fix: rename format parameter to avoid JSON Schema keyword conflict

- Rename `format` to `snapshotFormat` in browser-tool schema and implementation
- Rename `format` to `outputFormat` in canvas-tool schema and implementation
- The parameter name `format` conflicts with JSON Schema keyword, causing
  Google Cloud Code Assist to reject the schema as invalid

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/agents/pi-tools.create-clawdbot-coding-tools.adds-claude-style-aliases-schemas-without-dropping-a.test.ts

@@ -129,16 +129,16 @@ describe("createClawdbotCodingTools", () => {
     expect(Array.isArray(action?.enum)).toBe(true);
     expect(action?.enum).toContain("act");
 
-    const format = parameters.properties?.format as
+    const snapshotFormat = parameters.properties?.snapshotFormat as
       | {
           type?: unknown;
           enum?: unknown[];
           anyOf?: unknown[];
         }
       | undefined;
-    expect(format?.type).toBe("string");
-    expect(format?.anyOf).toBeUndefined();
-    expect(format?.enum).toEqual(["aria", "ai"]);
+    expect(snapshotFormat?.type).toBe("string");
+    expect(snapshotFormat?.anyOf).toBeUndefined();
+    expect(snapshotFormat?.enum).toEqual(["aria", "ai"]);
   });
   it("inlines local $ref before removing unsupported keywords", () => {
     const cleaned = __testing.cleanToolSchemaForGemini({

src/agents/tools/browser-tool.schema.ts

@@ -91,7 +91,7 @@ export const BrowserToolSchema = Type.Object({
   limit: Type.Optional(Type.Number()),
   maxChars: Type.Optional(Type.Number()),
   mode: optionalStringEnum(BROWSER_SNAPSHOT_MODES),
-  format: optionalStringEnum(BROWSER_SNAPSHOT_FORMATS),
+  snapshotFormat: optionalStringEnum(BROWSER_SNAPSHOT_FORMATS),
   refs: optionalStringEnum(BROWSER_SNAPSHOT_REFS),
   interactive: Type.Optional(Type.Boolean()),
   compact: Type.Optional(Type.Boolean()),

src/agents/tools/browser-tool.ts

@@ -191,8 +191,8 @@ export function createBrowserTool(opts?: {
         }
         case "snapshot": {
           const format =
-            params.format === "ai" || params.format === "aria"
-              ? (params.format as "ai" | "aria")
+            params.snapshotFormat === "ai" || params.snapshotFormat === "aria"
+              ? (params.snapshotFormat as "ai" | "aria")
               : "ai";
           const mode = params.mode === "efficient" ? "efficient" : undefined;
           const labels = typeof params.labels === "boolean" ? params.labels : undefined;

src/agents/tools/canvas-tool.ts

@@ -40,7 +40,7 @@ const CanvasToolSchema = Type.Object({
   // eval
   javaScript: Type.Optional(Type.String()),
   // snapshot
-  format: optionalStringEnum(CANVAS_SNAPSHOT_FORMATS),
+  outputFormat: optionalStringEnum(CANVAS_SNAPSHOT_FORMATS),
   maxWidth: Type.Optional(Type.Number()),
   quality: Type.Optional(Type.Number()),
   delayMs: Type.Optional(Type.Number()),
@@ -127,7 +127,7 @@ export function createCanvasTool(): AnyAgentTool {
           return jsonResult({ ok: true });
         }
         case "snapshot": {
-          const formatRaw = typeof params.format === "string" ? params.format.toLowerCase() : "png";
+          const formatRaw = typeof params.outputFormat === "string" ? params.outputFormat.toLowerCase() : "png";
           const format = formatRaw === "jpg" || formatRaw === "jpeg" ? "jpeg" : "png";
           const maxWidth =
             typeof params.maxWidth === "number" && Number.isFinite(params.maxWidth)