v0.2.0 — Architecture Compliance Refactor

What Changed

Full architecture refactoring of fusion-plugins-ecosystem based on Claude Code Plugin ecosystem deep-dive.

Phase 0: Foundation rebuild

• Frozen PluginManifest + PluginParam (immutable, hashable)
• PluginState state machine (REGISTERED→LOADED→ENABLED→DISABLED/CRASHED/TIMEOUT)
• schema.py — shared enums (PluginParamType, SandboxMode, MCPAnnotations)
• config.py validation + observer pattern

Phase 1: MCP protocol stack

• transport.py — StdioTransport, SSETransport, HTTPTransport
• jsonrpc.py — MCPHandler with JSON-RPC 2.0
• server.py — MCPServer + fusion-plugin-server CLI

Phase 2: Plugin sandbox

• sandbox.py — PluginSandbox with process isolation
• SandboxMode: INLINE / PROCESS
• ResourceLimits + SandboxHealth

Phase 3: Claude Code Plugin adapters

• skill_adapter.py, agent_adapter.py, plugin_bundle.py
• .claude-plugin/ directory generation

Phase 4: Token metering + config enhancement

• TokenMeter persistence, EcosystemConfig new fields

Phase 5: Desk Bridge cleanup

• desk_context.py removed (merged into desk_runtime.py)

Phase 6: Test rebuild

• 371 tests, all passing (was 222)
• 12 end-to-end integration flows

Cross-project

• to_dict() serialization for Swift/TS consumers
• fusion-desk moved to optional [desk] dependency
• CI workflow (pytest 3.11/3.12/3.13 + ruff lint + ruff format)
• 8 upstream/downstream GitHub issues filed

Full Changelog: v0.1.0...v0.2.0