add-harness-adapter

Add or update an agent-top transcript adapter for a coding-agent harness (Aider, Copilot CLI, cursor-agent, Amp, a new Claude/Codex/Gemini/OpenCode format version). Use when asked to "support harness X", "read X's transcripts", "count X's tokens/cost/MCP calls", when a golden or drift test fails after an upstream release, or when a harness shows up in the table with no tokens, no cost, or the wrong attribution.