docs(CHANGELOG.md): update unreleased section

CHANGELOG.md

@@ -4,12 +4,13 @@
 
 ## Added
 
-- `agent-tty dashboard`: a read-only, interactive **Session Dashboard** that lists your sessions and shows a live **Live View** of the selected one — watch what your agents are doing in their shells, e.g. in a tmux split. The Live View is produced by **Event Log Follow** (file-tail of `events.jsonl` → `libghostty-vt` `replayTo`/`snapshot`), so it reads the append-only **Event Log** as the source of truth and never queries the live host (ADR 0006). Master-detail UI with Tab-toggled focus (list select vs. Live View pan), 1:1 clip-top-left/letterbox plus a lossy block-glyph overview (`z`), an active/all scope toggle (`a`), and pin-on-exit (the watched session stays and freezes on its final screen with an exit badge). Requires the optional `libghostty-vt` renderer with no browser fallback, so `doctor` now reports a `dashboard` readiness capability. Interactive-only (no `--json`; fails fast on a non-interactive terminal); machine-readable session listing remains via `list --json`. See `docs/prd/session-dashboard/PRD.md` and ADR 0006 ([#109](https://github.com/coder/agent-tty/issues/109)).
+- `agent-tty dashboard`: a read-only, interactive Session Dashboard that lists your sessions and shows a live view of the selected one — watch what your agents are doing in their shells, e.g. in a tmux split. The Live View is produced by Event Log Follow (file-tail of `events.jsonl` → `libghostty-vt` `replayTo`/`snapshot`), so it reads the append-only Event Log as the source of truth and never queries the live host (ADR 0006). Master-detail UI with Tab-toggled focus (list select vs. Live View pan), 1:1 clip-top-left/letterbox plus a lossy block-glyph overview (`z`), an active/all scope toggle (`a`), and pin-on-exit (the watched session stays and freezes on its final screen with an exit badge). Requires the optional `libghostty-vt` renderer with no browser fallback, so `doctor` now reports a `dashboard` readiness capability. Interactive-only (no `--json`; fails fast on a non-interactive terminal); machine-readable session listing remains via `list --json` ([#113](https://github.com/coder/agent-tty/pull/113), closes [#109](https://github.com/coder/agent-tty/issues/109)).
 - `inspect --json` now reports `host.cliVersion`, `host.rpcSocketPath`, `rendererRuntime.profile`, `rendererRuntime.booted`, `rendererRuntime.bootInFlight` (live mode), and `eventLogBytes` (both live and offline replay). All fields are optional schema additions; existing consumers are unaffected ([#104](https://github.com/coder/agent-tty/pull/104)).
 - Canonical proof-bundle lock-down: a new `CanonicalBundleManifestSchema` requires `sha256` and `bytes` on every artifact, `npm run validate-bundle:canonical` (also wired through `mise run validate-bundles`) runs eight drift-detection rules plus catalog parity across the four canonical bundles, and the `linux-static` CI job now fails on bundle drift ([#104](https://github.com/coder/agent-tty/pull/104)).
 - Hero Demo bundle (`dogfood/agent-uses-agent-tty/`) replaced with an external Outer Camera flow: VHS records real Codex (`gpt-5.5`) and Claude (`claude-opus-4-7`) TUIs while `agent-tty` produces the inner Neovim proof artifacts. A new `mise run demo:agent-uses-agent-tty` task regenerates and promotes the demo with pinned `vhs`/`ttyd`/`ffmpeg` ([#105](https://github.com/coder/agent-tty/pull/105)).
 - Hero Demo video playback workflow: `mise run demo:agent-uses-agent-tty:upload-assets` prepares H.264 MP4 upload assets (with the curated thumbnail held as the opening frames so GitHub's natural first-frame poster shows the end-state), and `mise run demo:agent-uses-agent-tty:apply-video-urls` rewrites the inline `<video>` srcs in the root and bundle READMEs and refreshes the manifest. Full guidance lives in `dogfood/agent-uses-agent-tty/VIDEO_PLAYBACK.md` ([#106](https://github.com/coder/agent-tty/pull/106)).
 - README rebuild with one-line value prop, badge row, hero GIF, a "Why not tmux/expect/asciinema/Playwright?" comparison table, a two-backend "How it works" section (`libghostty-vt` + `ghostty-web`), and an origin story. Adds `assets/hero.{gif,tape}` and a Playwright-rendered 1200×630 social card under `assets/social-preview.*` ([#108](https://github.com/coder/agent-tty/pull/108)).
+- Session Dashboard planning docs: ADR 0006 (Event Log Follow + `libghostty-vt` backend), `docs/prd/session-dashboard/PRD.md`, and new glossary terms in `CONTEXT.md` (Session Dashboard, Live View, Event Log Follow) ([#110](https://github.com/coder/agent-tty/pull/110)).
 
 ## Changed