feat(install-guidelines): add Phase 0 block, document numbering, French...
feat(install-guidelines): add Phase 0 block, document numbering, French localization, and order field support
- Add buildPhase0Block() and buildDocsHeader() functions for French-localized Phase 0 prompting technique
- Implement document numbering (1/N, 2/N, etc.) in buildDocsInjectionBlock()
- Parse and sort by optional 'order' field in frontmatter for explicit reading order
- Update buildStepSkillFile() with numbered references and French formatting
- Apply Phase 0 block and numbering to buildClaudeAgentFile() and buildClaudeSkillFile()
- Convert path handling: @guidelines/docs/... → guidelines/docs/... (preserves guidelines/ segment)
- Change terminology from English 'First of all read:' to French 'Avant de continuer...'