chore: update .gitignore — exclude binary, debug screenshots, MCP config

- Add veza-backend-api/veza-api (99MB ELF binary) to gitignore
- Add root-level debug/test screenshot patterns
- Add .mcp.json (local MCP config)
- Remove veza-api binary from tracking

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitignore

@@ -109,9 +109,24 @@ jwt-public.pem
 
 veza-backend-api/main
 veza-backend-api/api
+veza-backend-api/veza-api
 veza-backend-api/migrate_tool
 chat_exports/
 
+# Debug/test screenshots (root level)
+screenshot-*.png
+sidebar-*.png
+player-*.png
+login-*.png
+search-*.png
+track-*.png
+test-*.png
+dashboard-*.png
+report-*.html
+
+# MCP config (local)
+.mcp.json
+
 # Environment / Secrets — config templates only, never commit real .env
 config/incus/env/*.env
 !config/incus/env/env.example
@@ -119,11 +134,14 @@ config/incus/env/*.env
 # Playwright
 /test-results/
 /playwright-report/
+tests/e2e/test-results/
+tests/e2e/VEZA_AUDIT_REPORT.html
+tests/e2e/VEZA_AUDIT_REPORT.json
 apps/web/e2e-results.json
+e2e-results.json
 /blob-report/
 /playwright/.cache/
 /playwright/.auth/
-apps/web/e2e/.auth/
 
 *storybook.log
 storybook-static