Squash Odysseus development history

specs/model-providers/deepseek.md

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+# DeepSeek Provider Shape
+
+Last updated: dev@2e2bb52 | 2026-08-16
+
+## Scope
+
+Canonical provider ID `deepseek`; official cloud OpenAI-compatible API;
+curation/detection in `routes/model_routes.py` and runtime reasoning handling in
+`src/llm_core.py`.
+
+## Shape And Observations
+
+Use the general model-list inventory shape; capability-looking fields remain
+unknown until a DeepSeek-native reader maps them. Cloud response history can use
+`reasoning_content`; preserve it structurally for reasoning turns and tool
+continuation (#968, #3152). `deepseek-chat`, reasoning models, distilled local
+variants, and future V4 models do not share one capability record.
+
+Cloud endpoint evidence can support tools while a local DeepSeek-R1 deployment
+may not have a working tool parser. Existing tool-support tests intentionally
+separate official host from local engine/model-name heuristics.
+
+Current runtime thinking-pattern detection includes DeepSeek V4 identifiers so their structured reasoning channel is handled like the other supported DeepSeek reasoning families. This name-level compatibility rule is not canonical capability evidence and does not make every V4-labelled local deployment tool-capable.
+
+## Fallback And Current Gaps
+
+Exact `*.deepseek.com` selects provider identity; self-hosted checkpoints use
+Ollama/vLLM/SGLang/llama.cpp identity. Curated model IDs and pricing/context
+tables are compatibility data, not authoritative capability. A rich official
+model-card reader is still absent.