Update AI specs validation workflow to use new command structure

- Modified `validate-specs-with-ai.yml` to utilize the `--filter @pace/validate-specs` command for both changed and all spec file validations.
- Ensured consistent command usage for improved clarity and maintainability in the validation process.

Author: mrbalov

.github/workflows/validate-specs-with-ai.yml

@@ -85,10 +85,10 @@ jobs:
           
           if [ "${{ steps.changed-specs.outputs.has_changed_specs }}" = "true" ]; then
             echo "Validating only changed spec files..."
-            bun run validate-specs:ai -- --specFilePaths "${{ steps.changed-specs.outputs.spec_paths }}" --systemPrompt $(pwd)/prompts/validate-specs.system.md --userPrompt $(pwd)/prompts/validate-specs.user.md > .specs-validation/ai/result.json
+            bun run --filter @pace/validate-specs validate-specs-with-ai -- --specFilePaths "${{ steps.changed-specs.outputs.spec_paths }}" --systemPrompt $(pwd)/prompts/validate-specs.system.md --userPrompt $(pwd)/prompts/validate-specs.user.md > .specs-validation/ai/result.json
           else
             echo "No changed spec files detected, validating all specs..."
-            bun run validate-specs:ai -- --rootDir $(pwd) --systemPrompt $(pwd)/prompts/validate-specs.system.md --userPrompt $(pwd)/prompts/validate-specs.user.md > .specs-validation/ai/result.json
+            bun run --filter @pace/validate-specs validate-specs-with-ai -- --rootDir $(pwd) --systemPrompt $(pwd)/prompts/validate-specs.system.md --userPrompt $(pwd)/prompts/validate-specs.user.md > .specs-validation/ai/result.json
           fi
 
       - name: Expose validation result JSON (as base64)