v2.0.0

[2.0.0] - 2026-06-03

Major Changes

• Version bump to 2.0.0 (breaking changes)
• Plugin ecosystem overhaul with dedicated Extension SDK (pimd.sdk)
• Cache framework abstraction with filesystem backend (pimd.caching.filesystem.FileSystemCache)
• Configuration system with schema validation and environment variable support (pimd.config.Config)
• Observability consolidation: pimd.observability absorbs pimd.profiling
• New accessibility validation engine (pimd.accessibility)
• Remote asset management with SHA256 caching and offline mode (pimd.remote_assets)
• Template inheritance system (pimd.templates.inheritance)
• Watch mode for automatic rebuilds on file changes (pimd.export.watch)
• Multi-file project builds from YAML/JSON/TOML config (pimd build)
• New CLI commands: plugin, cache info, config init, config validate, accessibility, build, watch

New Features

• Extension SDK (pimd.sdk): 9 typed plugin base classes (BasePlugin, DiagramPlugin, TemplatePlugin, CitationPlugin, RendererPlugin, ExporterPlugin, AssetPlugin, ValidationPlugin, ParserPlugin, PublishingPlugin) with EventBus, HookRegistry, and HookScope
• FileSystemCache: JSON-envelope filesystem cache with per-entry TTL, SHA-256 key hashing, and diagnostics
• Config schema validation: Config.validate() with typed ConfigSchemaEntry, Config.write_default(), env var support (PIMD_*), dotted key access, TOML serialization
• AccessibilityEngine: WCAG-based document validation checking image alt text (1.1.1), heading hierarchy (2.4.10), table headers (1.3.1), reading order, and document structure; CLI pimd accessibility check and pimd accessibility report
• RemoteAssetManager: HTTP/HTTPS asset downloads, content-addressable SHA256 caching, offline mode, domain allowlists, MIME-type detection, configurable TTL and size limits
• Template inheritance: TemplateInheritance class with chain resolution, deep merge, create_child() for deriving templates
• Watch mode: Polling-based directory watcher with optional watchdog library support, automatic rebuild on file change
• Multi-file project builds: pimd build command supporting YAML/JSON/TOML project configs with chapter/file lists
• Plugin CLI: pimd plugin install, pimd plugin enable, pimd plugin disable, pimd plugin list, pimd plugin doctor
• Cache CLI: pimd cache info with diagnostics and statistics
• Config CLI: pimd config init generates default .pimdconfig, pimd config validate checks against schema
• Accessibility CLI: pimd accessibility check (with JSON output and markdown report), pimd accessibility report
• Assets CLI: pimd assets list for inspecting document attachments and asset files
• Job system: pimd job run and pimd job list for tracked background conversions
• Profiling CLI: pimd profile run with ConversionReport summary output