Show the build, play from the keyboard, and clean up the ledger

Five things from the second playtest.

A status line at the top of every screen: the game, the pack, your current
title, and the version plus the commit it came from. `tools/stamp.js` writes the
commit into src/build-info.js before serving and before building, so a
distributed dist/theladder.html states exactly which commit produced it. An
uncommitted working tree gets a `+` suffix — "4cab9fc+" is honest in a way a
bare SHA would not be.

The whole game is now playable on Enter. Every screen marks one control and the
app focuses it after each render: the first *available* option while choosing,
the next-turn button once the result is in, "keep going" on the retrospective.
Tab and Shift+Tab reach the other options. Locked options needed no special
handling — the browser's tab order already skips disabled controls, so they stay
visible without being in the way.

"What is notable? under What changed?" — two fixes. `notable` is the
retrospective's own list of moments; a display rule can now say
`inLedger: false` and it is left out, because "Notable — changed" tells nobody
anything. Flags are the opposite and stay, but as sentences the pack supplies
rather than as booleans: "The envelope is in your locker." instead of "the
envelope: now true".

Exported logs live in logs/, gitignored, and `npm run analyze` reads the newest
one there when given no argument. A log records what a real person did turn by
turn, including whatever they typed into the feedback box — committing one once
would put it in the history for good.

Version set to 0.3.0 on the reasoning that the engine was 0.1 and the interface
0.2; say if you want a different scheme and I will renumber.

119 tests. Reasoning in docs/DECISIONS.md §25-28.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VMSFHyVPitUoosW5wyEADj

src/ui/styles.css

@@ -51,6 +51,24 @@ body {
 }
 
 .app { max-width: 1080px; margin: 0 auto; padding: 24px 20px 48px; }
+
+/* ---------- status bar ---------- */
+
+.statusbar {
+  display: flex; flex-wrap: wrap; gap: 8px 16px;
+  align-items: baseline; justify-content: space-between;
+  margin-bottom: 18px; padding-bottom: 10px;
+  border-bottom: 1px solid var(--rule);
+  font-size: 12px; letter-spacing: 0.04em;
+}
+.statusbar__what { display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline; }
+.statusbar__game { font-weight: 600; color: var(--ink); }
+.statusbar__sep { color: var(--rule-strong); }
+.statusbar__pack { color: var(--ink-soft); }
+.statusbar__title { color: var(--accent); }
+.statusbar__version {
+  font-variant-numeric: tabular-nums; color: var(--ink-faint); font-size: 11px;
+}
 .booting { color: var(--ink-faint); padding: 48px 20px; text-align: center; }
 
 /* ---------- head-up display ---------- */
@@ -178,6 +196,9 @@ body {
 .change--up .change__delta { color: var(--up); }
 .change--down .change__delta { color: var(--down); }
 .change__note { font-size: 11px; color: var(--ink-faint); font-style: italic; }
+.change--note .change__phrase { font-style: italic; }
+.change--note.change--up .change__phrase { color: var(--up); }
+.change--note.change--down .change__phrase { color: var(--ink-soft); }
 
 .button--next { margin-top: 8px; }