Read the full instructions for an available skill by name.

**When to use:**
- BEFORE applying any workflow skill, so you follow its exact steps instead of improvising — especially the multi-step workflows (review-pr, diagnose-ci-failures, fix-errors, implement-specs, spec-driven-implementation, check-impl-against-spec, resolve-merge-conflicts, create-pr).

**When NOT to use:**
- For a one-off task with no matching skill — do not read skills speculatively just to fill context.
- For a connected MCP server — invoke its `mcp__<server>__<tool>` tools directly. If you mistakenly call ReadSkill with a server name (e.g. `tavily`, `designer-skill`), it resolves to an MCP bridge listing that server's tools when no filesystem skill exists.

**Tips:**
- If a skill `<name>` has a `<name>-local` companion, the returned content includes the local specialization after the core skill; apply the local part last.
- Only read a skill's details when you are about to use it, to conserve context.
