Chains from 2026-04-18-canonical-tooling-research. Captures the
settings-guide work shipped in d9477da and the repo-convention
note (push-on-commit for ~/bin Gitea projects).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Patches the top-level corpus docs with the 13 findings flagged during the
2026-04-18 canonical tooling research pass. tooling/README.md now marks each
finding [merged: <file>] or [flagged] for provenance.
- CORPUS_ollama_variants.md: annotate gemma4:26b as MoE (25.2B total / 3.8B
active, 8-of-128 experts + 1 shared). Note Q4_K_M inference is standard
(the "MoE quality degrades at 4-bit" caveat is training-only). Add note
that audio on E-series is NOT available via Ollama — llama.cpp mmproj
or vLLM only.
- CORPUS_capabilities.md: native system role, configurable thinking mode,
first trained tool use (vs Gemma 1/2/3 proof-of-concept), native object
detection with bbox output in 1000x1000 coords, pointer to EmbeddingGemma
for retrieval (Gemma 4 has no embedding mode).
- CORPUS_tool_calling_format.md: add Chat Template Context section
documenting the <|turn>/<turn|> asymmetric brackets (new in Gemma 4,
replaced <start_of_turn>/<end_of_turn>) plus <|think>, <|channel>,
<|image>, <|audio> tokens. Add HF transformers Alternative section
showing processor.parse_response with response_schema.
- GOTCHAS.md: add MEDIUM gotcha for abandoned google/gemma_pytorch (no
Gemma 4 support since 2025-05-30). Expand fine-tuning section with FA2/FA4
head_dim=512 break, fused LoRA kernel issues, 26B A4B training-quant
guidance, new tool-call tokens as learned embeddings.
- SYNTHESIS.md: add banner pointing to tooling/ for canonical upstream
material. Add embeddinggemma row to Model Selection table.
Also:
- Add .gitignore excluding .backup/ (local scratch per global CLAUDE.md
convention, not needed in tracked history) and __pycache__/.
- Add .claude/handoffs/2026-04-18-canonical-tooling-research.md so future
sessions can pick up cold — facts verified, open threads, what changed.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Mortdecai