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ai/frontend-context.md

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+# Frontend context
+
+> Read `ai/shared.md` first. This file only covers frontend-specific rules.
+
+## Project Context
+
+**Stack:** vanilla PHP templates in `views/templates/`, plain ES JavaScript in
+`public/js/`, no framework, no build step. Cypress 15 for E2E.
+**Entry point:** `public/index.php` (Slim app); page templates are rendered
+via the existing templating layer.
+
+## Code patterns
+
+- Look at existing pages (`home.php`/`home.js`, `text.php`/`text.js`,
+  `today.php`/`today.js`) for reference before writing anything
+- **Templates:** `views/templates/<page>.php`, one file per page
+- **Page JS:** `public/js/<page>.js`, one file per page, paired with the
+  matching template
+- **Testing:** Cypress E2E only, mirror existing `cypress/e2e/*.cy.js` style
+  (note: this project uses `.cy.js`, not `.cy.ts`)
+- **Imports / script tags:** keep at the top of the file
+- **Variable names:** explicit, descriptive (e.g. `text` not `t`)
+
+## Pre-commit
+
+No JS formatter or linter is configured yet; format manually for consistency
+with surrounding files. (TODO: wire up format/lint when added.)
+
+## Note on commit granularity
+
+Frontend changes are often a template plus its page-level JS counterpart -
+commit them together as a single logical unit, per the "one logical change
+per commit" rule in `shared.md`.