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","**_{_{![P2 Badge](https://img.shields.io/badge/P2-yellow?style=flat)}} Wire the new backend contract tests into CI**\n\nThe checked CI workflow still invokes `pytest` from the repo root, where the root `pytest.ini` restricts collection to `tests`, so this new `backend/tests` module is outside the default test run. I verified default collection from the repo root does not include these 7 backend contract tests; once the existing suite is migrated back to green, these package-specific contracts still won't protect the new backend unless CI or `testpaths` includes `backend/tests`.\n\nUseful? React with 👍 / 👎.","backend/tests/test_backend_contracts.py","RIGHT","**_{_{![P1 Badge](https://img.shields.io/badge/P1-orange?style=flat)}} Refresh the generated manifest with pyproject changes**\n\nThe manifest workflow checks `CLAUDE.md` against `backend/pyproject.toml`, but after this package rename/version change the generated block still says package `edcmbone` version `0.1.0`. I ran the same check from `.github/workflows/manifest-check.yml` and it exits nonzero with “CLAUDE.md manifest block is stale or missing,” so this commit will fail that required CI job unless the manifest block is regenerated alongside the pyproject metadata.\n\nUseful? React with 👍 / 👎.","backend/pyproject.toml",8,"**_{_{![P1 Badge](https://img.shields.io/badge/P1-orange?style=flat)}} Keep the canonical edcmbone package available**\n\nIn the checked `.github/workflows/ci.yml`, CI installs `./backend` and then runs the repo-root `pytest`; `tests/conftest.py` and several tests still explicitly load `backend/src/edcmbone` for `CanonLoader` and metrics. With this package list and the move of `backend/src/edcmbone` to `backend_old`, collection now fails with `ImportError: cannot import name 'CanonLoader'` and `FileNotFoundError` for `backend/src/edcmbone/metrics/*.py`, so the existing test suite cannot run until the canonical package/tests are migrated together or the package remains available.\n\nUseful? React with 👍 / 👎.",15,"## Pull request overview\n\nThis PR introduces a new minimal Python backend distribution (`edcmbone-backend`) that models “boundary objects” backed by a UCNS carrier and always preserves an explicit unresolved-continuation (`hmmm`) record, while moving the prior full backend implementation into `backend_old/`.\n\n**Changes:**\n- Added `edcmbone_backend` with `Hmmm`, `BoundaryObject`, and boundary construction/merge/serialization helpers.\n- Added a lightweight UCNS engine (`backend/src/ucns`) plus a root-level `ucns.py` compatibility shim.\n- Added backend-specific contract-style tests and updated backend packaging/README + example quickstart.\n\n### Reviewed changes\n\nCopilot reviewed 10 out of 31 changed files in this pull request and generated 4 comments.\n\n

Show a summary per file

\n\n| File | Description |\\n| ---- | ----------- |\\n| `ucns.py` | Adds a top-level compatibility shim exposing the UCNS v0.4 API under `import ucns`. |\\n| `backend/src/ucns/__init__.py` | Introduces the minimal UCNS engine used by the new backend. |\\n| `backend/src/edcmbone_backend/__init__.py` | Implements the new UCNS-only backend boundary objects and APIs. |\\n| `backend/tests/test_backend_contracts.py` | Adds contract-style tests validating import surface, `Hmmm` behavior, and UCNS-backed merge semantics. |\\n| `backend/examples/boundary_quickstart.py` | Adds a runnable smoke demo for boundary creation/merge/serialization. |\\n| `backend/README.md` | Refocuses backend docs on the new minimal package and lifecycle. |\\n| `backend/pyproject.toml` | Renames/publishes backend as `edcmbone-backend` and configures wheel packaging/testpaths. |\\n| `backend_old/**` | Preserves the previous full backend implementation under `backend_old/`. |\n

\n\n\n\n\n\n\n\n---\n\n💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.","This pytest `testpaths = [\"tests\"]` setting in backend/pyproject.toml won’t be applied when CI runs `pytest` from the repo root (root pytest.ini pins collection to `tests/`). As a result, `backend/tests/` won’t run in CI unless the workflow (or root pytest config) is updated to include it.",18,"The subprocess test replaces the entire environment with only PYTHONPATH. This can break execution on some platforms (e.g., missing SYSTEMROOT/PATH/locale variables). Preserve the existing environment and override PYTHONPATH instead.",95,"In merge_boundaries(), the `if part` filter is ineffective for `hmmm` because Hmmm.__bool__ always returns True, so this condition never filters anything and is misleading.","backend/src/edcmbone_backend/__init__.py",182,"make_boundary() decides the UCNS face bit using the raw `unresolved` argument, but Hmmm/_coerce_text strips whitespace. Passing values like \" \" will be treated as unresolved for the UCNS carrier while the Hmmm text becomes empty, desynchronizing the textual and UCNS representations.",175,"@codex[agent] resolve the merge conflicts in this pull request ","### Summary\n* Added `backend/src` to the backend package pytest configuration so direct backend contract test runs can import `edcmbone_backend` and its bundled `ucns` package. [backend/pyproject.tomlL17-L19](https://github.com/The-Interdependency/edcmbone/blob/42c3cc41a51a23b294ba3bde344b3f153c1c7d7c/backend/pyproject.toml#L17-L19)\n* Updated shared test path setup to load the preserved legacy backend from `backend_old/src`, matching the PR’s package split where `backend/` is now UCNS-only. [tests/conftest.pyL6-L29](https://github.com/The-Interdependency/edcmbone/blob/42c3cc41a51a23b294ba3bde344b3f153c1c7d7c/tests/conftest.py#L6-L29)\n* Retargeted legacy parser/metrics/canon regression tests to `backend_old/src` so they no longer fail against the minimal backend package layout. [tests/test_metric_orthogonality_v02.pyL5-L6](https://github.com/The-Interdependency/edcmbone/blob/42c3cc41a51a23b294ba3bde344b3f153c1c7d7c/tests/test_metric_orthogonality_v02.py#L5-L6) [tests/test_apostrophe_normalization_and_tokenization.pyL7-L13](https://github.com/The-Interdependency/edcmbone/blob/42c3cc41a51a23b294ba3bde344b3f153c1c7d7c/tests/test_apostrophe_normalization_and_tokenization.py#L7-L13) [tests/test_polarity_balance.pyL14-L18](https://github.com/The-Interdependency/edcmbone/blob/42c3cc41a51a23b294ba3bde344b3f153c1c7d7c/tests/test_polarity_balance.py#L14-L18)\n\nCommitted changes on the current branch:\n* `471d76a Fix backend test paths after package split`\n\n**Testing**\n* ✅ `python -m pytest`\n* ✅ `python -m pytest backend/tests/test_backend_contracts.py`\n\n [View task →](https://chatgpt.com/s/cd_6a3d86e66c60819193ad74ab69f5831f)","@codex[agent] resolve conflicts. surface and repair errors in coding or 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