Add .cursor/skills to skill search paths

[Copilot]

Adds .cursor/skills as a skill discovery location alongside the existing .agents/skills path.

Changes

• pkg/codingcontext/paths.go: Added .cursor/skills to skillSearchPaths() return slice
• docs/reference/search-paths.md: Documented new search path with directory structure examples
• pkg/codingcontext/context_test.go: Added test coverage for .cursor/skills discovery and coexistence with .agents/skills

Skills in both directories are now discovered and merged into the available skills list. Discovery order follows the paths array sequencing.

Original prompt

Add .cursor/skills to the skill search paths.

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[Copilot]

Pull request overview

This PR adds .cursor/skills as an additional skill discovery location, enabling Cursor IDE users to store skills alongside the existing .agents/skills directory. Skills from both directories are discovered and merged seamlessly.

Key changes:

• Extended skill search paths to include .cursor/skills directory
• Added comprehensive test coverage for the new search path
• Updated reference documentation with examples

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
pkg/codingcontext/paths.go	Added .cursor/skills to the skillSearchPaths() function, following the same pattern used for command search paths
pkg/codingcontext/context_test.go	Added two table-driven tests verifying skill discovery from .cursor/skills and coexistence with .agents/skills
docs/reference/search-paths.md	Documented the new .cursor/skills search path with directory structure examples