v3.1.1

docgraph v3.1.1

Quieter pre-push output — a clean run no longer dumps a screenful into every push.

• Clean runs are one line. docgraph . with no findings now prints a single
  docgraph: clean ✓ (N tracked .md, M reachable, 0 findings) line instead of the
  multi-line banner plus a (0)-count section for every check.
• Findings keep the full detail — the self-describing banner, per-check
  sections, and remediate footer still print when a check fails, so a failed push
  is still explained end-to-end. On a finding, only the sections that actually have
  findings are shown; the empty (0) sections are dropped there too.

No flag, exit-code, or check-behaviour changes — output formatting only.