feat: optional per-invocation MCP tool call cap #79

Namespace: <a href="https://konflux-ui.apps.kflux-prd-rh02.0fk9.p1.openshiftapps.com/ns/ai5-marketplace-tenant" rel="nofollow">ai5-marketplace-tenant
PipelineRun: <a href="https://konflux-ui.apps.kflux-prd-rh02.0fk9.p1.openshiftapps.com/ns/ai5-marketplace-tenant/pipelinerun/google-lightspeed-agent-on-pull-request-9m2kj" rel="nofollow">google-lightspeed-agent-on-pull-request-9m2kj

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Status	Duration	Name
🟢 Succeeded	5 seconds	init
🟢 Succeeded	9 seconds	clone-repository
🟢 Succeeded	7 seconds	prefetch-dependencies
🟢 Succeeded	2 minutes	build-container
🟢 Succeeded	11 seconds	build-image-index
🟢 Succeeded	5 seconds	apply-tags
🟢 Succeeded	34 seconds	clair-scan
🟢 Succeeded	57 seconds	clamav-scan
🟢 Succeeded	6 seconds	coverity-availability-check
🟢 Succeeded	13 seconds	deprecated-base-image-check
🟢 Succeeded	6 seconds	push-dockerfile
🟢 Succeeded	45 seconds	ecosystem-cert-preflight-checks
🟢 Succeeded	35 seconds	rpms-signature-scan
🟢 Succeeded	9 seconds	sast-shell-check
🟢 Succeeded	10 seconds	sast-unicode-check
🟢 Succeeded	29 seconds	sast-snyk-check