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Edit CAE: Mission Statement

Core Objective

To implement a high-reliability file editing system for Opencode that combines Aider-style semantic anchoring with Industrial-grade data safety, while ensuring a seamless native visual experience.

Technical Goals

1. Fix Platform Deficiencies (The Registry Patch)

  • Address the "Metadata Erasure" bug in Opencode's registry.ts.
  • Ensure that external plugins can pass structured metadata (Diff, FileStats) to the TUI.
  • Maintain this fix as a surgical patch to minimize upstream maintenance burden.

2. High-Reliability Editing (The CAE Logic)

  • Coordinate Drift Resilience: Use multi-layer fuzzy matching (LineTrimmed, BlockAnchor) to locate targets even after content has shifted.
  • CRLF Awareness: Eliminate the legacy +1 indexing bug by dynamically detecting and respecting line endings.
  • Tail Integrity Guard: Validate that content following the edit area remains bit-identical after the operation.
  • Atomic fsync Writes: Ensure data is physically committed to disk before finalizing the edit.

Success Criteria

Reliability & Safety

  • ZERO accidental file truncations in edge cases (.gitignore without trailing newlines, CRLF files).
  • Automatic rollback if post-write verification fails.
  • Consistent Python indentation enforcement (prevent mixing tabs/spaces).

User Experience (Visual Parity)

  • Native Side-by-Side Diff window triggers automatically in the Opencode TUI.
  • Accurate addition/deletion statistics reported to the agent.
  • Seamless integration where the AI prioritizes edit_cae via system instructions.

Agent Operational Mode

Your operational mode has changed from plan to build. You are no longer in read-only mode. You are permitted to make file changes, run shell commands, and utilize your arsenal of tools as needed.
  • Standard Plugin Architecture: edit_cae remains a standard plugin following the @opencode-ai/plugin spec.
  • Patch-Driven Workflow: Use a Makefile to automate the Pull -> Patch -> Build -> Install cycle for the Opencode core.
  • Future-Proof: If Opencode fixes the registry bug, the plugin survives without modification by simply dropping the patch.