ops: stage the amicissimo entitled-tier skills (piccolissimo/intonatissimo/altissimo) into the server skill set

[aarontrowbridge]

Context

amicissimo #404 merged a new canonical skills surface: amicissimo/skills/ (piccolissimo, intonatissimo, altissimo — the entitled-tier usage skills for the issmo private packages). Until now those skills were staging-local hand-copies with no canonical home (the drift class amicode #836 documented). With the canonical home live, the staging pipeline must sync from it the same way it syncs the armonissima commons — deliberate allowlist, per-skill rsync, hash logging, no silent drift.

The slice

Extend ops/server/stage-internal-skills.sh (or add a sibling section inside it) with a second source:

• AMICISSIMO="$HOME/armonia/repos/amicissimo/skills" → staged into the same $STAGED tree.
• Its own allowlist: piccolissimo, intonatissimo, altissimo (entitled surface — same discipline: absent-from-source = loud SKIP, per-skill hash logging before/after).
• Update the header comment (the canonical-home ruling: entitled-package usage skills live in amicissimo per its ADR-0002 boundary test; the armonissima commons remain the first source).
• Update ops/README.md's staging row (the staged count and the source description) if it enumerates sources.

Acceptance

• Running the script stages all three skills from the amicissimo clone with hash receipts; an absent skill logs SKIP loudly.
• The armonissima loop's behavior is byte-identical (no regression to the existing allowlist).
• The staging-path split guard and the reference audit are preserved.

[aarontrowbridge]

Correction to this issue's scope. The original framing (stage the skills from amicissimo/skills/, the new canonical home) was built on a wrong premise: the skills were never homeless — amicode's extension bundle is their canonical home per ADR-0011 ('entitled is a STAGING gate, not a location'; hash-verified against the boot rsync), which also rules out an extract pipeline. amicissimo #404 was reverted (#405/#406). The reworked PR #908 lands the content in the bundle (altissimo + the extended piccolissimo, trimmed to the ADR-0011 content policy) and drops the staging-script mechanism — the boot rsync already stages bundle skills. Only the ops/README floor bump (45→46) survives from the original scope.