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

CONTEXT.md

@@ -70,11 +70,11 @@ A companion skill (`core` plugin) that detects a target repo's provider-specific
 A standalone, repo-agnostic plugin (`plugins/lint/`) for configuring and running linters — not scoped to kyberforge's own meta-tooling. First linter is Vale (prose style linting), split into two skills per the git/gitea per-concern pattern: `vale-config` (setup — `.vale.ini`, `StylesPath`, styles) and `vale-run` (invoke Vale, interpret/report findings). A `lint-runner` agent composes these for isolated-context lint sweeps; it is report-only (no `Edit` tool) — it flags findings, it does not rewrite prose. Vale's research docs (`docs/research/docs/vale/`) moved from `plugins/kyberforge/` to `plugins/lint/` to keep the provenance chain same-plugin.
 
 ### Vale audit prefilter (skill-audit / agent-audit)
-Wiring Vale as a deterministic prefilter for `skill-audit`/`agent-audit`'s Description dimension (ADR motivation: issue #84) is repo-specific, not part of the generic `lint` plugin, so its config lives at the repo root rather than inside `plugins/lint/`: `.vale.ini` plus a custom `Kyberforge` style (`styles/Kyberforge/`) covering description-opener banning ("This skill/agent..."), vague-capability wording ("helps with", "utilize", ...), and generic "see references/ for details" padding — and a `KyberforgeCopilot` style (`styles/KyberforgeCopilot/`) scoped only to `.agent.md` files for the Copilot-only "Use proactively has no effect" check. `error` alerts map to FAIL, `warning`/`suggestion` map to SUGGESTION. Vale only replaces the specific pattern-matchable sub-checks named in issue #84 (imperative opener, vague filler, `Use proactively`, generic reference-pointer padding) — body discipline, near-miss exclusion strength, and control calibration stay LLM judgment per the issue's explicit non-goals.
+Wiring Vale as a deterministic prefilter for `skill-audit`/`agent-audit`'s Description dimension (ADR motivation: issue #84) is repo-specific, not part of the generic `lint` plugin, so its config lives at the repo root rather than inside `plugins/lint/`: `.vale.ini` plus a custom `Kyberforge` style (`styles/Kyberforge/`) covering description-opener banning ("This skill/agent..."), vague-capability wording ("helps with", "utilize", ...), and generic "see references/ for details" padding — and a `KyberforgeCopilot` style (`styles/KyberforgeCopilot/`) scoped only to `.agent.md` files for the Copilot-only "Use proactively has no effect" check. `error` alerts map to FAIL, `warning`/`suggestion` map to SUGGESTION. Vale covers the pattern-matchable sub-checks named in issue #84 (imperative opener, vague filler, `Use proactively`, generic reference-pointer padding) plus, per ADR-0013, two body-wide prose-pattern checks (vague-qualifier filler, "There is/are" sentence openers) — everything else about body discipline (defaults-vs-menus, why-rationale, non-pattern-matchable judgment calls), near-miss exclusion strength, and control calibration stays LLM judgment.
 
 Both skills' Step 1, and the `vale-audit-prefilter` pre-commit hook, call `scripts/vale-wrap.sh` rather than `vale` directly — a workaround for a confirmed Vale 3.15.2 limitation (see `vale-config`'s Gotchas): `text.frontmatter.description` silently stops matching once the description is a YAML block scalar (`>`/`|`) spanning 2+ physical lines, which is how most skills/agents in this repo write it. The wrapper flattens the description to one physical line in a scratch copy (padding with blank lines so every other line number is unchanged) before handing off to real `vale`; single-line descriptions pass through untouched. `tests/test-vale-wrap.sh` regression-tests this. Both call sites still scope every invocation to the specific file(s) being audited, never a repo-wide sweep — Vale's glob matching crosses directory boundaries (`plugins/*/agents/*.md` matches nested `docs/research/examples/**/agents/*.md` too), so scoping is what keeps research-example files out of the audit's lint pass. The pre-commit hook's own glob is tightened to `^plugins/[^/]+/(skills/[^/]+/SKILL\.md|agents/[^/]+\.md)$` (single-segment, not `.*`) for the same reason, since pre-commit invokes it automatically against whatever staged files match rather than a manually-scoped target.
 
-This scope expands per ADR-0013: cherry-picked low-noise `write-good`/`alex` rules into `styles/Kyberforge` (still pending implementation) plus a new sibling pre-commit hook, `skill-size-check` (`scripts/skill-size-check.sh`), enforcing `skill-authoring.md`'s 500-line/5,000-token `SKILL.md` ceiling — scoped to `^plugins/[^/]+/skills/[^/]+/SKILL\.md$` only, same as `vale-audit-prefilter`, so it never lints `docs/research/examples/` reference skills. File scope (`SKILL.md` + agent files) and enforcement model (rules land directly in `styles/Kyberforge`, blocking immediately, no trial tier) stay unchanged; governance.md/CONTROLS.md were evaluated and excluded as rule sources (nothing prose-pattern-matchable to mine).
+This scope expands per ADR-0013: cherry-picked low-noise `write-good`/`alex` rules landed in `styles/Kyberforge` as two new rule files, `Kyberforge.VagueQualifier` and `Kyberforge.SentenceOpenerThereIs`, plus a new sibling pre-commit hook, `skill-size-check` (`scripts/skill-size-check.sh`), enforcing agentskills.io's 500-line/5,000-token `SKILL.md` ceiling — scoped to `^plugins/[^/]+/skills/[^/]+/SKILL\.md$` only, same as `vale-audit-prefilter`, so it never lints `docs/research/examples/` reference skills. File scope (`SKILL.md` + agent files) and enforcement model (rules land directly in `styles/Kyberforge`, blocking immediately, no trial tier) stay unchanged; governance.md/CONTROLS.md were evaluated and excluded as rule sources (nothing prose-pattern-matchable to mine).
 
 ### LESSONS.md
 Long-loop feedback log for patterns observed across sessions. Three or more entries on the same pattern graduate to the relevant standing file (e.g. a coding convention, a governance rule). Updated by the session-handoff skill or directly by the human. Lives at the repo root.