feat: add ApplyPatch support for OpenCode#41
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Handle the custom patch format (*** Begin Patch / *** Update File / *** Add File / *** Delete File) used by models like GPT 5.4 in OpenCode. Adds apply-patch.lua to parse the format and compute per-file diffs, wires it into core-pre-tool.sh and core-post-tool.sh, and updates the OpenCode adapter to pass patch_text from both field name variants. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Tests the *** Begin Patch format parser directly via nvim --headless, covering update, add, delete, multi-file, and multi-hunk scenarios. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
apply-patch.luaparser for the custom patch format (*** Begin Patch/*** Update File:/*** Add File:/*** Delete File:) used by models like GPT 5.4 in OpenCodecore-pre-tool.sh(compute per-file diffs) andcore-post-tool.sh(close diffs on accept)patch_textfrom bothpatchTextandpatchfield namesdebugconfig option to README andapply-patch.luato architecture diagramnvim --headless -lTest plan
bash tests/run.sh) — 5 new + 22 existingApplyPatchtool name)