[docs] Update documentation for features from 2025-11-18

[github-actions]

Documentation Updates - November 18, 2025

This PR updates the documentation based on user-facing features merged in the last 24 hours.

Features Documented

• Update command behavior change (from Change update command to override local changes by default #4233): Default now overrides local changes; --merge flag for 3-way merge
• Git fallback support (from Add git fallback for update command when GitHub API authentication fails #4238): Works without GitHub authentication for public repositories

Changes Made

Updated docs/src/content/docs/setup/cli.md to document:

1. New default behavior: replaces local file with upstream version (no conflicts)
2. New --merge flag to opt into 3-way merge mode (preserves local changes)
3. Git command fallback when GitHub API authentication fails
4. Clear comparison table showing default vs merge modes
5. Authentication section explaining public repository support

Merged PRs Referenced

• Change update command to override local changes by default #4233 - Changed update command to override local changes by default
• Add git fallback for update command when GitHub API authentication fails #4238 - Added git fallback when GitHub API authentication fails

Documentation Quality

• Follows Diátaxis framework (Reference documentation style)
• Uses neutral, technical tone per documentation guidelines
• Includes clear examples and comparison table
• Maintains consistency with existing CLI documentation format

Notes

Other PRs from the last 24 hours:

• Add comprehensive strict mode reference documentation #4224 - Strict mode documentation (already added comprehensive docs)
• Document strict mode enforcement areas and CLI flag in schema #4232 - Schema documentation updates (internal, schema-level only)
• Cache copilot PR data with date-based keys for cross-workflow reuse #4248 - Cache optimization for internal workflows (not user-facing)

All significant user-facing features from the last 24 hours are now documented.

AI generated by Daily Documentation Updater