Adds content/docs/workspace-config.mdx covering:
- Config tab overview (how to open, form vs raw YAML mode)
- Claude Settings panel: gating condition, where to find it in the UI
- Effort levels table: low / medium / high / xhigh (extended thinking) / max
with descriptions, use-case guidance, cost/latency/quality tradeoffs
- Task budget: token ceiling, 20k minimum, when it applies, sizing guidance
- config.yaml reference with three annotated examples
- Beta header note: task-budgets-2026-03-13 added automatically by executor
- Executor wiring callout: config stored today, executor wiring ships next release
Updates meta.json: adds workspace-config after concepts in the nav.
Closes#608 (docs portion)
Source PRs: molecule-monorepo#639 (effort + task_budget UI), #654 (max level)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>