Add graphify references for various export and processing steps

- Create exports.md for additional export options and benchmarks in graphify.
- Add extraction-spec.md detailing the extraction subagent prompt and rules.
- Introduce github-and-merge.md for instructions on cloning GitHub repositories and merging graphs.
- Implement hooks.md for setting up commit hooks and CLAUDE.md integration.
- Develop query.md for querying the graph, including pathfinding and explanation features.
- Add transcribe.md for transcribing video and audio files into text.
- Create update.md for incremental updates and handling cluster-only operations.
- Add resolve-comments.md snippet for resolving comments in code changes.

opencode-config/skill/graphify/references/hooks.md

@@ -0,0 +1,33 @@
+# graphify reference: commit hook and native CLAUDE.md integration
+
+Load this when the user asked to install the post-commit hook or wire graphify into a project's CLAUDE.md.
+
+## For git commit hook
+
+Install a post-commit hook that auto-rebuilds the graph after every commit. No background process needed - triggers once per commit, works with any editor.
+
+```bash
+graphify hook install    # install
+graphify hook uninstall  # remove
+graphify hook status     # check
+```
+
+After every `git commit`, the hook detects which code files changed (via `git diff HEAD~1`), re-runs AST extraction on those files, and rebuilds `graph.json` and `GRAPH_REPORT.md`. Doc/image changes are ignored by the hook - run `/graphify --update` manually for those.
+
+If a post-commit hook already exists, graphify appends to it rather than replacing it.
+
+---
+
+## For native CLAUDE.md integration
+
+Run once per project to make graphify always-on in Claude Code sessions:
+
+```bash
+graphify claude install
+```
+
+This writes a `## graphify` section to the local `CLAUDE.md` that instructs Claude to check the graph before answering codebase questions and rebuild it after code changes. No manual `/graphify` needed in future sessions.
+
+```bash
+graphify claude uninstall  # remove the section
+```