fix(lint): resolve round-1 and round-2 review findings on the Vale prefilter

Addresses PR #85's outstanding review items after grilling the open
questions against ADR-0013/CONTEXT.md/ADR-0010:

Blocking fixes:
- vale-wrap.sh: replace json.dumps() escaping (which silently defeated
  Vale's frontmatter scope on any description containing a quote,
  backslash, or non-ASCII char — ~58% of the corpus) with a single-quoted
  YAML scalar, substituting a Unicode right single quote for embedded
  apostrophes rather than '' doubling (Vale's frontmatter scanner isn't a
  full YAML parser and silently truncates on '' too).
- vale-wrap.sh: fix a blank-line-inside-a-folded-description truncation
  bug via indentation-based, blank-line-tolerant body capture; narrow
  flattening to `>`-style scalars only (`|` already works unflattened).
- skill-audit/agent-audit Step 1: make the vale-wrap.sh invocation
  cwd-independent via git rev-parse --show-toplevel, fixing a bug where
  no single cwd satisfied all three Step 1 commands.
- styles/Kyberforge/VagueQualifier.yml: prune 17 tokens verified
  false-positive-dominated on this repo's own voice via a real corpus
  sweep (obvious, clearly, usually, several, simple, easy, completely,
  simply, tiny, etc.), keep 13 with real or unattested noise. Revert the
  28 prose "fixes" those tokens drove across 14 skill files back to their
  original, correct wording, including a functional regression to
  caveman/SKILL.md's own filler-word list (a mention, not a use) — now
  guarded with vale-off comments against recurrence.

Gaps:
- --minAlertLevel=warning on the pre-commit hook and Step 1 invocation
  so warning-level rules actually surface, without collapsing the
  FAIL/SUGGESTION severity mapping skill-audit/agent-audit rely on.
- vale-wrap.sh: fix --config=<path> equals-form, absolute-path silent
  no-op, and a zero-file-argument stdin hang.
- Route vale-run and lint-runner through a documented wrapper script
  when a target repo has one, instead of unconditionally recommending
  bare `vale`.
- Wire Kyberforge.VagueQualifier/SentenceOpenerThereIs into skill-audit/
  agent-audit's dimension-mapping prose (Body discipline).
- Add plugins/lint/sources.md provenance for lint-runner (ADR-0010).
- Sync both marketplace.json lint-entry descriptions with plugin.json.
- Retune skill-size-check.sh's MAX_WORDS 5000->2900 (measured ~1.6-1.7
  tokens/word on this repo's corpus, the old value gated at ~8,500
  tokens against a stated 5,000 ceiling); fix the >/>= line-count
  boundary and wc -l undercount on files with no trailing newline.
- Document the vale binary as a Setup prerequisite in AGENTS.md.
- Fix SentenceOpenerThereIs's dead regex alternative and add a real
  sentence-start anchor/scope.
- Fix a stale docs/research/docs/vale/ index pointer in kyberforge's
  docs README (moved to plugins/lint/ in e1a5403).
- Rewrite ADR-0013's Consequences section past-tense to describe what
  actually landed, and record the styles-portability limitation
  (repo-root placement stays intentional; deferred to a separate
  session per this PR's review).

Test coverage: 9 new vale-wrap.sh fixtures (quotes, backslash/unicode,
blank-line paragraphs, --config= form, zero-arg/absolute-path handling,
literal-block no-regression) and boundary-pair tests for
skill-size-check.sh's line/word ceilings.

bash tests/run-tests.sh: 9 scripts + 125 bats assertions, all passing.
scripts/check-manifests.sh and claude plugin validate --strict: clean.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MCQ648fLSFXPHGZdQ8gn58

docs/adr/0013-vale-harness-scope-and-rule-sources.md

@@ -72,13 +72,22 @@ standing report-only tier for future candidate rules.
 
 ## Consequences
 
-- `styles/Kyberforge/` will gain new rule files once the (separate, later) implementation pass
-  finalizes the exact cherry-picked `write-good`/`alex` rules and any new wording — none are named
-  by this ADR, since none have been chosen yet.
-- A new pre-commit hook (name TBD by the implementer) enforces the 500-line/5,000-token `SKILL.md`
-  ceiling, sibling to `skill-frontmatter`.
-- `styles/KyberforgeTrial/` and `.vale.trial.ini` are deliberately not created — noted here so a
+- `styles/Kyberforge/` gained two new rule files, cherry-picked from `write-good`/`alex` as
+  low-noise against this repo's corpus: `VagueQualifier.yml` and `SentenceOpenerThereIs.yml`.
+- A new pre-commit hook, `skill-size-check` (`scripts/skill-size-check.sh`), enforces the
+  500-line/5,000-token `SKILL.md` ceiling, sibling to `skill-frontmatter`.
+- `styles/KyberforgeTrial/` and `.vale.trial.ini` were deliberately not created — noted here so a
   future reader doesn't wonder if a trial tier was forgotten.
-- Follow-up work — not part of this ADR — is: syncing and trialing `write-good`/`alex`, cherry-picking
-  low-noise rules, writing the size-ceiling script and hook, fixing existing corpus violations, and
-  the atomic commit landing all of it.
+- The styles-portability question — whether `styles/` and `.vale.ini` should move into
+  `plugins/lint/` so the prefilter also works for repos that install `kyberforge@holocron` as an
+  external plugin, rather than living at this repo's root — was deliberately deferred, not fixed,
+  in this pass. This repo-root placement remains intentional: this ADR's "File scope stays the
+  same" framing is specific to Kyberforge's own authoring conventions in this repo, not a generic
+  `lint`-plugin feature. Portability is a known limitation, tracked for a separate future session,
+  not silently forgotten.
+
+**What this ADR's implementation pass did:** synced and trialed `write-good`/`alex` against the
+existing SKILL.md/agent-file corpus, cherry-picked the two low-noise rules above into
+`styles/Kyberforge`, wrote `scripts/skill-size-check.sh` and its pre-commit hook, fixed the
+resulting corpus violations, and landed the rule changes and corpus fixes as one atomic commit —
+matching the enforcement model described above (no partial or opt-in state).