fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip]

6d224861 came from a --no-checkout worktree whose empty index made the
commit drop every file except two. This restores 05b50d2b's full tree and
correctly adds stacks/stem95su/gdrive-sync.tf + the service-catalog stem95su
entry. Forward-only (parent=6d224861, no force-push); [ci skip] since the
live infra was never applied from the broken commit.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.claude/reference/github-api.md

@@ -0,0 +1,31 @@
+# GitHub API Reference
+
+> Token locations and common API patterns.
+
+## GitHub API
+- **Username**: `ViktorBarzin`
+- **Token**: `grep github_pat terraform.tfvars | cut -d'"' -f2` (git-crypt encrypted)
+- **Scopes**: Full access (repo, admin:public_key, admin:repo_hook, delete_repo, admin:org, workflow, write:packages)
+- **`gh` CLI**: Blocked by sandbox — use `curl` instead
+
+```bash
+GITHUB_TOKEN=$(grep github_pat terraform.tfvars | cut -d'"' -f2)
+
+# List repos
+curl -s -H "Authorization: token $GITHUB_TOKEN" "https://api.github.com/users/ViktorBarzin/repos?per_page=100"
+
+# Create repo
+curl -s -X POST -H "Authorization: token $GITHUB_TOKEN" "https://api.github.com/user/repos" \
+  -d '{"name":"repo-name","private":true}'
+
+# Add deploy key
+curl -s -X POST -H "Authorization: token $GITHUB_TOKEN" "https://api.github.com/repos/ViktorBarzin/<repo>/keys" \
+  -d '{"title":"key-name","key":"ssh-ed25519 ...","read_only":false}'
+
+# Create webhook
+curl -s -X POST -H "Authorization: token $GITHUB_TOKEN" "https://api.github.com/repos/ViktorBarzin/<repo>/hooks" \
+  -d '{"config":{"url":"https://ci.viktorbarzin.me/hook","content_type":"json","secret":"..."},"events":["push","pull_request"]}'
+```
+
+## Capabilities
+- **GitHub**: Create/delete repos, push code, manage SSH/deploy keys, manage webhooks, manage org settings, manage packages