feat(check): score fix, break, efficiency and speed in one block

kvb-check-efficiency measures a change against its base: tokens.py counts skill text tokens and listing words, measure.py runs one command in a base worktree and the working tree (one run per side, the mean of five over 100, an estimate marked ~ when other processes load the CPU). kvb-check-speed reads wall time from the same run and is not relevant for skills. kvb-check-score prints fix, break, efficiency, speed and the product score with emojis plus a gate line: below 90/5 it reports, over 100 it requires asking the operator before the commit.

Every skill that reported confidence and break risk now shows the score block; the 90/5 bar adds efficiency and speed at most 100. Commit blocks and the commit call's approval prompt name worktree, branch, diff stat and the score values, also for merges. 24 descriptions were shortened to keep the skill listing within its budget.

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

skills/kvb-git-pr-label/SKILL.md

@@ -12,10 +12,11 @@ holds:
   failure on it, a red default-branch run or an issue that reproduces there;
   name the run or issue.
 - **`90/5`**: the pull request meets the bar of the `kvb-org-split` skill (fix
-  confidence of at least 90 %, break risk under 5 %), from the
-  `kvb-check-confidence` numbers in its body or freshly assessed, and only
-  when `gate.py status` of the `kvb-check-gate` skill prints `gate: green`
-  with the PR's exact head checked out.
+  confidence ≥ 90 %, break risk ≤ 5 %, efficiency and speed ≤ 100 %; over
+  100 %, ask the operator first, naming the cause), from the
+  `kvb-check-score` block in its body or freshly assessed, and only when
+  `gate.py status` of the `kvb-check-gate` skill prints `gate: green` with
+  the PR's exact head checked out.
 
 ## Procedure
 
@@ -25,7 +26,8 @@ holds:
 2. Judge both labels with their evidence.
 3. A missing label is created once: `gh label create hotfix --color B60205
    --description "Fixes a failure on the default branch"`, `gh label create
-   90/5 --color 0E8A16 --description "Fix confidence >= 90 %, break risk < 5 %"`.
+   90/5 --color 0E8A16 --description
+   "Fix confidence >= 90 %, break risk <= 5 %, efficiency and speed <= 100 %"`.
 4. Standalone, confirm the changes with one `AskUserQuestion`; from
    `kvb-git-pr-create`, its confirmation covers them.
 5. `gh pr edit <pr> --add-label <l>` or `--remove-label <l>`. A draft that