新增cdsl

json_to_cdsl/README.md

@@ -24,8 +24,8 @@ implementation are emitted with `execution_status: "deferred"` instead.
 
 ```bash
 PYTHONPATH=backend/engine python json_to_cdsl/evidence_v2_to_cdsl.py \
-  /path/to/evidence_v2 \
-  --truth-dir /path/to/evidence_v2/truth \
+  json_to_cdsl/input/evidence_v2 \
+  --truth-dir json_to_cdsl/input/evidence_v2/truth \
   --out json_to_cdsl/output \
   --workers 1
 ```
@@ -41,3 +41,9 @@ For every `*.solidworks_evidence_v2.json` input it writes:
 The optional STEP directory is used only to infer a host face when exactly one
 candidate is compatible with a Hole Wizard's captured locations. Ambiguous
 geometry stays in `unresolved`; the converter never invents a selector.
+
+Source records are discovered recursively. Output remains flat and is named by
+the normalized full source filename. Files that normalize to the same part ID
+receive a deterministic relative-path hash suffix, so every input record maps
+to a distinct output. When a matching STEP file exists, it is resolved through
+the same relative subdirectory as its source record.