docs: sync documentation with actual repo state; adapt for Gitea

- Remove all .github references (removed in 6c644dd but docs still referenced)
- Rewrite review-pr skill to use Gitea API instead of gh CLI
- Add gitea-pr.sh helper for Gitea API calls (view/diff/files/comments)
- Update project structure tree: add scripts/, .woodpecker.yml, ci-cd.md,
  status-update-checklist.md, commit-docs-reminder.sh, RESEARCH-SDD-TOOLS.md
- Fix skills count 14 → 15 (add create-skill to DOCS.md)
- Remove .github references from CONTRIBUTING.md, SECURITY.md, init-project
- Add GITEA_TOKEN to .env.example
- Update CI/CD placeholder in RECOMMENDATIONS.md to Woodpecker

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.claude/skills/init-project/SKILL.md

@@ -41,9 +41,7 @@ Guide the user through setting up a new project from this template.
 
 5. **Update README.md** — Replace the template description in README.md with the actual project name and description.
 
-6. **Update .github config** — Replace `YOUR_ORG/YOUR_REPO` in `.github/ISSUE_TEMPLATE/config.yml` with the actual repository path.
-
-7. **Summary** — Show the user what was configured and suggest next steps:
+6. **Summary** — Show the user what was configured and suggest next steps:
    - Review filled documents
    - Create initial ADR for major stack decisions (`docs/adr/`)
    - Begin Phase 1 planning