feat(content): migrate interactiveCopy into six typed collections

Move the six remaining bilingual datasets from app.js:160 into Astro
content collections so GuideSelector has data to drive. Mechanical copy
of 178 strings (160 localized pairs + 18 worker array strings) plus
the non-localized fields (status, path, command, score, icon, title,
number). Source field on commonSkills embedded from skillSources to
match the GuideSelectorData contract; if a URL changes, both this
entry and skillSources/<id>.json must be updated. Status kept on trees
even though GuideSelectorData omits it — index.html renders it.

Did not delete interactiveCopy from app.js: legacy page still consumes
it, and verify.mjs still asserts against it. Did not migrate the
labels (data.labels.*) — those live inside render functions in app.js
and belong to 15d.

src/content/commonSkills/research.json

@@ -0,0 +1,20 @@
+{
+  "id": "research",
+  "number": "04",
+  "kind": { "en": "SOURCE DISCIPLINE", "pt": "DISCIPLINA DE FONTES" },
+  "title": "research",
+  "rule": { "en": "Trace claims to owners.", "pt": "Leve afirmações até suas fontes." },
+  "use": {
+    "en": "Use when APIs, standards, architecture facts, or current behavior must be verified. Capture findings in a cited note, prioritizing primary sources.",
+    "pt": "Use quando APIs, padrões, fatos de arquitetura ou comportamento atual precisam ser verificados. Registre achados citados, priorizando fontes primárias."
+  },
+  "example": {
+    "en": "Git behavior → git-scm.com docs, not a remembered blog summary.",
+    "pt": "Comportamento do Git → documentação git-scm.com, não memória de um blog."
+  },
+  "caution": {
+    "en": "Practitioner articles add context; they do not override official behavior.",
+    "pt": "Artigos de praticantes dão contexto; não substituem comportamento oficial."
+  },
+  "source": "https://github.com/mattpocock/skills/blob/6654f6b60cd9d5be8b54c6fafe44346dabeb3b76/skills/engineering/research/SKILL.md"
+}