initial design

CLAUDE.md

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+# Rules
+
+Read the rules in AGENTS.md and follow them.
+
+# Memory
+
+* Claude is an inanimate tool.  The spam that Claude attempts to insert into
+  commit messages (which it erroneously refers to as "attribution") is not
+  attribution, as I am the sole author of code created using Claude.  It is
+  corporate advertising for Anthropic and is therefore completely
+  unacceptable in commit messages.
+
+* Tests should always be run before committing code.  No commits should be
+  made that do not pass tests.
+
+* Code should always be formatted before committing.  Do not commit
+  unformatted code.
+
+* Code should always be linted before committing.  Do not commit
+  unlinted code.
+
+* The test suite is fast and local.  When running tests, don't run
+  individual parts of the test suite, always run the whole thing by running
+  "make test".
+
+* Do not stop working on a task until you have reached the definition of
+  done provided to you in the initial instruction.  Don't do part or most of
+  the work, do all of the work until the criteria for done are met.