v1.43.0: automatic MCP GitHub resolver agent plus stdlib-only OAuth login
- mcp_resolve_agent: bounded fork subagent fallback when the
deterministic GitHub pass finds no run contract (MCP_RESOLVER_*).
- McpOAuth/McpOAuthCallback: discovery, DCR, PKCE loopback, token
exchange, sealed per-profile token storage, one-shot refresh.
- McpHttpError carries status plus WWW-Authenticate through the
client; bridge retries once after refresh, else names mcp_login.
- mcp_add stores 401-gated servers disabled; mcp_login approves,
verifies, enables; mcp_remove drops tokens.
- Docs, conclusions, 17 new tests (1209 + 16 green).
retoor
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