Rewrite the agent rules from scratch, with one idea per sentence and
every file name and command in backticks. Drop the rule that models
embed `models.Base`, which no package has. Say that the linter keeps
tests in external test packages, and that an `export_test.go` file
gives them access to unexported code. Limit the rules on doc comments
and blank imports to files outside the tests. State magic numbers as
a preference, and correct the blank-line rule for `return`. State the
branch workflow: pull requests target `next` and only the owner
merges `next` into `main`. Record the three snake_case JSON tags the
HTTP API keeps.
Part of #190.
Model: fable-5-1 (writing, rework); opus-5-5 (rework)
clawbot