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fix: use HEROKU_RELEASE_VERSION for static asset cache-busting #49

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Merged
mroderick merged 1 commit into from
Jul 19, 2026
Merged

fix: use HEROKU_RELEASE_VERSION for static asset cache-busting #49

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18 changes: 10 additions & 8 deletions docs/heroku-setup.md
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@ heroku create codebar-auth-production --region eu

# app.json is NOT read by `heroku create`, so provision everything manually:
heroku stack:set heroku-26 -a codebar-auth-production
heroku labs:enable runtime-dyno-metadata -a codebar-auth-production
heroku addons:create heroku-postgresql:essential-0 --as DATABASE -a codebar-auth-production

# Set required GitHub OAuth credentials
Expand Down Expand Up @@ -59,14 +60,15 @@ After deploying, update your GitHub OAuth app settings:

## Environment Variables

| Variable | Source | Description |
| ---------------------- | ---------------- | ---------------------------- |
| `DATABASE_URL` | Auto-provisioned | PostgreSQL connection string |
| `GITHUB_CLIENT_ID` | Required | GitHub OAuth client ID |
| `GITHUB_CLIENT_SECRET` | Required | GitHub OAuth client secret |
| `BETTER_AUTH_SECRET` | Auto-generated | Session encryption key |
| `CODEBAR_AUTH_URL` | Auto-set | Application base URL |
| `PORT` | Heroku | Dyno port |
| Variable | Source | Description |
| ------------------------ | --------------------- | ---------------------------------- |
| `DATABASE_URL` | Auto-provisioned | PostgreSQL connection string |
| `GITHUB_CLIENT_ID` | Required | GitHub OAuth client ID |
| `GITHUB_CLIENT_SECRET` | Required | GitHub OAuth client secret |
| `BETTER_AUTH_SECRET` | Auto-generated | Session encryption key |
| `CODEBAR_AUTH_URL` | Auto-set | Application base URL |
| `PORT` | Heroku | Dyno port |
| `HEROKU_RELEASE_VERSION` | runtime-dyno-metadata | Static asset cache-busting version |

## Files

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10 changes: 3 additions & 7 deletions src/app/components/layout.js
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Original file line number Diff line number Diff line change
@@ -1,13 +1,9 @@
import { html } from "hono/html";

// Derive a version stamp for cache-busting static assets.
// HEROKU_SLUG_COMMIT is the deployed git SHA, set automatically by Heroku.
// Falls back to SOURCE_VERSION (build-time env), then 'dev' for local.
const STATIC_VERSION =
(process.env.HEROKU_SLUG_COMMIT || process.env.SOURCE_VERSION || "").slice(
0,
7,
) || "dev";
// HEROKU_RELEASE_VERSION is set by Heroku when runtime-dyno-metadata is enabled.
// Falls back to 'dev' for local development.
const STATIC_VERSION = process.env.HEROKU_RELEASE_VERSION || "dev";

// Base layout component
export const Layout = ({ title, children }) => html`
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