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/caveman.json

@@ -0,0 +1,17 @@
+{
+  "id": "caveman",
+  "number": "02",
+  "kind": { "en": "COMMUNICATION STYLE", "pt": "ESTILO DE COMUNICAÇÃO" },
+  "title": "caveman",
+  "rule": { "en": "Signal first. Drop filler.", "pt": "Sinal primeiro. Corte o excesso." },
+  "use": {
+    "en": "Use for routine status, handoffs, and technical summaries where speed matters. Short fragments make actions and evidence easy to scan.",
+    "pt": "Use em status, handoffs e resumos técnicos rotineiros onde velocidade importa. Fragmentos curtos facilitam localizar ações e evidências."
+  },
+  "example": { "en": "Built. Tests pass. Published.", "pt": "Feito. Testes passaram. Publicado." },
+  "caution": {
+    "en": "Drop the style for security warnings, irreversible actions, and sequences where terse wording can be misread.",
+    "pt": "Abandone o estilo em alertas de segurança, ações irreversíveis e sequências onde concisão pode causar erro."
+  },
+  "source": "https://github.com/JuliusBrussee/caveman/blob/3b74643f4d910f496babd4e634b1ba7168816f14/skills/caveman/SKILL.md"
+}