docs: add v2.0.45 changelog entry

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -6,6 +6,8 @@ For detailed release notes, see the [full changelog on the documentation site](h
 
 ## [Unreleased]
 
+## [2.0.45] - 2026-05-08
+
 - **Admin CLI (`ncl`).** New `ncl` command for querying and modifying the central DB — agent groups, messaging groups, wirings, users, roles, members, destinations, sessions, approvals, and dropped messages. Host-side transport via Unix socket; container-side transport via session DB. Write operations from inside containers go through the approval flow. `list` supports column filtering and `--limit`. Run `ncl help` for usage.
 - **v1 → v2 migration.** Run `bash migrate-v2.sh` from the v2 checkout. Finds your v1 install (sibling directory or `NANOCLAW_V1_PATH`), merges `.env`, seeds the v2 DB from `registered_groups`, copies group folders (`CLAUDE.md` → `CLAUDE.local.md`), copies session data with conversation continuity, ports scheduled tasks, interactively selects and installs channels (clack multiselect), copies container skills, builds the agent container, and offers a service switchover to test. Hands off to Claude (`/migrate-from-v1`) for owner seeding, access policy, CLAUDE.md cleanup, and fork customization porting. See [docs/migration-dev.md](docs/migration-dev.md) and [docs/v1-to-v2-changes.md](docs/v1-to-v2-changes.md).
 - **Migration fixes.** `1b-db` now resolves Discord DMs as `discord:@me:<id>` (previously skipped any v1 chat that wasn't a guild channel — a blocker for personal-bot installs). `1c-groups` skips symlinks instead of following them (a single broken `.claude-shared.md → /app/CLAUDE.md` no longer aborts the whole copy). When `1b-db` reuses an auto-created `messaging_group` with no wired agents, its `unknown_sender_policy` is now reconciled to the migration's `public` default.