fix(skills): show the diff stat, never the diff, in commit and essence skills

kvb-git-commit-no-verify, kvb-git-commit-next and kvb-skill-essence printed the full staged diff into the chat before every commit or batch write. The operator ordered on 2026-11-11 that the chat shows only the diff stat and the score table, to save tokens.

🎯 Fix: 92 %
💥 Break: 2 %
💸 Cost: 99 %
⏱️ Time: 100 %
🛡️ Security: 100 %
🏆 Score: 91
🚦 Gate: ✅ 90/5, cost and time <= 100, security 100 %

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

skills/kvb-git-commit-next/SKILL.md

@@ -12,13 +12,13 @@ description: >
    cherry-pick or merge, never touch the staging index or the tree.
 2. A similar fix on another branch is a stop: run the kvb-think-dialectic
    skill on the two candidates (staged version as thesis, foreign commit as
-   antithesis) until one survives, then present sha, branch, both diffs, the
+   antithesis) until one survives, then present sha, branch, both diff stats, the
    verdict and the recommended move (keep staged / take theirs / combine).
    Wait for the operator's decision; do not commit.
 3. Nothing similar found, or the operator picked the staged version: run the
    kvb-git-commit-no-verify skill on the currently staged changes
    (kvb-code-clean pass and kvb-check-legal check first, then the
-   full staged diff and the kvb-check-score commit table of 📁 worktree,
+   kvb-check-score commit table of 📁 worktree,
    🌿 branch, 📊 diff stat, scores with 🛡️ security and gate, then
    `git commit --no-verify`, exact staging index only, its message carrying
    the `score.py --message-block` paragraph right before the

skills/kvb-git-commit-no-verify/SKILL.md

@@ -9,12 +9,12 @@ description: >
    staged and unstaged changes first, then the kvb-check-legal check over
    the staging index. A legal blocker stops here.
 2. Show in the message right before the `git commit` call, never only after
-   it, the full staged diff (`git diff --cached`), then the commit table of
-   the kvb-check-score skill (`score.py ... --commit-table <worktree>`):
-   📁 worktree, 🌿 branch, 📊 staged diff stat, then fix, break, cost,
-   time, security, score and gate of the staged bundle, as the
-   kvb-check-confidence skill produces them: break risk derived through the
-   kvb-check-break-risk skill, never estimated.
+   it, the commit table of the kvb-check-score skill (`score.py ...
+   --commit-table <worktree>`): 📁 worktree, 🌿 branch, 📊 staged diff stat,
+   then fix, break, cost, time, security, score and gate of the staged
+   bundle, as the kvb-check-confidence skill produces them: break risk
+   derived through the kvb-check-break-risk skill, never estimated. Never
+   print a diff in the chat, only its stat.
 3. Approval-prompt duty: the commit call's approval prompt (Claude Code: the
    Bash `description`; other runtimes: their prompt text) names the worktree
    path, the branch, the diff stat and the score values (🎯 fix, 💥 break,
@@ -27,8 +27,7 @@ description: >
    operator's word for this one commit only once its `approval.py verify`
    step exits 0 on the exact staged tree; otherwise the chat question stays
    the fallback. The same duty holds for every call that creates a commit,
-   `git merge` included (there the incoming diff stat, and the incoming diff
-   in the message before).
+   `git merge` included (there the incoming diff stat).
 4. Commit exactly the staging index with `git commit --no-verify` and a
    Conventional-Commits message derived from the staged diff; never add
    unstaged files, never push. The message carries the output of

skills/kvb-skill-essence/SKILL.md

@@ -62,7 +62,7 @@ Keep any fact with no other home (it is not redundancy) and the trigger
 wording of a `description`: tighten it, never drop the "when". Dates stay
 absolute; never introduce "recently" while shortening.
 
-## Step 4: show the diff, then write
+## Step 4: confirm, then write
 
 Write in place: an essence beside the original saves nothing, the original
 still loads. A git repository needs a clean status for the rewritten paths,
@@ -70,8 +70,8 @@ so git alone reverts every edit; not clean: report and stop. `~/.claude` and
 `~/.agents` are usually not under git: copy each file to `<file>.pre-essence`
 first.
 
-Present per file the diff and the lines and characters saved; ask one
-confirmation for the batch; write only after it.
+Present per file the lines and characters saved and what was cut, never the
+diff; ask one confirmation for the batch; write only after it.
 
 ## Step 5: verify