pipeline: EDITORIAL.md voice charter + fresh-eyes copy-edit stage

One written standard for every audience-facing word: concise, to the
point, inspiring delight through specificity — with word budgets per
copy type (reviews had drifted from a ~370-word median to 500-1000+).
All writing skills now reference the charter, and daily-pipeline gains
a stage-4 copy-edit pass: a subagent that didn't write the day's copy
tightens it against the charter, prose only, diff reviewed before
commit. Digest gains a copy-edit line.

Claude-Session: https://claude.ai/code/session_01WZaczDJjL3xZ3u5spsN5AL

.claude/skills/build-review/SKILL.md

@@ -63,7 +63,7 @@ Take the find's 2-3 sentence body and expand it to a full review:
 - 3-5 paragraphs covering: what it is, the specific problem it solves, the concrete details that make it earn its place, and any honest limitations (surfaced by step 3).
 - Reference the hero asset inline where it helps (relative `./hero.<ext>`; use `astro:assets` `<Image>` for JPG sources — plain Markdown images have rendered small on JPGs).
 - Don't pad. If the find body is already complete, the review is just it + a blockquote summary + maybe one paragraph on context.
-- Match the voice of existing reviews under `src/content/reviews/` — informative, concise, no sales tone.
+- Write to `EDITORIAL.md` (the voice charter): concise, to the point, delight through specificity. Budget: **250–450 words, hard ceiling 600** — narrative subjects (travel, history, story-led pieces) may earn up to ~800 when the story itself is the delight. Budgets are ceilings, not targets.
 
 Interactive mode: show the proposed body and wait. Autonomous mode: proceed.