Fix tool call ID normalization for cross-provider switches to Anthropic/GitHub Copilot

Dockerfile.gh-build

@@ -0,0 +1,21 @@
+FROM ubuntu:24.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update \
+  && apt-get install -y curl unzip git xz-utils ca-certificates \
+  && curl -fsSL https://deb.nodesource.com/setup_22.x | bash - \
+  && apt-get install -y nodejs \
+  && BUN_VERSION=1.2.20 \
+  && ARCH=$(dpkg --print-architecture) \
+  && if [ "$ARCH" = "amd64" ]; then BUN_ARCH="linux-x64"; else BUN_ARCH="linux-aarch64"; fi \
+  && curl -fsSL "https://github.com/oven-sh/bun/releases/download/bun-v${BUN_VERSION}/bun-${BUN_ARCH}.zip" -o /tmp/bun.zip \
+  && unzip /tmp/bun.zip -d /tmp \
+  && mv /tmp/bun-${BUN_ARCH}/bun /usr/local/bin/bun \
+  && chmod +x /usr/local/bin/bun \
+  && rm -rf /tmp/bun.zip /tmp/bun-linux-x64 \
+  && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /repo
+
+ENTRYPOINT ["/bin/bash", "-lc"]

packages/ai/src/providers/transform-messages.ts

@@ -1,11 +1,11 @@
 import type { Api, AssistantMessage, Message, Model, ToolCall, ToolResultMessage } from "../types.js";
 
 /**
- * Normalize tool call ID for GitHub Copilot cross-API compatibility.
+ * Normalize tool call ID for cross-provider compatibility.
  * OpenAI Responses API generates IDs that are 450+ chars with special characters like `|`.
- * Other APIs (Claude, etc.) require max 40 chars and only alphanumeric + underscore + hyphen.
+ * Anthropic APIs require IDs matching ^[a-zA-Z0-9_-]+$ (max 64 chars).
  */
-function normalizeCopilotToolCallId(id: string): string {
+function normalizeToolCallId(id: string): string {
 	return id.replace(/[^a-zA-Z0-9_-]/g, "").slice(0, 40);
 }
 
@@ -38,11 +38,17 @@ export function transformMessages<TApi extends Api>(messages: Message[], model:
 				return msg;
 			}
 
-			// Check if we need to normalize tool call IDs (github-copilot cross-API)
+			// Check if we need to normalize tool call IDs
-			const needsToolCallIdNormalization =
+			// Anthropic APIs require IDs matching ^[a-zA-Z0-9_-]+$ (max 64 chars)
+			// OpenAI Responses API generates IDs with `|` and 450+ chars
+			// GitHub Copilot routes to Anthropic for Claude models
+			const targetRequiresStrictIds = model.api === "anthropic-messages" || model.provider === "github-copilot";
+			const crossProviderSwitch = assistantMsg.provider !== model.provider;
+			const copilotCrossApiSwitch =
 				assistantMsg.provider === "github-copilot" &&
 				model.provider === "github-copilot" &&
 				assistantMsg.api !== model.api;
+			const needsToolCallIdNormalization = targetRequiresStrictIds && (crossProviderSwitch || copilotCrossApiSwitch);
 
 			// Transform message from different provider/model
 			const transformedContent = assistantMsg.content.flatMap((block) => {
@@ -54,10 +60,10 @@ export function transformMessages<TApi extends Api>(messages: Message[], model:
 						text: block.thinking,
 					};
 				}
-				// Normalize tool call IDs for github-copilot cross-API switches
+				// Normalize tool call IDs when target API requires strict format
 				if (block.type === "toolCall" && needsToolCallIdNormalization) {
 					const toolCall = block as ToolCall;
-					const normalizedId = normalizeCopilotToolCallId(toolCall.id);
+					const normalizedId = normalizeToolCallId(toolCall.id);
 					if (normalizedId !== toolCall.id) {
 						toolCallIdMap.set(toolCall.id, normalizedId);
 						return { ...toolCall, id: normalizedId };

packages/coding-agent/.gitignore

@@ -0,0 +1 @@
+*.bun-build

packages/coding-agent/src/core/extensions/loader.ts

@@ -33,6 +33,12 @@ function getAliases(): Record<string, string> {
 	const __dirname = path.dirname(fileURLToPath(import.meta.url));
 	const packageIndex = path.resolve(__dirname, "../..", "index.js");
 
+	// Debug: log what we're resolving
+	if (process.env.DEBUG_EXTENSIONS) {
+		console.error("[DEBUG] import.meta.url:", import.meta.url);
+		console.error("[DEBUG] __dirname:", __dirname);
+	}
+
 	const typeboxEntry = require.resolve("@sinclair/typebox");
 	const typeboxRoot = typeboxEntry.replace(/\/build\/cjs\/index\.js$/, "");
 
@@ -43,6 +49,11 @@ function getAliases(): Record<string, string> {
 		"@mariozechner/pi-ai": require.resolve("@mariozechner/pi-ai"),
 		"@sinclair/typebox": typeboxRoot,
 	};
+
+	if (process.env.DEBUG_EXTENSIONS) {
+		console.error("[DEBUG] aliases:", JSON.stringify(_aliases, null, 2));
+	}
+
 	return _aliases;
 }
 

scripts/gh-build-docker.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+set -euo pipefail
+
+echo "=== Versions ==="
+node --version
+bun --version
+npm --version
+
+echo "=== Install dependencies ==="
+npm ci
+
+echo "=== Install cross-platform bindings ==="
+npm install --no-save --force \
+  @mariozechner/clipboard-darwin-arm64@0.3.0 \
+  @mariozechner/clipboard-darwin-x64@0.3.0 \
+  @mariozechner/clipboard-linux-x64-gnu@0.3.0 \
+  @mariozechner/clipboard-linux-arm64-gnu@0.3.0 \
+  @mariozechner/clipboard-win32-x64-msvc@0.3.0
+
+npm install --no-save --force \
+  @img/sharp-darwin-arm64@0.34.5 \
+  @img/sharp-darwin-x64@0.34.5 \
+  @img/sharp-linux-x64@0.34.5 \
+  @img/sharp-linux-arm64@0.34.5 \
+  @img/sharp-win32-x64@0.34.5 \
+  @img/sharp-libvips-darwin-arm64@1.2.4 \
+  @img/sharp-libvips-darwin-x64@1.2.4 \
+  @img/sharp-libvips-linux-x64@1.2.4 \
+  @img/sharp-libvips-linux-arm64@1.2.4
+
+echo "=== Build all packages ==="
+npm run build
+
+echo "=== Build darwin-arm64 binary ==="
+mkdir -p /repo/.tmp
+cd packages/coding-agent
+bun build --compile --target=bun-darwin-arm64 ./dist/cli.js --outfile /repo/.tmp/pi-darwin-arm64
+
+echo "=== Done ==="
+ls -la /repo/.tmp/pi-darwin-arm64

scripts/test-gh-build.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+set -e
+
+# Simulate GH Actions build locally
+
+cd /Users/badlogic/workspaces/pi-mono
+
+echo "=== Cleaning node_modules ==="
+rm -rf node_modules packages/*/node_modules
+
+echo "=== npm ci ==="
+npm ci
+
+echo "=== Install cross-platform bindings (like GH Actions) ==="
+npm install --no-save --force \
+  @mariozechner/clipboard-darwin-arm64@0.3.0 \
+  @mariozechner/clipboard-darwin-x64@0.3.0 \
+  @mariozechner/clipboard-linux-x64-gnu@0.3.0 \
+  @mariozechner/clipboard-linux-arm64-gnu@0.3.0 \
+  @mariozechner/clipboard-win32-x64-msvc@0.3.0
+
+npm install --no-save --force \
+  @img/sharp-darwin-arm64@0.34.5 \
+  @img/sharp-darwin-x64@0.34.5 \
+  @img/sharp-linux-x64@0.34.5 \
+  @img/sharp-linux-arm64@0.34.5 \
+  @img/sharp-win32-x64@0.34.5 \
+  @img/sharp-libvips-darwin-arm64@1.2.4 \
+  @img/sharp-libvips-darwin-x64@1.2.4 \
+  @img/sharp-libvips-linux-x64@1.2.4 \
+  @img/sharp-libvips-linux-arm64@1.2.4
+
+echo "=== Build all packages ==="
+npm run build
+
+echo "=== Build binary with cross-compile flag ==="
+cd packages/coding-agent
+bun build --compile --target=bun-darwin-arm64 ./dist/cli.js --outfile /tmp/pi-gh-sim/pi
+cp package.json /tmp/pi-gh-sim/
+
+echo "=== Test the binary ==="
+/tmp/pi-gh-sim/pi -e /Users/badlogic/workspaces/pi-doom --help 2>&1 | head -5
+
+echo "=== Binary size ==="
+ls -la /tmp/pi-gh-sim/pi