fix: preserve DeepSeek max effort on Databricks

Justfile

@@ -335,7 +335,7 @@ test-unit:
         # buzz-agent model-capabilities corpus: the Rust half of the
         # cross-language drift guard. `model_capabilities.rs` embeds
         # scripts/model-capabilities.json + scripts/normative-corpus.json via
-        # include_str! and replays all 103 vectors as pure in-process tests (no
+        # include_str! and replays all 104 vectors as pure in-process tests (no
         # infra). Enumerated explicitly because nothing in CI runs
         # `cargo test --workspace`; without this step a manifest edit that
         # diverges Rust from the corpus ships green.

crates/buzz-agent/src/model_capabilities.rs

@@ -608,6 +608,7 @@ mod tests {
     Q::Vector { id: "anthropic-opus-5-prefix-probe", provider: "anthropic", raw_model_id: "claude-opus-5-20270101", note: Some("Probes the claude-opus-5 prefix rule.") },
     Q::Vector { id: "dbv2-gpt-5-6-sol-normalization-probe", provider: "databricks_v2", raw_model_id: "databricks-gpt-5-6-sol", note: Some("Probes the sol exact record's normalization and effort axes.") },
     Q::Vector { id: "dbv2-gpt-5-6-luna-exact-record-probe", provider: "databricks_v2", raw_model_id: "databricks-gpt-5-6-luna", note: Some("Probes the luna exact record against its family rule.") },
+    Q::Vector { id: "dbv2-deepseek-v4-flash-max-probe", provider: "databricks_v2", raw_model_id: "databricks-deepseek-v4-flash-0731", note: Some("Probes that the validated DeepSeek endpoint preserves max instead of inheriting the concrete-unknown max-to-xhigh clamp.") },
     Q::Vector { id: "dbv2-gpt-5-6-terra-exact-record-probe", provider: "databricks_v2", raw_model_id: "databricks-gpt-5-6-terra", note: Some("Probes the terra exact record against its family rule.") },
     Q::Vector { id: "dbv2-gpt-5-4-nano-exact-record-probe", provider: "databricks_v2", raw_model_id: "databricks-gpt-5-4-nano", note: Some("Probes the gpt-5-4-nano exact record and its label.") },
     Q::Vector { id: "openrouter-concrete-unknown-probe", provider: "openrouter", raw_model_id: "some-model-xyz", note: Some("Probes an uncatalogued openrouter model id.") },
@@ -746,7 +747,7 @@ mod tests {
     }
 
     #[test]
-    fn corpus_has_exactly_103_executable_vectors() {
+    fn corpus_has_exactly_104_executable_vectors() {
         // Locks the vector count so a silent INPUTS edit can't quietly drop
         // coverage; must equal the gate in the TS harness
         // (modelCapabilitiesCorpus.test.mjs).
@@ -755,7 +756,7 @@ mod tests {
             .filter(|q| matches!(q, Q::Vector { .. }))
             .count();
         assert_eq!(
-            vectors, 103,
+            vectors, 104,
             "corpus executable-vector count changed; update this gate deliberately"
         );
     }

desktop/src/features/agents/ui/modelCapabilitiesCorpus.test.mjs

@@ -23,10 +23,10 @@ const corpus = JSON.parse(readFileSync(fileURLToPath(corpusUrl), "utf8"));
 // (`_group`) are skipped. Mirrors the Rust corpus filter.
 const executable = corpus.filter((entry) => entry.expect != null);
 
-test("corpus has exactly 103 executable vectors", () => {
+test("corpus has exactly 104 executable vectors", () => {
   // Locks the vector count so a silent corpus edit can't quietly drop coverage;
   // must equal the gate in the Rust suite (model_capabilities.rs).
-  assert.equal(executable.length, 103);
+  assert.equal(executable.length, 104);
 });
 
 test("every executable corpus vector resolves to its expected six-axis profile", () => {

scripts/model-capabilities.json

@@ -392,12 +392,32 @@
       "normalization_policy": "none"
     }
   ],
-  "_comment_databricks_v2_known_models": "Curated fallback catalog for Databricks v2: the model IDs offered when an authenticated api/ai-gateway/v2/endpoints call succeeds but returns an empty list (see catalog.rs authenticated_empty_v2_catalog). Both IDs also have full exact_records, so once offered they classify precisely. Uniqueness enforced by validate_manifest().",
+  "_comment_databricks_v2_known_models": "Curated fallback catalog for Databricks v2: the model IDs offered when an authenticated api/ai-gateway/v2/endpoints call succeeds but returns an empty list (see catalog.rs authenticated_empty_v2_catalog). Every ID also has a full exact_record, so once offered it classifies precisely. Uniqueness enforced by validate_manifest().",
   "databricks_v2_known_models": [
     "databricks-gpt-5-5",
-    "databricks-claude-opus-4-7"
+    "databricks-claude-opus-4-7",
+    "databricks-deepseek-v4-flash-0731"
   ],
   "exact_records": [
+    {
+      "provider": "databricks_v2",
+      "raw_model_id": "databricks-deepseek-v4-flash-0731",
+      "registry_label": "DeepSeek V4 Flash 0731",
+      "thinking_mode": "none",
+      "supported_efforts": [
+        "low",
+        "high",
+        "max"
+      ],
+      "default_effort": "high",
+      "databricks_v2_wire_route": "mlflow-chat",
+      "normalization_policy": "openai-standard",
+      "_provenance": "live Databricks staging endpoint validation plus provider-advertised effort set",
+      "source": "Direct staging invocation with reasoning_effort=max returned HTTP 200 and reasoning content on 2026-08-18; model metadata advertises low|high|max",
+      "_reconciliation": "adopt",
+      "_reconciliation_note": "The concrete-unknown DatabricksV2 fallback clamps max to xhigh. This endpoint accepts max, so an exact record is required to preserve the requested leaderboard condition.",
+      "_reconciliation_doc": "Live POST /serving-endpoints/databricks-deepseek-v4-flash-0731/invocations on 2026-08-18 with reasoning_effort=max"
+    },
     {
       "provider": "databricks_v2",
       "raw_model_id": "databricks-gpt-5-4-mini",

scripts/normative-corpus.json

@@ -1312,6 +1312,24 @@
       "registry_label": "GPT-5.6 Luna"
     }
   },
+  {
+    "id": "dbv2-deepseek-v4-flash-max-probe",
+    "provider": "databricks_v2",
+    "raw_model_id": "databricks-deepseek-v4-flash-0731",
+    "_note": "Probes that the validated DeepSeek endpoint preserves max instead of inheriting the concrete-unknown max-to-xhigh clamp.",
+    "expect": {
+      "thinking_mode": "none",
+      "supported_efforts": [
+        "low",
+        "high",
+        "max"
+      ],
+      "default_effort": "high",
+      "databricks_v2_wire_route": "mlflow-chat",
+      "normalization_policy": "openai-standard",
+      "registry_label": "DeepSeek V4 Flash 0731"
+    }
+  },
   {
     "id": "dbv2-gpt-5-6-terra-exact-record-probe",
     "provider": "databricks_v2",

scripts/run-tests.sh

@@ -115,7 +115,7 @@ run_unit_tests() {
 
   # buzz-agent model-capabilities corpus: the Rust half of the cross-language
   # drift guard. model_capabilities.rs embeds scripts/model-capabilities.json +
-  # scripts/normative-corpus.json via include_str! and replays all 103 vectors
+  # scripts/normative-corpus.json via include_str! and replays all 104 vectors
   # as pure in-process tests (no infra). Mirrors the nextest path in
   # `just test-unit` — the two lists must stay in step.
   run_test_step "buzz-agent unit tests" \