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AGENTS.md

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+# Agent Instructions for Marco
+
+Marco is a privacy-respecting, unhosted maps application that allows users to connect their own remote storage to sync place bookmarks across apps and devices.
+
+## Relevant Commands
+
+All commands must be executed using `pnpm`. Never use `npm`.
+
+- **Install dependencies:** `pnpm install`
+- **Start development server:** `pnpm start` (Runs Vite)
+- **Run tests:** `pnpm test` (Builds and runs via Testem)
+- **Linting:**
+  - `pnpm lint` (Runs ESLint, Stylelint, Prettier, and ember-template-lint concurrently)
+  - `pnpm lint:fix` (Automatically fixes linting and formatting errors)
+
+### NEVER RUN
+
+- `pnpm build` (only run for releases by the devs)
+- `git add`, `git commit`, or any other commands that modify git history or the staging area
+
+## Application Architecture & Frameworks
+
+### Core Stack
+
+- **Framework:** Ember.js (Octane / Polaris editions). The project heavily uses modern Ember paradigms including `.gjs` (template-tag format), `@glimmer/component`, and `@glimmer/tracking`.
+- **Build System:** Vite coupled with Embroider (`@embroider/vite`) for fast, modern asset compilation.
+
+### Mapping & Geocoding
+
+- **Maps:** Uses OpenLayers (`ol` and `ol-mapbox-style`) for rendering the map interface.
+- **Search:** Uses the Photon API (via `app/services/photon.js`) for geocoding and search functionality.
+- **Data Source:** OpenStreetMap (OSM) data is fetched and parsed to display rich place details.
+
+### Storage & Authentication
+
+- **RemoteStorage:** The app is "unhosted" meaning user data isn't locked in a central database. It uses `remotestoragejs` and `@remotestorage/module-places` to sync bookmarks to a user's chosen storage provider. (Managed in `app/services/storage.js`).
+- **OSM Auth:** Allows users to log into OpenStreetMap using OAuth 2.0 PKCE (`oauth2-pkce`) to fetch user info and potentially interact with OSM directly (Managed in `app/services/osm-auth.js`).
+
+### Directory Structure Highlights
+
+- `app/components/`: UI components using `.gjs` (Glimmer JS with embedded `<template>` tags).
+- `app/services/`: Core business logic, state management, and API integrations.
+- `app/utils/`: Helper functions for geohashing, parsing OSM tags, icon mapping, and link formatting.
+- `tests/`: Comprehensive QUnit test suite containing unit, integration, and acceptance tests.
+
+### Key Libraries
+
+- `ember-concurrency` / `ember-lifeline`: Managing async tasks and debouncing.
+- `remotestorage-widget`: The UI widget for connecting to a RemoteStorage provider.