v0.4.0

The catalog grows from 29 rules to 49. Every new rule was probed against
pre-2022 Hacker News comments or Project Gutenberg texts before shipping,
and each narrowing is pinned by an examples_ok fixture.

New rules

• worth-saying-plainly (rhetorical-tic, warning): the self-rating
  opener, "Worth saying plainly, ...". Needs all three slots -- evaluative
  adjective, speech verb, manner adverb -- at a sentence or paragraph start.
• hold-onto-that (rhetorical-tic, warning): the sentence-initial
  reader directive "Hold onto that" / "Hold on to this".
• cleanly (rhetorical-tic, warning): the bare manner adverb, "splits
  cleanly into", "maps cleanly onto".
• clean-count (rhetorical-tic, warning): a number plus "clean" plus a
  partition noun, "two clean buckets".
• cleanest-x (rhetorical-tic, warning): the superlative used to rank
  one's own claim, "the cleanest framing is".
• clean-x (rhetorical-tic, info): "clean" in front of an idea as
  praise, "a clean abstraction".
• earns-its-place (rhetorical-tic, warning): "earns its place" and
  "earns its keep", the metaphor of a sentence or feature paying rent.
• does-a-lot-of-work (rhetorical-tic, warning): the remark that points
  at a word and rates its load, "that qualifier does a lot of work here".
• failure-mode-here (rhetorical-tic, warning): "the failure mode here
  is", the engineering term borrowed for an argument or a person. The
  deictic "here" is the whole narrowing.
• thats-the-tension (rhetorical-tic, warning): the sentence-initial
  closer "That's the tension." and "That's the bet:".
• right-up-until (rhetorical-tic, warning): "right up until it
  doesn't". The intensifier is the narrowing -- the plain "until it doesn't"
  is an old human idiom and stays clean.
• two-things-true (rhetorical-tic, warning): "two things can be true",
  the concession that names neither half.
• notice-what-there (rhetorical-tic, warning): the self-referential
  attention cue, "Notice what that argument did there", "Read that again".
• notice-what (rhetorical-tic, info): the bare sentence-initial
  "Notice what ...", the quiet half of the pair above.
• none-of-this-is-to-say (rhetorical-tic, warning): the sweeping
  concession that retracts an argument nobody made.
• if-im-being-honest (rhetorical-tic, info): the candor preamble.
  Plain "to be honest" and "I'll be honest" stay clean.
• genuinely (rhetorical-tic, info, off by default): every
  "genuinely". No allowlist separates the intensifier from the contrastive
  use, so the rule runs only when named in --select, beside
  rule-of-three.
• question-isnt (structure, info): the corrective frame in
  interrogative dress, "The question isn't whether X, it's whether Y".
  Requires the resolving clause.
• and-thats-fine (rhetorical-tic, info): the permission-granting
  closer. The match must open and close a sentence.
• less-about-more-about (structure, info): the comparative
  reframe, "It's less about X and more about Y". Both halves required.

Changed rules

• sit-with-that broadened to any object. Two branches: the deictic object
  needs no anchor, any other object needs the sentence-initial imperative.
• the-punchline-is widened to take "the honest answer is" and "the honest
  version is".
• worth-naming and worth-saying-plainly widened together and stopped
  double-flagging. Both take more verbs; worth-naming now yields the
  adverb-bearing form to worth-saying-plainly.

Docs

• docs/SPEC.md credits Wikipedia's "Signs of AI writing" and slopwash.com's
  anti-slop ruleset, next to proselint, vale and write-good.
• The SPEC rule catalog had drifted ten rules behind the code. It is resynced,
  and spec/rules_spec.rb now asserts every rule id appears in docs/SPEC.md,
  the same way it already asserts the README counts.