Update sweeper-fix skill to v5: strict trigger + graceful no-record hand-back

Author: egamma

.github/skills/sweeper-fix/SKILL.md

@@ -1,10 +1,10 @@
 ---
 name: sweeper-fix
-description: Fix a microsoft/vscode issue that the VS Code Sweeper reviewed as agent-fixable. Fetches the review's fix spec from the sweeper's public state repo, implements the narrow fix in the current vscode checkout, and — after showing the diff — opens a draft PR. Use when asked to fix a vscode issue with the sweeper-fix skill, a vscodesweeper record, or a sweeper fix spec.
+description: Implement a VS Code Sweeper fix spec — fetch the sweeper's agent-fixable review record from its public state repo, implement the narrow fix in the current vscode checkout, and — after showing the diff — open a draft PR. Use ONLY when the request explicitly asks for the sweeper — "sweeper-fix", "sweeper", "vscodesweeper", a sweeper record, or a sweeper fix spec. Do NOT use for a plain "fix this issue" request that doesn't mention the sweeper; fix those directly with your normal tools instead.
 ---
 
-<!-- Generated by vscodesweeper (sweeper-fix skill v4) — do not edit by hand.
-     Source: prompts/sweeper-fix-skill.md in the vscodesweeper repo; getting started:
+<!-- Generated by vscodesweeper (sweeper-fix skill v5) — do not edit by hand.
+     Source: skills/sweeper-fix/SKILL.template.md in the vscodesweeper repo; getting started:
      https://egamma.github.io/vscodesweeper-state/fix-skill.html -->
 
 # sweeper-fix — implement a sweeper-reviewed fix
@@ -34,8 +34,10 @@ access):
 gh api "repos/egamma/vscodesweeper-state/contents/records/microsoft/vscode/items/<issue-number>.md?ref=state" -H "Accept: application/vnd.github.raw"
 ```
 
-No record → stop: this issue hasn't been reviewed by the sweeper; the skill only fixes
-reviewed, agent-fixable issues.
+No record → this skill does not apply: the issue hasn't been reviewed by the sweeper, and
+the skill only implements sweeper fix specs. Say so in one line, then **continue fixing the
+issue by your normal means** (fetch it with `gh issue view`, analyze, implement) — the
+absence of a sweeper record is never a reason to refuse the fix itself.
 
 ## 2 · Gate — every check against LIVE GitHub state, not just the record