* chore: remove dead non-ACP provider client packages
Delete five Go packages under apps/backend/pkg/ that were unreachable
from any binary: amp, codex, claudecode, copilot, opencode. These were
the client libraries for legacy non-ACP agent implementations removed in
a5b54b53 — that commit deleted the callers but missed the client libraries.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* chore: drop orphaned copilot-sdk dep and stale architecture doc
go mod tidy removes github.com/github/copilot-sdk/go v0.1.18 and its
transitive dep github.com/google/jsonschema-go v0.4.2; both were only
imported by the deleted pkg/copilot/client.go.
Delete docs/agents/claude_code.md: it describes the pre-ACP streamjson
transport and pkg/claudecode/ package. Every source file it references
has been removed (pkg/claudecode/ in this PR; streamjson/ and
agents/claude_code.go in a5b54b53).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---------
Co-authored-by: Kandev Agent <agent@kandev.dev>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
João Salavisa
2cb3f4a384