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f94752762b
Implement the full Devin/Cognition Connect-RPC provider support across all CPA endpoints (/v1/chat/completions, /v1/messages, /v1/responses), complete with binary protobuf wire framing, streaming tools/arguments delta handling, thinking/reasoning replay, and CLI OAuth authentication. Key highlights: - Wire Protocol & Streaming: * Implemented Connect-RPC uncompressed 5-byte framing (0x00 + 4-byte length + protobuf) for ApiServerService/GetChatMessage. * Implemented Devin protobuf encoder/decoder in internal/runtime/executor/helps/devin_wire.go, including ClientMetadata, prompts, tools, completion_config, and multimodal image handling (Prompt Field #10). * Stream frame consumption via interactions protocol, correctly mapping arguments_delta and tracking multiple sequential tool calls (currentToolCallActive). * Streaming thought summary and sealed.v1 signature deltas targeting the thinking step. - Model Registration & Thinking Clamping: * Registered static fallback models in model_definitions.go (swe-2, claude-fable-5-1, gpt-6-astra, swe-1-7-lightning, glm-5-2, glm-5-3). * Configured ThinkingSupport with discrete levels per model family. * Implemented CPA-standard nearest-neighbor clamping for thinking levels (minimal/low -> medium, xhigh -> max for swe-2). * Mapped thinking effort to Devin upstream model UID (e.g. swe-2-medium, swe-2-high, swe-2-max). - Sensitive Words & System Prompt Sanitization: * Added devin.sensitive-words configuration in internal/config/config_types.go and config.go, matching Antigravity conventions. * Supported zero-width space (\u200b) obfuscation in prompts, tools, and system instructions via SensitiveWordMatcher. * Stripped Claude Code billing headers (x-anthropic-billing-header:) and CLI identity signatures from system instructions and tool descriptions to avoid upstream content filter rejections. - Signature Compatibility: * Added SignatureProviderSWE = "swe" recognizing sealed.v1.* reasoning signatures in internal/signature/provider_compatibility.go. * Propagated reasoning.encrypted_content on Responses API and thinking.signature on Messages API. - Authentication: * Implemented Devin PKCE OAuth flow with loopback callback server and headless manual token/code paste (--no-browser). * Registered Devin authenticator in SDK and CLI (-devin-login flag). * Integrated with management OAuth session endpoints and credentials manager.