resolving an issue with git urls in superpowers-agent add

Bug fixes for broken commands after migration

release: v7.1.2 — rebuild binary with --force-<agent> directory creat…

…ion fix

docs: note that --force-<agent> creates the agent directory if it doe…

…sn't exist

chore: update version numbers and generated dates across documentation

Updating some of the superpowers agent skills from orba's repo.

feat: agents.json auto-install support for add/pull commands (v7.0.5)

When a repository contains an agents.json manifest, superpowers-agent now
automatically installs listed agents to platform-specific directories during
add and pull operations. Supports github (VS Code prompts) and opencode
(~/.config/opencode/agents/) platforms with symlink-based installation and
config tracking.

Removed some old tests and prompts, updated prompts.

Removing old skills.