Teknium 7e0e5ea03b fix(skills): cache GitHub repo trees to avoid rate-limit exhaustion on install ...

Skills.sh installs hit the GitHub API 45 times per install because the
same repo tree was fetched 6 times redundantly. Combined with search
(23 API calls), this totals 68 — exceeding the unauthenticated rate
limit of 60 req/hr, causing 'Could not fetch' errors for users without
a GITHUB_TOKEN.

Changes:
- Add _get_repo_tree() cache to GitHubSource — repo info + recursive
  tree fetched once per repo per source instance, eliminating 10
  redundant API calls (6 tree + 4 candidate 404s)
- _download_directory_via_tree returns {} (not None) when cached tree
  shows path doesn't exist, skipping unnecessary Contents API fallback
- _check_rate_limit_response() detects exhausted quota and sets
  is_rate_limited flag
- do_install() shows actionable hint when rate limited: set
  GITHUB_TOKEN or install gh CLI

Before: 45 API calls per install (68 total with search)
After:  31 API calls per install (54 total with search — under 60/hr)

Reported by community user from Vietnam (no GitHub auth configured).

2026-04-12 16:39:04 -07:00

46 KiB

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