Add unit tests for skill capabilities, skill planner, and UV setup

- Implement tests for random ID generation, ensuring preference for crypto.randomUUID.
- Create tests for runtime context capabilities, validating the injection of enabled skill capabilities.
- Add tests for skill capability parsing, including classification and command example extraction.
- Introduce tests for the skill planner, verifying tool call planning based on user requests and attachment requirements.
- Establish tests for UV setup, ensuring proper handling of Python installation scenarios and environment checks.

tests/skill-capability-parser.test.ts

@@ -0,0 +1,85 @@
+// @vitest-environment node
+
+import { describe, expect, it } from 'vitest';
+
+import { parseSkillCapability } from '../electron/gateway/skill-capability-parser';
+
+describe('skill capability parser', () => {
+  it('classifies office-style document skills as document-analysis capabilities', () => {
+    const capability = parseSkillCapability({
+      skillKey: 'docx',
+      manifestContent: `---
+name: docx
+description: Use this skill whenever the user wants to create, read, edit, or analyze .docx files.
+---
+
+# DOCX
+
+Read and analyze .docx files.`,
+    });
+
+    expect(capability.category).toBe('document');
+    expect(capability.inputExtensions).toContain('.docx');
+    expect(capability.renderHints).toEqual(expect.objectContaining({
+      card: 'document-analysis',
+      preferredView: 'summary',
+      skillType: 'document',
+    }));
+  });
+
+  it('ignores URL-like pseudo extensions when inferring file inputs', () => {
+    const capability = parseSkillCapability({
+      skillKey: 'brave-web-search',
+      manifestContent: `---
+name: web-search
+description: USE FOR web search. Returns ranked results with snippets, URLs, thumbnails.
+---
+
+GET https://api.search.brave.com/res/v1/web/search
+POST https://api.search.brave.com/res/v1/web/search`,
+    });
+
+    expect(capability.inputExtensions).toEqual([]);
+    expect(capability.requiresAuth).toBe(false);
+  });
+
+  it('detects env-driven auth without false-positives from unrelated auth substrings', () => {
+    const capability = parseSkillCapability({
+      skillKey: 'search-cli',
+      manifestContent: `---
+name: search-cli
+description: Search the web with your API key.
+author: ZN AI
+---
+
+curl -H "X-Subscription-Token: \${BRAVE_SEARCH_API_KEY}" https://example.com/search`,
+    });
+
+    expect(capability.requiredEnvVars).toEqual(['BRAVE_SEARCH_API_KEY']);
+    expect(capability.requiresAuth).toBe(true);
+  });
+
+  it('extracts safe command examples from shell fences while skipping setup commands', () => {
+    const capability = parseSkillCapability({
+      skillKey: 'find-skills',
+      manifestContent: `---
+name: find-skills
+description: Discover skills for a task.
+---
+
+\`\`\`bash
+curl -fsSL https://example.com/install.sh | bash && tool login
+npx skills find [query]
+\`\`\`
+
+\`\`\`bash
+tvly search "your query" --json
+\`\`\``,
+    });
+
+    expect(capability.commandExamples).toEqual([
+      'npx skills find [query]',
+      'tvly search "your query" --json',
+    ]);
+  });
+});