chore: replace dupscore with fensu dupes

.github/workflows/publish.yml

@@ -79,7 +79,6 @@ jobs:
             echo "Wheel contains generated or temporary script files"
             exit 1
           fi
-          unzip -l dist/*.whl | grep 'scripts/dupscore/dupscore.toml'
           unzip -l dist/*.whl | grep 'sqlbuild/.agents/skills/sqlbuild/references/docs/CONTENTS.md'
           python -m venv /tmp/sqlbuild-wheel-smoke
           /tmp/sqlbuild-wheel-smoke/bin/python -m pip install dist/*.whl
@@ -91,7 +90,6 @@ jobs:
           printf 'MODEL();\nSELECT 1 AS id\n' > /tmp/sqlbuild-scope-smoke/models/orders.sql
           /tmp/sqlbuild-wheel-smoke/bin/sqb --project-dir /tmp/sqlbuild-scope-smoke scope model:orders --json
           /tmp/sqlbuild-wheel-smoke/bin/sqlbuild --project-dir /tmp/sqlbuild-scope-smoke scope model:orders
-          /tmp/sqlbuild-wheel-smoke/bin/dupscore --help
       - uses: actions/upload-artifact@v4
         with:
           name: wheel-${{ matrix.platform.name }}
@@ -118,7 +116,6 @@ jobs:
             echo "Source distribution contains generated or temporary script files"
             exit 1
           fi
-          tar -tzf dist/*.tar.gz | grep 'scripts/dupscore/dupscore.toml'
       - uses: actions/upload-artifact@v4
         with:
           name: sdist

AGENTS.md

@@ -114,6 +114,13 @@
 - Keep fixes within the requested scope. Do not expand supported behavior, permissions, operational cost, or system ownership without a short product decision from the user.
 - Do not add safeguards solely for impossible or unsupported states. Record residual risks when a concern is real but outside the current contract.
 
+## Duplicated Code
+
+- Run `uv run fensu dupes --since origin/main` before review, and `uv run fensu dupes --path '<area glob>'` before adding helpers or logic to an area that may already implement them. The report is advisory: unlike `fensu check`, it never gates and never needs to reach zero.
+- Treat a genuine duplicate as evidence of possible wider drift, not only a cleanup task: a missing shared owner, parallel implementations of one concept, logic on the wrong side of a boundary, or copies that have already diverged (use `--diff`; a fix present in only one copy may be a bug in the others). Diagnose and record that wider smell before consolidating, because removing the copies erases the only deterministic signal of it.
+- Consolidate genuine duplication the change introduces or touches. Report unrelated findings as follow-ups instead of refactoring them opportunistically.
+- Members marked `[forced]` are adapter contract overrides required by `test_strict_adapter.py`. Record other intentional mirrors in `[dupes]` in `fensu.toml` with a reason.
+
 ## Bounded Review Process
 
 Orchestrating agents must run reviews as a single bounded cycle, not an open-ended loop:

CONTRIBUTING.md

@@ -43,10 +43,11 @@ pytest tests/unit/src/sqlbuild/compiler/compile/test_main.py
 To check whether a branch introduces copied or drifting code in Python or Rust, run:
 
 ```bash
-uv run dupscore clones --since origin/main
+uv run fensu dupes --since origin/main
 ```
 
-`make dupscore` reports the whole repository. See `scripts/dupscore/README.md` for options.
+`make dupes` reports the whole repository. The report is advisory and never needs to reach zero;
+`[dupes]` in `fensu.toml` configures exclusions and contract exemptions. See `fensu dupes --help`.
 
 ## Tests
 

Makefile

@@ -448,8 +448,8 @@ check-fensu:
 	uv run fensu check
 
 
-dupscore:
-	uv run dupscore clones
+dupes:
+	uv run fensu dupes
 
 
 check:

fensu.toml

@@ -271,3 +271,9 @@ remediation = "consume SQLBuild-owned SQL fact rows instead of raw parser types"
 crate_names = [
     "sqlbuild-rules-native",
 ]
+
+[[dupes.contract_exemptions]]
+contract = "src/sqlbuild/adapter/contract/classes/strict_adapter.py:StrictAdapter"
+forbidden_owners = ["src/sqlbuild/adapter/contract/classes/base_adapter.py:BaseAdapter"]
+paths = ["src/sqlbuild/adapter/contract/classes/*", "src/sqlbuild/adapters/*/classes/*"]
+reason = "tests/unit/src/sqlbuild/adapter/contract/classes/strict_adapter/test_strict_adapter.py requires every first-class adapter to define each StrictAdapter method itself instead of inheriting it from BaseAdapter."

pyproject.toml

@@ -57,7 +57,6 @@ rivers = [
 [project.scripts]
 sqb = "sqlbuild.cli.entry.main.entry:main"
 sqlbuild = "sqlbuild.cli.entry.main.entry:main"
-dupscore = "scripts.dupscore.main.dupscore:dupscore"
 
 [dependency-groups]
 dev = [
@@ -78,7 +77,7 @@ dev = [
   "pytest-cov>=7.0.0",
   "pytest-xdist>=3.8.0",
   "ruff>=0.12.0",
-  "fensu>=0.22.0",
+  "fensu>=0.23.0",
   "testcontainers>=4.8.1",
   "ty>=0.0.1a19",
 ]
@@ -90,8 +89,6 @@ python-source = "src"
 features = ["extension-module"]
 include = [
   { path = "LICENSE", format = ["sdist", "wheel"] },
-  { path = "scripts/dupscore/**/*.py", format = ["sdist", "wheel"] },
-  { path = "scripts/dupscore/dupscore.toml", format = ["sdist", "wheel"] },
 ]
 
 [tool.commitizen]