docs: redesign site with modern pages and interactive config editor

[tony19]

Summary

Replaces the 2012-era single-page site with a modern, responsive, dependency-free static site, and adds an interactive logback.xml config editor.

New pages

• index.html — landing page: hero with version/API/license badges, Gradle snippet, "Why logback-android?" feature grid, 3-step quick start, and CTAs to the docs, editor, and GitHub repo
• about.html — project background, design goals, history (1.x → 3.x, JDK-specific artifacts table), architecture diagram, license
• benefits.html — what you gain over android.util.Log, with a capability comparison table
• docs.html — installation, configuration walkthrough, appender reference, special properties (${DATA_DIR}, ${LOG_DIR}, …), Android context setup, and links to the README/Javadoc/logback manual
• editor.html — interactive config editor (see below)

Config editor

editor.html + assets/js/editor.js implement a client-side logback.xml builder:

• Add/remove/rename appenders: Logcat, File, Rolling file, SQLite, Socket, Syslog, Email (SMTP) — each with its type-specific options (patterns, paths, rolling policy with maxHistory/maxFileSize, hosts/ports, etc.)
• Add/remove loggers with per-package level and additivity control
• Root level, debug="true", config-wide <property> definitions, and optional per-appender ThresholdFilter
• Live syntax-highlighted XML preview, Copy/Download buttons, three quick-start presets, and localStorage persistence

Shared infrastructure

• assets/css/site.css — single stylesheet with light/dark themes (system preference + manual toggle), responsive layout, no external fonts/CDNs
• assets/js/site.js — theme toggle, mobile nav, code-block copy buttons
• assets/img/favicon.svg

Preserved

Existing versioned Javadocs (doc/), changelog.html, faq.html, and old assets are untouched, so no existing deep links break.

Review feedback addressed

• All wiki references removed site-wide: footers link to the README and Releases instead, the docs reference cards point to the README/issue tracker/Releases, and the editor's special-properties link points to the site's own docs section.

Screenshots

(Images are referenced from a pinned commit on this branch and were removed from the site tree in a follow-up commit, so they won't ship to the deployed site.)

Landing page (light)

Hero with release/API/license badges, Gradle dependency snippet with a hover copy button, and the feature grid below the fold.

Landing page (dark)

Same page with the dark theme, which follows the system preference and can be toggled from the nav.

Config editor — default state (light)

Fresh editor showing the minimal Logcat preset: configuration panel (root level, debug flag, properties), the Logcat appender's options, and the live syntax-highlighted logback.xml preview with Copy/Download/Reset.

Config editor — configured (dark)

A rolling-file appender added alongside Logcat with a WARN threshold filter, plus a custom com.example.myapp logger at INFO. The XML preview updates live: ThresholdFilter, TimeBasedRollingPolicy with SizeAndTimeBasedFNATP, the <logger> element, and both appender-refs on root.

About page — project overview, design goals, version history table, and architecture diagram (full page)

Benefits page — benefit cards and the capability comparison vs. android.util.Log (full page)

Docs page — installation, configuration, appender/property reference, and links to further material (full page)

Verification

Served the site locally and drove it with headless Chromium (Playwright):

• All five pages load with zero console/page errors; light and dark themes render correctly
• Editor exercised end-to-end: adding/removing appenders and loggers, renaming an appender (refs update), threshold filters, properties, root level/debug, preset loading, reset, and localStorage persistence across reload
• Generated XML validated as well-formed via DOMParser

🤖 Generated with Claude Code

https://claude.ai/code/session_01UB7UBorxG3PV8eC8iTjhGb