graphify: build knowledge graph + agent-crawlable wiki

## Per Father directive 2026-05-11 (msg 92566)

> "Now create an issue on every repo I'm tracking in obsidian and create an issue to graphify and create a wiki for each one then tag Jules to each one or a codex agent"

**Action:** run `/graphify .` and `/graphify . --wiki` on this repo.

**Outputs to commit to `graphify-out/`:**
- `graph.json`, `graph.html`, `GRAPH_REPORT.md`, `wiki/` (index.md + one article per community)

**Acceptance:**
- [ ] graphify completes without errors
- [ ] graph.html opens in browser
- [ ] wiki/index.md exists
- [ ] cost.json logged
- [ ] graphify-out/ committed on a branch + PR opened

**Skill reference:** https://github.com/safishamsi/graphify

@jules — please pick this up. Alternative: assign a codex sibling.

Tracked in House Obsidian board. Auto-created by Alexandrea (Library lane) per Father 92566.

Start by running `/graphify .` and `/graphify . --wiki` as specified in the issue. Inspect the generated `graphify-out/` contents, including `graph.json`, `graph.html`, `GRAPH_REPORT.md`, `wiki/index.md`, and `cost.json`; done means the commands complete without errors, the HTML opens, the wiki exists, and the output is committed on a branch with a PR opened.

Written by the indexing model from the issue text.