Hardens the installer + auto-updater against the Gitea private-repo trap
(Clover #5 diagnosis): an unauthenticated raw-file read of a sign-in-gated
Gitea returns the HTML Sign-In page at HTTP 200, which `curl -fsSL` treats as
success — so the old code parsed HTML as VERSION/MANIFEST/larry.sh content and
silently aborted (or overwrote real files with HTML). This stranded a work-box
at v0.7.3 until the REQUIRE_SIGNIN_VIEW=false flip.
- New lib/fetch-safe.sh: fetch_validate URL DEST KIND [MAX_TIME]. Detects the
HTML-login trap (DOCTYPE/<html/"Sign In - Gitea"/<title>Sign In markers, or
text/html Content-Type) and validates content shape per file type (semver
VERSION, path-list MANIFEST, shebang larry.sh, non-HTML .sh). On failure:
actionable error + non-zero, target file left untouched.
- install-larry.sh (curl|bash bootstrap) and larry.sh self_update() each carry
a byte-identical inline copy (both run before lib/ can be sourced).
- Every remote-content fetch routed through the validator: install fetch();
agent fetch; sync_from_manifest MANIFEST + per-file; _fetch_with_fallback.
- Optional LARRY_GITEA_TOKEN / GITEA_TOKEN env var adds Authorization: token
<PAT> for authenticated fetch against private repos. Never hardcoded/logged.
Documented in --help + MANUAL.md.
Co-Authored-By: Clover (Claude Opus 4.7) <noreply@anthropic.com>
