chore(release): document V2 hook shims

[filipeforattini]

Summary

• add the missing release note for the V2 compatibility surfaces merged after v0.10.0
• cover agent, tool, command, permission, compaction, and text hook shims
• preserve the existing minor bump from the turn lifecycle changeset, producing v0.11.0

Verification

• bun script/test-redcode-release-contract.ts

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