docs(changelog): v0.1.0 release notes

[ironystock]

Summary

Adds `CHANGELOG.md` with v0.1.0 release notes ahead of the tag. Keep a Changelog format, semver. Doc-only — no build / test / release impact.

Why now

Phase 5 of the polish sprint is the v0.1.0 tag. `goreleaser` will reference release notes from the changelog (or the tag annotation, depending on config) — having the notes in-tree before tagging means strangers landing on the GitHub Releases page get something coherent rather than auto-generated commit-list noise.

Coverage

The v0.1.0 entry summarizes everything user-visible from the sprint:

• 13-command surface (pair, add, recall, search, list, get, rm, namespaces, connections, audit, keys, import, export, config, completion)
• Output presentation (fang help, lipgloss tables, tabwriter fallback, `--json` mode)
• Leveled logging (`-v` / `--verbose` / `--quiet` via charmbracelet/log)
• Huh-styled pair prompts in TTY, bufio fallback otherwise
• API key + URL preflight with actionable error
• Cross-platform binaries + Homebrew + Scoop + styled install.sh
• rememberize-bundle Claude Code skill

Plus:

• Notes for users — flags the `-v` vs `--version` rebinding (so anyone scripting against the old behavior knows).
• Known limitations — Windows ARM64 not published, macOS not notarized, F18 (Windows per-invocation latency on the roadmap).

Verification

• File renders cleanly on GitHub's markdown preview.
• Compare-link footer URLs point at `captured-ventures/rememberize-cli` correctly.

Test plan

• CI green (only `Mod Tidy Drift`, `GoReleaser Config`, `Lint` would touch this kind of change anyway; tests don't read the file).
• After merge, you tag `v0.1.0` per the Phase 5 checklist and goreleaser fires.

Pre-tag checklist (carry-forward, for after this merges)

```

1. Confirm main is green
2. Smoke build from main: ./bin/rememberize --version → dev-
3. Tag: git tag -a v0.1.0 -m "v0.1.0 — first public release"
   git push origin v0.1.0
4. Watch the Release workflow:
   • GitHub Releases page (5 platform binaries)
   • captured-ventures/homebrew-rememberize push
   • captured-ventures/scoop-rememberize push
5. Verify each install path:
   curl -sSL https://rememberize.app/install.sh | sh
   brew tap captured-ventures/rememberize && brew install rememberize
   scoop bucket add rememberize https://github.com/captured-ventures/scoop-rememberize && scoop install rememberize
   ```

🤖 Generated with Claude Code

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