fix(graphify): roll pin back to v0.9.77

The 1.0.0 bump took a bogus tag. Graphify-Labs/graphify carries a
v1.0.0 branch from 2026-04-05 that sits 2126 commits behind v0.9.77,
still ships pyproject name graphifyy 0.1.10, and never reached PyPI,
where 0.9.77 is the latest release. nix-update picked it because it is
the highest semver tag available.

It also does not build here. Its pyproject hard-requires graspologic,
which pulls python-future, and nixpkgs disables that for Python >= 3.13
(this flake is on 3.14). Lowering the interpreter is no way out either:
python312 fails further down the chain on falcon and hyppo. 0.9.x ships
a networkx Louvain fallback for a missing Leiden backend; 1.0.0 imports
graspologic.partition.leiden unconditionally, so it is worse code even
if it did build.

Dependency corrections for the pinned source:
- datasketch dropped: upstream vendored MinHash into
  graphify/_minhash.py, which also retires the pybloomfilter3
  dontCheckPythonMetadata workaround in default.nix
- numpy added: graphify/_minhash.py imports it directly

Verified with nix build .#graphify (pythonImportsCheck passes) and
graphify --version reporting 0.9.77.

Refs nix-overlay-olq

packages/graphify/package.nix

@@ -6,14 +6,18 @@
 
 python3Packages.buildPythonApplication rec {
   pname = "graphify";
-  version = "1.0.0";
+  version = "0.9.77";
   pyproject = true;
 
+  # Do not bump to the v1.0.0 tag: it is a stale branch 2126 commits behind
+  # v0.9.77 (tagged 2026-04-05, pyproject still says graphifyy 0.1.10) and was
+  # never published to PyPI, where 0.9.77 is the latest release. nix-update
+  # picks v1.0.0 as the highest tag, so check PyPI before taking its result.
   src = fetchFromGitHub {
     owner = "Graphify-Labs";
     repo = "graphify";
     rev = "v${version}";
-    hash = "sha256-YPiQChaoX64XBFORI5CmKe/LX0ECu1cYZWElGD7X2eA=";
+    hash = "sha256-CvJ6GoV1nSzFGfLQbzKSHDUNOuOPQZaYOf/idcSHkPw=";
   };
 
   build-system = with python3Packages; [
@@ -24,7 +28,7 @@ python3Packages.buildPythonApplication rec {
   # Missing grammars will be downloaded by tree-sitter at runtime on demand.
   dependencies = with python3Packages; [
     networkx
-    datasketch
+    numpy
     rapidfuzz
     tree-sitter
     tree-sitter-python