feat(migration/shared): complete PortNames.affine — first compilable Mode-A file (megaport STEP 8)

[hyperpolymath]

Summary

• Promotes migration/shared/PortNames.affine from Wave-3 pilot (was missing isCoprocessorPort) to first fully-compilable Mode-A file in this directory. affinescript check now passes against migration/shared/PortNames.affine.
• Adds migration/shared/STATUS.md — parity table for all 10 Wave-3 .affine files (1/10 compile today; the other 9 are Mode-B aspirational design demos blocked on AS features).

How

• isCoprocessorPort body uses collections::any + string::starts_with — preserves the .res original semantics (the _prefix in the .res was computed-but-unused; Array.some(d => startsWith(port, d)) is the meaningful body).
• Updates the file header to record the depends-on relationship.

Depends on

affinescript#505 — string::starts_with + collections::any only became pub in that PR. Before #505 lands, this file fails resolution with `Symbol is not public`. After it lands, affinescript check passes locally and CI's equivalent will.

What this PR is NOT

This does not replace src/shared/PortNames.res in the build. The .res still owns the runtime contract (it compiles to src/shared/PortNames.res.mjs, which 12 test cases + 2 consumer modules import). Replacement requires AS-to-ESM codegen + consumer-port work — both tracked in STATUS.md's "Replacement" section. This PR ships the verified-correct future shape; the swap is a separate slice.

Campaign tracking

Refs:

• standards#279 — STEP 8 MEGAPORT umbrella (idaptik + panll)
• standards#252 — full ReScript→AffineScript campaign UMBRELLA
• migration/main/PILOT.md + LESSONS.md (in-repo context)

Test plan

• affinescript check migration/shared/PortNames.affine → "Type checking passed" (locally verified against feat/stdlib-pub-visibility-megaport-unblock of affinescript)
• No source-file changes — only migration/shared/ additions
• After affinescript#505 merges, re-verify against main AffineScript
• Future: in-tree CI gate that runs affinescript check migration/shared/*.affine (separate PR — adds AS toolchain dep)

[github-actions]

🔍 Hypatia Security Scan

Findings: 94 issues detected

Severity	Count
🔴 Critical	11
🟠 High	24
🟡 Medium	59

⚠️ Action Required: Critical security issues found!

View findings

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