move pi-mono into companion-cloud as apps/companion-os

- Copy all pi-mono source into apps/companion-os/
- Update Dockerfile to COPY pre-built binary instead of downloading from GitHub Releases
- Update deploy-staging.yml to build pi from source (bun compile) before Docker build
- Add apps/companion-os/** to path triggers
- No more cross-repo dispatch needed

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/web-ui/src/tools/renderers/CalculateRenderer.ts

@@ -0,0 +1,89 @@
+import type { ToolResultMessage } from "@mariozechner/pi-ai";
+import { html } from "lit";
+import { Calculator } from "lucide";
+import { i18n } from "../../utils/i18n.js";
+import { renderHeader } from "../renderer-registry.js";
+import type { ToolRenderer, ToolRenderResult } from "../types.js";
+
+interface CalculateParams {
+  expression: string;
+}
+
+// Calculate tool has undefined details (only uses output)
+export class CalculateRenderer implements ToolRenderer<
+  CalculateParams,
+  undefined
+> {
+  render(
+    params: CalculateParams | undefined,
+    result: ToolResultMessage<undefined> | undefined,
+  ): ToolRenderResult {
+    const state = result
+      ? result.isError
+        ? "error"
+        : "complete"
+      : "inprogress";
+
+    // Full params + full result
+    if (result && params?.expression) {
+      const output =
+        result.content
+          ?.filter((c) => c.type === "text")
+          .map((c: any) => c.text)
+          .join("\n") || "";
+
+      // Error: show expression in header, error below
+      if (result.isError) {
+        return {
+          content: html`
+            <div class="space-y-3">
+              ${renderHeader(state, Calculator, params.expression)}
+              <div class="text-sm text-destructive">${output}</div>
+            </div>
+          `,
+          isCustom: false,
+        };
+      }
+
+      // Success: show expression = result in header
+      return {
+        content: renderHeader(
+          state,
+          Calculator,
+          `${params.expression} = ${output}`,
+        ),
+        isCustom: false,
+      };
+    }
+
+    // Full params, no result: just show header with expression in it
+    if (params?.expression) {
+      return {
+        content: renderHeader(
+          state,
+          Calculator,
+          `${i18n("Calculating")} ${params.expression}`,
+        ),
+        isCustom: false,
+      };
+    }
+
+    // Partial params (empty expression), no result
+    if (params && !params.expression) {
+      return {
+        content: renderHeader(state, Calculator, i18n("Writing expression...")),
+        isCustom: false,
+      };
+    }
+
+    // No params, no result
+    return {
+      content: renderHeader(
+        state,
+        Calculator,
+        i18n("Waiting for expression..."),
+      ),
+      isCustom: false,
+    };
+  }
+}