chore(skill): bump to v3.0.7 + changelog

- Detector: italic-serif display heroes and hero eyebrow chips
  (#129, contributed by @vinaypokharkar).
- Live mode: durable session journal, status/resume/complete
  commands (#125, contributed by @nqh-packages).
- Reference files: stripped "Remember:" closer chants, brochure-style
  openers (12 files), and 419 em-dashes. Less context per command load,
  less repetition the model reads past.

Refresh harness output dirs and plugin/ subtree.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

plugin/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "impeccable",
   "description": "Design fluency for frontend development. 1 skill with 23 commands (/impeccable polish, /impeccable audit, /impeccable critique, etc.) and curated anti-pattern detection.",
-  "version": "3.0.6",
+  "version": "3.0.7",
   "author": {
     "name": "Paul Bakaus",
     "email": "paul@paulbakaus.com"