Show the build's commit in the page footer

Workers can't shell out at request time, so the commit has to be baked
in before wrangler bundles the sources. compile-views.ts grows a second
job and becomes scripts/build.ts: alongside the precompiled views it
writes src/commit.generated.ts with `git describe --tags --always
--dirty`, which yields a bare short hash until the repo is tagged and
marks builds made from an unclean working copy.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

2 files changed, 3 insertions, 2 deletions

diff --git a/src/app.ts b/src/app.ts
index 5bed45d..0218918 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -1,6 +1,7 @@
 import type { Eta } from "eta";
 import { type Context, Hono } from "hono";
 import type { StatusCode } from "hono/utils/http-status";
+import { commit } from "./commit.generated.ts";
 import {
   getGitHubBlob,
   getGitHubCommits,
@@ -47,7 +48,7 @@ export function createApp(eta: Eta) {
     // Our URLs mirror GitHub's, so the page we scraped is the same path there.
     const { pathname, search } = new URL(c.req.url);
     const githubUrl = `https://github.com${pathname}${search}`;
-    return c.html(eta.render(template, { ...data, githubUrl }));
+    return c.html(eta.render(template, { ...data, githubUrl, commit }));
   }
 
   // For fragments fetched asynchronously by client-side JS (see public/static/refs.js):
diff --git a/src/worker.ts b/src/worker.ts
index 024b01a..7bf9100 100644
--- a/src/worker.ts
+++ b/src/worker.ts
@@ -5,7 +5,7 @@ import { createApp } from "./app.ts";
 import { views } from "./views.generated.ts";
 
 // Workers disallow runtime code generation, so templates are precompiled by
-// scripts/compile-views.ts and preloaded into Eta's cache here. With
+// scripts/build.ts and preloaded into Eta's cache here. With
 // cache: true, Eta serves them from the cache and never compiles.
 const eta = new Eta({ cache: true });