chore: record LTR-15 and LTR-16 Lexicon CIDs

[CountableNewt]

What changed

Records the immutable publication manifest for the LTR-16 permission set and the complete LTR-15 tag contract, including the shared bookmark definitions dependency.

Published schemas

• link.latr.authFull
• link.latr.bookmarks.defs
• link.latr.bookmarks.listBookmarks
• link.latr.bookmarks.listTags
• link.latr.bookmarks.setTags
• link.latr.bookmarks.renameTag
• link.latr.bookmarks.deleteTag

Verification

• _lexicon.latr.link and _lexicon.bookmarks.latr.link resolve to did:plc:qy5pluw2bsuq2x6albsgkvx3 on all three authoritative Marque nameservers, 1.1.1.1, and 8.8.8.8
• Goat authentication is valid for the publishing DID/PDS
• exact seven-schema lint and DNS checks pass
• all 95 package tests pass on Bun 1.3.14
• goat lex status is green for all seven schemas
• live com.atproto.lexicon.schema CIDs exactly match the manifest
• live resolved schema structures exactly match canonical JSON

[linear-code]

LTR-15

LTR-16