template ? { template: input.template } : {}),
+          },
           input.cwd,
         ),
       catch: (cause) =>

apps/web/src/components/ChatView.tsx

@@ -3027,7 +3027,7 @@ export default function ChatView({ threadId }: ChatViewProps) {
       return;
     }
     const skillManagementCommand =
-      composerImagesForSend.length === 0 && sendableComposerTerminalContexts.length === 0
+      composerAttachmentsForSend.length === 0 && sendableComposerTerminalContexts.length === 0
         ? parseSkillManagementCommand(trimmed)
         : null;
     if (skillManagementCommand) {