Memo 079: Fix license metadata + add LICENSE file

[a6b8]

Classification

Blocker — Public org profile repo, audit-relevant.

Background

Memo 079 (Repo-Hygiene-Triage) Phase 2 inventory found:

• package.json declares "license": "ISC" — violates FlowMCP MIT convention (Memo Kap. 6 Soll-Liste)
• LICENSE file is missing on disk
• package.json missing description, author, repository.url, bugs.url, homepage, engines.node

Expected

• package.json.license = "MIT"
• LICENSE file present with standard MIT text
• Required metadata fields populated per Memo 079 Kap. 6

Actual

• License says ISC, file missing, several metadata fields blank.

Scope

Triage row T#15 + T#17. NOT included (out-of-scope here): renaming package.json.name from updater (covered by separate on-hold issue T#16).

References

• Memo 079 REV-04: ~/WORKBENCH/ressources/projects/flowmcp/.memo/079-repo-hygiene-triage/revisions/REV-04.md
• Welle 1 Inventory: .memo/079-repo-hygiene-triage/rollout/welle-1-inventory.md