Render opencode Edit tool calls as diffs

opencode's Edit tool sends camelCase input keys (filePath, oldString,
newString) and a plain-string success ack on output. The shared edit
schemas expect snake_case input and an object output, so calls fell
through to the generic "unknown" renderer (raw JSON Input/Output).

Normalize both at the opencode boundary so the quirk does not leak into
the cross-provider schema.

packages/server/src/server/agent/providers/opencode/tool-call-detail-parser.ts

@@ -219,6 +219,25 @@ function deriveOpencodeTaskDetail(
   };
 }
 
+const OpencodeEditInputSchema = z.union([
+  z
+    .object({
+      filePath: z.string(),
+      oldString: z.string().optional(),
+      newString: z.string().optional(),
+    })
+    .passthrough()
+    .transform((value) => ({
+      filePath: value.filePath,
+      oldString: nonEmptyString(value.oldString),
+      newString: nonEmptyString(value.newString),
+      unifiedDiff: undefined,
+    })),
+  ToolEditInputSchema,
+]);
+
+const OpencodeEditOutputSchema = z.union([z.string().transform(() => null), ToolEditOutputSchema]);
+
 const OpencodeKnownToolDetailSchema = z.union([
   toolDetailBranchByToolName(
     "shell",
@@ -264,11 +283,16 @@ const OpencodeKnownToolDetailSchema = z.union([
     ToolWriteOutputSchema,
     toWriteToolDetail,
   ),
-  toolDetailBranchByToolName("edit", ToolEditInputSchema, ToolEditOutputSchema, toEditToolDetail),
+  toolDetailBranchByToolName(
+    "edit",
+    OpencodeEditInputSchema,
+    OpencodeEditOutputSchema,
+    toEditToolDetail,
+  ),
   toolDetailBranchByToolName(
     "apply_patch",
-    ToolEditInputSchema,
+    OpencodeEditInputSchema,
-    ToolEditOutputSchema,
+    OpencodeEditOutputSchema,
     toEditToolDetail,
   ),
   toolDetailBranchByToolName(
@@ -279,8 +303,8 @@ const OpencodeKnownToolDetailSchema = z.union([
   ),
   toolDetailBranchByToolName(
     "apply_diff",
-    ToolEditInputSchema,
+    OpencodeEditInputSchema,
-    ToolEditOutputSchema,
+    OpencodeEditOutputSchema,
     toEditToolDetail,
   ),
   toolDetailBranchByToolName("search", ToolSearchInputSchema, z.unknown(), (input) =>

packages/server/src/server/agent/providers/opencode/tool-call-mapper.test.ts

@@ -296,6 +296,29 @@ describe("opencode tool-call mapper", () => {
     });
   });
 
+  it("maps completed edit calls with OpenCode camelCase input and success text", () => {
+    const item = expectMapped(
+      mapOpencodeToolCall({
+        toolName: "edit",
+        callId: "opencode-edit-camel",
+        status: "completed",
+        input: {
+          filePath: "/Users/moboudra/dev/paseo/packages/website/src/data/agent-pages.ts",
+          oldString: 'metaTitle: "Junie agent Mobile and Desktop App, Open Source"',
+          newString: 'metaTitle: "Junie Agent Mobile and Desktop App, Open Source"',
+        },
+        output: "Edit applied successfully.",
+      }),
+    );
+
+    expect(item.detail).toEqual({
+      type: "edit",
+      filePath: "/Users/moboudra/dev/paseo/packages/website/src/data/agent-pages.ts",
+      oldString: 'metaTitle: "Junie agent Mobile and Desktop App, Open Source"',
+      newString: 'metaTitle: "Junie Agent Mobile and Desktop App, Open Source"',
+    });
+  });
+
   it("maps skill calls to plain text detail with the loaded skill name", () => {
     const item = expectMapped(
       mapOpencodeToolCall({