Publish agentctl 0.3.0 workflow API v1 documentation

[Ompragash]

What changed

• pins the documentation build to agentctl commit 2aeaa88fba71162206b5f08f5bda4f0150247e4f
• updates the public workflow API badge and metadata to agentctl.dev/v1
• synchronizes canonical 0.3.0 examples, references, install/container commands, compatibility guidance, and generated provenance
• preserves the separate agentctl.dev/pack/v1alpha1 pack-manifest contract and the explicit workflow-header migration note

Local validation

• AGENTCTL_REPO=/Users/ompragash/agentctl pnpm verify:agentctl
• 44 browser tests passed across desktop, tablet, and mobile; one intentional mobile-search case skipped
• canonical docs, writing, Mermaid, workflow policy, Markdown, spelling, Astro, routes, links, accessibility, artifact structure, and search checks passed