* docs: add core commands reference and simplify README CLI section
- New docs/reference/core.md: reference for init (active options only,
copilot as main example), check, and version commands
- docs/toc.yml: add Core Commands under Reference
- README.md: replace verbose CLI Reference section (init options table,
30+ per-agent examples, deprecated flags, env vars) with links to
reference docs; use copilot as main example throughout
* docs: add CLI reference overview page
- New docs/reference/overview.md: explains each CLI surface area
(core, integrations, extensions, presets, workflows) with key
commands and links to detailed reference pages
- docs/toc.yml: add Overview as first item under Reference
- README.md: simplify CLI Reference to single link to overview page
* docs: remove command references from overview, keep paragraphs only
* docs: add workflows reference, reorganize into docs/reference/, and add --version flag
- Move integrations.md, extensions.md, presets.md into docs/reference/
- New docs/reference/workflows.md: command reference for all workflow
commands, built-in SDD Cycle workflow with Mermaid diagram, step types,
expressions, input types, state/resume, and FAQ
- Rename workflow input feature_name to spec with prompt 'Describe what
you want to build' to match speckit.specify command terminology
- Add --version / -V flag to root specify command with tests
- Update docs/toc.yml, README.md links, and docs/upgrade.md cross-reference
to use reference/ paths
- Add workflow command to README CLI reference table
* docs: update speckit_version requirement to >=0.7.2 in workflow example
