docs(agent-note): flip the regrouping note to implemented

Move the triplet to implemented/architecture/, rewrite Proposal into a
present-tense Decision, fold Acceptance criteria and Risks into
Consequences (recording what pins the result), retitle the migration
section to what the move actually touched, and repoint the seven
inbound FIXME/README links.

packages/bundle/README.i18n.yaml

@@ -1,12 +1,6 @@
 # Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
-<<<<<<<< HEAD:packages/bundle/README.i18n.yaml
 #   pnpm run verify-translation-pairing --write packages/bundle/README.md
-README.md: 4759170435a80e85731446cef21d24fff2abed66
-README.zh.md: 1ef610a1b7b3c591c9a900e04f2d8096b0b086b9
-========
-#   pnpm run verify-translation-pairing --write packages/interaction/tui/README.md
-README.md: c81cac891403e5294c4456ce4d4048ecd74666ce
-README.zh.md: 01055619f4df460284564f0a1816de366d809e01
->>>>>>>> a58746f4cc (refactor(packages): dissolve ui/ and rename sdk/ to scaffold/):packages/interaction/tui/README.i18n.yaml
+README.md: af06fe921a66378894a4ab0174ef403499f5f68c
+README.zh.md: ef2027e347b79e14574ba1164aa9fddd364327e9