First-run data (2026-06-17) showed the $20 ceiling covered only the
canary + 5 of ~22 scannable repos before pausing the rotation, leaving
16 repos un-deep-scanned that night. Raise TOTAL_BUDGET_USD default to
$120 so every repo gets a deep agentic pass each night (~22 x ~$5 +
canary, with headroom). Spend draws on the Max subscription pool; the
per-target cap ($12) and round-robin rotation are unchanged, so this is
a ceiling raise, not a per-repo cost change. Updates README, DEPLOY, and
the systemd Environment example to match.
Rewrite README + DEPLOY-R720 for the clean-clone mirror model, the read-only GH_TOKEN
PAT recipe, the global hook installer, and the no-CI-by-design decision.