WIP: Save agent roles integration work before CHORUS rebrand

- Agent roles and coordination features
- Chat API integration testing
- New configuration and workspace management

🤖 Generated with [Claude Code](https://claude.ai/code)

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

vendor/github.com/ipfs/go-cid/varint.go

@@ -0,0 +1,37 @@
+package cid
+
+import (
+	"github.com/multiformats/go-varint"
+)
+
+// Version of varint function that works with a string rather than
+// []byte to avoid unnecessary allocation
+
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license as given at https://golang.org/LICENSE
+
+// uvarint decodes a uint64 from buf and returns that value and the
+// number of bytes read (> 0). If an error occurred, then 0 is
+// returned for both the value and the number of bytes read, and an
+// error is returned.
+func uvarint(buf string) (uint64, int, error) {
+	var x uint64
+	var s uint
+	// we have a binary string so we can't use a range loop
+	for i := 0; i < len(buf); i++ {
+		b := buf[i]
+		if b < 0x80 {
+			if i > 9 || i == 9 && b > 1 {
+				return 0, 0, varint.ErrOverflow
+			}
+			if b == 0 && i > 0 {
+				return 0, 0, varint.ErrNotMinimal
+			}
+			return x | uint64(b)<<s, i + 1, nil
+		}
+		x |= uint64(b&0x7f) << s
+		s += 7
+	}
+	return 0, 0, varint.ErrUnderflow
+}