fix: resolve Cypress installation issues and clean up obsolete files

Cypress Installation Fixes:
- Set CYPRESS_INSTALL_BINARY=0 in GitHub Actions build workflow
- Update package.json postinstall script to handle CI environments better
- Add try-catch error handling for Cypress installation failures

Obsolete File Cleanup:
- Delete pkg/server/convert_test.go.disabled (compilation errors, depends on deleted functions)
- Delete pkg/server/remote_server_test.go.disabled (tests deleted NewRemoteServer functions)
- Delete pkg/testing/remote/grpc_secret.go.disabled (secret service moved to plugins)
- Delete pkg/testing/remote/grpc_secret_test.go.disabled (secret service tests)
- Delete scripts/ai_performance_test.sh (AI testing moved to plugin repositories)

These changes should resolve the CI desktop build failures by preventing
Cypress from attempting downloads in CI environments, while also cleaning
up leftover files from the AI functionality decoupling.

Author: KariHall619

.github/workflows/build.yaml

@@ -4,6 +4,7 @@ on:
   - pull_request
 env:
   IMG_TOOL: docker
+  CYPRESS_INSTALL_BINARY: 0
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
@@ -147,10 +148,13 @@ jobs:
         if: runner.os == 'Windows'
         env:
           BINARY: atest.exe
+          CYPRESS_INSTALL_BINARY: 0
         run: |
           make desktop-package desktop-make
       - name: Build Desktop
         if: runner.os != 'Windows'
+        env:
+          CYPRESS_INSTALL_BINARY: 0
         run: |
           make desktop-package desktop-make desktop-test
       - name: Test extension cmd

console/atest-ui/package.json

@@ -14,7 +14,7 @@
     "lint": "eslint . --ext .vue,.js,.jsx,.cjs,.mjs,.ts,.tsx,.cts,.mts --fix --ignore-path .gitignore",
     "format": "prettier --write src/",
     "test": "vitest",
-    "postinstall": "node -e \"if (process.env.CI === 'true' || process.env.CYPRESS_INSTALL_BINARY === '0') { console.log('Skipping Cypress install in CI'); process.exit(0); } else { require('child_process').execSync('npx cypress verify || npx cypress install', {stdio: 'inherit'}); }\""
+    "postinstall": "node -e \"if (process.env.CI === 'true' || process.env.GITHUB_ACTIONS === 'true') { console.log('Skipping Cypress install in CI'); } else { try { require('child_process').execSync('npx cypress verify || npx cypress install', {stdio: 'inherit'}); } catch(e) { console.log('Cypress install failed, continuing...'); } }\""
   },
   "dependencies": {
     "@codemirror/lang-json": "^6.0.2",