[osolmaz]

Summary

switch's run and replay still had a --definition <file> flag that existed only for legal-judge's judge files, and the word check that keeps domains out of switch had its own fixed list of words.
This change lets each domain bring its own command-line flags, so switch's commands name no domain's input, and lets each example list its own words, so a new example is checked too.
Both points come from the earlier review of switch's code, which called them out and which #30 and #31 left open.

What Changed

switch's commands now take only their own flags, plus the flags that each domain declares.
The word check reads its words from the examples.

• Domain flags. HarnessDomain gets flags, a list such as { flag: "--judge <file>", description }. commandLine adds every domain's flags to run and replay, and setup gets the values of its own flags by name. --definition and DefinitionError go. The Definition record in run.json stays.
• Examples. legal-judge declares --judge <file> in legalJudgeDomain, in setup.ts. Chess declares none, and chessSetup() takes nothing.
• Word lists. Each example has a domain-words.txt, one word a line. tests/no-domain.test.ts reads every example's list and fails when an example has none. The lists leave out words that are too common, such as check, square and san, which matched sans-serif.
• Docs. The README, AGENTS.md, the legal-judge README and the plan describe the flags and the word lists.

Testing

I ran every check of switch, the viewer and both examples, and the help of both harnesses.

• pnpm check: format, lint, typecheck, coverage, DRY and Slophammer with no findings. 47 tests in switch, 32 in the viewer, 74 in chess and 45 in legal-judge.
• A new test: a domain's flags appear on run and replay once each, and setup gets the values of its own flags and nothing else.
• legal-judge run --help lists --judge <file>, and chess run --help has no definition flag.

Risks

A command line or script that passes --definition to legal-judge must pass --judge now.

• A domain flag must take a value. A flag without one gives setup no value.