Add Clojure extraction support

[alendit]

Summary

Adds tree-sitter backed Clojure .clj extraction to Graphify.

• extracts namespaces, require/import edges, common top-level definitions, protocol methods, and same-file calls
• wires .clj through detection, collection, watch, hooks, docs, and skill metadata
• adds fixture-backed regression coverage for bare requires and quoted/commented non-calls

Validation

• .venv/bin/python3 -m pytest -q -> 302 passed, 2 warnings
• git diff --check -> clean

[safishamsi]

Solid Clojure extractor — the namespace/defs/require/call extraction is well-structured and the quoted-form skipping is a nice touch. Two things to resolve before we merge:

1. Merge conflict
The PR currently has mergeStateStatus: CONFLICTING — it was branched from an older v7 base. Please rebase onto current main (v0.7.19) and resolve any conflicts.

2. Missing test helper (verify or add)
Several of the new tests call _edges_with_relation() (e.g. test_clojure_import_edges_have_import_context, test_clojure_call_edges_have_call_context). Please confirm this helper exists in tests/test_languages.py — if not, add it. Without it those tests will NameError at collection time.

Minor
label_to_nid uses label.lower() which silently collapses Clojure's case-sensitive identifiers (Foo and foo resolve to the same target). Low impact for now, but worth a follow-up issue.

Once rebased and the test helper is confirmed, we'll merge. Thanks!

[alendit]

Hi @safishamsi when you say "current main" do you mean the main branch? Because it sort of looks stale to me and v8 is now the default. Tbh I'm a bit confused by the branching in this project. My best reading is to actually rebase the change on the v8 branch, I'll do that, tell we if it's wrong.

[alendit]

Confirming that the full run passes

uv run --extra sql pytest tests/test_languages.py tests/test_detect.py tests/test_multilang.py tests/test_watch.py -> 254 passed

[alendit]

Fixed the lower-case issue as suggested.

[lucasrim]

Would love to have this feature added!

[kagel]

Would also love to have this feature added!