1.7.0 — OpenCode dialect fix, 132-pair migration sweep

Features

• Full-migration sweep (npm run sweep) — seeds every source agent's real files in its own dialect (TOML for codex, command-arrays for kilo, required transport tags for crush, commented JSONC), migrates all 12×11 = 132 pairs through the real CLI into fresh dirs, and validates each result: target detected, doctor clean, instructions at the documented path, both MCP servers (command+env and url+headers) preserved through every dialect, source files untouched. 132/132 passing.
• README reflects opencode.json[c] (both config names supported)

Fixed

• OpenCode adapter now matches OpenCode's documented schema — the scanner reads the documented mcp key (legacy mcpServers configs still read) and normalizes the local/remote dialect (array command + environment; url + headers); the writer emits that documented dialect instead of mcpServers with stdio tags, and remote servers are no longer dropped (they were previously written as an invalid {type: "stdio"} with neither command nor url); the detector also accepts opencode.json — previously the tool could not detect its own writer output; doctor validates the documented key with the legacy key as an alias
• Copilot's instruction file no longer leaks into other agents — migrating copilot → claude/codex/opencode/kilo/cursor wrote .github/copilot-instructions.md, which none of those agents read; instruction-name normalization now maps it to AGENTS.md like GEMINI.md/MUSE_CODE.md

Tests & docs

• 203 tests (was 195); opencode fixture, writer/scanner/detection/pipeline tests pinned to the documented dialect; new opencode detection regression tests