Community labeling was an agent-only step (skill.md Step 5): inside Claude Code
or Gemini CLI the agent names communities itself. Run as a bare CLI
(python -m graphify extract . --backend X), no agent does Step 5, so labels
stayed Community 0/1/2 for every backend.
Add graphify/labeling.py: one batched _call_llm asking the backend for a
{cid: name} map from each community's top node labels (god nodes first),
with per-community placeholder fallback and graceful degradation (no backend,
API error, or malformed reply -> Community N, never crashes).
Wire it in:
- cluster-only auto-labels when no .graphify_labels.json exists (the reported
repro path); --no-label opts out, --backend=<name> overrides auto-detect
- new `graphify label <path>` subcommand force-regenerates names
- extract prints a hint pointing standalone users at cluster-only
Tests mock the backend (no network): happy path, partial/fenced/malformed
replies, no-backend and error fallback, god_nodes dict shape.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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