### Fixed
- DeepSeek thinking-mode tool-call rounds now always replay reasoning_content
in all subsequent requests (including across new user turns), matching the
documented API contract that assistant tool-call messages must retain their
reasoning content forever. Previously, reasoning_content was cleared after
the current user turn completed, which could cause HTTP 400 errors.
- Missing reasoning_content on a tool-call assistant message now substitutes
a safe placeholder ("(reasoning omitted)") instead of dropping the tool
calls and their matching tool results, preventing orphaned conversation
chains and API 400 rejections.
- Session checkpoint now persists a Thinking-block placeholder for tool-call
turns that produced no streamed reasoning text, keeping on-disk sessions
structurally correct for subsequent requests.
- Token estimation for compaction now counts thinking tokens across ALL
tool-call rounds (not just the current user turn), aligning with the
updated reasoning_content replay rule.
### Changed
- Internal crate dependency pins bumped 0.4.5 → 0.4.9 to match workspace.
- npm wrapper version and deepseekBinaryVersion bumped to 0.4.9.
- README fully rewritten: clearer feature highlights, V4 model focus,
keyboard shortcut table, improved docs index, and more engaging layout.
- CHANGELOG entry for 0.4.9 with comparison URLs.
Adds first-class DeepSeek V4 Pro and Flash support, updates the default model to deepseek-v4-pro, aligns legacy aliases with the current V4 1M context behavior, and fixes thinking-mode request handling.
Key fixes:
- Send DeepSeek's raw Chat Completions `thinking` parameter at the top level instead of SDK-only `extra_body`.
- Preserve assistant `reasoning_content` for all prior thinking-mode tool-call turns so subsequent requests satisfy DeepSeek V4's replay requirement.
- Fix npm wrapper concurrent first-run downloads by using per-process temporary download paths.
- Add `.mailmap` so historical bot-attributed commits aggregate under Hunter Bown where mailmap is honored.
Verified with the full local Rust gate, live DeepSeek V4 smoke, npm wrapper temp-install smoke, and green PR CI across Linux, macOS, and Windows.
- Move src/* into crates/tui/src/ to create a proper workspace structure
- Add .claude/ and .trimtab/ directories for Trimtab closed-loop workflow
- Add DEPENDENCY_GRAPH.md and update documentation
- Update Cargo.toml files to reflect new crate dependencies
- Update CI workflows and npm package scripts
- All tests pass, release build works
- Convert root to Cargo workspace with crates/ layout
- Add deepseek-* crates mirroring Codex architecture
- Add parity CI workflow with snapshot/protocol/state tests
- Update release workflow to build both deepseek and deepseek-tui binaries
- Bump version to 0.3.28
Hunter Bown