fix(opencode-plugin): stop warning when an auto combo replaces its expected /v1/models twin (#8983) (#9042)

* test(opencode): cover expected auto-combo twin

* fix(opencode): suppress expected auto-combo twin warning

---------

Co-authored-by: 千乘妍 (Xiaoyaner) <xiaoyaner0201@users.noreply.github.com>
Co-authored-by: diegosouzapw <8016841+diegosouzapw@users.noreply.github.com>

@omniroute/opencode-plugin/src/index.ts

@@ -4256,6 +4256,7 @@ export function buildStaticProviderEntry(
   rawAutoCombos?: OmniRouteRawAutoCombo[]
 ): OmniRouteStaticProviderEntry {
   const models: Record<string, OmniRouteStaticModelEntry> = {};
+  const rawModelKeys = new Set<string>();
 
   // usableOnly filter — compute once when feature enabled AND we have
   // connection data to filter against. Soft-fail (empty connections list)
@@ -4412,7 +4413,9 @@ export function buildStaticProviderEntry(
     // provider prefix (`<providerId>/<raw-id>`) is unreachable. Keys are the
     // raw id verbatim; ids that already contain `/` (e.g. `cc/claude-opus-4-7`)
     // keep it because the slash is part of the upstream model id itself.
-    models[raw.id] = entry;
+    const key = raw.id;
+    models[key] = entry;
+    rawModelKeys.add(key);
   }
 
   // Combo entries → stripped LCD shape. Each combo is keyed as
@@ -4609,8 +4612,9 @@ export function buildStaticProviderEntry(
       // (`opencode-omniroute/opencode-omniroute/<slug>`), and `parseModel()`
       // resolves credentials for the nonexistent provider `opencode-omniroute`
       // instead of `omniroute`. See #7976.
-      models[buildComboKey(combo, usedComboKeys, opts.omnirouteProviderId).split("/").pop()!] =
-        entry;
+      const key = buildComboKey(combo, usedComboKeys, opts.omnirouteProviderId).split("/").pop()!;
+      models[key] = entry;
+      rawModelKeys.delete(key);
 
       // Make this combo's resolved entry available to parent combos
       // that reference it via combo-ref. Use the friendly name since
@@ -4645,8 +4649,10 @@ export function buildStaticProviderEntry(
       // Use the variant as the key: "auto", "auto/coding", etc.
       const key = autoComboModelId(autoCombo.variant);
       if (models[key]) {
-        // Collision with a raw model or DB combo — auto combo wins (log once)
-        if (!reportedCollisions.has(key)) {
+        // `/v1/models` mirrors auto combos under the same stable id. Replacing
+        // that expected raw twin is silent; every other collision still warns.
+        const isExpectedRawTwin = autoCombo.id === key && rawModelKeys.has(key);
+        if (!isExpectedRawTwin && !reportedCollisions.has(key)) {
           reportedCollisions.add(key);
           console.warn(
             `[omniroute-plugin] auto combo key "${key}" collides with an existing model; auto combo wins.`
@@ -4654,6 +4660,7 @@ export function buildStaticProviderEntry(
         }
       }
       models[key] = entry;
+      rawModelKeys.delete(key);
     }
   }
 

@omniroute/opencode-plugin/tests/config-shim.test.ts

@@ -763,6 +763,37 @@ test("buildStaticProviderEntry: hidden combos are excluded", () => {
   assert.ok(block.models["claude-sonnet-4-6"]);
 });
 
+test("buildStaticProviderEntry: expected raw auto twin does not warn and auto combo wins", () => {
+  const resolved = resolveOmniRoutePluginOptions({ providerId: "omniroute" });
+  const warnings: string[] = [];
+  const originalWarn = console.warn;
+  console.warn = (...args: unknown[]) => warnings.push(args.map(String).join(" "));
+
+  let block: OmniRouteStaticProviderEntry;
+  try {
+    block = buildStaticProviderEntry(
+      [{ id: "auto/coding" }],
+      [],
+      resolved,
+      "https://or.example/v1",
+      "sk-test",
+      undefined,
+      undefined,
+      undefined,
+      [{ id: "auto/coding", name: "Auto Coding", variant: "coding", candidateCount: 5 }]
+    );
+  } finally {
+    console.warn = originalWarn;
+  }
+
+  assert.equal(Object.keys(block.models).filter((key) => key === "auto/coding").length, 1);
+  assert.equal(block.models["auto/coding"].tool_call, true, "auto-combo entry wins over raw twin");
+  assert.deepEqual(
+    warnings.filter((warning) => warning.includes("collides with an existing model")),
+    []
+  );
+});
+
 // ────────────────────────────────────────────────────────────────────────────
 // Schema parity (modalities / cost / release_date / limit cleanup)
 // ────────────────────────────────────────────────────────────────────────────