feat(examples): cross-stack demo repo + parser fix for self.session.X#8
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A small but realistic project that exercises every codegraph capability end-to-end. When codegraph builds against it, you get: - 5 ROUTE edges (FastAPI @router.get/post) - 3 FETCH_CALL edges (fetch + apiClient.get + apiClient.post) - READS_FROM edges (session.query / Model.query) - WRITES_TO edges (session.add(Model(...))) - HANDLER, SERVICE, REPO, COMPONENT roles populated The demo is the canonical "click button → trace through full stack" showcase the README points at. Also includes a small parser fix: _is_session_chain() now recognises self.session.X / self.db.X patterns common in repository-style code. Without this, repos that hold the session as an instance attribute weren't getting their READS_FROM/WRITES_TO edges emitted. 9 regression tests in tests/test_demo_repo.py assert the demo continues to produce the expected edge/role counts — so future refactors can't silently break the showcase. Suite: 467 pass (was 458; +9). ruff + mypy --strict clean.
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smochan
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May 30, 2026
Pre-0.1.2 the MCP server happily returned empty results when
.codegraph/graph.db didn't exist. Claude / Cursor paraphrased that as
"workspace is empty", sending users down the wrong rabbit hole.
`_load_graph` now raises a new `GraphNotBuiltError` carrying the
resolved db path. The MCP dispatcher catches it and returns a
structured `{error, message, db_path}` payload telling the LLM exactly
what command to suggest: `codegraph build`.
v0.1.2 backlog item #8.
smochan
added a commit
that referenced
this pull request
May 30, 2026
Pre-0.1.2 the MCP server happily returned empty results when
.codegraph/graph.db didn't exist. Claude / Cursor paraphrased that as
"workspace is empty", sending users down the wrong rabbit hole.
`_load_graph` now raises a new `GraphNotBuiltError` carrying the
resolved db path. The MCP dispatcher catches it and returns a
structured `{error, message, db_path}` payload telling the LLM exactly
what command to suggest: `codegraph build`.
v0.1.2 backlog item #8.
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FastAPI + SQLAlchemy + React fixture for the canonical end-to-end showcase. 9 regression tests. Small DF1 parser fix: detect repository-pattern self.session.* chains. 467 tests total.