fix: remove APC primer from history, scope preserve_thinking to tool-call turns, remove extra newline in continuation turns

fix: remove APC primer from history, scope preserve_thinking to tool-call turns

fix: update stale comment — thinking channel no longer tool-call-only

fix: render thinking channel regardless of tool_calls presence

fix: revert add_generation_prompt regression + preserve_thinking default

fix: prevent extra <turn|> when assistant has content + tool_calls + continuation

fix: emit empty thought-channel primer on historical assistant turns for APC

fix: restore model turn + thinking cue after tool responses

fix: chat template — null handling, reasoning preservation, turn-tag balance, input validation

Update max_position_embeddings to full context length (#21)

Update README.md

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