diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0fd95c69..134216ff 100644
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+++ b/CHANGELOG.md
@@ -4,7 +4,13 @@
 
 ### Added
 
-- `agent-tty batch <session-id>`: run an ordered sequence of input-and-`wait` steps against one session in a single invocation, supplied as a positional JSON array or `--file`. Each step is one verb (`type`, `paste`, `sendKeys`, `run`, or `wait`); every `wait` is anchored to a Wait Baseline (the Event Log sequence after the preceding input step) so it cannot match a stale screen the way a hand-written `run`/`wait`/`send-keys` loop can (ADR 0007). Fail-fast by default with a non-zero exit and a per-step `--json` envelope; `--keep-going` attempts every step. SIGINT/SIGTERM flushes a partial envelope (in-flight step `interrupted`, later steps `not-run`) ([#123](https://github.com/coder/agent-tty/issues/123)).
+- `agent-tty batch <session-id>`: run an ordered sequence of input-and-`wait` steps against one session in a single invocation, supplied as a positional JSON array or `--file`. Each step is one verb (`type`, `paste`, `sendKeys`, `run`, or `wait`); every `wait` is anchored to a Wait Baseline (the Event Log sequence after the preceding input step) so it cannot match a stale screen the way a hand-written `run`/`wait`/`send-keys` loop can (ADR 0007). Fail-fast by default with a non-zero exit and a per-step `--json` envelope; `--keep-going` attempts every step. SIGINT/SIGTERM flushes a partial envelope (in-flight step `interrupted`, later steps `not-run`). Adds a new `WAIT_TIMEOUT` error and exit code `11` for timed-out wait steps inside a batch ([#126](https://github.com/coder/agent-tty/pull/126), closes [#123](https://github.com/coder/agent-tty/issues/123)).
+- Optional `screenHash` on `snapshot` and render-`wait` results (also on matched `batch` wait steps): a lowercase 64-char SHA-256 of the canonical visible-screen text (`visibleLines[].text` joined by `\n`, no scrollback, cursor, or styles). Gives automation a stable token to tell whether the rendered screen actually changed between two observations without diffing full text, and unlike the Event Log sequence it does not advance on cursor moves or no-op repaints. Present on every result that observed a snapshot (live matches, captures, and the offline `matched:false` fallback); absent only when no screen was observed (live timeout, consecutive-failure giveup, replay-error throw). Standalone `wait` adds an `--after-seq` flag, and `type` / `paste` results now return their Event Log `seq` so callers can anchor a following wait themselves ([#127](https://github.com/coder/agent-tty/pull/127), closes [#125](https://github.com/coder/agent-tty/issues/125)).
+
+### Changed
+
+- Both renderer backends (`libghostty-vt` and `ghostty-web`) now produce one canonical visible-screen form (exactly `rows` lines, full grapheme clusters, interior blank cells as spaces, ASCII-only trailing trim) shared by the new Screen Hash, host Screen Stability comparison, and the text Render Wait matcher. This narrows a long-standing divergence so the three can never disagree about "the screen", and intentionally changes the default `ghostty-web` stability/text-wait comparand on screens with grapheme clusters, interior gaps, or non-ASCII trailing characters ([#127](https://github.com/coder/agent-tty/pull/127)).
+- README front door rewritten: agent-facing one-liner and "like Playwright, but for terminal apps" framing up top, a new **What you'd use it for** section, a **Watch sessions live** section covering the read-only `dashboard`, and explicit PNG + WebM artifact positioning vs text/asciicast tools. The command surface is folded into prose and moved after the demos; `ROADMAP.md` is retired and every cross-reference removed ([#122](https://github.com/coder/agent-tty/pull/122)). The Codex/Claude agent demo videos now sit right after **What you'd use it for**, before Quickstart, instead of being buried near the bottom ([#128](https://github.com/coder/agent-tty/pull/128)).
 
 ## [v0.3.0] - 2026-06-03