chore(release): v0.16.0 — Lisa Room v2 (a living space)

[oratis]

Cuts v0.16.0. Bumps `package.json`/`package-lock.json` 0.15.0 → 0.16.0 and adds the release notes; merging this to `main` is the gate before tagging `v0.16.0` (which triggers `release.yml` + the Mac-app build).

What ships in v0.16.0

• Lisa Room v2 (feat(web): Room v2 — in-client interactions, living-space upgrade, themes & feminine figure #225) — in-client interactions (no stray browser window), a presence beat (she looks up when you arrive), autonomous ambient life, a lived-in room that remembers her day (letters pile up, pajamas at night, clickable bookshelf), re-decoratable themes (换景), and a slimmer, more feminine figure. Network-first SW shell so GUI updates land on the next refresh.
• Providers (fix(providers): gate output_config.effort by model — Haiku 4.5 rejects it #218) — gate `output_config.effort` by model so Haiku 4.5 (which hard-400s on it) stops failing on subagent/idle/reflect calls.
• Docs (docs: website ops runbook (Cloudflare + cache + fonts/OG) #226) — `docs/WEBSITE_OPS.md` runbook for meetlisa.ai.

Full notes: `docs/RELEASE_v0.16.0.md`.

Verification

• `npm test` → 920 tests, 919 pass, 0 fail, 1 skipped on this branch.
• No breaking changes; the Room is a read-only projection of real state (soul / mood / heartbeat / Reve untouched).

Post-merge (manual, per RELEASING.md)

1. Tag `v0.16.0` on the merge commit → triggers `release.yml` + `release-mac-apps.yml`.
2. `npm publish` + homebrew bump.

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