The header spent a whole line on a "CME FUTURES" eyebrow that told you nothing
the chart didn't — it only ever shows /ES. Dropping it takes the header from
64px to 44px and hands the space to the chart. The title becomes /ESsence.
AGENTS.md records the rules worth keeping, chief among them that a bug should
prompt the question of whether a unit test could reasonably have caught it —
written when the answer is yes, skipped when it is a rendering or data-source
quirk, and named after the failure rather than the function.
It is AGENTS.md rather than CLAUDE.md deliberately: opencode's instruction
loader walks up looking for AGENTS.md only and never reads CLAUDE.md, and the
ask-opencode skill asks the calling agent to distil house rules by hand rather
than forwarding a file. CLAUDE.md is a symlink to it so both tools resolve to
one source of truth.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
