feat(std-platform): register SynonymStrategy in derivation runner

Wave 6+ to_synonym T4: to_synonym moves from coming_soon -> active. The
runner now lights up 3 strategies (semantic_hint / value_semantics /
synonym) and 3 remain coming_soon (qc_rule / defect_code / data_model).
version_released event fanout triggers all three.

Updates runner / derive-handler tests for the 3-active layout. The
'handlers routes version_released' test relaxes from n_links==1 to
n_links>=1 since to_synonym contributes an additional link when the
seeded element resolves to a real semantic_source row.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Gemini CLI

data_agent/standards_platform/derivation/runner.py

@@ -8,13 +8,14 @@
 from typing import Optional
 
 from .strategies.semantic_hint import SemanticHintStrategy
+from .strategies.synonym import SynonymStrategy
 from .strategies.value_domain import ValueDomainStrategy
 from .strategy_base import DerivationStrategy
 
 
 _REGISTRY: dict[str, Optional[DerivationStrategy]] = {
     "to_semantic_hint": SemanticHintStrategy(),
-    "to_synonym": None,
+    "to_synonym": SynonymStrategy(),
     "to_value_semantics": ValueDomainStrategy(),
     "to_qc_rule": None,
     "to_defect_code": None,
@@ -24,7 +25,7 @@
 # Friendly descriptions for UI
 _DESCRIPTIONS: dict[str, str] = {
     "to_semantic_hint": "派生标准 data_element 到 agent_semantic_hints (column-scope hint)",
-    "to_synonym": "(Wave 6+) 派生术语别名到 sources.synonyms",
+    "to_synonym": "派生标准 data_element/term 名称别名到 agent_semantic_sources.derived_synonyms",
     "to_value_semantics": "派生标准值域 (enumeration/range/pattern) 到 agent_semantic_hints",
     "to_qc_rule": "(Wave 6+) 派生质检规则",
     "to_defect_code": "(Wave 6+) 派生缺陷分类编码",

data_agent/standards_platform/tests/test_derivation_runner.py

@@ -49,9 +49,12 @@ def test_get_strategy_status_lists_six(engine):
     assert "to_synonym" in names
     active_names = {s["name"] for s in statuses if s["status"] == "active"}
     coming_names = {s["name"] for s in statuses if s["status"] == "coming_soon"}
-    # Wave 6-eng: to_value_semantics moved from coming_soon → active
-    assert active_names == {"to_semantic_hint", "to_value_semantics"}
-    assert len(coming_names) == 4
+    # Wave 6+ to_synonym: 3 active strategies, 3 coming_soon (to_qc_rule,
+    # to_defect_code, to_data_model).
+    assert active_names == {
+        "to_semantic_hint", "to_value_semantics", "to_synonym",
+    }
+    assert len(coming_names) == 3
 
 
 def test_dispatch_runs_active_strategy(engine, fresh_clause):
@@ -62,13 +65,16 @@ def test_dispatch_runs_active_strategy(engine, fresh_clause):
         assert "to_semantic_hint" in results
         assert results["to_semantic_hint"]["ok"] is True
         assert results["to_semantic_hint"]["new"] == 1
-        # Wave 6-eng: to_value_semantics is now active too. The seeded element
-        # has no value_domain → strategy succeeds with 0 new links.
+        # to_value_semantics: no value_domain seeded → 0 new
         assert "to_value_semantics" in results
         assert results["to_value_semantics"]["ok"] is True
         assert results["to_value_semantics"]["new"] == 0
+        # to_synonym: bound_table='cq_dltb' resolves to a real semantic_source
+        # row (seeded by 4-27 production data), so 1 link is produced.
+        assert "to_synonym" in results
+        assert results["to_synonym"]["ok"] is True
         # Coming-soon strategies aren't run
-        assert "to_synonym" not in results
+        assert "to_qc_rule" not in results
     finally:
         _cleanup(engine, ver_id)
 
@@ -78,9 +84,9 @@ def test_dispatch_with_strategies_filter(engine, fresh_clause):
     _seed_bound_element(engine, ver_id)
     try:
         results = runner.dispatch(
-            version_id=ver_id, strategies=["to_synonym"]
+            version_id=ver_id, strategies=["to_qc_rule"]
         )
-        # to_synonym is coming_soon → not in active, results empty
+        # to_qc_rule is coming_soon → not in active, results empty
         assert results == {}
     finally:
         _cleanup(engine, ver_id)
@@ -118,12 +124,13 @@ def test_handlers_dispatch_routes_version_released(engine, fresh_clause):
             "id": "test-evt",
             "attempts": 0,
         })
-        # Should have produced a derived link
+        # Should have produced at least 1 derived link (to_semantic_hint +
+        # to_synonym may each contribute; assert >= 1 rather than == 1).
         with engine.connect() as c:
             n_links = c.execute(text(
                 "SELECT count(*) FROM std_derived_link "
                 "WHERE source_version_id=:v AND status='active'"
             ), {"v": ver_id}).scalar()
-        assert n_links == 1
+        assert n_links >= 1
     finally:
         _cleanup(engine, ver_id)

data_agent/standards_platform/tests/test_derive_handler.py

@@ -52,11 +52,11 @@ def test_list_strategies(monkeypatch):
     assert "to_semantic_hint" in names
     active = [s for s in strats if s["status"] == "active"]
     coming = [s for s in strats if s["status"] == "coming_soon"]
-    # Wave 6-eng: to_value_semantics activated alongside to_semantic_hint.
-    assert len(active) == 2
-    assert len(coming) == 4
+    # Wave 6+: to_synonym activated (3 active, 3 coming_soon).
+    assert len(active) == 3
+    assert len(coming) == 3
     assert {s["name"] for s in active} == {
-        "to_semantic_hint", "to_value_semantics",
+        "to_semantic_hint", "to_value_semantics", "to_synonym",
     }