fix(context): rank trusted state by query relevance

tests/test_context_builder.py

@@ -143,6 +143,52 @@ def test_project_state_respects_total_budget(tmp_data_dir, sample_markdown):
     assert len(pack.formatted_context) <= 120
 
 
+def test_project_state_query_relevance_before_truncation(tmp_data_dir, sample_markdown):
+    """Relevant trusted state should survive the project-state budget cap."""
+    init_db()
+    init_project_state_schema()
+    ingest_file(sample_markdown)
+
+    set_state(
+        "p04-gigabit",
+        "contact",
+        "abb-space",
+        "ABB Space is the primary vendor contact for polishing, CCP, IBF, procurement coordination, "
+        "contract administration, interface planning, and delivery discussions.",
+    )
+    set_state(
+        "p04-gigabit",
+        "decision",
+        "back-structure",
+        "Option B selected: conical isogrid back structure with variable rib density. "
+        "Chosen over flat-back for stiffness-to-weight ratio and manufacturability.",
+    )
+    set_state(
+        "p04-gigabit",
+        "decision",
+        "polishing-vendor",
+        "ABB Space selected as polishing vendor. Contract includes computer-controlled polishing "
+        "and ion beam figuring.",
+    )
+    set_state(
+        "p04-gigabit",
+        "requirement",
+        "key_constraints",
+        "The program targets a 1.2 m lightweight Zerodur mirror with filtered mechanical WFE below 15 nm "
+        "and mass below 103.5 kg.",
+    )
+
+    pack = build_context(
+        "what are the key GigaBIT M1 program constraints",
+        project_hint="p04-gigabit",
+        budget=3000,
+    )
+
+    assert "Zerodur" in pack.formatted_context
+    assert "1.2" in pack.formatted_context
+    assert pack.formatted_context.find("[REQUIREMENT]") < pack.formatted_context.find("[CONTACT]")
+
+
 def test_project_hint_matches_state_case_insensitively(tmp_data_dir, sample_markdown):
     """Project state lookup should not depend on exact casing."""
     init_db()