Adds obsidian-wiki graph-analyse <vault> — computes god nodes, community
clusters, surprising cross-community connections, dead-ends, and isolated
pages from the vault's wikilink graph. No LLM, no API calls.
- New obsidian_wiki/graph_analysis.py: parse_vault_graph() (wikilink + tag
extraction), god_nodes() (degree ranking), detect_communities_greedy()
(label-propagation, pure Python, O(n·k)), detect_communities() (tries
leidenalg+igraph first, falls back to greedy), surprising_connections()
(cross-community edges ranked by inverse sqrt of cross-degree product),
analyse_vault() top-level entry returning JSON-ready dict.
- CLI: graph-analyse <vault> [--top N] [--pretty]
- Optional obsidian-wiki[graph] extra for Leiden (leidenalg + igraph).
- wiki-status SKILL.md insights mode updated: now calls graph-analyse first
instead of building the wikilink graph manually, with fallback instructions.
- 27 new tests covering parsing, metrics, community detection, surprising
connections, full integration, and CLI.
ar9av