bbkdevops / gemma-4-developer-agent

🚀 Gemma 4 Autonomous Developer Agent (CIGS-Delta SOTA)

Official release repository for the Gemma 4 Developer Agent Competition , featuring the CIGS-$\Delta$ (Causal Information-Gain Search) reasoning kernel, Google ADK skill toolsets, and multi-repo software engineering playbooks.

📋 Provenance & Specifications

• Competition : Google Gemma 4 Developer Agent Competition (SWE-Bench Evaluation)
• Base Model Architecture : google/gemma-4-31b-it-qat-w4a16-ct
• Compiler Compatibility : Fully validated with dk-submission & swegemma
• Sampling Profile :

  • emperature: 0.0 (Deterministic greedy decoding)
    

  • hinking_budget: 8,192 tokens
    

  • max_output_tokens: 16,384 tokens
• Artifact SHA-256 : 504782898bd64cb356b75f0d0005f575560e98d6fcad97c7586e80d20b2e6b32
• Package Size : 22,981 bytes (< 3 GiB limit)

🛠️ Architecture: CIGS-$\Delta$ Reasoning Kernel

The agent employs a 4-phase invariant reasoning loop:

1. Phase 1: Multi-Repository AST & Symbol Reconnaissance (code_analyzer, cigs-search, astapi-nav)
2. Phase 2: Hypothesis-Driven Root Cause Identification (deep-reasoning)
3. Phase 3: Surgical Minimal Patch Synthesis (swe-tactics, zero file pollution)
4. Phase 4: Empirical Invariant Verification (pytest reproduction and validation inside pristine container sandbox)

📦 ADK Compliant Skills Included

• cigs-search: Causal Information-Gain Search for semantic code navigation
• deep-reasoning: Formal multi-hop reasoning and root cause deduction
• astapi-nav: Repository navigation and middleware tracing for FastAPI / Starlette
• httpx-internals: Protocol-level transport and client execution tracing
• equests-internals: HTTP adapter and session lifecycle debugging
• ich-rendering: Terminal layout, segment styling, and ANSI stream diagnosis
• swe-tactics: SOTA software engineering tactical patterns and git hygiene